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/Problem14_label53_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 03:00:31,579 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 03:00:31,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 03:00:31,593 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 03:00:31,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 03:00:31,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 03:00:31,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 03:00:31,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 03:00:31,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 03:00:31,600 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 03:00:31,601 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 03:00:31,602 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 03:00:31,603 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 03:00:31,606 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 03:00:31,607 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 03:00:31,608 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 03:00:31,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 03:00:31,619 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 03:00:31,623 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 03:00:31,625 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 03:00:31,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 03:00:31,629 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 03:00:31,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 03:00:31,650 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 03:00:31,674 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 03:00:31,674 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 03:00:31,675 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 03:00:31,676 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 03:00:31,677 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 03:00:31,677 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 03:00:31,677 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 03:00:31,677 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 03:00:31,678 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 03:00:31,678 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 03:00:31,678 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 03:00:31,678 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 03:00:31,679 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 03:00:31,679 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 03:00:31,680 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 03:00:31,680 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 03:00:31,680 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 03:00:31,680 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 03:00:31,680 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 03:00:31,681 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 03:00:31,681 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 03:00:31,681 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 03:00:31,681 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 03:00:31,682 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 03:00:31,683 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 03:00:31,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 03:00:31,683 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 03:00:31,683 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 03:00:31,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 03:00:31,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 03:00:31,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 03:00:31,770 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 03:00:31,771 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 03:00:31,771 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-07-24 03:00:32,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e3feff3/3620600dec144b659b3034a9a380290d/FLAGe2f1536e1 [2018-07-24 03:00:32,388 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 03:00:32,389 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-07-24 03:00:32,411 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e3feff3/3620600dec144b659b3034a9a380290d/FLAGe2f1536e1 [2018-07-24 03:00:32,432 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e3feff3/3620600dec144b659b3034a9a380290d [2018-07-24 03:00:32,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 03:00:32,443 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 03:00:32,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 03:00:32,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 03:00:32,450 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 03:00:32,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:00:32" (1/1) ... [2018-07-24 03:00:32,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c24640d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:32, skipping insertion in model container [2018-07-24 03:00:32,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:00:32" (1/1) ... [2018-07-24 03:00:32,696 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 03:00:33,038 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:00:33,055 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 03:00:33,170 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:00:33,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33 WrapperNode [2018-07-24 03:00:33,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 03:00:33,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 03:00:33,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 03:00:33,219 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 03:00:33,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 03:00:33,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 03:00:33,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 03:00:33,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 03:00:33,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (1/1) ... [2018-07-24 03:00:33,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 03:00:33,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 03:00:33,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 03:00:33,624 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 03:00:33,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (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 03:00:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 03:00:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 03:00:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 03:00:37,238 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 03:00:37,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:00:37 BoogieIcfgContainer [2018-07-24 03:00:37,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 03:00:37,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 03:00:37,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 03:00:37,243 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 03:00:37,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:00:32" (1/3) ... [2018-07-24 03:00:37,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e781f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:00:37, skipping insertion in model container [2018-07-24 03:00:37,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:33" (2/3) ... [2018-07-24 03:00:37,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e781f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:00:37, skipping insertion in model container [2018-07-24 03:00:37,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:00:37" (3/3) ... [2018-07-24 03:00:37,248 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label53_true-unreach-call_false-termination.c [2018-07-24 03:00:37,256 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 03:00:37,264 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 03:00:37,317 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 03:00:37,318 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 03:00:37,318 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 03:00:37,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 03:00:37,319 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 03:00:37,319 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 03:00:37,319 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 03:00:37,319 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 03:00:37,320 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 03:00:37,344 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2018-07-24 03:00:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-24 03:00:37,353 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:00:37,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:00:37,355 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:00:37,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1705034714, now seen corresponding path program 1 times [2018-07-24 03:00:37,362 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:00:37,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:00:37,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:37,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:00:37,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:00:37,834 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 03:00:38,057 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 03:00:38,060 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:00:38,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 03:00:38,066 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 03:00:38,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 03:00:38,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:00:38,086 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 6 states. [2018-07-24 03:00:42,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:00:42,816 INFO L93 Difference]: Finished difference Result 1038 states and 1923 transitions. [2018-07-24 03:00:42,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:00:42,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2018-07-24 03:00:42,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:00:42,846 INFO L225 Difference]: With dead ends: 1038 [2018-07-24 03:00:42,846 INFO L226 Difference]: Without dead ends: 782 [2018-07-24 03:00:42,852 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:00:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2018-07-24 03:00:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 782. [2018-07-24 03:00:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2018-07-24 03:00:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1281 transitions. [2018-07-24 03:00:42,946 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1281 transitions. Word has length 50 [2018-07-24 03:00:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:00:42,947 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1281 transitions. [2018-07-24 03:00:42,947 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 03:00:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1281 transitions. [2018-07-24 03:00:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-24 03:00:42,960 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:00:42,960 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, 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, 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 03:00:42,960 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:00:42,961 INFO L82 PathProgramCache]: Analyzing trace with hash -534938702, now seen corresponding path program 1 times [2018-07-24 03:00:42,961 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:00:42,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:00:42,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:42,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:00:42,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:00:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-07-24 03:00:43,196 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:00:43,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:00:43,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:00:43,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:00:43,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:00:43,200 INFO L87 Difference]: Start difference. First operand 782 states and 1281 transitions. Second operand 4 states. [2018-07-24 03:00:45,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:00:45,238 INFO L93 Difference]: Finished difference Result 1918 states and 3226 transitions. [2018-07-24 03:00:45,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:00:45,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-07-24 03:00:45,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:00:45,247 INFO L225 Difference]: With dead ends: 1918 [2018-07-24 03:00:45,247 INFO L226 Difference]: Without dead ends: 1138 [2018-07-24 03:00:45,250 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:00:45,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2018-07-24 03:00:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2018-07-24 03:00:45,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2018-07-24 03:00:45,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1701 transitions. [2018-07-24 03:00:45,283 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1701 transitions. Word has length 200 [2018-07-24 03:00:45,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:00:45,284 INFO L471 AbstractCegarLoop]: Abstraction has 1138 states and 1701 transitions. [2018-07-24 03:00:45,284 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:00:45,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1701 transitions. [2018-07-24 03:00:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-24 03:00:45,291 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:00:45,292 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:00:45,292 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:00:45,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1814615908, now seen corresponding path program 1 times [2018-07-24 03:00:45,292 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:00:45,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:00:45,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:45,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:00:45,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:00:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 152 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 03:00:45,646 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:00:45,647 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 03:00:45,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:00:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:00:45,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:00:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 03:00:46,008 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:00:46,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-24 03:00:46,010 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 03:00:46,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 03:00:46,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:00:46,011 INFO L87 Difference]: Start difference. First operand 1138 states and 1701 transitions. Second operand 6 states. [2018-07-24 03:00:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:00:52,620 INFO L93 Difference]: Finished difference Result 4080 states and 6374 transitions. [2018-07-24 03:00:52,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 03:00:52,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2018-07-24 03:00:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:00:52,635 INFO L225 Difference]: With dead ends: 4080 [2018-07-24 03:00:52,635 INFO L226 Difference]: Without dead ends: 2763 [2018-07-24 03:00:52,637 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 222 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 03:00:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2018-07-24 03:00:52,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 1853. [2018-07-24 03:00:52,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1853 states. [2018-07-24 03:00:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2181 transitions. [2018-07-24 03:00:52,681 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2181 transitions. Word has length 223 [2018-07-24 03:00:52,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:00:52,681 INFO L471 AbstractCegarLoop]: Abstraction has 1853 states and 2181 transitions. [2018-07-24 03:00:52,682 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 03:00:52,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2181 transitions. [2018-07-24 03:00:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-07-24 03:00:52,691 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:00:52,691 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:00:52,692 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:00:52,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1945460121, now seen corresponding path program 1 times [2018-07-24 03:00:52,692 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:00:52,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:00:52,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:52,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:00:52,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:00:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2018-07-24 03:00:53,278 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:00:53,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:00:53,279 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:00:53,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:00:53,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:00:53,280 INFO L87 Difference]: Start difference. First operand 1853 states and 2181 transitions. Second operand 4 states. [2018-07-24 03:00:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:00:55,972 INFO L93 Difference]: Finished difference Result 5852 states and 7101 transitions. [2018-07-24 03:00:55,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:00:55,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 425 [2018-07-24 03:00:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:00:55,993 INFO L225 Difference]: With dead ends: 5852 [2018-07-24 03:00:55,993 INFO L226 Difference]: Without dead ends: 4180 [2018-07-24 03:00:55,997 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:00:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2018-07-24 03:00:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4001. [2018-07-24 03:00:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2018-07-24 03:00:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 4667 transitions. [2018-07-24 03:00:56,071 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 4667 transitions. Word has length 425 [2018-07-24 03:00:56,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:00:56,072 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 4667 transitions. [2018-07-24 03:00:56,073 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:00:56,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 4667 transitions. [2018-07-24 03:00:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-07-24 03:00:56,087 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:00:56,088 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 03:00:56,088 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:00:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1170448801, now seen corresponding path program 1 times [2018-07-24 03:00:56,088 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:00:56,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:00:56,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:56,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:00:56,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:00:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:00:56,831 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 03:00:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 522 proven. 81 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-07-24 03:00:57,454 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:00:57,454 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 03:00:57,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:00:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:00:57,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:00:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-07-24 03:00:58,101 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:00:58,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2018-07-24 03:00:58,102 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 03:00:58,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 03:00:58,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 03:00:58,103 INFO L87 Difference]: Start difference. First operand 4001 states and 4667 transitions. Second operand 8 states. [2018-07-24 03:01:00,103 WARN L169 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-07-24 03:01:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:04,962 INFO L93 Difference]: Finished difference Result 10974 states and 12827 transitions. [2018-07-24 03:01:04,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 03:01:04,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 522 [2018-07-24 03:01:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:04,994 INFO L225 Difference]: With dead ends: 10974 [2018-07-24 03:01:04,995 INFO L226 Difference]: Without dead ends: 7154 [2018-07-24 03:01:05,001 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 03:01:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2018-07-24 03:01:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 5275. [2018-07-24 03:01:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5275 states. [2018-07-24 03:01:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 6189 transitions. [2018-07-24 03:01:05,123 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 6189 transitions. Word has length 522 [2018-07-24 03:01:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:05,124 INFO L471 AbstractCegarLoop]: Abstraction has 5275 states and 6189 transitions. [2018-07-24 03:01:05,124 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 03:01:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 6189 transitions. [2018-07-24 03:01:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-07-24 03:01:05,143 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:05,144 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:05,144 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1869283549, now seen corresponding path program 1 times [2018-07-24 03:01:05,145 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:05,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:05,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:05,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:05,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:05,689 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 03:01:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 556 proven. 46 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-07-24 03:01:06,144 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:01:06,145 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 03:01:06,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:06,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:01:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 579 proven. 23 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-07-24 03:01:06,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:01:06,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-07-24 03:01:06,922 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 03:01:06,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 03:01:06,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 03:01:06,922 INFO L87 Difference]: Start difference. First operand 5275 states and 6189 transitions. Second operand 9 states. [2018-07-24 03:01:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:09,876 INFO L93 Difference]: Finished difference Result 10616 states and 12447 transitions. [2018-07-24 03:01:09,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 03:01:09,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 546 [2018-07-24 03:01:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:09,899 INFO L225 Difference]: With dead ends: 10616 [2018-07-24 03:01:09,899 INFO L226 Difference]: Without dead ends: 5251 [2018-07-24 03:01:09,907 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2018-07-24 03:01:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2018-07-24 03:01:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 5004. [2018-07-24 03:01:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5004 states. [2018-07-24 03:01:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 5891 transitions. [2018-07-24 03:01:09,998 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 5891 transitions. Word has length 546 [2018-07-24 03:01:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:09,999 INFO L471 AbstractCegarLoop]: Abstraction has 5004 states and 5891 transitions. [2018-07-24 03:01:09,999 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 03:01:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 5891 transitions. [2018-07-24 03:01:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2018-07-24 03:01:10,025 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:10,026 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-07-24 03:01:10,026 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:10,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2099207171, now seen corresponding path program 1 times [2018-07-24 03:01:10,027 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:10,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:10,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:10,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:10,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1213 backedges. 848 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-07-24 03:01:10,862 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:10,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:01:10,863 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:01:10,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:01:10,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:01:10,863 INFO L87 Difference]: Start difference. First operand 5004 states and 5891 transitions. Second operand 3 states. [2018-07-24 03:01:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:12,035 INFO L93 Difference]: Finished difference Result 11428 states and 13719 transitions. [2018-07-24 03:01:12,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:01:12,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 636 [2018-07-24 03:01:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:12,062 INFO L225 Difference]: With dead ends: 11428 [2018-07-24 03:01:12,063 INFO L226 Difference]: Without dead ends: 6605 [2018-07-24 03:01:12,070 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 03:01:12,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2018-07-24 03:01:12,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 5975. [2018-07-24 03:01:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5975 states. [2018-07-24 03:01:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 7028 transitions. [2018-07-24 03:01:12,167 INFO L78 Accepts]: Start accepts. Automaton has 5975 states and 7028 transitions. Word has length 636 [2018-07-24 03:01:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:12,168 INFO L471 AbstractCegarLoop]: Abstraction has 5975 states and 7028 transitions. [2018-07-24 03:01:12,168 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:01:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5975 states and 7028 transitions. [2018-07-24 03:01:12,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2018-07-24 03:01:12,180 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:12,180 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, 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, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:01:12,180 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:12,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1463670819, now seen corresponding path program 1 times [2018-07-24 03:01:12,181 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:12,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:12,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:12,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:12,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:12,965 WARN L169 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-07-24 03:01:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 999 proven. 0 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2018-07-24 03:01:13,393 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:13,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 03:01:13,394 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:01:13,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:01:13,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:01:13,394 INFO L87 Difference]: Start difference. First operand 5975 states and 7028 transitions. Second operand 7 states. [2018-07-24 03:01:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:15,863 INFO L93 Difference]: Finished difference Result 12541 states and 14725 transitions. [2018-07-24 03:01:15,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 03:01:15,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 639 [2018-07-24 03:01:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:15,880 INFO L225 Difference]: With dead ends: 12541 [2018-07-24 03:01:15,880 INFO L226 Difference]: Without dead ends: 6151 [2018-07-24 03:01:15,888 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:01:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2018-07-24 03:01:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 5972. [2018-07-24 03:01:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5972 states. [2018-07-24 03:01:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5972 states to 5972 states and 6890 transitions. [2018-07-24 03:01:15,967 INFO L78 Accepts]: Start accepts. Automaton has 5972 states and 6890 transitions. Word has length 639 [2018-07-24 03:01:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:15,967 INFO L471 AbstractCegarLoop]: Abstraction has 5972 states and 6890 transitions. [2018-07-24 03:01:15,968 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:01:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5972 states and 6890 transitions. [2018-07-24 03:01:15,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2018-07-24 03:01:15,977 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:15,977 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 03:01:15,978 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:15,978 INFO L82 PathProgramCache]: Analyzing trace with hash 778161491, now seen corresponding path program 1 times [2018-07-24 03:01:15,978 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:15,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:15,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:15,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:15,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:16,748 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 03:01:16,975 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 03:01:17,200 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 03:01:17,439 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 03:01:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 719 proven. 174 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-07-24 03:01:18,135 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:01:18,135 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 03:01:18,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:18,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:01:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 864 proven. 29 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-07-24 03:01:19,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:01:19,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 8 [2018-07-24 03:01:19,452 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 03:01:19,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 03:01:19,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-24 03:01:19,452 INFO L87 Difference]: Start difference. First operand 5972 states and 6890 transitions. Second operand 9 states. [2018-07-24 03:01:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:24,709 INFO L93 Difference]: Finished difference Result 15754 states and 17951 transitions. [2018-07-24 03:01:24,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 03:01:24,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 681 [2018-07-24 03:01:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:24,727 INFO L225 Difference]: With dead ends: 15754 [2018-07-24 03:01:24,728 INFO L226 Difference]: Without dead ends: 9963 [2018-07-24 03:01:24,738 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-07-24 03:01:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9963 states. [2018-07-24 03:01:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9963 to 8421. [2018-07-24 03:01:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2018-07-24 03:01:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 9601 transitions. [2018-07-24 03:01:24,867 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 9601 transitions. Word has length 681 [2018-07-24 03:01:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:24,868 INFO L471 AbstractCegarLoop]: Abstraction has 8421 states and 9601 transitions. [2018-07-24 03:01:24,868 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 03:01:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 9601 transitions. [2018-07-24 03:01:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2018-07-24 03:01:24,879 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:24,880 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, 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, 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, 3, 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] [2018-07-24 03:01:24,880 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:24,880 INFO L82 PathProgramCache]: Analyzing trace with hash -168607302, now seen corresponding path program 1 times [2018-07-24 03:01:24,880 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:24,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:24,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:24,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:24,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 1129 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-07-24 03:01:25,377 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:25,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:01:25,378 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:01:25,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:01:25,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:01:25,379 INFO L87 Difference]: Start difference. First operand 8421 states and 9601 transitions. Second operand 3 states. [2018-07-24 03:01:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:26,435 INFO L93 Difference]: Finished difference Result 19123 states and 21838 transitions. [2018-07-24 03:01:26,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:01:26,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 709 [2018-07-24 03:01:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:26,452 INFO L225 Difference]: With dead ends: 19123 [2018-07-24 03:01:26,452 INFO L226 Difference]: Without dead ends: 10883 [2018-07-24 03:01:26,462 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:01:26,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10883 states. [2018-07-24 03:01:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10883 to 10738. [2018-07-24 03:01:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10738 states. [2018-07-24 03:01:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10738 states to 10738 states and 12111 transitions. [2018-07-24 03:01:26,616 INFO L78 Accepts]: Start accepts. Automaton has 10738 states and 12111 transitions. Word has length 709 [2018-07-24 03:01:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:26,616 INFO L471 AbstractCegarLoop]: Abstraction has 10738 states and 12111 transitions. [2018-07-24 03:01:26,617 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:01:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 10738 states and 12111 transitions. [2018-07-24 03:01:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2018-07-24 03:01:26,630 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:26,630 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, 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 03:01:26,631 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:26,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1704965007, now seen corresponding path program 1 times [2018-07-24 03:01:26,631 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:26,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:26,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:26,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:26,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2311 backedges. 1489 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2018-07-24 03:01:27,477 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:27,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:01:27,478 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:01:27,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:01:27,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:01:27,479 INFO L87 Difference]: Start difference. First operand 10738 states and 12111 transitions. Second operand 4 states. [2018-07-24 03:01:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:28,878 INFO L93 Difference]: Finished difference Result 24802 states and 28320 transitions. [2018-07-24 03:01:28,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:01:28,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 865 [2018-07-24 03:01:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:28,899 INFO L225 Difference]: With dead ends: 24802 [2018-07-24 03:01:28,899 INFO L226 Difference]: Without dead ends: 14245 [2018-07-24 03:01:28,911 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 03:01:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2018-07-24 03:01:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 13457. [2018-07-24 03:01:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13457 states. [2018-07-24 03:01:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13457 states to 13457 states and 14961 transitions. [2018-07-24 03:01:29,103 INFO L78 Accepts]: Start accepts. Automaton has 13457 states and 14961 transitions. Word has length 865 [2018-07-24 03:01:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:29,104 INFO L471 AbstractCegarLoop]: Abstraction has 13457 states and 14961 transitions. [2018-07-24 03:01:29,104 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:01:29,104 INFO L276 IsEmpty]: Start isEmpty. Operand 13457 states and 14961 transitions. [2018-07-24 03:01:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2018-07-24 03:01:29,116 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:29,117 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, 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:01:29,117 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1003385662, now seen corresponding path program 1 times [2018-07-24 03:01:29,118 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:29,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:29,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:29,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:29,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:29,743 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 03:01:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2329 backedges. 1510 proven. 330 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-07-24 03:01:31,185 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:01:31,185 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 03:01:31,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:31,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:01:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2329 backedges. 1546 proven. 93 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2018-07-24 03:01:32,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:01:32,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 9 [2018-07-24 03:01:32,307 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 03:01:32,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 03:01:32,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 03:01:32,308 INFO L87 Difference]: Start difference. First operand 13457 states and 14961 transitions. Second operand 10 states. [2018-07-24 03:01:35,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:35,412 INFO L93 Difference]: Finished difference Result 27435 states and 30539 transitions. [2018-07-24 03:01:35,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 03:01:35,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 883 [2018-07-24 03:01:35,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:35,428 INFO L225 Difference]: With dead ends: 27435 [2018-07-24 03:01:35,428 INFO L226 Difference]: Without dead ends: 14159 [2018-07-24 03:01:35,440 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2018-07-24 03:01:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14159 states. [2018-07-24 03:01:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14159 to 14035. [2018-07-24 03:01:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14035 states. [2018-07-24 03:01:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14035 states to 14035 states and 15454 transitions. [2018-07-24 03:01:35,623 INFO L78 Accepts]: Start accepts. Automaton has 14035 states and 15454 transitions. Word has length 883 [2018-07-24 03:01:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:35,624 INFO L471 AbstractCegarLoop]: Abstraction has 14035 states and 15454 transitions. [2018-07-24 03:01:35,624 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 03:01:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 14035 states and 15454 transitions. [2018-07-24 03:01:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2018-07-24 03:01:35,637 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:35,637 INFO L353 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:01:35,638 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:35,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1719850170, now seen corresponding path program 1 times [2018-07-24 03:01:35,638 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:35,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:35,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:35,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:35,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1599 proven. 0 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2018-07-24 03:01:36,703 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:36,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 03:01:36,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:01:36,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:01:36,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:01:36,704 INFO L87 Difference]: Start difference. First operand 14035 states and 15454 transitions. Second operand 5 states. [2018-07-24 03:01:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:38,543 INFO L93 Difference]: Finished difference Result 30176 states and 33172 transitions. [2018-07-24 03:01:38,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:01:38,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 961 [2018-07-24 03:01:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:38,556 INFO L225 Difference]: With dead ends: 30176 [2018-07-24 03:01:38,556 INFO L226 Difference]: Without dead ends: 16322 [2018-07-24 03:01:38,566 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:01:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16322 states. [2018-07-24 03:01:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16322 to 14757. [2018-07-24 03:01:38,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14757 states. [2018-07-24 03:01:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14757 states to 14757 states and 16254 transitions. [2018-07-24 03:01:38,724 INFO L78 Accepts]: Start accepts. Automaton has 14757 states and 16254 transitions. Word has length 961 [2018-07-24 03:01:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:38,724 INFO L471 AbstractCegarLoop]: Abstraction has 14757 states and 16254 transitions. [2018-07-24 03:01:38,724 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:01:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 14757 states and 16254 transitions. [2018-07-24 03:01:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2018-07-24 03:01:38,750 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:38,750 INFO L353 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:01:38,751 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash -941401790, now seen corresponding path program 1 times [2018-07-24 03:01:38,751 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:38,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:38,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:38,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:38,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 3602 proven. 1364 refuted. 0 times theorem prover too weak. 2144 trivial. 0 not checked. [2018-07-24 03:01:42,297 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:01:42,297 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:01:42,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:42,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:01:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 4474 proven. 252 refuted. 0 times theorem prover too weak. 2384 trivial. 0 not checked. [2018-07-24 03:01:45,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:01:45,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2018-07-24 03:01:45,142 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 03:01:45,142 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 03:01:45,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 03:01:45,143 INFO L87 Difference]: Start difference. First operand 14757 states and 16254 transitions. Second operand 10 states. [2018-07-24 03:01:49,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:49,055 INFO L93 Difference]: Finished difference Result 29469 states and 32462 transitions. [2018-07-24 03:01:49,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 03:01:49,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1501 [2018-07-24 03:01:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:49,071 INFO L225 Difference]: With dead ends: 29469 [2018-07-24 03:01:49,071 INFO L226 Difference]: Without dead ends: 14893 [2018-07-24 03:01:49,082 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1518 GetRequests, 1500 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-07-24 03:01:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14893 states. [2018-07-24 03:01:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14893 to 14578. [2018-07-24 03:01:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14578 states. [2018-07-24 03:01:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14578 states to 14578 states and 15836 transitions. [2018-07-24 03:01:49,260 INFO L78 Accepts]: Start accepts. Automaton has 14578 states and 15836 transitions. Word has length 1501 [2018-07-24 03:01:49,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:49,261 INFO L471 AbstractCegarLoop]: Abstraction has 14578 states and 15836 transitions. [2018-07-24 03:01:49,261 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 03:01:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 14578 states and 15836 transitions. [2018-07-24 03:01:49,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2018-07-24 03:01:49,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:49,284 INFO L353 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:01:49,285 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:49,285 INFO L82 PathProgramCache]: Analyzing trace with hash 553030891, now seen corresponding path program 1 times [2018-07-24 03:01:49,285 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:49,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:49,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:49,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:49,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:50,977 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 03:01:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8077 backedges. 3333 proven. 1026 refuted. 0 times theorem prover too weak. 3718 trivial. 0 not checked. [2018-07-24 03:01:53,110 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:01:53,111 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:01:53,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:53,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:01:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8077 backedges. 3333 proven. 0 refuted. 0 times theorem prover too weak. 4744 trivial. 0 not checked. [2018-07-24 03:01:55,265 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:01:55,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2018-07-24 03:01:55,267 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:01:55,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:01:55,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:01:55,267 INFO L87 Difference]: Start difference. First operand 14578 states and 15836 transitions. Second operand 7 states. [2018-07-24 03:01:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:56,973 INFO L93 Difference]: Finished difference Result 28833 states and 31325 transitions. [2018-07-24 03:01:56,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 03:01:56,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1578 [2018-07-24 03:01:56,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:56,986 INFO L225 Difference]: With dead ends: 28833 [2018-07-24 03:01:56,986 INFO L226 Difference]: Without dead ends: 14256 [2018-07-24 03:01:56,994 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:01:57,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14256 states. [2018-07-24 03:01:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14256 to 13538. [2018-07-24 03:01:57,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13538 states. [2018-07-24 03:01:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13538 states to 13538 states and 14584 transitions. [2018-07-24 03:01:57,164 INFO L78 Accepts]: Start accepts. Automaton has 13538 states and 14584 transitions. Word has length 1578 [2018-07-24 03:01:57,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:57,164 INFO L471 AbstractCegarLoop]: Abstraction has 13538 states and 14584 transitions. [2018-07-24 03:01:57,164 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:01:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 13538 states and 14584 transitions. [2018-07-24 03:01:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1610 [2018-07-24 03:01:57,187 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:57,188 INFO L353 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 6, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:01:57,188 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:57,189 INFO L82 PathProgramCache]: Analyzing trace with hash -15421041, now seen corresponding path program 1 times [2018-07-24 03:01:57,189 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:57,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:57,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:57,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:57,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:58,566 WARN L169 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-07-24 03:01:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8360 backedges. 1603 proven. 0 refuted. 0 times theorem prover too weak. 6757 trivial. 0 not checked. [2018-07-24 03:01:59,882 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:59,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:01:59,883 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:01:59,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:01:59,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:01:59,883 INFO L87 Difference]: Start difference. First operand 13538 states and 14584 transitions. Second operand 4 states. [2018-07-24 03:02:01,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:01,253 INFO L93 Difference]: Finished difference Result 26420 states and 28494 transitions. [2018-07-24 03:02:01,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:01,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1609 [2018-07-24 03:02:01,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:01,266 INFO L225 Difference]: With dead ends: 26420 [2018-07-24 03:02:01,266 INFO L226 Difference]: Without dead ends: 13063 [2018-07-24 03:02:01,275 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13063 states. [2018-07-24 03:02:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13063 to 12752. [2018-07-24 03:02:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12752 states. [2018-07-24 03:02:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12752 states to 12752 states and 13456 transitions. [2018-07-24 03:02:01,419 INFO L78 Accepts]: Start accepts. Automaton has 12752 states and 13456 transitions. Word has length 1609 [2018-07-24 03:02:01,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:01,420 INFO L471 AbstractCegarLoop]: Abstraction has 12752 states and 13456 transitions. [2018-07-24 03:02:01,420 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:02:01,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12752 states and 13456 transitions. [2018-07-24 03:02:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1670 [2018-07-24 03:02:01,442 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:01,443 INFO L353 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:01,443 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash -50606189, now seen corresponding path program 1 times [2018-07-24 03:02:01,444 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:01,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:01,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:01,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:01,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8630 backedges. 2763 proven. 0 refuted. 0 times theorem prover too weak. 5867 trivial. 0 not checked. [2018-07-24 03:02:04,315 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:04,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 03:02:04,316 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:02:04,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:02:04,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:02:04,316 INFO L87 Difference]: Start difference. First operand 12752 states and 13456 transitions. Second operand 7 states. [2018-07-24 03:02:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:06,980 INFO L93 Difference]: Finished difference Result 26067 states and 27528 transitions. [2018-07-24 03:02:06,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 03:02:06,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1669 [2018-07-24 03:02:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:06,992 INFO L225 Difference]: With dead ends: 26067 [2018-07-24 03:02:06,993 INFO L226 Difference]: Without dead ends: 12725 [2018-07-24 03:02:07,000 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:02:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12725 states. [2018-07-24 03:02:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12725 to 12725. [2018-07-24 03:02:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12725 states. [2018-07-24 03:02:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 13404 transitions. [2018-07-24 03:02:07,134 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 13404 transitions. Word has length 1669 [2018-07-24 03:02:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:07,135 INFO L471 AbstractCegarLoop]: Abstraction has 12725 states and 13404 transitions. [2018-07-24 03:02:07,135 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:02:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 13404 transitions. [2018-07-24 03:02:07,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2018-07-24 03:02:07,153 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:07,153 INFO L353 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:07,154 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 487171339, now seen corresponding path program 1 times [2018-07-24 03:02:07,154 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:07,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:07,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:07,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:07,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8598 backedges. 2918 proven. 0 refuted. 0 times theorem prover too weak. 5680 trivial. 0 not checked. [2018-07-24 03:02:09,166 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:09,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:02:09,167 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:02:09,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:02:09,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:09,168 INFO L87 Difference]: Start difference. First operand 12725 states and 13404 transitions. Second operand 4 states. [2018-07-24 03:02:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:10,365 INFO L93 Difference]: Finished difference Result 23692 states and 24946 transitions. [2018-07-24 03:02:10,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:10,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1676 [2018-07-24 03:02:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:10,371 INFO L225 Difference]: With dead ends: 23692 [2018-07-24 03:02:10,371 INFO L226 Difference]: Without dead ends: 5674 [2018-07-24 03:02:10,377 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 03:02:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2018-07-24 03:02:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 5495. [2018-07-24 03:02:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5495 states. [2018-07-24 03:02:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5495 states to 5495 states and 5635 transitions. [2018-07-24 03:02:10,430 INFO L78 Accepts]: Start accepts. Automaton has 5495 states and 5635 transitions. Word has length 1676 [2018-07-24 03:02:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:10,431 INFO L471 AbstractCegarLoop]: Abstraction has 5495 states and 5635 transitions. [2018-07-24 03:02:10,431 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:02:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states and 5635 transitions. [2018-07-24 03:02:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1695 [2018-07-24 03:02:10,448 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:10,449 INFO L353 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:10,449 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:10,449 INFO L82 PathProgramCache]: Analyzing trace with hash 514040899, now seen corresponding path program 1 times [2018-07-24 03:02:10,449 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:10,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:10,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:10,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:10,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8704 backedges. 2760 proven. 0 refuted. 0 times theorem prover too weak. 5944 trivial. 0 not checked. [2018-07-24 03:02:12,944 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:12,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 03:02:12,946 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:02:12,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:02:12,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:02:12,946 INFO L87 Difference]: Start difference. First operand 5495 states and 5635 transitions. Second operand 7 states. [2018-07-24 03:02:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:14,924 INFO L93 Difference]: Finished difference Result 10557 states and 10832 transitions. [2018-07-24 03:02:14,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 03:02:14,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1694 [2018-07-24 03:02:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:14,928 INFO L225 Difference]: With dead ends: 10557 [2018-07-24 03:02:14,928 INFO L226 Difference]: Without dead ends: 4731 [2018-07-24 03:02:14,931 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:02:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-07-24 03:02:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4731. [2018-07-24 03:02:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4731 states. [2018-07-24 03:02:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4731 states to 4731 states and 4838 transitions. [2018-07-24 03:02:14,968 INFO L78 Accepts]: Start accepts. Automaton has 4731 states and 4838 transitions. Word has length 1694 [2018-07-24 03:02:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:14,969 INFO L471 AbstractCegarLoop]: Abstraction has 4731 states and 4838 transitions. [2018-07-24 03:02:14,969 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:02:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4731 states and 4838 transitions. [2018-07-24 03:02:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2018-07-24 03:02:14,985 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:14,986 INFO L353 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:14,986 INFO L414 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:14,986 INFO L82 PathProgramCache]: Analyzing trace with hash -483860268, now seen corresponding path program 1 times [2018-07-24 03:02:14,986 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:14,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:14,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:14,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:14,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9748 backedges. 2912 proven. 983 refuted. 0 times theorem prover too weak. 5853 trivial. 0 not checked. [2018-07-24 03:02:17,652 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:02:17,652 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:02:17,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:18,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:02:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9748 backedges. 2912 proven. 0 refuted. 0 times theorem prover too weak. 6836 trivial. 0 not checked. [2018-07-24 03:02:19,823 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:02:19,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-07-24 03:02:19,825 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:02:19,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:02:19,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:02:19,826 INFO L87 Difference]: Start difference. First operand 4731 states and 4838 transitions. Second operand 5 states. [2018-07-24 03:02:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:20,859 INFO L93 Difference]: Finished difference Result 9247 states and 9462 transitions. [2018-07-24 03:02:20,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:02:20,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1730 [2018-07-24 03:02:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:20,864 INFO L225 Difference]: With dead ends: 9247 [2018-07-24 03:02:20,864 INFO L226 Difference]: Without dead ends: 4696 [2018-07-24 03:02:20,866 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1733 GetRequests, 1730 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:02:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2018-07-24 03:02:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4696. [2018-07-24 03:02:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4696 states. [2018-07-24 03:02:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 4793 transitions. [2018-07-24 03:02:20,904 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 4793 transitions. Word has length 1730 [2018-07-24 03:02:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:20,905 INFO L471 AbstractCegarLoop]: Abstraction has 4696 states and 4793 transitions. [2018-07-24 03:02:20,905 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:02:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 4793 transitions. [2018-07-24 03:02:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1749 [2018-07-24 03:02:20,921 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:20,921 INFO L353 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:20,922 INFO L414 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash -126785660, now seen corresponding path program 1 times [2018-07-24 03:02:20,922 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:20,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:20,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:20,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:20,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9888 backedges. 4874 proven. 393 refuted. 0 times theorem prover too weak. 4621 trivial. 0 not checked. [2018-07-24 03:02:23,024 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:02:23,024 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:02:23,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:23,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:02:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9888 backedges. 2867 proven. 179 refuted. 0 times theorem prover too weak. 6842 trivial. 0 not checked. [2018-07-24 03:02:25,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:02:25,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-07-24 03:02:25,454 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 03:02:25,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 03:02:25,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-07-24 03:02:25,454 INFO L87 Difference]: Start difference. First operand 4696 states and 4793 transitions. Second operand 10 states. [2018-07-24 03:02:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:33,193 INFO L93 Difference]: Finished difference Result 12159 states and 12455 transitions. [2018-07-24 03:02:33,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 03:02:33,193 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1748 [2018-07-24 03:02:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:33,199 INFO L225 Difference]: With dead ends: 12159 [2018-07-24 03:02:33,199 INFO L226 Difference]: Without dead ends: 6388 [2018-07-24 03:02:33,202 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1751 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-07-24 03:02:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2018-07-24 03:02:33,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 5132. [2018-07-24 03:02:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5132 states. [2018-07-24 03:02:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 5224 transitions. [2018-07-24 03:02:33,271 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 5224 transitions. Word has length 1748 [2018-07-24 03:02:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:33,272 INFO L471 AbstractCegarLoop]: Abstraction has 5132 states and 5224 transitions. [2018-07-24 03:02:33,273 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 03:02:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 5224 transitions. [2018-07-24 03:02:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1876 [2018-07-24 03:02:33,299 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:33,301 INFO L353 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:33,301 INFO L414 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:33,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1307631270, now seen corresponding path program 1 times [2018-07-24 03:02:33,301 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:33,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:33,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:33,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:33,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 11475 backedges. 6305 proven. 1392 refuted. 0 times theorem prover too weak. 3778 trivial. 0 not checked. [2018-07-24 03:02:37,723 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:02:37,724 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:02:37,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:38,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:02:38,573 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2018-07-24 03:02:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11475 backedges. 7697 proven. 0 refuted. 0 times theorem prover too weak. 3778 trivial. 0 not checked. [2018-07-24 03:02:41,728 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:02:41,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2018-07-24 03:02:41,732 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 03:02:41,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 03:02:41,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 03:02:41,732 INFO L87 Difference]: Start difference. First operand 5132 states and 5224 transitions. Second operand 10 states. [2018-07-24 03:02:45,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:45,408 INFO L93 Difference]: Finished difference Result 9582 states and 9762 transitions. [2018-07-24 03:02:45,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 03:02:45,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1875 [2018-07-24 03:02:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:45,415 INFO L225 Difference]: With dead ends: 9582 [2018-07-24 03:02:45,415 INFO L226 Difference]: Without dead ends: 5168 [2018-07-24 03:02:45,417 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1887 GetRequests, 1874 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2018-07-24 03:02:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2018-07-24 03:02:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 4595. [2018-07-24 03:02:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4595 states. [2018-07-24 03:02:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4595 states to 4595 states and 4663 transitions. [2018-07-24 03:02:45,466 INFO L78 Accepts]: Start accepts. Automaton has 4595 states and 4663 transitions. Word has length 1875 [2018-07-24 03:02:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:45,467 INFO L471 AbstractCegarLoop]: Abstraction has 4595 states and 4663 transitions. [2018-07-24 03:02:45,467 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 03:02:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4595 states and 4663 transitions. [2018-07-24 03:02:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1920 [2018-07-24 03:02:45,488 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:45,489 INFO L353 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:45,489 INFO L414 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:45,489 INFO L82 PathProgramCache]: Analyzing trace with hash -813060872, now seen corresponding path program 1 times [2018-07-24 03:02:45,489 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:45,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:45,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:45,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:45,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:48,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11629 backedges. 3245 proven. 0 refuted. 0 times theorem prover too weak. 8384 trivial. 0 not checked. [2018-07-24 03:02:48,689 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:48,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 03:02:48,690 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:02:48,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:02:48,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:02:48,690 INFO L87 Difference]: Start difference. First operand 4595 states and 4663 transitions. Second operand 7 states. [2018-07-24 03:02:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:50,016 INFO L93 Difference]: Finished difference Result 8210 states and 8337 transitions. [2018-07-24 03:02:50,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 03:02:50,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1919 [2018-07-24 03:02:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:50,019 INFO L225 Difference]: With dead ends: 8210 [2018-07-24 03:02:50,020 INFO L226 Difference]: Without dead ends: 4122 [2018-07-24 03:02:50,021 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:02:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2018-07-24 03:02:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4122. [2018-07-24 03:02:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4122 states. [2018-07-24 03:02:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4172 transitions. [2018-07-24 03:02:50,055 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4172 transitions. Word has length 1919 [2018-07-24 03:02:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:50,056 INFO L471 AbstractCegarLoop]: Abstraction has 4122 states and 4172 transitions. [2018-07-24 03:02:50,056 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:02:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4172 transitions. [2018-07-24 03:02:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2053 [2018-07-24 03:02:50,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:50,079 INFO L353 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 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, 2, 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 03:02:50,079 INFO L414 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:50,079 INFO L82 PathProgramCache]: Analyzing trace with hash -256691129, now seen corresponding path program 1 times [2018-07-24 03:02:50,079 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:50,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:50,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:50,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:50,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13345 backedges. 3459 proven. 120 refuted. 0 times theorem prover too weak. 9766 trivial. 0 not checked. [2018-07-24 03:02:52,855 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:02:52,855 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:02:52,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:53,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:02:53,689 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-07-24 03:02:57,452 WARN L169 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 183 DAG size of output: 27 [2018-07-24 03:02:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13345 backedges. 3483 proven. 96 refuted. 0 times theorem prover too weak. 9766 trivial. 0 not checked. [2018-07-24 03:02:59,704 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:02:59,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2018-07-24 03:02:59,706 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 03:02:59,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 03:02:59,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 03:02:59,708 INFO L87 Difference]: Start difference. First operand 4122 states and 4172 transitions. Second operand 9 states. [2018-07-24 03:03:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:03:07,803 INFO L93 Difference]: Finished difference Result 7896 states and 7999 transitions. [2018-07-24 03:03:07,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 03:03:07,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2052 [2018-07-24 03:03:07,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:03:07,805 INFO L225 Difference]: With dead ends: 7896 [2018-07-24 03:03:07,805 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 03:03:07,808 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2065 GetRequests, 2053 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-07-24 03:03:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 03:03:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 03:03:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 03:03:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 03:03:07,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2052 [2018-07-24 03:03:07,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:03:07,809 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 03:03:07,809 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 03:03:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 03:03:07,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 03:03:07,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 03:03:07,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:07,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:07,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:07,931 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,005 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,707 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,712 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,744 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,942 WARN L169 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 666 DAG size of output: 468 [2018-07-24 03:03:08,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,977 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:08,996 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,048 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,736 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,816 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,849 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,849 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:09,879 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:10,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 03:03:10,018 WARN L169 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 666 DAG size of output: 468 Received shutdown request... [2018-07-24 03:04:27,771 WARN L177 SmtUtils]: Removed 18 from assertion stack [2018-07-24 03:04:27,771 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 03:04:27,772 INFO L168 Benchmark]: Toolchain (without parser) took 235330.42 ms. Allocated memory was 1.6 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-07-24 03:04:27,774 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 03:04:27,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.80 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 03:04:27,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.64 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 03:04:27,775 INFO L168 Benchmark]: Boogie Preprocessor took 262.89 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 804.3 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -904.9 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2018-07-24 03:04:27,776 INFO L168 Benchmark]: RCFGBuilder took 3615.53 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 150.0 MB). Peak memory consumption was 150.0 MB. Max. memory is 7.1 GB. [2018-07-24 03:04:27,777 INFO L168 Benchmark]: TraceAbstraction took 230531.39 ms. Allocated memory was 2.4 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 03:04:27,785 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.80 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 141.64 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 262.89 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 804.3 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -904.9 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3615.53 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 150.0 MB). Peak memory consumption was 150.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230531.39 ms. Allocated memory was 2.4 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 151]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 428. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label53_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_03-04-27-800.csv Completed graceful shutdown