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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:03:49,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:03:49,739 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:03:49,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:03:49,754 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:03:49,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:03:49,759 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:03:49,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:03:49,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:03:49,764 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:03:49,767 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:03:49,767 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:03:49,769 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:03:49,770 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:03:49,773 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:03:49,774 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:03:49,776 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:03:49,786 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:03:49,788 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:03:49,792 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:03:49,793 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:03:49,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:03:49,800 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:03:49,815 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:03:49,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:03:49,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:03:49,847 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:03:49,847 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:03:49,848 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:03:49,848 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:03:49,848 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:03:49,848 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:03:49,849 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:03:49,850 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:03:49,850 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:03:49,850 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:03:49,850 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:03:49,850 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:03:49,851 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:03:49,851 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:03:49,851 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:03:49,851 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:03:49,851 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:03:49,853 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:03:49,853 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:03:49,853 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:03:49,853 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:03:49,853 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:03:49,854 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:03:49,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:03:49,854 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:03:49,854 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:03:49,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:03:49,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:03:49,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:03:49,926 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:03:49,926 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:03:49,927 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label13_true-unreach-call.c [2018-10-24 17:03:49,990 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/23004f16e/48efad47b2cb417d9a9764bf71c56dc2/FLAG89b7fe330 [2018-10-24 17:03:50,911 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:03:50,914 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label13_true-unreach-call.c [2018-10-24 17:03:50,962 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/23004f16e/48efad47b2cb417d9a9764bf71c56dc2/FLAG89b7fe330 [2018-10-24 17:03:50,985 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/23004f16e/48efad47b2cb417d9a9764bf71c56dc2 [2018-10-24 17:03:51,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:03:51,004 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:03:51,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:03:51,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:03:51,010 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:03:51,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:03:50" (1/1) ... [2018-10-24 17:03:51,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb1a254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:51, skipping insertion in model container [2018-10-24 17:03:51,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:03:50" (1/1) ... [2018-10-24 17:03:51,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:03:51,300 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:03:53,269 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:03:53,277 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:03:54,434 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:03:54,492 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:03:54,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54 WrapperNode [2018-10-24 17:03:54,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:03:54,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:03:54,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:03:54,495 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:03:54,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:54,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:55,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:03:55,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:03:55,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:03:55,596 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:03:55,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:55,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:55,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:55,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:55,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:56,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:56,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (1/1) ... [2018-10-24 17:03:56,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:03:56,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:03:56,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:03:56,299 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:03:56,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (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 17:03:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:03:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:03:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:04:13,396 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:04:13,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:04:13 BoogieIcfgContainer [2018-10-24 17:04:13,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:04:13,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:04:13,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:04:13,402 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:04:13,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:03:50" (1/3) ... [2018-10-24 17:04:13,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23200d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:04:13, skipping insertion in model container [2018-10-24 17:04:13,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:54" (2/3) ... [2018-10-24 17:04:13,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23200d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:04:13, skipping insertion in model container [2018-10-24 17:04:13,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:04:13" (3/3) ... [2018-10-24 17:04:13,406 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label13_true-unreach-call.c [2018-10-24 17:04:13,417 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:04:13,428 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:04:13,445 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:04:13,503 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:04:13,504 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:04:13,504 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:04:13,504 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:04:13,504 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:04:13,504 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:04:13,504 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:04:13,505 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:04:13,505 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:04:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:04:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-24 17:04:13,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:13,567 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:13,570 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:13,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1502078046, now seen corresponding path program 1 times [2018-10-24 17:04:13,579 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:13,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:13,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:13,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:13,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:13,979 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 17:04:13,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:13,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:13,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:14,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:14,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:14,007 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:04:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:45,069 INFO L93 Difference]: Finished difference Result 6431 states and 12286 transitions. [2018-10-24 17:04:45,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:45,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-24 17:04:45,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:45,129 INFO L225 Difference]: With dead ends: 6431 [2018-10-24 17:04:45,130 INFO L226 Difference]: Without dead ends: 4675 [2018-10-24 17:04:45,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-10-24 17:04:45,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4581. [2018-10-24 17:04:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4581 states. [2018-10-24 17:04:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 7890 transitions. [2018-10-24 17:04:45,360 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 7890 transitions. Word has length 36 [2018-10-24 17:04:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:45,361 INFO L481 AbstractCegarLoop]: Abstraction has 4581 states and 7890 transitions. [2018-10-24 17:04:45,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:45,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 7890 transitions. [2018-10-24 17:04:45,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 17:04:45,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:45,371 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:45,372 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:45,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:45,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1744428717, now seen corresponding path program 1 times [2018-10-24 17:04:45,373 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:45,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:45,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:45,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:45,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:45,808 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:04:46,160 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-10-24 17:04:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:46,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:46,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:04:46,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:04:46,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:04:46,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:04:46,348 INFO L87 Difference]: Start difference. First operand 4581 states and 7890 transitions. Second operand 6 states. [2018-10-24 17:05:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:17,443 INFO L93 Difference]: Finished difference Result 17384 states and 28714 transitions. [2018-10-24 17:05:17,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:05:17,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-24 17:05:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:17,512 INFO L225 Difference]: With dead ends: 17384 [2018-10-24 17:05:17,512 INFO L226 Difference]: Without dead ends: 12805 [2018-10-24 17:05:17,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:05:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2018-10-24 17:05:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 11430. [2018-10-24 17:05:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-10-24 17:05:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 17329 transitions. [2018-10-24 17:05:17,797 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 17329 transitions. Word has length 108 [2018-10-24 17:05:17,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:17,798 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 17329 transitions. [2018-10-24 17:05:17,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:05:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 17329 transitions. [2018-10-24 17:05:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-24 17:05:17,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:17,816 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:17,816 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:17,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:17,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1579920259, now seen corresponding path program 1 times [2018-10-24 17:05:17,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:17,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:17,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:17,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:17,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:18,481 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:05:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-24 17:05:18,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:18,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:05:18,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:05:18,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:05:18,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:05:18,840 INFO L87 Difference]: Start difference. First operand 11430 states and 17329 transitions. Second operand 7 states. [2018-10-24 17:05:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:55,279 INFO L93 Difference]: Finished difference Result 35166 states and 54823 transitions. [2018-10-24 17:05:55,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:05:55,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2018-10-24 17:05:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:55,383 INFO L225 Difference]: With dead ends: 35166 [2018-10-24 17:05:55,383 INFO L226 Difference]: Without dead ends: 23738 [2018-10-24 17:05:55,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:05:55,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23738 states. [2018-10-24 17:05:55,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23738 to 19636. [2018-10-24 17:05:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19636 states. [2018-10-24 17:05:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19636 states to 19636 states and 26064 transitions. [2018-10-24 17:05:55,792 INFO L78 Accepts]: Start accepts. Automaton has 19636 states and 26064 transitions. Word has length 322 [2018-10-24 17:05:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:55,793 INFO L481 AbstractCegarLoop]: Abstraction has 19636 states and 26064 transitions. [2018-10-24 17:05:55,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:05:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 19636 states and 26064 transitions. [2018-10-24 17:05:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-24 17:05:55,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:55,801 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:55,801 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:55,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:55,802 INFO L82 PathProgramCache]: Analyzing trace with hash 688101527, now seen corresponding path program 1 times [2018-10-24 17:05:55,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:55,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:55,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:55,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:55,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 17:05:56,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:05:56,427 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 17:05:56,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:56,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:05:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:05:56,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:05:56,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:05:56,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:56,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:56,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:56,781 INFO L87 Difference]: Start difference. First operand 19636 states and 26064 transitions. Second operand 4 states. [2018-10-24 17:06:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:23,858 INFO L93 Difference]: Finished difference Result 68184 states and 93591 transitions. [2018-10-24 17:06:23,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:23,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 350 [2018-10-24 17:06:23,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:23,966 INFO L225 Difference]: With dead ends: 68184 [2018-10-24 17:06:23,966 INFO L226 Difference]: Without dead ends: 49916 [2018-10-24 17:06:23,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 350 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 17:06:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49916 states. [2018-10-24 17:06:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49916 to 31922. [2018-10-24 17:06:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31922 states. [2018-10-24 17:06:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31922 states to 31922 states and 43418 transitions. [2018-10-24 17:06:24,704 INFO L78 Accepts]: Start accepts. Automaton has 31922 states and 43418 transitions. Word has length 350 [2018-10-24 17:06:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:24,705 INFO L481 AbstractCegarLoop]: Abstraction has 31922 states and 43418 transitions. [2018-10-24 17:06:24,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 31922 states and 43418 transitions. [2018-10-24 17:06:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-24 17:06:24,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:24,715 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:24,716 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:24,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:24,716 INFO L82 PathProgramCache]: Analyzing trace with hash -683855534, now seen corresponding path program 1 times [2018-10-24 17:06:24,716 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:24,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:24,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:24,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:24,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:25,147 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 17:06:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 67 proven. 65 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 17:06:25,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:06:25,302 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 17:06:25,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:25,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:06:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:06:25,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:06:25,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:06:25,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:06:25,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:06:25,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:06:25,648 INFO L87 Difference]: Start difference. First operand 31922 states and 43418 transitions. Second operand 5 states. [2018-10-24 17:06:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:57,763 INFO L93 Difference]: Finished difference Result 133872 states and 192096 transitions. [2018-10-24 17:06:57,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:06:57,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 395 [2018-10-24 17:06:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:57,961 INFO L225 Difference]: With dead ends: 133872 [2018-10-24 17:06:57,961 INFO L226 Difference]: Without dead ends: 97852 [2018-10-24 17:06:58,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:06:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97852 states. [2018-10-24 17:06:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97852 to 95031. [2018-10-24 17:06:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95031 states. [2018-10-24 17:06:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95031 states to 95031 states and 117721 transitions. [2018-10-24 17:06:59,191 INFO L78 Accepts]: Start accepts. Automaton has 95031 states and 117721 transitions. Word has length 395 [2018-10-24 17:06:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:59,192 INFO L481 AbstractCegarLoop]: Abstraction has 95031 states and 117721 transitions. [2018-10-24 17:06:59,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:06:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 95031 states and 117721 transitions. [2018-10-24 17:06:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-10-24 17:06:59,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:59,202 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:06:59,202 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:59,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:59,203 INFO L82 PathProgramCache]: Analyzing trace with hash 221221852, now seen corresponding path program 1 times [2018-10-24 17:06:59,203 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:59,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:59,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:59,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:59,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-24 17:07:00,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:00,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:07:00,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:00,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:00,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:00,353 INFO L87 Difference]: Start difference. First operand 95031 states and 117721 transitions. Second operand 4 states. [2018-10-24 17:07:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:20,801 INFO L93 Difference]: Finished difference Result 259736 states and 324302 transitions. [2018-10-24 17:07:20,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:20,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2018-10-24 17:07:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:21,009 INFO L225 Difference]: With dead ends: 259736 [2018-10-24 17:07:21,009 INFO L226 Difference]: Without dead ends: 157846 [2018-10-24 17:07:21,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 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 17:07:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157846 states. [2018-10-24 17:07:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157846 to 157834. [2018-10-24 17:07:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157834 states. [2018-10-24 17:07:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157834 states to 157834 states and 187231 transitions. [2018-10-24 17:07:23,418 INFO L78 Accepts]: Start accepts. Automaton has 157834 states and 187231 transitions. Word has length 492 [2018-10-24 17:07:23,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:23,418 INFO L481 AbstractCegarLoop]: Abstraction has 157834 states and 187231 transitions. [2018-10-24 17:07:23,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:23,419 INFO L276 IsEmpty]: Start isEmpty. Operand 157834 states and 187231 transitions. [2018-10-24 17:07:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-10-24 17:07:23,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:23,460 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:07:23,461 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:23,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash -292757731, now seen corresponding path program 1 times [2018-10-24 17:07:23,461 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:23,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:23,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:23,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:23,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 742 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-10-24 17:07:24,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:24,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:07:24,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:24,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:24,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:24,123 INFO L87 Difference]: Start difference. First operand 157834 states and 187231 transitions. Second operand 4 states. [2018-10-24 17:07:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:42,807 INFO L93 Difference]: Finished difference Result 337521 states and 401412 transitions. [2018-10-24 17:07:42,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:42,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 728 [2018-10-24 17:07:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:43,040 INFO L225 Difference]: With dead ends: 337521 [2018-10-24 17:07:43,040 INFO L226 Difference]: Without dead ends: 176950 [2018-10-24 17:07:43,129 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 17:07:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176950 states. [2018-10-24 17:07:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176950 to 175575. [2018-10-24 17:07:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175575 states. [2018-10-24 17:07:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175575 states to 175575 states and 198119 transitions. [2018-10-24 17:07:45,506 INFO L78 Accepts]: Start accepts. Automaton has 175575 states and 198119 transitions. Word has length 728 [2018-10-24 17:07:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:45,507 INFO L481 AbstractCegarLoop]: Abstraction has 175575 states and 198119 transitions. [2018-10-24 17:07:45,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 175575 states and 198119 transitions. [2018-10-24 17:07:45,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2018-10-24 17:07:45,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:45,520 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:45,520 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:45,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:45,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1215015212, now seen corresponding path program 1 times [2018-10-24 17:07:45,521 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:45,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:45,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:45,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:45,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:46,087 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 17:07:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 291 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 17:07:48,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:07:48,049 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 17:07:48,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:48,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-24 17:07:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 17:07:48,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:07:48,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:07:48,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:07:48,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:07:48,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:07:48,790 INFO L87 Difference]: Start difference. First operand 175575 states and 198119 transitions. Second operand 5 states. [2018-10-24 17:07:48,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 17:07:48,791 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:07:48,796 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:07:48,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:07:48 BoogieIcfgContainer [2018-10-24 17:07:48,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:07:48,797 INFO L168 Benchmark]: Toolchain (without parser) took 237794.58 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.3 GB in the beginning and 1.1 GB in the end (delta: 276.8 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:07:48,798 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:07:48,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3488.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 954.8 MB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:48,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 1100.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.4 MB). Free memory was 954.8 MB in the beginning and 2.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:48,801 INFO L168 Benchmark]: Boogie Preprocessor took 703.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 106.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:48,801 INFO L168 Benchmark]: RCFGBuilder took 17098.52 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 279.4 MB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 486.1 MB). Peak memory consumption was 765.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:48,802 INFO L168 Benchmark]: TraceAbstraction took 215397.78 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 392.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 17:07:48,808 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3488.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 954.8 MB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1100.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.4 MB). Free memory was 954.8 MB in the beginning and 2.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 703.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 106.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17098.52 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 279.4 MB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 486.1 MB). Peak memory consumption was 765.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215397.78 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 392.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (175575states) and FLOYD_HOARE automaton (currently 2 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 215.3s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 198.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7735 SDtfs, 40804 SDslu, 3711 SDs, 0 SdLazy, 84908 SolverSat, 24112 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 169.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1683 GetRequests, 1640 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175575occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 27773 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 4950 NumberOfCodeBlocks, 4950 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4939 ConstructedInterpolants, 0 QuantifiedInterpolants, 9493685 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1908 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2545/2618 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown