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/Problem17_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:49:37,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:49:37,255 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:49:37,277 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:49:37,278 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:49:37,280 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:49:37,283 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:49:37,284 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:49:37,287 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:49:37,289 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:49:37,290 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:49:37,290 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:49:37,292 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:49:37,294 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:49:37,296 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:49:37,297 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:49:37,299 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:49:37,300 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:49:37,307 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:49:37,310 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:49:37,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:49:37,312 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:49:37,315 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:49:37,330 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 [2018-10-24 23:49:37,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:49:37,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:49:37,362 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:49:37,362 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:49:37,362 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:49:37,362 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:49:37,363 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:49:37,366 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:49:37,366 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:49:37,366 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:49:37,367 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:49:37,367 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:49:37,367 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:49:37,367 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:49:37,368 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:49:37,368 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:49:37,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:49:37,369 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:49:37,371 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:49:37,371 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:49:37,371 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:49:37,371 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:49:37,371 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:49:37,372 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:49:37,372 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:49:37,372 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:49:37,372 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:49:37,373 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:49:37,373 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:49:37,373 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:49:37,373 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:49:37,373 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:49:37,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:49:37,374 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:49:37,374 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:49:37,374 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:49:37,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:49:37,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:49:37,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:49:37,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:49:37,461 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:49:37,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55_false-unreach-call.c [2018-10-24 23:49:37,521 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/506b64472/635c8950d8424a69a0890bdffebce606/FLAGb54d82586 [2018-10-24 23:49:38,194 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:49:38,195 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label55_false-unreach-call.c [2018-10-24 23:49:38,216 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/506b64472/635c8950d8424a69a0890bdffebce606/FLAGb54d82586 [2018-10-24 23:49:38,234 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/506b64472/635c8950d8424a69a0890bdffebce606 [2018-10-24 23:49:38,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:49:38,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:49:38,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:49:38,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:49:38,253 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:49:38,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:49:38" (1/1) ... [2018-10-24 23:49:38,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce3d116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:38, skipping insertion in model container [2018-10-24 23:49:38,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:49:38" (1/1) ... [2018-10-24 23:49:38,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:49:38,407 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:49:39,570 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:49:39,575 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:49:39,994 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:49:40,020 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:49:40,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40 WrapperNode [2018-10-24 23:49:40,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:49:40,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:49:40,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:49:40,024 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:49:40,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:49:40,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:49:40,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:49:40,511 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:49:40,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... [2018-10-24 23:49:40,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:49:40,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:49:40,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:49:40,830 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:49:40,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:49:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:49:40,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:49:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:49:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:49:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:49:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:49:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:49:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:49:40,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:49:40,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:49:53,338 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:49:53,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:49:53 BoogieIcfgContainer [2018-10-24 23:49:53,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:49:53,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:49:53,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:49:53,347 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:49:53,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:49:38" (1/3) ... [2018-10-24 23:49:53,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171fc45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:49:53, skipping insertion in model container [2018-10-24 23:49:53,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:40" (2/3) ... [2018-10-24 23:49:53,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171fc45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:49:53, skipping insertion in model container [2018-10-24 23:49:53,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:49:53" (3/3) ... [2018-10-24 23:49:53,353 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label55_false-unreach-call.c [2018-10-24 23:49:53,364 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:49:53,379 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:49:53,397 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:49:53,457 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:49:53,457 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:49:53,457 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:49:53,458 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:49:53,458 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:49:53,458 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:49:53,458 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:49:53,458 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:49:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 23:49:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 23:49:53,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:49:53,523 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:49:53,525 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:49:53,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:49:53,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2057459564, now seen corresponding path program 1 times [2018-10-24 23:49:53,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:49:53,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:49:53,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:49:53,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:49:53,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:49:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:49:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:49:54,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:49:54,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:49:54,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:49:54,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:49:54,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:49:54,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:49:54,065 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 23:50:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:50:02,811 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-24 23:50:02,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:50:02,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-24 23:50:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:50:02,862 INFO L225 Difference]: With dead ends: 2164 [2018-10-24 23:50:02,862 INFO L226 Difference]: Without dead ends: 1554 [2018-10-24 23:50:02,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:50:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-24 23:50:02,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-24 23:50:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-24 23:50:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-24 23:50:03,003 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 18 [2018-10-24 23:50:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:50:03,003 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-24 23:50:03,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:50:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-24 23:50:03,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-24 23:50:03,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:50:03,011 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:50:03,011 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:50:03,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:50:03,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1959202398, now seen corresponding path program 1 times [2018-10-24 23:50:03,014 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:50:03,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:50:03,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:50:03,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:50:03,016 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:50:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:50:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:50:03,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:50:03,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:50:03,360 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:50:03,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:50:03,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:50:03,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:50:03,362 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-24 23:50:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:50:14,125 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-24 23:50:14,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:50:14,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-10-24 23:50:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:50:14,142 INFO L225 Difference]: With dead ends: 3031 [2018-10-24 23:50:14,142 INFO L226 Difference]: Without dead ends: 1985 [2018-10-24 23:50:14,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:50:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-24 23:50:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-24 23:50:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 23:50:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-24 23:50:14,234 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 90 [2018-10-24 23:50:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:50:14,235 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-24 23:50:14,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:50:14,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-24 23:50:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 23:50:14,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:50:14,239 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:50:14,239 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:50:14,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:50:14,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1042899370, now seen corresponding path program 1 times [2018-10-24 23:50:14,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:50:14,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:50:14,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:50:14,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:50:14,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:50:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:50:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:50:14,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:50:14,575 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:50:14,576 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 94 with the following transitions: [2018-10-24 23:50:14,579 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:50:14,643 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:50:14,643 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:50:16,295 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:50:16,297 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:50:16,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:50:16,336 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:50:16,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:50:16,336 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 [2018-10-24 23:50:16,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:50:16,352 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:50:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:50:16,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:50:23,006 WARN L179 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-24 23:50:27,496 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-10-24 23:50:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:50:27,576 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:50:29,068 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-10-24 23:50:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:50:29,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:50:29,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 23:50:29,393 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:50:29,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:50:29,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:50:29,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2018-10-24 23:50:29,395 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-24 23:50:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:50:58,128 INFO L93 Difference]: Finished difference Result 7521 states and 12907 transitions. [2018-10-24 23:50:58,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:50:58,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-24 23:50:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:50:58,171 INFO L225 Difference]: With dead ends: 7521 [2018-10-24 23:50:58,171 INFO L226 Difference]: Without dead ends: 5568 [2018-10-24 23:50:58,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2018-10-24 23:50:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2018-10-24 23:50:58,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5558. [2018-10-24 23:50:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5558 states. [2018-10-24 23:50:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 9358 transitions. [2018-10-24 23:50:58,396 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 9358 transitions. Word has length 93 [2018-10-24 23:50:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:50:58,396 INFO L481 AbstractCegarLoop]: Abstraction has 5558 states and 9358 transitions. [2018-10-24 23:50:58,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:50:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 9358 transitions. [2018-10-24 23:50:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 23:50:58,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:50:58,400 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:50:58,401 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:50:58,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:50:58,401 INFO L82 PathProgramCache]: Analyzing trace with hash -514206206, now seen corresponding path program 1 times [2018-10-24 23:50:58,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:50:58,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:50:58,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:50:58,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:50:58,403 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:50:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:50:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:50:58,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:50:58,714 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:50:58,715 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 107 with the following transitions: [2018-10-24 23:50:58,715 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:50:58,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:50:58,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:50:59,042 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:50:59,043 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:50:59,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:50:59,080 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:50:59,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:50:59,081 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 [2018-10-24 23:50:59,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:50:59,099 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:50:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:50:59,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:50:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:50:59,309 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:50:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:50:59,511 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:50:59,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 23:50:59,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:50:59,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:50:59,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:50:59,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:50:59,513 INFO L87 Difference]: Start difference. First operand 5558 states and 9358 transitions. Second operand 3 states. [2018-10-24 23:51:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:51:05,018 INFO L93 Difference]: Finished difference Result 13732 states and 22994 transitions. [2018-10-24 23:51:05,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:51:05,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2018-10-24 23:51:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:51:05,071 INFO L225 Difference]: With dead ends: 13732 [2018-10-24 23:51:05,071 INFO L226 Difference]: Without dead ends: 8180 [2018-10-24 23:51:05,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:51:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2018-10-24 23:51:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 8179. [2018-10-24 23:51:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8179 states. [2018-10-24 23:51:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 12787 transitions. [2018-10-24 23:51:05,338 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 12787 transitions. Word has length 106 [2018-10-24 23:51:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:51:05,339 INFO L481 AbstractCegarLoop]: Abstraction has 8179 states and 12787 transitions. [2018-10-24 23:51:05,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:51:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 12787 transitions. [2018-10-24 23:51:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 23:51:05,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:51:05,348 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:51:05,350 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:51:05,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash -477862812, now seen corresponding path program 1 times [2018-10-24 23:51:05,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:51:05,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:05,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:05,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:05,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:51:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:05,683 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:51:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 23:51:05,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:51:05,899 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:51:05,899 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-10-24 23:51:05,900 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:51:05,904 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:51:05,905 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:51:06,870 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:51:06,870 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:51:06,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:06,904 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:51:06,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:51:06,905 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 [2018-10-24 23:51:07,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:07,088 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:51:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:07,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:51:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:51:07,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:51:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:51:07,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:51:07,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 23:51:07,981 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:51:07,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:51:07,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:51:07,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:51:07,983 INFO L87 Difference]: Start difference. First operand 8179 states and 12787 transitions. Second operand 9 states. [2018-10-24 23:51:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:51:16,862 INFO L93 Difference]: Finished difference Result 16011 states and 25197 transitions. [2018-10-24 23:51:16,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:51:16,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 191 [2018-10-24 23:51:16,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:51:16,895 INFO L225 Difference]: With dead ends: 16011 [2018-10-24 23:51:16,896 INFO L226 Difference]: Without dead ends: 6868 [2018-10-24 23:51:16,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 380 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-24 23:51:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2018-10-24 23:51:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6835. [2018-10-24 23:51:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6835 states. [2018-10-24 23:51:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6835 states to 6835 states and 8210 transitions. [2018-10-24 23:51:17,089 INFO L78 Accepts]: Start accepts. Automaton has 6835 states and 8210 transitions. Word has length 191 [2018-10-24 23:51:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:51:17,089 INFO L481 AbstractCegarLoop]: Abstraction has 6835 states and 8210 transitions. [2018-10-24 23:51:17,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:51:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6835 states and 8210 transitions. [2018-10-24 23:51:17,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-24 23:51:17,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:51:17,098 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:51:17,098 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:51:17,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:17,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1709165469, now seen corresponding path program 1 times [2018-10-24 23:51:17,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:51:17,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:17,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:17,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:17,100 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:51:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 23:51:17,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:51:17,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:51:17,511 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:51:17,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:51:17,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:51:17,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:51:17,512 INFO L87 Difference]: Start difference. First operand 6835 states and 8210 transitions. Second operand 4 states. [2018-10-24 23:51:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:51:24,402 INFO L93 Difference]: Finished difference Result 24694 states and 30318 transitions. [2018-10-24 23:51:24,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:51:24,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 272 [2018-10-24 23:51:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:51:24,466 INFO L225 Difference]: With dead ends: 24694 [2018-10-24 23:51:24,466 INFO L226 Difference]: Without dead ends: 14318 [2018-10-24 23:51:24,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:51:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14318 states. [2018-10-24 23:51:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14318 to 14313. [2018-10-24 23:51:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14313 states. [2018-10-24 23:51:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 16729 transitions. [2018-10-24 23:51:24,799 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 16729 transitions. Word has length 272 [2018-10-24 23:51:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:51:24,800 INFO L481 AbstractCegarLoop]: Abstraction has 14313 states and 16729 transitions. [2018-10-24 23:51:24,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:51:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 16729 transitions. [2018-10-24 23:51:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-24 23:51:24,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:51:24,815 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:51:24,815 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:51:24,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1227854719, now seen corresponding path program 1 times [2018-10-24 23:51:24,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:51:24,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:24,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:24,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:24,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:51:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:51:25,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:51:25,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:51:25,837 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-24 23:51:25,838 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:51:25,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:51:25,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:51:26,950 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:51:26,950 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:51:26,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:26,987 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:51:26,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:51:26,987 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:51:27,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:27,003 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:51:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:27,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:51:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:51:27,658 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:51:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:51:28,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:51:28,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-24 23:51:28,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:51:28,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:51:28,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:51:28,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:51:28,072 INFO L87 Difference]: Start difference. First operand 14313 states and 16729 transitions. Second operand 6 states. [2018-10-24 23:51:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:51:35,263 INFO L93 Difference]: Finished difference Result 32576 states and 38063 transitions. [2018-10-24 23:51:35,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:51:35,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 366 [2018-10-24 23:51:35,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:51:35,309 INFO L225 Difference]: With dead ends: 32576 [2018-10-24 23:51:35,309 INFO L226 Difference]: Without dead ends: 16952 [2018-10-24 23:51:35,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 731 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:51:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16952 states. [2018-10-24 23:51:35,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16952 to 16076. [2018-10-24 23:51:35,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16076 states. [2018-10-24 23:51:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16076 states to 16076 states and 18804 transitions. [2018-10-24 23:51:35,699 INFO L78 Accepts]: Start accepts. Automaton has 16076 states and 18804 transitions. Word has length 366 [2018-10-24 23:51:35,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:51:35,700 INFO L481 AbstractCegarLoop]: Abstraction has 16076 states and 18804 transitions. [2018-10-24 23:51:35,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:51:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 16076 states and 18804 transitions. [2018-10-24 23:51:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-24 23:51:35,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:51:35,723 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:51:35,723 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:51:35,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1648283374, now seen corresponding path program 1 times [2018-10-24 23:51:35,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:51:35,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:35,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:35,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:35,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:51:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 43 proven. 159 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-24 23:51:36,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:51:36,865 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:51:36,865 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 475 with the following transitions: [2018-10-24 23:51:36,866 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2275], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:51:36,872 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:51:36,873 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:51:38,160 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:51:38,161 INFO L272 AbstractInterpreter]: Visited 299 different actions 904 times. Merged at 8 different actions 30 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-24 23:51:38,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:38,201 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:51:38,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:51:38,201 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:51:38,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:38,213 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:51:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:38,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:51:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-24 23:51:38,828 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:51:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 43 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:51:40,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:51:40,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-10-24 23:51:40,458 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:51:40,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:51:40,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:51:40,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-10-24 23:51:40,460 INFO L87 Difference]: Start difference. First operand 16076 states and 18804 transitions. Second operand 9 states. [2018-10-24 23:51:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:51:53,315 INFO L93 Difference]: Finished difference Result 49145 states and 59264 transitions. [2018-10-24 23:51:53,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 23:51:53,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 474 [2018-10-24 23:51:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:51:53,396 INFO L225 Difference]: With dead ends: 49145 [2018-10-24 23:51:53,396 INFO L226 Difference]: Without dead ends: 32172 [2018-10-24 23:51:53,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 952 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-10-24 23:51:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32172 states. [2018-10-24 23:51:53,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32172 to 26778. [2018-10-24 23:51:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26778 states. [2018-10-24 23:51:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26778 states to 26778 states and 31270 transitions. [2018-10-24 23:51:53,921 INFO L78 Accepts]: Start accepts. Automaton has 26778 states and 31270 transitions. Word has length 474 [2018-10-24 23:51:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:51:53,921 INFO L481 AbstractCegarLoop]: Abstraction has 26778 states and 31270 transitions. [2018-10-24 23:51:53,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:51:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 26778 states and 31270 transitions. [2018-10-24 23:51:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-10-24 23:51:53,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:51:53,955 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:51:53,955 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:51:53,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:53,955 INFO L82 PathProgramCache]: Analyzing trace with hash -595798553, now seen corresponding path program 1 times [2018-10-24 23:51:53,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:51:53,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:53,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:53,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:51:53,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:51:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 23:51:54,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:51:54,861 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:51:54,861 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 586 with the following transitions: [2018-10-24 23:51:54,861 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2275], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:51:54,868 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:51:54,868 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:51:56,371 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:51:56,371 INFO L272 AbstractInterpreter]: Visited 300 different actions 914 times. Merged at 9 different actions 37 times. Widened at 1 different actions 3 times. Found 7 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-24 23:51:56,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:51:56,380 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:51:56,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:51:56,380 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:51:56,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:51:56,389 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:51:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:51:56,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:52:03,848 WARN L179 SmtUtils]: Spent 6.92 s on a formula simplification. DAG size of input: 920 DAG size of output: 23 [2018-10-24 23:52:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 23:52:04,389 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:52:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 23:52:05,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:52:05,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2018-10-24 23:52:05,200 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:52:05,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:52:05,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:52:05,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:52:05,202 INFO L87 Difference]: Start difference. First operand 26778 states and 31270 transitions. Second operand 6 states. [2018-10-24 23:53:07,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:53:07,604 INFO L93 Difference]: Finished difference Result 69299 states and 84691 transitions. [2018-10-24 23:53:07,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 23:53:07,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 585 [2018-10-24 23:53:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:53:07,724 INFO L225 Difference]: With dead ends: 69299 [2018-10-24 23:53:07,724 INFO L226 Difference]: Without dead ends: 42527 [2018-10-24 23:53:07,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1171 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-10-24 23:53:07,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42527 states. [2018-10-24 23:53:08,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42527 to 39437. [2018-10-24 23:53:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39437 states. [2018-10-24 23:53:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39437 states to 39437 states and 46031 transitions. [2018-10-24 23:53:08,793 INFO L78 Accepts]: Start accepts. Automaton has 39437 states and 46031 transitions. Word has length 585 [2018-10-24 23:53:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:53:08,794 INFO L481 AbstractCegarLoop]: Abstraction has 39437 states and 46031 transitions. [2018-10-24 23:53:08,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:53:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 39437 states and 46031 transitions. [2018-10-24 23:53:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2018-10-24 23:53:08,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:53:08,833 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:53:08,833 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:53:08,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:53:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash -257296657, now seen corresponding path program 1 times [2018-10-24 23:53:08,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:53:08,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:53:08,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:53:08,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:53:08,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:53:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:53:10,074 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 23:53:10,767 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-24 23:53:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 61 proven. 427 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 23:53:11,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:53:11,292 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:53:11,293 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 590 with the following transitions: [2018-10-24 23:53:11,293 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2275], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:53:11,299 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:53:11,299 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:53:12,159 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:53:12,160 INFO L272 AbstractInterpreter]: Visited 300 different actions 603 times. Merged at 9 different actions 15 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-24 23:53:12,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:53:12,165 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:53:12,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:53:12,165 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:53:12,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:53:12,174 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:53:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:53:12,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:53:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 472 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-24 23:53:12,724 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:53:12,930 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2018-10-24 23:53:13,526 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-24 23:53:13,654 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-24 23:53:15,915 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-10-24 23:53:15,966 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:53:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 55 proven. 433 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 23:53:17,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:53:17,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2018-10-24 23:53:17,382 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:53:17,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 23:53:17,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 23:53:17,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-10-24 23:53:17,384 INFO L87 Difference]: Start difference. First operand 39437 states and 46031 transitions. Second operand 15 states. Received shutdown request... [2018-10-24 23:53:37,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-24 23:53:37,520 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:53:37,527 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:53:37,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:53:37 BoogieIcfgContainer [2018-10-24 23:53:37,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:53:37,528 INFO L168 Benchmark]: Toolchain (without parser) took 239282.15 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -213.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 23:53:37,529 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:53:37,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1773.38 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:53:37,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 486.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -914.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:53:37,532 INFO L168 Benchmark]: Boogie Preprocessor took 319.11 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:53:37,533 INFO L168 Benchmark]: RCFGBuilder took 12509.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 457.0 MB). Peak memory consumption was 457.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:53:37,533 INFO L168 Benchmark]: TraceAbstraction took 224187.11 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 77.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 23:53:37,538 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1773.38 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 486.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -914.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 319.11 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12509.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 457.0 MB). Peak memory consumption was 457.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224187.11 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 77.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 41). Cancelled while BasicCegarLoop was constructing difference of abstraction (39437states) and FLOYD_HOARE automaton (currently 37 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (36232 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 224.0s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 172.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2926 SDtfs, 23831 SDslu, 2654 SDs, 0 SdLazy, 38976 SolverSat, 7759 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 158.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4987 GetRequests, 4831 SyntacticMatches, 18 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 28.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39437occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.0s AbstIntTime, 7 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 9937 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 36.5s InterpolantComputationTime, 5188 NumberOfCodeBlocks, 5188 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7568 ConstructedInterpolants, 290 QuantifiedInterpolants, 15521333 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3847 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 24 InterpolantComputations, 7 PerfectInterpolantSequences, 3537/4846 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown