java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 03:22:56,126 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 03:22:56,128 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 03:22:56,144 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 03:22:56,144 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 03:22:56,145 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 03:22:56,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 03:22:56,148 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 03:22:56,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 03:22:56,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 03:22:56,151 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 03:22:56,151 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 03:22:56,152 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 03:22:56,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 03:22:56,154 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 03:22:56,155 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 03:22:56,156 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 03:22:56,160 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 03:22:56,162 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 03:22:56,164 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 03:22:56,168 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 03:22:56,169 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 03:22:56,172 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 03:22:56,189 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-24 03:22:56,219 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 03:22:56,220 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 03:22:56,221 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 03:22:56,222 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 03:22:56,222 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 03:22:56,222 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 03:22:56,223 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 03:22:56,223 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 03:22:56,223 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 03:22:56,223 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 03:22:56,224 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 03:22:56,225 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 03:22:56,225 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 03:22:56,225 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 03:22:56,225 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 03:22:56,225 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 03:22:56,226 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 03:22:56,226 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 03:22:56,226 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 03:22:56,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 03:22:56,228 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 03:22:56,228 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 03:22:56,228 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 03:22:56,228 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 03:22:56,228 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 03:22:56,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 03:22:56,229 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 03:22:56,229 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 03:22:56,280 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 03:22:56,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 03:22:56,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 03:22:56,303 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 03:22:56,303 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 03:22:56,304 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c [2018-07-24 03:22:56,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e767469e/a925d322fdb84a3d8cc40d383a4d9bb4/FLAG4d382cf5e [2018-07-24 03:22:57,069 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 03:22:57,070 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c [2018-07-24 03:22:57,097 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e767469e/a925d322fdb84a3d8cc40d383a4d9bb4/FLAG4d382cf5e [2018-07-24 03:22:57,113 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e767469e/a925d322fdb84a3d8cc40d383a4d9bb4 [2018-07-24 03:22:57,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 03:22:57,126 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 03:22:57,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 03:22:57,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 03:22:57,134 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 03:22:57,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:22:57" (1/1) ... [2018-07-24 03:22:57,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ada2354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:57, skipping insertion in model container [2018-07-24 03:22:57,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:22:57" (1/1) ... [2018-07-24 03:22:57,489 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 03:22:58,306 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:22:58,323 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 03:22:58,827 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:22:58,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58 WrapperNode [2018-07-24 03:22:58,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 03:22:58,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 03:22:58,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 03:22:58,982 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 03:22:58,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 03:22:59,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 03:22:59,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 03:22:59,259 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 03:22:59,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... [2018-07-24 03:22:59,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 03:22:59,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 03:22:59,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 03:22:59,972 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 03:22:59,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 03:23:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 03:23:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 03:23:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 03:23:08,521 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 03:23:08,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:23:08 BoogieIcfgContainer [2018-07-24 03:23:08,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 03:23:08,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 03:23:08,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 03:23:08,527 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 03:23:08,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:22:57" (1/3) ... [2018-07-24 03:23:08,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fe7c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:23:08, skipping insertion in model container [2018-07-24 03:23:08,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:58" (2/3) ... [2018-07-24 03:23:08,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fe7c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:23:08, skipping insertion in model container [2018-07-24 03:23:08,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:23:08" (3/3) ... [2018-07-24 03:23:08,532 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label05_true-unreach-call.c [2018-07-24 03:23:08,541 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 03:23:08,550 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 03:23:08,606 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 03:23:08,607 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 03:23:08,608 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 03:23:08,608 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 03:23:08,608 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 03:23:08,608 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 03:23:08,608 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 03:23:08,608 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 03:23:08,609 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 03:23:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-07-24 03:23:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-24 03:23:08,651 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:08,652 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:23:08,652 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:08,657 INFO L82 PathProgramCache]: Analyzing trace with hash 861450858, now seen corresponding path program 1 times [2018-07-24 03:23:08,659 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:08,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:08,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:08,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:08,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:23:09,270 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:23:09,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 03:23:09,276 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 03:23:09,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 03:23:09,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:23:09,295 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 6 states. [2018-07-24 03:23:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:27,939 INFO L93 Difference]: Finished difference Result 4292 states and 8414 transitions. [2018-07-24 03:23:27,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 03:23:27,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-07-24 03:23:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:28,063 INFO L225 Difference]: With dead ends: 4292 [2018-07-24 03:23:28,064 INFO L226 Difference]: Without dead ends: 3521 [2018-07-24 03:23:28,074 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-07-24 03:23:28,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2018-07-24 03:23:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 2828. [2018-07-24 03:23:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2018-07-24 03:23:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 4092 transitions. [2018-07-24 03:23:28,234 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 4092 transitions. Word has length 39 [2018-07-24 03:23:28,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:28,235 INFO L471 AbstractCegarLoop]: Abstraction has 2828 states and 4092 transitions. [2018-07-24 03:23:28,235 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 03:23:28,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 4092 transitions. [2018-07-24 03:23:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-24 03:23:28,241 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:28,242 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:23:28,242 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:28,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1811919841, now seen corresponding path program 1 times [2018-07-24 03:23:28,242 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:28,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:28,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:28,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:28,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:23:28,869 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:23:28,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:23:28,871 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:23:28,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:23:28,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:23:28,872 INFO L87 Difference]: Start difference. First operand 2828 states and 4092 transitions. Second operand 5 states. [2018-07-24 03:23:41,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:41,116 INFO L93 Difference]: Finished difference Result 8418 states and 12613 transitions. [2018-07-24 03:23:41,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:23:41,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-07-24 03:23:41,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:41,145 INFO L225 Difference]: With dead ends: 8418 [2018-07-24 03:23:41,145 INFO L226 Difference]: Without dead ends: 5592 [2018-07-24 03:23:41,150 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:23:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2018-07-24 03:23:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5592. [2018-07-24 03:23:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5592 states. [2018-07-24 03:23:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7127 transitions. [2018-07-24 03:23:41,250 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7127 transitions. Word has length 133 [2018-07-24 03:23:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:41,250 INFO L471 AbstractCegarLoop]: Abstraction has 5592 states and 7127 transitions. [2018-07-24 03:23:41,251 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:23:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7127 transitions. [2018-07-24 03:23:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-24 03:23:41,262 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:41,263 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:23:41,263 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2086719875, now seen corresponding path program 1 times [2018-07-24 03:23:41,263 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:41,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:41,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:41,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:41,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:23:41,696 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:23:41,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:23:41,696 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:23:41,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:23:41,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:23:41,697 INFO L87 Difference]: Start difference. First operand 5592 states and 7127 transitions. Second operand 4 states. [2018-07-24 03:23:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:48,834 INFO L93 Difference]: Finished difference Result 14637 states and 20425 transitions. [2018-07-24 03:23:48,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:23:48,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2018-07-24 03:23:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:48,878 INFO L225 Difference]: With dead ends: 14637 [2018-07-24 03:23:48,878 INFO L226 Difference]: Without dead ends: 9738 [2018-07-24 03:23:48,885 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:23:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9738 states. [2018-07-24 03:23:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9738 to 9738. [2018-07-24 03:23:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9738 states. [2018-07-24 03:23:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 13027 transitions. [2018-07-24 03:23:49,071 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 13027 transitions. Word has length 222 [2018-07-24 03:23:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:49,072 INFO L471 AbstractCegarLoop]: Abstraction has 9738 states and 13027 transitions. [2018-07-24 03:23:49,072 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:23:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 13027 transitions. [2018-07-24 03:23:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-24 03:23:49,084 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:49,085 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:23:49,085 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:49,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1425270718, now seen corresponding path program 1 times [2018-07-24 03:23:49,085 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:49,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:49,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:49,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:49,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 190 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:23:49,636 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:23:49,636 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:23:49,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:49,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:23:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:23:50,031 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:23:50,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-24 03:23:50,032 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 03:23:50,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 03:23:50,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:23:50,033 INFO L87 Difference]: Start difference. First operand 9738 states and 13027 transitions. Second operand 6 states. [2018-07-24 03:24:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:04,301 INFO L93 Difference]: Finished difference Result 32618 states and 45204 transitions. [2018-07-24 03:24:04,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 03:24:04,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 344 [2018-07-24 03:24:04,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:04,363 INFO L225 Difference]: With dead ends: 32618 [2018-07-24 03:24:04,364 INFO L226 Difference]: Without dead ends: 19423 [2018-07-24 03:24:04,380 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 344 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:24:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19423 states. [2018-07-24 03:24:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19423 to 14573. [2018-07-24 03:24:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14573 states. [2018-07-24 03:24:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14573 states to 14573 states and 16795 transitions. [2018-07-24 03:24:04,694 INFO L78 Accepts]: Start accepts. Automaton has 14573 states and 16795 transitions. Word has length 344 [2018-07-24 03:24:04,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:04,694 INFO L471 AbstractCegarLoop]: Abstraction has 14573 states and 16795 transitions. [2018-07-24 03:24:04,695 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 03:24:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 14573 states and 16795 transitions. [2018-07-24 03:24:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2018-07-24 03:24:04,737 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:04,738 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:24:04,738 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:04,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1021773054, now seen corresponding path program 1 times [2018-07-24 03:24:04,739 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:04,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:04,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:04,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:04,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2018-07-24 03:24:06,558 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:24:06,558 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:24:06,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:06,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:24:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-07-24 03:24:07,522 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:24:07,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-07-24 03:24:07,525 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:24:07,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:24:07,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:24:07,526 INFO L87 Difference]: Start difference. First operand 14573 states and 16795 transitions. Second operand 5 states. [2018-07-24 03:24:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:15,374 INFO L93 Difference]: Finished difference Result 47801 states and 57454 transitions. [2018-07-24 03:24:15,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 03:24:15,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1043 [2018-07-24 03:24:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:15,444 INFO L225 Difference]: With dead ends: 47801 [2018-07-24 03:24:15,444 INFO L226 Difference]: Without dead ends: 33921 [2018-07-24 03:24:15,459 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:24:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33921 states. [2018-07-24 03:24:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33921 to 33230. [2018-07-24 03:24:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33230 states. [2018-07-24 03:24:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33230 states to 33230 states and 37141 transitions. [2018-07-24 03:24:15,874 INFO L78 Accepts]: Start accepts. Automaton has 33230 states and 37141 transitions. Word has length 1043 [2018-07-24 03:24:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:15,876 INFO L471 AbstractCegarLoop]: Abstraction has 33230 states and 37141 transitions. [2018-07-24 03:24:15,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:24:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 33230 states and 37141 transitions. [2018-07-24 03:24:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2018-07-24 03:24:15,924 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:15,925 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:24:15,925 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:15,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1101238492, now seen corresponding path program 1 times [2018-07-24 03:24:15,926 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:15,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:15,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:15,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:15,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-07-24 03:24:17,479 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:24:17,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:24:17,480 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:24:17,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:24:17,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:24:17,481 INFO L87 Difference]: Start difference. First operand 33230 states and 37141 transitions. Second operand 4 states. [2018-07-24 03:24:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:23,675 INFO L93 Difference]: Finished difference Result 78205 states and 87507 transitions. [2018-07-24 03:24:23,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:24:23,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1064 [2018-07-24 03:24:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:23,763 INFO L225 Difference]: With dead ends: 78205 [2018-07-24 03:24:23,764 INFO L226 Difference]: Without dead ends: 45668 [2018-07-24 03:24:23,802 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:24:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45668 states. [2018-07-24 03:24:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45668 to 45668. [2018-07-24 03:24:24,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45668 states. [2018-07-24 03:24:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45668 states to 45668 states and 49937 transitions. [2018-07-24 03:24:24,316 INFO L78 Accepts]: Start accepts. Automaton has 45668 states and 49937 transitions. Word has length 1064 [2018-07-24 03:24:24,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:24,317 INFO L471 AbstractCegarLoop]: Abstraction has 45668 states and 49937 transitions. [2018-07-24 03:24:24,317 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:24:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 45668 states and 49937 transitions. [2018-07-24 03:24:24,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2018-07-24 03:24:24,347 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:24,348 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:24:24,348 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:24,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1599482280, now seen corresponding path program 1 times [2018-07-24 03:24:24,349 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:24,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:24,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:24,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:24,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:25,110 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-07-24 03:24:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 872 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2018-07-24 03:24:25,781 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:24:25,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:24:25,783 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:24:25,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:24:25,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:24:25,783 INFO L87 Difference]: Start difference. First operand 45668 states and 49937 transitions. Second operand 4 states. [2018-07-24 03:24:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:31,597 INFO L93 Difference]: Finished difference Result 100317 states and 110222 transitions. [2018-07-24 03:24:31,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:24:31,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1200 [2018-07-24 03:24:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:31,708 INFO L225 Difference]: With dead ends: 100317 [2018-07-24 03:24:31,709 INFO L226 Difference]: Without dead ends: 55342 [2018-07-24 03:24:31,740 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:24:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55342 states. [2018-07-24 03:24:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55342 to 54651. [2018-07-24 03:24:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54651 states. [2018-07-24 03:24:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54651 states to 54651 states and 59058 transitions. [2018-07-24 03:24:32,359 INFO L78 Accepts]: Start accepts. Automaton has 54651 states and 59058 transitions. Word has length 1200 [2018-07-24 03:24:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:32,361 INFO L471 AbstractCegarLoop]: Abstraction has 54651 states and 59058 transitions. [2018-07-24 03:24:32,361 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:24:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 54651 states and 59058 transitions. [2018-07-24 03:24:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2018-07-24 03:24:32,403 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:32,404 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:24:32,405 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:32,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1594542467, now seen corresponding path program 1 times [2018-07-24 03:24:32,405 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:32,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:32,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:32,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:32,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 1460 trivial. 0 not checked. [2018-07-24 03:24:33,800 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:24:33,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:24:33,801 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:24:33,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:24:33,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:24:33,802 INFO L87 Difference]: Start difference. First operand 54651 states and 59058 transitions. Second operand 3 states. [2018-07-24 03:24:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:37,786 INFO L93 Difference]: Finished difference Result 134867 states and 146849 transitions. [2018-07-24 03:24:37,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:24:37,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1222 [2018-07-24 03:24:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:37,874 INFO L225 Difference]: With dead ends: 134867 [2018-07-24 03:24:37,874 INFO L226 Difference]: Without dead ends: 80909 [2018-07-24 03:24:37,902 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:24:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80909 states. [2018-07-24 03:24:38,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80909 to 80909. [2018-07-24 03:24:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80909 states. [2018-07-24 03:24:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80909 states to 80909 states and 87138 transitions. [2018-07-24 03:24:38,624 INFO L78 Accepts]: Start accepts. Automaton has 80909 states and 87138 transitions. Word has length 1222 [2018-07-24 03:24:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:38,625 INFO L471 AbstractCegarLoop]: Abstraction has 80909 states and 87138 transitions. [2018-07-24 03:24:38,626 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:24:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 80909 states and 87138 transitions. [2018-07-24 03:24:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2018-07-24 03:24:38,670 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:38,671 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:24:38,671 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:38,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1848428016, now seen corresponding path program 1 times [2018-07-24 03:24:38,673 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:38,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:38,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:38,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:38,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:39,727 WARN L169 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-07-24 03:24:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 977 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-07-24 03:24:40,811 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:24:40,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:24:40,813 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:24:40,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:24:40,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:24:40,813 INFO L87 Difference]: Start difference. First operand 80909 states and 87138 transitions. Second operand 4 states. [2018-07-24 03:24:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:47,605 INFO L93 Difference]: Finished difference Result 161816 states and 174275 transitions. [2018-07-24 03:24:47,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:24:47,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1242 [2018-07-24 03:24:47,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:47,688 INFO L225 Difference]: With dead ends: 161816 [2018-07-24 03:24:47,688 INFO L226 Difference]: Without dead ends: 81600 [2018-07-24 03:24:47,730 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:24:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81600 states. [2018-07-24 03:24:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81600 to 80909. [2018-07-24 03:24:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80909 states. [2018-07-24 03:24:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80909 states to 80909 states and 86616 transitions. [2018-07-24 03:24:48,362 INFO L78 Accepts]: Start accepts. Automaton has 80909 states and 86616 transitions. Word has length 1242 [2018-07-24 03:24:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:48,362 INFO L471 AbstractCegarLoop]: Abstraction has 80909 states and 86616 transitions. [2018-07-24 03:24:48,363 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:24:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 80909 states and 86616 transitions. [2018-07-24 03:24:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1288 [2018-07-24 03:24:48,401 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:48,402 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:24:48,402 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:48,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2112538397, now seen corresponding path program 1 times [2018-07-24 03:24:48,403 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:48,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:48,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:48,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:48,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 1068 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2018-07-24 03:24:50,209 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:24:50,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:24:50,210 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:24:50,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:24:50,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:24:50,211 INFO L87 Difference]: Start difference. First operand 80909 states and 86616 transitions. Second operand 4 states. [2018-07-24 03:24:56,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:56,655 INFO L93 Difference]: Finished difference Result 172181 states and 184577 transitions. [2018-07-24 03:24:56,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:24:56,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1287 [2018-07-24 03:24:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:56,744 INFO L225 Difference]: With dead ends: 172181 [2018-07-24 03:24:56,744 INFO L226 Difference]: Without dead ends: 87807 [2018-07-24 03:24:56,788 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:24:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87807 states. [2018-07-24 03:24:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87807 to 87116. [2018-07-24 03:24:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87116 states. [2018-07-24 03:24:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87116 states to 87116 states and 91661 transitions. [2018-07-24 03:24:58,102 INFO L78 Accepts]: Start accepts. Automaton has 87116 states and 91661 transitions. Word has length 1287 [2018-07-24 03:24:58,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:58,103 INFO L471 AbstractCegarLoop]: Abstraction has 87116 states and 91661 transitions. [2018-07-24 03:24:58,103 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:24:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 87116 states and 91661 transitions. [2018-07-24 03:24:58,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1489 [2018-07-24 03:24:58,142 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:58,144 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:24:58,144 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash -970528831, now seen corresponding path program 1 times [2018-07-24 03:24:58,145 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:58,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:58,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:58,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:58,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:25:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2663 backedges. 1359 proven. 1061 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-07-24 03:25:02,787 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:25:02,788 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:25:02,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:25:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:25:03,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:25:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2663 backedges. 1674 proven. 0 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2018-07-24 03:25:04,534 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:25:04,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2018-07-24 03:25:04,536 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 03:25:04,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 03:25:04,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 03:25:04,537 INFO L87 Difference]: Start difference. First operand 87116 states and 91661 transitions. Second operand 11 states. [2018-07-24 03:25:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:25:24,529 INFO L93 Difference]: Finished difference Result 207344 states and 218356 transitions. [2018-07-24 03:25:24,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-24 03:25:24,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1488 [2018-07-24 03:25:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:25:24,665 INFO L225 Difference]: With dead ends: 207344 [2018-07-24 03:25:24,665 INFO L226 Difference]: Without dead ends: 120921 [2018-07-24 03:25:24,719 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1528 GetRequests, 1502 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2018-07-24 03:25:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120921 states. [2018-07-24 03:25:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120921 to 87116. [2018-07-24 03:25:25,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87116 states. [2018-07-24 03:25:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87116 states to 87116 states and 90240 transitions. [2018-07-24 03:25:25,616 INFO L78 Accepts]: Start accepts. Automaton has 87116 states and 90240 transitions. Word has length 1488 [2018-07-24 03:25:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:25:25,617 INFO L471 AbstractCegarLoop]: Abstraction has 87116 states and 90240 transitions. [2018-07-24 03:25:25,617 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 03:25:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 87116 states and 90240 transitions. [2018-07-24 03:25:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1567 [2018-07-24 03:25:25,663 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:25:25,664 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:25:25,664 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:25:25,665 INFO L82 PathProgramCache]: Analyzing trace with hash -150554104, now seen corresponding path program 1 times [2018-07-24 03:25:25,665 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:25:25,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:25:25,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:25:25,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:25:25,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:25:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:25:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2672 backedges. 1649 proven. 0 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2018-07-24 03:25:28,213 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:25:28,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 03:25:28,214 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 03:25:28,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 03:25:28,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:25:28,215 INFO L87 Difference]: Start difference. First operand 87116 states and 90240 transitions. Second operand 6 states. [2018-07-24 03:25:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:25:34,715 INFO L93 Difference]: Finished difference Result 172351 states and 178565 transitions. [2018-07-24 03:25:34,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 03:25:34,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1566 [2018-07-24 03:25:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:25:34,798 INFO L225 Difference]: With dead ends: 172351 [2018-07-24 03:25:34,798 INFO L226 Difference]: Without dead ends: 85928 [2018-07-24 03:25:34,840 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:25:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85928 states. [2018-07-24 03:25:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85928 to 85732. [2018-07-24 03:25:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85732 states. [2018-07-24 03:25:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85732 states to 85732 states and 88455 transitions. [2018-07-24 03:25:35,869 INFO L78 Accepts]: Start accepts. Automaton has 85732 states and 88455 transitions. Word has length 1566 [2018-07-24 03:25:35,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:25:35,870 INFO L471 AbstractCegarLoop]: Abstraction has 85732 states and 88455 transitions. [2018-07-24 03:25:35,870 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 03:25:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 85732 states and 88455 transitions. [2018-07-24 03:25:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2018-07-24 03:25:35,924 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:25:35,925 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:25:35,925 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:25:35,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1542632251, now seen corresponding path program 1 times [2018-07-24 03:25:35,925 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:25:35,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:25:35,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:25:35,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:25:35,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:25:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:25:36,926 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 03:25:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1579 proven. 585 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2018-07-24 03:25:40,306 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:25:40,306 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 03:25:40,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:25:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:25:40,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:25:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1713 proven. 0 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2018-07-24 03:25:42,357 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:25:42,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-07-24 03:25:42,360 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 03:25:42,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 03:25:42,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-24 03:25:42,361 INFO L87 Difference]: Start difference. First operand 85732 states and 88455 transitions. Second operand 10 states. [2018-07-24 03:26:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:26:03,456 INFO L93 Difference]: Finished difference Result 327600 states and 338320 transitions. [2018-07-24 03:26:03,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-24 03:26:03,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1690 [2018-07-24 03:26:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:26:03,783 INFO L225 Difference]: With dead ends: 327600 [2018-07-24 03:26:03,784 INFO L226 Difference]: Without dead ends: 209902 [2018-07-24 03:26:03,853 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1723 GetRequests, 1702 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-07-24 03:26:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209902 states. [2018-07-24 03:26:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209902 to 87772. [2018-07-24 03:26:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87772 states. [2018-07-24 03:26:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87772 states to 87772 states and 89685 transitions. [2018-07-24 03:26:05,219 INFO L78 Accepts]: Start accepts. Automaton has 87772 states and 89685 transitions. Word has length 1690 [2018-07-24 03:26:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:26:05,220 INFO L471 AbstractCegarLoop]: Abstraction has 87772 states and 89685 transitions. [2018-07-24 03:26:05,220 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 03:26:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 87772 states and 89685 transitions. [2018-07-24 03:26:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2029 [2018-07-24 03:26:05,287 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:26:05,288 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:26:05,288 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:26:05,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1883907896, now seen corresponding path program 1 times [2018-07-24 03:26:05,289 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:26:05,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:26:05,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:26:05,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:26:05,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:26:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:26:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3580 backedges. 2797 proven. 70 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2018-07-24 03:26:08,742 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:26:08,742 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 03:26:08,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:26:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:26:09,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:26:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3580 backedges. 1703 proven. 0 refuted. 0 times theorem prover too weak. 1877 trivial. 0 not checked. [2018-07-24 03:26:15,569 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:26:15,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-07-24 03:26:15,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 03:26:15,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 03:26:15,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:26:15,574 INFO L87 Difference]: Start difference. First operand 87772 states and 89685 transitions. Second operand 6 states. Received shutdown request... [2018-07-24 03:26:51,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 03:26:51,446 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 03:26:51,452 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 03:26:51,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:26:51 BoogieIcfgContainer [2018-07-24 03:26:51,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 03:26:51,454 INFO L168 Benchmark]: Toolchain (without parser) took 234329.26 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-24 03:26:51,455 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-07-24 03:26:51,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1855.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:51,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:51,457 INFO L168 Benchmark]: Boogie Preprocessor took 713.26 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 902.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 108.2 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:51,458 INFO L168 Benchmark]: RCFGBuilder took 8550.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 563.4 MB). Peak memory consumption was 563.4 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:51,459 INFO L168 Benchmark]: TraceAbstraction took 222928.96 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -733.8 MB). Peak memory consumption was 883.6 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:51,464 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1855.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 276.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 713.26 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 902.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 108.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8550.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 563.4 MB). Peak memory consumption was 563.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222928.96 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -733.8 MB). Peak memory consumption was 883.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (87772states) and interpolant automaton (currently 6 states, 6 states before enhancement), while ReachableStatesComputation was computing reachable states (27130 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 222.8s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 174.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6947 SDtfs, 47690 SDslu, 2330 SDs, 0 SdLazy, 89031 SolverSat, 16652 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 144.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6739 GetRequests, 6638 SyntacticMatches, 13 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87772occurred in iteration=13, 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: 8.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 164438 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 21161 NumberOfCodeBlocks, 21161 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 21142 ConstructedInterpolants, 583 QuantifiedInterpolants, 81178036 SizeOfPredicates, 2 NumberOfNonLiveVariables, 7552 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 27251/28973 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label05_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_03-26-51-478.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label05_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_03-26-51-478.csv Completed graceful shutdown