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_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:38:24,316 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:38:24,318 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:38:24,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:38:24,334 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:38:24,336 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:38:24,338 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:38:24,340 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:38:24,343 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:38:24,352 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:38:24,353 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:38:24,354 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:38:24,355 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:38:24,356 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:38:24,359 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:38:24,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:38:24,360 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:38:24,363 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:38:24,368 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:38:24,370 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:38:24,373 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:38:24,374 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:38:24,378 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:38:24,388 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 [2018-10-23 18:38:24,412 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:38:24,413 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:38:24,413 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:38:24,413 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:38:24,414 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:38:24,414 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:38:24,414 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:38:24,415 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:38:24,415 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:38:24,415 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:38:24,415 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:38:24,416 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:38:24,416 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:38:24,416 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:38:24,416 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:38:24,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:38:24,417 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:38:24,417 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:38:24,417 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:38:24,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:38:24,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:38:24,418 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:38:24,418 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:38:24,418 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:38:24,418 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:38:24,418 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:38:24,419 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:38:24,419 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:38:24,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:38:24,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:38:24,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:38:24,484 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:38:24,484 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:38:24,485 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label14_false-unreach-call.c [2018-10-23 18:38:24,549 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f2f38a63/fc39cf663a0b46a6b5451c1d1671340b/FLAG493e58a46 [2018-10-23 18:38:25,470 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:38:25,472 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label14_false-unreach-call.c [2018-10-23 18:38:25,525 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f2f38a63/fc39cf663a0b46a6b5451c1d1671340b/FLAG493e58a46 [2018-10-23 18:38:25,544 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f2f38a63/fc39cf663a0b46a6b5451c1d1671340b [2018-10-23 18:38:25,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:38:25,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:38:25,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:38:25,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:38:25,569 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:38:25,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:38:25" (1/1) ... [2018-10-23 18:38:25,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27247a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:25, skipping insertion in model container [2018-10-23 18:38:25,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:38:25" (1/1) ... [2018-10-23 18:38:25,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:38:25,861 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:38:27,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:38:27,783 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:38:28,911 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:38:28,965 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:38:28,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28 WrapperNode [2018-10-23 18:38:28,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:38:28,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:38:28,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:38:28,967 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:38:28,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:29,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:30,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:38:30,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:38:30,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:38:30,190 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:38:30,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:30,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:30,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:30,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:30,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:30,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:30,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... [2018-10-23 18:38:30,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:38:30,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:38:30,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:38:30,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:38:30,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:38:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:38:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:38:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:38:48,169 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:38:48,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:38:48 BoogieIcfgContainer [2018-10-23 18:38:48,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:38:48,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:38:48,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:38:48,175 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:38:48,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:38:25" (1/3) ... [2018-10-23 18:38:48,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a6a3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:38:48, skipping insertion in model container [2018-10-23 18:38:48,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:28" (2/3) ... [2018-10-23 18:38:48,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a6a3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:38:48, skipping insertion in model container [2018-10-23 18:38:48,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:38:48" (3/3) ... [2018-10-23 18:38:48,182 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label14_false-unreach-call.c [2018-10-23 18:38:48,192 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:38:48,209 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:38:48,227 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:38:48,281 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:38:48,282 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:38:48,282 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:38:48,282 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:38:48,282 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:38:48,282 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:38:48,282 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:38:48,282 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:38:48,282 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:38:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:38:48,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 18:38:48,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:48,344 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:38:48,347 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:48,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:48,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1534999810, now seen corresponding path program 1 times [2018-10-23 18:38:48,359 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:48,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:48,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:48,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:48,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:38:48,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:38:48,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:38:48,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:38:48,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:38:48,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:48,671 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:39:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:16,083 INFO L93 Difference]: Finished difference Result 6409 states and 12226 transitions. [2018-10-23 18:39:16,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:39:16,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-23 18:39:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:16,143 INFO L225 Difference]: With dead ends: 6409 [2018-10-23 18:39:16,143 INFO L226 Difference]: Without dead ends: 4653 [2018-10-23 18:39:16,153 INFO L605 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 [2018-10-23 18:39:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2018-10-23 18:39:16,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4617. [2018-10-23 18:39:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2018-10-23 18:39:16,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7623 transitions. [2018-10-23 18:39:16,352 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7623 transitions. Word has length 13 [2018-10-23 18:39:16,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:16,353 INFO L481 AbstractCegarLoop]: Abstraction has 4617 states and 7623 transitions. [2018-10-23 18:39:16,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:39:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7623 transitions. [2018-10-23 18:39:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-23 18:39:16,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:16,357 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:39:16,357 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:16,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:16,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1038770723, now seen corresponding path program 1 times [2018-10-23 18:39:16,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:16,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:16,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:16,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:16,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:16,774 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 18:39:17,422 WARN L179 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-23 18:39:18,146 WARN L179 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 18:39:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:39:18,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:39:18,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:39:18,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:39:18,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:39:18,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:39:18,250 INFO L87 Difference]: Start difference. First operand 4617 states and 7623 transitions. Second operand 6 states. [2018-10-23 18:39:22,069 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 18:39:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:58,999 INFO L93 Difference]: Finished difference Result 20192 states and 32413 transitions. [2018-10-23 18:39:58,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:39:58,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2018-10-23 18:39:59,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:59,065 INFO L225 Difference]: With dead ends: 20192 [2018-10-23 18:39:59,065 INFO L226 Difference]: Without dead ends: 15577 [2018-10-23 18:39:59,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:39:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2018-10-23 18:39:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 14204. [2018-10-23 18:39:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14204 states. [2018-10-23 18:39:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 19574 transitions. [2018-10-23 18:39:59,365 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 19574 transitions. Word has length 81 [2018-10-23 18:39:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:59,365 INFO L481 AbstractCegarLoop]: Abstraction has 14204 states and 19574 transitions. [2018-10-23 18:39:59,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:39:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 19574 transitions. [2018-10-23 18:39:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-23 18:39:59,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:59,377 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:39:59,377 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:59,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:59,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1373656699, now seen corresponding path program 1 times [2018-10-23 18:39:59,378 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:59,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:59,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:59,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:59,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-23 18:40:00,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:00,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:40:00,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:40:00,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:40:00,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:40:00,425 INFO L87 Difference]: Start difference. First operand 14204 states and 19574 transitions. Second operand 7 states. [2018-10-23 18:40:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:37,294 INFO L93 Difference]: Finished difference Result 40712 states and 55789 transitions. [2018-10-23 18:40:37,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:40:37,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2018-10-23 18:40:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:37,362 INFO L225 Difference]: With dead ends: 40712 [2018-10-23 18:40:37,362 INFO L226 Difference]: Without dead ends: 26510 [2018-10-23 18:40:37,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:40:37,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26510 states. [2018-10-23 18:40:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26510 to 23774. [2018-10-23 18:40:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23774 states. [2018-10-23 18:40:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23774 states to 23774 states and 29481 transitions. [2018-10-23 18:40:37,795 INFO L78 Accepts]: Start accepts. Automaton has 23774 states and 29481 transitions. Word has length 299 [2018-10-23 18:40:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:37,796 INFO L481 AbstractCegarLoop]: Abstraction has 23774 states and 29481 transitions. [2018-10-23 18:40:37,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:40:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 23774 states and 29481 transitions. [2018-10-23 18:40:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-23 18:40:37,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:37,801 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:40:37,801 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:37,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:37,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1286875605, now seen corresponding path program 1 times [2018-10-23 18:40:37,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:37,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:37,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:37,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:37,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:38,213 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 18:40:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 18:40:38,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:40:38,365 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 [2018-10-23 18:40:38,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:38,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:40:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:38,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:40:38,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:40:38,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:38,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:38,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:38,695 INFO L87 Difference]: Start difference. First operand 23774 states and 29481 transitions. Second operand 4 states. [2018-10-23 18:40:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:59,653 INFO L93 Difference]: Finished difference Result 79222 states and 101661 transitions. [2018-10-23 18:40:59,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:40:59,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2018-10-23 18:40:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:59,762 INFO L225 Difference]: With dead ends: 79222 [2018-10-23 18:40:59,763 INFO L226 Difference]: Without dead ends: 56816 [2018-10-23 18:40:59,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56816 states. [2018-10-23 18:41:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56816 to 34695. [2018-10-23 18:41:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34695 states. [2018-10-23 18:41:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34695 states to 34695 states and 44830 transitions. [2018-10-23 18:41:00,750 INFO L78 Accepts]: Start accepts. Automaton has 34695 states and 44830 transitions. Word has length 327 [2018-10-23 18:41:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:00,751 INFO L481 AbstractCegarLoop]: Abstraction has 34695 states and 44830 transitions. [2018-10-23 18:41:00,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:41:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 34695 states and 44830 transitions. [2018-10-23 18:41:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-23 18:41:00,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:00,759 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:41:00,759 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:00,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1051129623, now seen corresponding path program 1 times [2018-10-23 18:41:00,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:00,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:00,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:00,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:00,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:01,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:41:01,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:41:01,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:41:01,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:41:01,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:41:01,280 INFO L87 Difference]: Start difference. First operand 34695 states and 44830 transitions. Second operand 3 states. [2018-10-23 18:41:14,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:14,580 INFO L93 Difference]: Finished difference Result 87227 states and 116937 transitions. [2018-10-23 18:41:14,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:41:14,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 360 [2018-10-23 18:41:14,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:14,668 INFO L225 Difference]: With dead ends: 87227 [2018-10-23 18:41:14,668 INFO L226 Difference]: Without dead ends: 48434 [2018-10-23 18:41:14,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:41:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48434 states. [2018-10-23 18:41:15,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48434 to 48386. [2018-10-23 18:41:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48386 states. [2018-10-23 18:41:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48386 states to 48386 states and 62301 transitions. [2018-10-23 18:41:15,711 INFO L78 Accepts]: Start accepts. Automaton has 48386 states and 62301 transitions. Word has length 360 [2018-10-23 18:41:15,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:15,712 INFO L481 AbstractCegarLoop]: Abstraction has 48386 states and 62301 transitions. [2018-10-23 18:41:15,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:41:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 48386 states and 62301 transitions. [2018-10-23 18:41:15,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-23 18:41:15,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:15,726 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:41:15,727 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:15,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:15,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1611422899, now seen corresponding path program 1 times [2018-10-23 18:41:15,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:15,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:15,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:15,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:15,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 242 proven. 65 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-23 18:41:16,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:41:16,429 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 [2018-10-23 18:41:16,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:16,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:41:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-23 18:41:16,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:41:16,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:41:16,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:41:16,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:41:16,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:16,935 INFO L87 Difference]: Start difference. First operand 48386 states and 62301 transitions. Second operand 5 states. [2018-10-23 18:41:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:43,404 INFO L93 Difference]: Finished difference Result 203613 states and 269958 transitions. [2018-10-23 18:41:43,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:41:43,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2018-10-23 18:41:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:43,600 INFO L225 Difference]: With dead ends: 203613 [2018-10-23 18:41:43,601 INFO L226 Difference]: Without dead ends: 156595 [2018-10-23 18:41:43,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156595 states. [2018-10-23 18:41:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156595 to 111203. [2018-10-23 18:41:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111203 states. [2018-10-23 18:41:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111203 states to 111203 states and 133601 transitions. [2018-10-23 18:41:45,583 INFO L78 Accepts]: Start accepts. Automaton has 111203 states and 133601 transitions. Word has length 483 [2018-10-23 18:41:45,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:45,583 INFO L481 AbstractCegarLoop]: Abstraction has 111203 states and 133601 transitions. [2018-10-23 18:41:45,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:41:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 111203 states and 133601 transitions. [2018-10-23 18:41:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-10-23 18:41:45,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:45,619 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:41:45,619 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:45,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:45,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1566320655, now seen corresponding path program 1 times [2018-10-23 18:41:45,620 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:45,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:45,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:45,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:45,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:46,623 WARN L179 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-23 18:41:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 708 proven. 4 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2018-10-23 18:41:47,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:41:47,559 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 [2018-10-23 18:41:47,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:48,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:41:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2018-10-23 18:41:49,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:41:49,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 18:41:49,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:41:49,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:41:49,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:49,030 INFO L87 Difference]: Start difference. First operand 111203 states and 133601 transitions. Second operand 5 states. [2018-10-23 18:42:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:11,279 INFO L93 Difference]: Finished difference Result 231968 states and 277242 transitions. [2018-10-23 18:42:11,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:42:11,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2018-10-23 18:42:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:11,412 INFO L225 Difference]: With dead ends: 231968 [2018-10-23 18:42:11,413 INFO L226 Difference]: Without dead ends: 118032 [2018-10-23 18:42:11,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 863 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:42:11,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118032 states. [2018-10-23 18:42:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118032 to 109830. [2018-10-23 18:42:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109830 states. [2018-10-23 18:42:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109830 states to 109830 states and 123617 transitions. [2018-10-23 18:42:13,307 INFO L78 Accepts]: Start accepts. Automaton has 109830 states and 123617 transitions. Word has length 863 [2018-10-23 18:42:13,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:13,307 INFO L481 AbstractCegarLoop]: Abstraction has 109830 states and 123617 transitions. [2018-10-23 18:42:13,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:42:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 109830 states and 123617 transitions. [2018-10-23 18:42:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2018-10-23 18:42:13,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:13,328 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:42:13,329 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:13,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:13,329 INFO L82 PathProgramCache]: Analyzing trace with hash 614805490, now seen corresponding path program 1 times [2018-10-23 18:42:13,329 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:13,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:13,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:13,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:13,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 617 proven. 72 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-23 18:42:15,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:42:15,672 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:42:15,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Received shutdown request... [2018-10-23 18:42:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:15,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:42:15,954 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 18:42:16,156 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:42:16,156 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:42:16,161 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:42:16,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:16 BoogieIcfgContainer [2018-10-23 18:42:16,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:42:16,162 INFO L168 Benchmark]: Toolchain (without parser) took 230602.47 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 18:42:16,163 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:42:16,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3403.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:16,165 INFO L168 Benchmark]: Boogie Procedure Inliner took 1223.06 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 887.6 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:16,166 INFO L168 Benchmark]: Boogie Preprocessor took 801.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 99.8 MB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:16,167 INFO L168 Benchmark]: RCFGBuilder took 17178.82 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 289.4 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -381.5 MB). Peak memory consumption was 839.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:16,168 INFO L168 Benchmark]: TraceAbstraction took 207990.22 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 841.5 MB). Free memory was 2.5 GB in the beginning and 2.2 GB in the end (delta: 250.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 18:42:16,178 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3403.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1223.06 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 887.6 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 801.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 99.8 MB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17178.82 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 289.4 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -381.5 MB). Peak memory consumption was 839.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207990.22 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 841.5 MB). Free memory was 2.5 GB in the beginning and 2.2 GB in the end (delta: 250.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was analyzing trace of length 1035 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 4 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 207.8s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 189.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11248 SDtfs, 38959 SDslu, 3502 SDs, 0 SdLazy, 83510 SolverSat, 16219 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 162.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1712 GetRequests, 1677 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111203occurred in iteration=6, 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: 6.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 79908 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 4099 NumberOfCodeBlocks, 4099 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4089 ConstructedInterpolants, 0 QuantifiedInterpolants, 8436601 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2038 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 3676/3749 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown