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/loops/sum01_bug02_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:45:06,531 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:45:06,533 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:45:06,551 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:45:06,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:45:06,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:45:06,554 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:45:06,557 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:45:06,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:45:06,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:45:06,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:45:06,561 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:45:06,562 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:45:06,563 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:45:06,565 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:45:06,566 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:45:06,566 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:45:06,569 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:45:06,571 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:45:06,572 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:45:06,574 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:45:06,575 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:45:06,578 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:45:06,589 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 11:45:06,611 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:45:06,611 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:45:06,612 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:45:06,612 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:45:06,613 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:45:06,613 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:45:06,613 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:45:06,614 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:45:06,614 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:45:06,614 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:45:06,614 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:45:06,615 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:45:06,615 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:45:06,615 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:45:06,615 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:45:06,615 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:45:06,616 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:45:06,616 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:45:06,616 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:45:06,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:45:06,617 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:45:06,617 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:45:06,617 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:45:06,617 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:45:06,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:45:06,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:45:06,618 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:45:06,618 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:45:06,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:45:06,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:45:06,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:45:06,683 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:45:06,684 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:45:06,684 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_false-unreach-call_true-termination.i [2018-10-24 11:45:06,740 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a717bf53d/00407b558c8a4d22a0d5f370e94cfae9/FLAG15c4933f8 [2018-10-24 11:45:07,193 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:45:07,193 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02_false-unreach-call_true-termination.i [2018-10-24 11:45:07,201 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a717bf53d/00407b558c8a4d22a0d5f370e94cfae9/FLAG15c4933f8 [2018-10-24 11:45:07,216 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a717bf53d/00407b558c8a4d22a0d5f370e94cfae9 [2018-10-24 11:45:07,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:45:07,231 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:45:07,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:45:07,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:45:07,239 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:45:07,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b704e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07, skipping insertion in model container [2018-10-24 11:45:07,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:45:07,283 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:45:07,524 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:45:07,528 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:45:07,548 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:45:07,566 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:45:07,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07 WrapperNode [2018-10-24 11:45:07,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:45:07,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:45:07,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:45:07,568 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:45:07,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:45:07,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:45:07,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:45:07,602 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:45:07,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... [2018-10-24 11:45:07,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:45:07,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:45:07,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:45:07,626 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:45:07,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:45:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:45:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:45:07,967 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:45:07,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:07 BoogieIcfgContainer [2018-10-24 11:45:07,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:45:07,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:45:07,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:45:07,973 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:45:07,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:45:07" (1/3) ... [2018-10-24 11:45:07,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d0f4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:07, skipping insertion in model container [2018-10-24 11:45:07,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:07" (2/3) ... [2018-10-24 11:45:07,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d0f4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:07, skipping insertion in model container [2018-10-24 11:45:07,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:07" (3/3) ... [2018-10-24 11:45:07,977 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02_false-unreach-call_true-termination.i [2018-10-24 11:45:07,988 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:45:07,998 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:45:08,055 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:45:08,106 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:45:08,107 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:45:08,107 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:45:08,108 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:45:08,108 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:45:08,108 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:45:08,108 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:45:08,108 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:45:08,109 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:45:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-10-24 11:45:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-24 11:45:08,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:08,142 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-24 11:45:08,144 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:08,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash 890030055, now seen corresponding path program 1 times [2018-10-24 11:45:08,154 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:08,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:08,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:08,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:08,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:08,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:08,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 11:45:08,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 11:45:08,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 11:45:08,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:45:08,304 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-10-24 11:45:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:08,321 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2018-10-24 11:45:08,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 11:45:08,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-10-24 11:45:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:08,332 INFO L225 Difference]: With dead ends: 23 [2018-10-24 11:45:08,332 INFO L226 Difference]: Without dead ends: 11 [2018-10-24 11:45:08,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:45:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-24 11:45:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-24 11:45:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-24 11:45:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-24 11:45:08,368 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-10-24 11:45:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:08,368 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-24 11:45:08,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 11:45:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-24 11:45:08,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-24 11:45:08,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:08,369 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:08,370 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:08,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:08,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1805901812, now seen corresponding path program 1 times [2018-10-24 11:45:08,370 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:08,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:08,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:08,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:08,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:08,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:08,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 11:45:08,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 11:45:08,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 11:45:08,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:45:08,467 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-10-24 11:45:08,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:08,526 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-10-24 11:45:08,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 11:45:08,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-24 11:45:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:08,528 INFO L225 Difference]: With dead ends: 20 [2018-10-24 11:45:08,528 INFO L226 Difference]: Without dead ends: 16 [2018-10-24 11:45:08,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 11:45:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-24 11:45:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-24 11:45:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-24 11:45:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-10-24 11:45:08,534 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 7 [2018-10-24 11:45:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:08,534 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-10-24 11:45:08,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 11:45:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-10-24 11:45:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 11:45:08,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:08,535 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:08,536 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:08,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:08,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1175427889, now seen corresponding path program 1 times [2018-10-24 11:45:08,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:08,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:08,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:08,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:08,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:08,959 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-24 11:45:09,189 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-24 11:45:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:09,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:09,214 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:09,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:09,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:09,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:09,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-10-24 11:45:09,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 11:45:09,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 11:45:09,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-10-24 11:45:09,988 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 13 states. [2018-10-24 11:45:10,796 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-10-24 11:45:10,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:10,896 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2018-10-24 11:45:10,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 11:45:10,897 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-10-24 11:45:10,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:10,900 INFO L225 Difference]: With dead ends: 41 [2018-10-24 11:45:10,900 INFO L226 Difference]: Without dead ends: 35 [2018-10-24 11:45:10,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2018-10-24 11:45:10,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-24 11:45:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2018-10-24 11:45:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-24 11:45:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-10-24 11:45:10,909 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2018-10-24 11:45:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:10,910 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-10-24 11:45:10,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 11:45:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-10-24 11:45:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 11:45:10,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:10,911 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:10,912 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:10,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash 227655126, now seen corresponding path program 1 times [2018-10-24 11:45:10,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:10,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:10,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:10,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:10,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 11:45:10,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:10,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 11:45:10,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 11:45:10,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 11:45:10,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:45:10,961 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2018-10-24 11:45:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:10,985 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-10-24 11:45:10,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 11:45:10,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-10-24 11:45:10,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:10,988 INFO L225 Difference]: With dead ends: 37 [2018-10-24 11:45:10,988 INFO L226 Difference]: Without dead ends: 23 [2018-10-24 11:45:10,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:45:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-24 11:45:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-24 11:45:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-24 11:45:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-24 11:45:10,994 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2018-10-24 11:45:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:10,994 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-24 11:45:10,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 11:45:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-24 11:45:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 11:45:10,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:10,995 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:10,996 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:10,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:10,996 INFO L82 PathProgramCache]: Analyzing trace with hash 5114514, now seen corresponding path program 2 times [2018-10-24 11:45:10,996 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:10,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:10,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:10,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:10,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:11,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:11,069 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:11,082 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:45:11,094 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:45:11,094 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:45:11,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:11,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:11,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-24 11:45:11,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 11:45:11,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 11:45:11,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:45:11,196 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2018-10-24 11:45:11,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:11,284 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-10-24 11:45:11,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 11:45:11,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-24 11:45:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:11,286 INFO L225 Difference]: With dead ends: 32 [2018-10-24 11:45:11,286 INFO L226 Difference]: Without dead ends: 23 [2018-10-24 11:45:11,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:45:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-24 11:45:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-24 11:45:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-24 11:45:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-24 11:45:11,291 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2018-10-24 11:45:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:11,292 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-24 11:45:11,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 11:45:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-24 11:45:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 11:45:11,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:11,293 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:11,293 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:11,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:11,294 INFO L82 PathProgramCache]: Analyzing trace with hash 728398253, now seen corresponding path program 3 times [2018-10-24 11:45:11,294 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:11,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:11,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:11,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:45:11,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:11,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:11,388 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:11,405 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:45:11,440 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-24 11:45:11,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:45:11,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:11,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:11,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-24 11:45:11,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 11:45:11,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 11:45:11,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:45:11,606 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-10-24 11:45:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:11,739 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-10-24 11:45:11,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 11:45:11,740 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-24 11:45:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:11,741 INFO L225 Difference]: With dead ends: 34 [2018-10-24 11:45:11,742 INFO L226 Difference]: Without dead ends: 25 [2018-10-24 11:45:11,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:45:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-24 11:45:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-10-24 11:45:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-24 11:45:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-10-24 11:45:11,747 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2018-10-24 11:45:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:11,748 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-10-24 11:45:11,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 11:45:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-10-24 11:45:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 11:45:11,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:11,749 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:11,749 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:11,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1537744879, now seen corresponding path program 2 times [2018-10-24 11:45:11,750 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:11,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:11,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:11,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:45:11,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 11:45:12,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:12,026 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 [2018-10-24 11:45:12,038 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:45:12,061 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:45:12,061 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:45:12,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:12,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:12,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2018-10-24 11:45:12,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 11:45:12,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 11:45:12,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-10-24 11:45:12,340 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 18 states. [2018-10-24 11:45:13,457 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 11:45:13,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:13,477 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-24 11:45:13,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 11:45:13,478 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2018-10-24 11:45:13,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:13,478 INFO L225 Difference]: With dead ends: 44 [2018-10-24 11:45:13,479 INFO L226 Difference]: Without dead ends: 38 [2018-10-24 11:45:13,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2018-10-24 11:45:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-24 11:45:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2018-10-24 11:45:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-24 11:45:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-24 11:45:13,485 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2018-10-24 11:45:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:13,485 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-24 11:45:13,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 11:45:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-24 11:45:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 11:45:13,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:13,487 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:13,487 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:13,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:13,487 INFO L82 PathProgramCache]: Analyzing trace with hash 701383538, now seen corresponding path program 4 times [2018-10-24 11:45:13,487 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:13,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:13,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:13,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:45:13,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:13,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:13,596 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:13,607 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 11:45:13,624 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 11:45:13,624 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:45:13,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:13,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:13,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-10-24 11:45:13,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 11:45:13,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 11:45:13,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-24 11:45:13,758 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 16 states. [2018-10-24 11:45:13,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:13,868 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-24 11:45:13,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 11:45:13,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2018-10-24 11:45:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:13,870 INFO L225 Difference]: With dead ends: 44 [2018-10-24 11:45:13,870 INFO L226 Difference]: Without dead ends: 35 [2018-10-24 11:45:13,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-24 11:45:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-24 11:45:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-10-24 11:45:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-24 11:45:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-24 11:45:13,876 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 27 [2018-10-24 11:45:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:13,877 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-24 11:45:13,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 11:45:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-24 11:45:13,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 11:45:13,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:13,878 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:13,878 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:13,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:13,879 INFO L82 PathProgramCache]: Analyzing trace with hash -7680819, now seen corresponding path program 5 times [2018-10-24 11:45:13,879 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:13,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:13,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:13,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:45:13,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:14,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:14,042 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:14,050 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 11:45:14,074 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-24 11:45:14,075 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:45:14,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:14,280 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:14,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-10-24 11:45:14,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 11:45:14,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 11:45:14,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-24 11:45:14,282 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 20 states. [2018-10-24 11:45:14,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:14,402 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-10-24 11:45:14,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 11:45:14,403 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 32 [2018-10-24 11:45:14,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:14,404 INFO L225 Difference]: With dead ends: 50 [2018-10-24 11:45:14,404 INFO L226 Difference]: Without dead ends: 41 [2018-10-24 11:45:14,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-24 11:45:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-24 11:45:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-10-24 11:45:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-24 11:45:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-10-24 11:45:14,410 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 32 [2018-10-24 11:45:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:14,410 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-10-24 11:45:14,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 11:45:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-10-24 11:45:14,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 11:45:14,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:14,412 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:14,412 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:14,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:14,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1031478190, now seen corresponding path program 6 times [2018-10-24 11:45:14,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:14,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:14,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:14,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:45:14,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 11:45:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 11:45:14,464 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-24 11:45:14,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:45:14 BoogieIcfgContainer [2018-10-24 11:45:14,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 11:45:14,492 INFO L168 Benchmark]: Toolchain (without parser) took 7262.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -392.0 MB). Peak memory consumption was 347.2 MB. Max. memory is 7.1 GB. [2018-10-24 11:45:14,493 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. [2018-10-24 11:45:14,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 11:45:14,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.77 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:45:14,495 INFO L168 Benchmark]: Boogie Preprocessor took 23.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:45:14,496 INFO L168 Benchmark]: RCFGBuilder took 342.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-24 11:45:14,497 INFO L168 Benchmark]: TraceAbstraction took 6522.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 389.5 MB). Peak memory consumption was 389.5 MB. Max. memory is 7.1 GB. [2018-10-24 11:45:14,501 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 334.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 33.77 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 342.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6522.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 389.5 MB). Peak memory consumption was 389.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] COND TRUE i