java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 15:33:09,329 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 15:33:09,333 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 15:33:09,345 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 15:33:09,345 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 15:33:09,346 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 15:33:09,347 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 15:33:09,351 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 15:33:09,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 15:33:09,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 15:33:09,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 15:33:09,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 15:33:09,365 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 15:33:09,367 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 15:33:09,368 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 15:33:09,369 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 15:33:09,370 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 15:33:09,374 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 15:33:09,376 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 15:33:09,380 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 15:33:09,381 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 15:33:09,382 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 15:33:09,386 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 15:33:09,404 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 15:33:09,425 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 15:33:09,425 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 15:33:09,426 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 15:33:09,426 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 15:33:09,426 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 15:33:09,427 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 15:33:09,427 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 15:33:09,427 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 15:33:09,427 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 15:33:09,427 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 15:33:09,428 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 15:33:09,430 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 15:33:09,430 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 15:33:09,430 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 15:33:09,430 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 15:33:09,431 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 15:33:09,431 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 15:33:09,431 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 15:33:09,431 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 15:33:09,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 15:33:09,432 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 15:33:09,432 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 15:33:09,432 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 15:33:09,432 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 15:33:09,432 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 15:33:09,433 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 15:33:09,433 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 15:33:09,433 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 15:33:09,433 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 15:33:09,491 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 15:33:09,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 15:33:09,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 15:33:09,516 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 15:33:09,516 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 15:33:09,517 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-07-22 15:33:09,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb7b0db2/b97b550db24445449498c4fdf39c2226/FLAG90c63a2d4 [2018-07-22 15:33:10,597 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 15:33:10,598 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-07-22 15:33:10,651 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb7b0db2/b97b550db24445449498c4fdf39c2226/FLAG90c63a2d4 [2018-07-22 15:33:10,674 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb7b0db2/b97b550db24445449498c4fdf39c2226 [2018-07-22 15:33:10,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 15:33:10,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 15:33:10,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 15:33:10,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 15:33:10,704 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 15:33:10,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:33:10" (1/1) ... [2018-07-22 15:33:10,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ab3998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:10, skipping insertion in model container [2018-07-22 15:33:10,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:33:10" (1/1) ... [2018-07-22 15:33:11,239 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 15:33:13,254 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 15:33:13,272 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 15:33:14,451 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 15:33:15,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15 WrapperNode [2018-07-22 15:33:15,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 15:33:15,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 15:33:15,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 15:33:15,234 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 15:33:15,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:15,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:17,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 15:33:17,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 15:33:17,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 15:33:17,670 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 15:33:17,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:17,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:17,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:17,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:18,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:18,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:18,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... [2018-07-22 15:33:18,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 15:33:18,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 15:33:18,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 15:33:18,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 15:33:18,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 15:33:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 15:33:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 15:33:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 15:33:38,626 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 15:33:38,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:33:38 BoogieIcfgContainer [2018-07-22 15:33:38,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 15:33:38,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 15:33:38,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 15:33:38,630 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 15:33:38,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:33:10" (1/3) ... [2018-07-22 15:33:38,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac12401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:33:38, skipping insertion in model container [2018-07-22 15:33:38,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:15" (2/3) ... [2018-07-22 15:33:38,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac12401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:33:38, skipping insertion in model container [2018-07-22 15:33:38,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:33:38" (3/3) ... [2018-07-22 15:33:38,634 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label25_true-unreach-call.c [2018-07-22 15:33:38,642 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 15:33:38,650 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 15:33:38,721 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 15:33:38,722 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 15:33:38,722 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 15:33:38,722 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 15:33:38,722 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 15:33:38,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 15:33:38,723 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 15:33:38,723 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 15:33:38,723 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 15:33:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-07-22 15:33:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-22 15:33:38,793 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:33:38,794 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:33:38,794 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:33:38,798 INFO L82 PathProgramCache]: Analyzing trace with hash 680225122, now seen corresponding path program 1 times [2018-07-22 15:33:38,799 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:33:38,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:33:38,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:33:38,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:33:38,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:33:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:33:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:33:39,232 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:33:39,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:33:39,236 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:33:39,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:33:39,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:33:39,254 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-07-22 15:33:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:33:59,225 INFO L93 Difference]: Finished difference Result 6361 states and 12176 transitions. [2018-07-22 15:33:59,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:33:59,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-07-22 15:33:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:33:59,282 INFO L225 Difference]: With dead ends: 6361 [2018-07-22 15:33:59,282 INFO L226 Difference]: Without dead ends: 4605 [2018-07-22 15:33:59,293 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:33:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2018-07-22 15:33:59,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 3148. [2018-07-22 15:33:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2018-07-22 15:33:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5068 transitions. [2018-07-22 15:33:59,488 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5068 transitions. Word has length 37 [2018-07-22 15:33:59,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:33:59,489 INFO L471 AbstractCegarLoop]: Abstraction has 3148 states and 5068 transitions. [2018-07-22 15:33:59,489 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:33:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5068 transitions. [2018-07-22 15:33:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-22 15:33:59,498 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:33:59,499 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:33:59,499 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:33:59,499 INFO L82 PathProgramCache]: Analyzing trace with hash 132437949, now seen corresponding path program 1 times [2018-07-22 15:33:59,500 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:33:59,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:33:59,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:33:59,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:33:59,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:33:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:33:59,995 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-22 15:34:00,616 WARN L169 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2018-07-22 15:34:01,376 WARN L169 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2018-07-22 15:34:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:34:02,220 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:34:02,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 15:34:02,223 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 15:34:02,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 15:34:02,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 15:34:02,224 INFO L87 Difference]: Start difference. First operand 3148 states and 5068 transitions. Second operand 6 states. [2018-07-22 15:34:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:34:26,961 INFO L93 Difference]: Finished difference Result 13170 states and 20020 transitions. [2018-07-22 15:34:26,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 15:34:26,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-07-22 15:34:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:34:27,010 INFO L225 Difference]: With dead ends: 13170 [2018-07-22 15:34:27,011 INFO L226 Difference]: Without dead ends: 10024 [2018-07-22 15:34:27,019 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-07-22 15:34:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2018-07-22 15:34:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 8652. [2018-07-22 15:34:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2018-07-22 15:34:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12036 transitions. [2018-07-22 15:34:27,240 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12036 transitions. Word has length 105 [2018-07-22 15:34:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:34:27,240 INFO L471 AbstractCegarLoop]: Abstraction has 8652 states and 12036 transitions. [2018-07-22 15:34:27,240 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 15:34:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12036 transitions. [2018-07-22 15:34:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-22 15:34:27,259 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:34:27,259 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 15:34:27,259 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:34:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1333873245, now seen corresponding path program 1 times [2018-07-22 15:34:27,260 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:34:27,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:34:27,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:34:27,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:34:27,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:34:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:34:27,956 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-22 15:34:28,438 WARN L169 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 17 [2018-07-22 15:34:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-22 15:34:29,161 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:34:29,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-22 15:34:29,162 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 15:34:29,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 15:34:29,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-22 15:34:29,163 INFO L87 Difference]: Start difference. First operand 8652 states and 12036 transitions. Second operand 7 states. [2018-07-22 15:34:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:34:53,309 INFO L93 Difference]: Finished difference Result 26878 states and 36468 transitions. [2018-07-22 15:34:53,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 15:34:53,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2018-07-22 15:34:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:34:53,372 INFO L225 Difference]: With dead ends: 26878 [2018-07-22 15:34:53,372 INFO L226 Difference]: Without dead ends: 18228 [2018-07-22 15:34:53,384 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-07-22 15:34:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18228 states. [2018-07-22 15:34:53,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18228 to 15493. [2018-07-22 15:34:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15493 states. [2018-07-22 15:34:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 19189 transitions. [2018-07-22 15:34:53,792 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 19189 transitions. Word has length 313 [2018-07-22 15:34:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:34:53,793 INFO L471 AbstractCegarLoop]: Abstraction has 15493 states and 19189 transitions. [2018-07-22 15:34:53,793 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 15:34:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 19189 transitions. [2018-07-22 15:34:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-22 15:34:53,798 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:34:53,798 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 15:34:53,798 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:34:53,801 INFO L82 PathProgramCache]: Analyzing trace with hash 884513923, now seen corresponding path program 1 times [2018-07-22 15:34:53,802 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:34:53,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:34:53,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:34:53,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:34:53,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:34:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:34:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 69 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:34:54,368 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 15:34:54,368 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 15:34:54,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:34:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:34:54,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 15:34:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:34:54,977 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 15:34:54,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-07-22 15:34:54,978 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 15:34:54,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 15:34:54,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:34:54,978 INFO L87 Difference]: Start difference. First operand 15493 states and 19189 transitions. Second operand 5 states. [2018-07-22 15:35:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:35:23,370 INFO L93 Difference]: Finished difference Result 70982 states and 95208 transitions. [2018-07-22 15:35:23,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 15:35:23,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2018-07-22 15:35:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:35:23,479 INFO L225 Difference]: With dead ends: 70982 [2018-07-22 15:35:23,480 INFO L226 Difference]: Without dead ends: 51391 [2018-07-22 15:35:23,505 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-22 15:35:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51391 states. [2018-07-22 15:35:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51391 to 51309. [2018-07-22 15:35:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51309 states. [2018-07-22 15:35:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51309 states to 51309 states and 60476 transitions. [2018-07-22 15:35:24,875 INFO L78 Accepts]: Start accepts. Automaton has 51309 states and 60476 transitions. Word has length 341 [2018-07-22 15:35:24,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:35:24,876 INFO L471 AbstractCegarLoop]: Abstraction has 51309 states and 60476 transitions. [2018-07-22 15:35:24,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 15:35:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 51309 states and 60476 transitions. [2018-07-22 15:35:24,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-22 15:35:24,882 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:35:24,882 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 15:35:24,883 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:35:24,883 INFO L82 PathProgramCache]: Analyzing trace with hash 689091723, now seen corresponding path program 1 times [2018-07-22 15:35:24,883 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:35:24,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:35:24,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:35:24,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:35:24,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:35:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:35:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:35:25,286 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:35:25,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:35:25,288 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:35:25,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:35:25,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:35:25,288 INFO L87 Difference]: Start difference. First operand 51309 states and 60476 transitions. Second operand 4 states. [2018-07-22 15:35:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:35:40,422 INFO L93 Difference]: Finished difference Result 119022 states and 141030 transitions. [2018-07-22 15:35:40,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:35:40,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 351 [2018-07-22 15:35:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:35:40,534 INFO L225 Difference]: With dead ends: 119022 [2018-07-22 15:35:40,534 INFO L226 Difference]: Without dead ends: 63615 [2018-07-22 15:35:40,575 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:35:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63615 states. [2018-07-22 15:35:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63615 to 63603. [2018-07-22 15:35:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63603 states. [2018-07-22 15:35:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63603 states to 63603 states and 71669 transitions. [2018-07-22 15:35:41,387 INFO L78 Accepts]: Start accepts. Automaton has 63603 states and 71669 transitions. Word has length 351 [2018-07-22 15:35:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:35:41,388 INFO L471 AbstractCegarLoop]: Abstraction has 63603 states and 71669 transitions. [2018-07-22 15:35:41,388 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:35:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 63603 states and 71669 transitions. [2018-07-22 15:35:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-07-22 15:35:41,409 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:35:41,409 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 15:35:41,410 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:35:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash 901194910, now seen corresponding path program 1 times [2018-07-22 15:35:41,410 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:35:41,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:35:41,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:35:41,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:35:41,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:35:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:35:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 384 proven. 4 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-22 15:35:42,732 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 15:35:42,733 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 15:35:42,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:35:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:35:42,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 15:35:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-07-22 15:35:43,068 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 15:35:43,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 15:35:43,069 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 15:35:43,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 15:35:43,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-22 15:35:43,070 INFO L87 Difference]: Start difference. First operand 63603 states and 71669 transitions. Second operand 6 states. [2018-07-22 15:36:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:36:13,028 INFO L93 Difference]: Finished difference Result 185967 states and 208301 transitions. [2018-07-22 15:36:13,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 15:36:13,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 577 [2018-07-22 15:36:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:36:13,166 INFO L225 Difference]: With dead ends: 185967 [2018-07-22 15:36:13,167 INFO L226 Difference]: Without dead ends: 115526 [2018-07-22 15:36:13,201 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 577 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-22 15:36:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115526 states. [2018-07-22 15:36:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115526 to 100472. [2018-07-22 15:36:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100472 states. [2018-07-22 15:36:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100472 states to 100472 states and 107429 transitions. [2018-07-22 15:36:14,621 INFO L78 Accepts]: Start accepts. Automaton has 100472 states and 107429 transitions. Word has length 577 [2018-07-22 15:36:14,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:36:14,621 INFO L471 AbstractCegarLoop]: Abstraction has 100472 states and 107429 transitions. [2018-07-22 15:36:14,621 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 15:36:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 100472 states and 107429 transitions. [2018-07-22 15:36:14,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-07-22 15:36:14,639 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:36:14,639 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:36:14,640 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:36:14,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1813261997, now seen corresponding path program 1 times [2018-07-22 15:36:14,640 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:36:14,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:36:14,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:14,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:36:14,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:36:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-22 15:36:15,786 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 15:36:15,786 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-22 15:36:15,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 15:36:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:36:15,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 15:36:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:36:16,194 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 15:36:16,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 15:36:16,196 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:36:16,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:36:16,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:36:16,196 INFO L87 Difference]: Start difference. First operand 100472 states and 107429 transitions. Second operand 4 states. [2018-07-22 15:36:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:36:28,201 INFO L93 Difference]: Finished difference Result 300958 states and 324626 transitions. [2018-07-22 15:36:28,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:36:28,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 622 [2018-07-22 15:36:28,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:36:28,470 INFO L225 Difference]: With dead ends: 300958 [2018-07-22 15:36:28,470 INFO L226 Difference]: Without dead ends: 201854 [2018-07-22 15:36:28,521 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:36:28,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201854 states. [2018-07-22 15:36:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201854 to 138713. [2018-07-22 15:36:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138713 states. [2018-07-22 15:36:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138713 states to 138713 states and 148089 transitions. [2018-07-22 15:36:35,766 INFO L78 Accepts]: Start accepts. Automaton has 138713 states and 148089 transitions. Word has length 622 [2018-07-22 15:36:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:36:35,767 INFO L471 AbstractCegarLoop]: Abstraction has 138713 states and 148089 transitions. [2018-07-22 15:36:35,767 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:36:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 138713 states and 148089 transitions. [2018-07-22 15:36:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2018-07-22 15:36:35,785 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:36:35,787 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 15:36:35,788 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:36:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1240698013, now seen corresponding path program 1 times [2018-07-22 15:36:35,788 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:36:35,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:36:35,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:35,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:36:35,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:36:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-07-22 15:36:36,484 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:36:36,484 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:36:36,485 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:36:36,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:36:36,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:36:36,485 INFO L87 Difference]: Start difference. First operand 138713 states and 148089 transitions. Second operand 4 states. Received shutdown request... [2018-07-22 15:36:48,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:36:48,790 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 15:36:48,794 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 15:36:48,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:36:48 BoogieIcfgContainer [2018-07-22 15:36:48,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 15:36:48,795 INFO L168 Benchmark]: Toolchain (without parser) took 218107.55 ms. Allocated memory was 309.3 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 229.5 MB in the beginning and 707.0 MB in the end (delta: -477.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. [2018-07-22 15:36:48,797 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 15:36:48,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4536.06 ms. Allocated memory was 309.3 MB in the beginning and 409.5 MB in the end (delta: 100.1 MB). Free memory was 229.5 MB in the beginning and 153.0 MB in the end (delta: 76.5 MB). Peak memory consumption was 225.6 MB. Max. memory is 5.3 GB. [2018-07-22 15:36:48,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 2435.94 ms. Allocated memory was 409.5 MB in the beginning and 707.8 MB in the end (delta: 298.3 MB). Free memory was 153.0 MB in the beginning and 423.4 MB in the end (delta: -270.4 MB). Peak memory consumption was 131.4 MB. Max. memory is 5.3 GB. [2018-07-22 15:36:48,799 INFO L168 Benchmark]: Boogie Preprocessor took 1064.04 ms. Allocated memory was 707.8 MB in the beginning and 896.0 MB in the end (delta: 188.2 MB). Free memory was 423.4 MB in the beginning and 607.1 MB in the end (delta: -183.8 MB). Peak memory consumption was 164.5 MB. Max. memory is 5.3 GB. [2018-07-22 15:36:48,799 INFO L168 Benchmark]: RCFGBuilder took 19892.47 ms. Allocated memory was 896.0 MB in the beginning and 1.2 GB in the end (delta: 307.8 MB). Free memory was 607.1 MB in the beginning and 811.7 MB in the end (delta: -204.6 MB). Peak memory consumption was 439.2 MB. Max. memory is 5.3 GB. [2018-07-22 15:36:48,800 INFO L168 Benchmark]: TraceAbstraction took 190167.25 ms. Allocated memory was 1.2 GB in the beginning and 2.6 GB in the end (delta: 1.4 GB). Free memory was 811.7 MB in the beginning and 707.0 MB in the end (delta: 104.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-07-22 15:36:48,805 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 4536.06 ms. Allocated memory was 309.3 MB in the beginning and 409.5 MB in the end (delta: 100.1 MB). Free memory was 229.5 MB in the beginning and 153.0 MB in the end (delta: 76.5 MB). Peak memory consumption was 225.6 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 2435.94 ms. Allocated memory was 409.5 MB in the beginning and 707.8 MB in the end (delta: 298.3 MB). Free memory was 153.0 MB in the beginning and 423.4 MB in the end (delta: -270.4 MB). Peak memory consumption was 131.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1064.04 ms. Allocated memory was 707.8 MB in the beginning and 896.0 MB in the end (delta: 188.2 MB). Free memory was 423.4 MB in the beginning and 607.1 MB in the end (delta: -183.8 MB). Peak memory consumption was 164.5 MB. Max. memory is 5.3 GB. * RCFGBuilder took 19892.47 ms. Allocated memory was 896.0 MB in the beginning and 1.2 GB in the end (delta: 307.8 MB). Free memory was 607.1 MB in the beginning and 811.7 MB in the end (delta: -204.6 MB). Peak memory consumption was 439.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 190167.25 ms. Allocated memory was 1.2 GB in the beginning and 2.6 GB in the end (delta: 1.4 GB). Free memory was 811.7 MB in the beginning and 707.0 MB in the end (delta: 104.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was constructing difference of abstraction (138713states) and interpolant automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (285215 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 190.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 167.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12636 SDtfs, 48914 SDslu, 4806 SDs, 0 SdLazy, 110181 SolverSat, 23330 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 142.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1586 GetRequests, 1548 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138713occurred 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: 11.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 83853 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 4624 NumberOfCodeBlocks, 4624 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4613 ConstructedInterpolants, 0 QuantifiedInterpolants, 7760012 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1844 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2090/2163 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem19_label25_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_15-36-48-817.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem19_label25_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_15-36-48-817.csv Completed graceful shutdown