java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 12:57:47,287 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 12:57:47,289 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 12:57:47,302 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 12:57:47,302 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 12:57:47,303 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 12:57:47,304 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 12:57:47,312 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 12:57:47,314 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 12:57:47,315 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 12:57:47,319 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 12:57:47,320 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 12:57:47,321 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 12:57:47,321 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 12:57:47,323 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 12:57:47,326 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 12:57:47,326 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 12:57:47,328 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 12:57:47,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 12:57:47,343 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 12:57:47,344 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 12:57:47,345 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 12:57:47,347 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 12:57:47,362 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 12:57:47,389 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 12:57:47,390 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 12:57:47,390 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 12:57:47,391 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 12:57:47,391 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 12:57:47,391 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 12:57:47,392 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 12:57:47,392 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 12:57:47,392 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 12:57:47,392 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 12:57:47,392 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 12:57:47,392 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 12:57:47,393 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 12:57:47,393 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 12:57:47,394 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 12:57:47,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 12:57:47,394 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 12:57:47,394 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 12:57:47,394 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 12:57:47,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 12:57:47,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 12:57:47,395 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 12:57:47,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 12:57:47,395 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 12:57:47,395 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 12:57:47,396 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 12:57:47,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 12:57:47,396 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 12:57:47,396 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 12:57:47,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 12:57:47,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 12:57:47,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 12:57:47,473 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 12:57:47,473 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 12:57:47,474 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-07-22 12:57:47,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c6602a712/f00bd05e27464ba7b872c3de9600582f/FLAG28a0b6f33 [2018-07-22 12:57:48,115 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 12:57:48,116 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-07-22 12:57:48,264 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c6602a712/f00bd05e27464ba7b872c3de9600582f/FLAG28a0b6f33 [2018-07-22 12:57:48,278 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c6602a712/f00bd05e27464ba7b872c3de9600582f [2018-07-22 12:57:48,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 12:57:48,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 12:57:48,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 12:57:48,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 12:57:48,304 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 12:57:48,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:57:48" (1/1) ... [2018-07-22 12:57:48,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a36b875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:48, skipping insertion in model container [2018-07-22 12:57:48,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:57:48" (1/1) ... [2018-07-22 12:57:48,536 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 12:57:48,844 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 12:57:48,860 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 12:57:49,058 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 12:57:49,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49 WrapperNode [2018-07-22 12:57:49,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 12:57:49,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 12:57:49,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 12:57:49,149 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 12:57:49,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 12:57:49,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 12:57:49,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 12:57:49,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 12:57:49,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... [2018-07-22 12:57:49,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 12:57:49,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 12:57:49,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 12:57:49,491 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 12:57:49,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 12:57:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 12:57:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 12:57:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 12:57:53,523 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 12:57:53,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:57:53 BoogieIcfgContainer [2018-07-22 12:57:53,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 12:57:53,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 12:57:53,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 12:57:53,529 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 12:57:53,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:57:48" (1/3) ... [2018-07-22 12:57:53,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642c5f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:57:53, skipping insertion in model container [2018-07-22 12:57:53,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:57:49" (2/3) ... [2018-07-22 12:57:53,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642c5f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:57:53, skipping insertion in model container [2018-07-22 12:57:53,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:57:53" (3/3) ... [2018-07-22 12:57:53,533 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label09_true-unreach-call_false-termination.c [2018-07-22 12:57:53,540 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 12:57:53,548 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 12:57:53,600 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 12:57:53,601 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 12:57:53,601 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 12:57:53,602 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 12:57:53,602 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 12:57:53,602 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 12:57:53,602 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 12:57:53,602 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 12:57:53,602 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 12:57:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2018-07-22 12:57:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-22 12:57:53,642 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:57:53,643 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:57:53,643 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:57:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-07-22 12:57:53,649 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:57:53,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:57:53,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:57:53,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:57:53,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:57:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:57:54,135 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-22 12:57:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:57:54,221 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:57:54,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:57:54,227 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:57:54,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:57:54,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:57:54,245 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 4 states. [2018-07-22 12:57:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:57:57,014 INFO L93 Difference]: Finished difference Result 854 states and 1562 transitions. [2018-07-22 12:57:57,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:57:57,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-07-22 12:57:57,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:57:57,041 INFO L225 Difference]: With dead ends: 854 [2018-07-22 12:57:57,041 INFO L226 Difference]: Without dead ends: 601 [2018-07-22 12:57:57,046 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:57:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2018-07-22 12:57:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2018-07-22 12:57:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2018-07-22 12:57:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 997 transitions. [2018-07-22 12:57:57,129 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 997 transitions. Word has length 46 [2018-07-22 12:57:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:57:57,131 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 997 transitions. [2018-07-22 12:57:57,131 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:57:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 997 transitions. [2018-07-22 12:57:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-22 12:57:57,136 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:57:57,136 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 12:57:57,137 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:57:57,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1864334010, now seen corresponding path program 1 times [2018-07-22 12:57:57,138 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:57:57,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:57:57,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:57:57,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:57:57,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:57:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:57:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:57:57,400 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:57:57,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:57:57,402 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:57:57,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:57:57,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:57:57,403 INFO L87 Difference]: Start difference. First operand 601 states and 997 transitions. Second operand 4 states. [2018-07-22 12:57:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:57:59,985 INFO L93 Difference]: Finished difference Result 2274 states and 3860 transitions. [2018-07-22 12:57:59,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:57:59,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-07-22 12:58:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:00,029 INFO L225 Difference]: With dead ends: 2274 [2018-07-22 12:58:00,029 INFO L226 Difference]: Without dead ends: 1675 [2018-07-22 12:58:00,037 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:58:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2018-07-22 12:58:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1675. [2018-07-22 12:58:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2018-07-22 12:58:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2493 transitions. [2018-07-22 12:58:00,130 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2493 transitions. Word has length 113 [2018-07-22 12:58:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:00,131 INFO L471 AbstractCegarLoop]: Abstraction has 1675 states and 2493 transitions. [2018-07-22 12:58:00,132 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:58:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2493 transitions. [2018-07-22 12:58:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-22 12:58:00,135 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:00,136 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 12:58:00,139 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:00,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1930735349, now seen corresponding path program 1 times [2018-07-22 12:58:00,140 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:00,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:00,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:00,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:00,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:58:00,500 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:58:00,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:58:00,501 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:58:00,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:58:00,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:58:00,502 INFO L87 Difference]: Start difference. First operand 1675 states and 2493 transitions. Second operand 4 states. [2018-07-22 12:58:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:02,180 INFO L93 Difference]: Finished difference Result 5512 states and 8130 transitions. [2018-07-22 12:58:02,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:58:02,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2018-07-22 12:58:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:02,231 INFO L225 Difference]: With dead ends: 5512 [2018-07-22 12:58:02,231 INFO L226 Difference]: Without dead ends: 3839 [2018-07-22 12:58:02,234 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:58:02,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2018-07-22 12:58:02,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3839. [2018-07-22 12:58:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2018-07-22 12:58:02,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5093 transitions. [2018-07-22 12:58:02,362 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5093 transitions. Word has length 115 [2018-07-22 12:58:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:02,362 INFO L471 AbstractCegarLoop]: Abstraction has 3839 states and 5093 transitions. [2018-07-22 12:58:02,363 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:58:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5093 transitions. [2018-07-22 12:58:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-22 12:58:02,380 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:02,380 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-22 12:58:02,381 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash -206147984, now seen corresponding path program 1 times [2018-07-22 12:58:02,381 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:02,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:02,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:02,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:02,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 247 proven. 5 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-22 12:58:03,020 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:58:03,020 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 12:58:03,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:03,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:58:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-22 12:58:03,389 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:58:03,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-22 12:58:03,391 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 12:58:03,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 12:58:03,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 12:58:03,391 INFO L87 Difference]: Start difference. First operand 3839 states and 5093 transitions. Second operand 6 states. [2018-07-22 12:58:04,379 WARN L169 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-07-22 12:58:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:09,695 INFO L93 Difference]: Finished difference Result 10198 states and 13338 transitions. [2018-07-22 12:58:09,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 12:58:09,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2018-07-22 12:58:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:09,719 INFO L225 Difference]: With dead ends: 10198 [2018-07-22 12:58:09,719 INFO L226 Difference]: Without dead ends: 6000 [2018-07-22 12:58:09,725 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-07-22 12:58:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6000 states. [2018-07-22 12:58:09,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6000 to 4001. [2018-07-22 12:58:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2018-07-22 12:58:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 4705 transitions. [2018-07-22 12:58:09,858 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 4705 transitions. Word has length 306 [2018-07-22 12:58:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:09,860 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 4705 transitions. [2018-07-22 12:58:09,860 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 12:58:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 4705 transitions. [2018-07-22 12:58:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-22 12:58:09,866 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:09,867 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 12:58:09,867 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:09,867 INFO L82 PathProgramCache]: Analyzing trace with hash 2076395288, now seen corresponding path program 1 times [2018-07-22 12:58:09,868 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:09,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:09,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:09,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:09,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:10,676 WARN L169 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-22 12:58:11,111 WARN L169 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2018-07-22 12:58:11,439 WARN L169 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2018-07-22 12:58:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 286 proven. 46 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-22 12:58:11,701 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:58:11,701 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 12:58:11,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:11,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:58:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 309 proven. 23 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-22 12:58:12,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 12:58:12,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-07-22 12:58:12,342 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 12:58:12,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 12:58:12,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-22 12:58:12,343 INFO L87 Difference]: Start difference. First operand 4001 states and 4705 transitions. Second operand 9 states. [2018-07-22 12:58:16,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:16,937 INFO L93 Difference]: Finished difference Result 8072 states and 9482 transitions. [2018-07-22 12:58:16,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-22 12:58:16,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 353 [2018-07-22 12:58:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:16,950 INFO L225 Difference]: With dead ends: 8072 [2018-07-22 12:58:16,950 INFO L226 Difference]: Without dead ends: 4252 [2018-07-22 12:58:16,955 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-07-22 12:58:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2018-07-22 12:58:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 4001. [2018-07-22 12:58:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2018-07-22 12:58:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 4702 transitions. [2018-07-22 12:58:17,038 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 4702 transitions. Word has length 353 [2018-07-22 12:58:17,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:17,039 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 4702 transitions. [2018-07-22 12:58:17,039 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 12:58:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 4702 transitions. [2018-07-22 12:58:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2018-07-22 12:58:17,054 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:17,054 INFO L358 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:58:17,054 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:17,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1801973352, now seen corresponding path program 1 times [2018-07-22 12:58:17,055 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:17,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:17,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:17,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:17,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:17,759 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-22 12:58:17,976 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-22 12:58:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 651 proven. 330 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-07-22 12:58:18,532 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:58:18,532 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 12:58:18,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:18,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:58:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 687 proven. 93 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-07-22 12:58:19,377 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 12:58:19,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 9 [2018-07-22 12:58:19,379 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-22 12:58:19,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-22 12:58:19,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-22 12:58:19,379 INFO L87 Difference]: Start difference. First operand 4001 states and 4702 transitions. Second operand 10 states. [2018-07-22 12:58:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:21,211 INFO L93 Difference]: Finished difference Result 8060 states and 9471 transitions. [2018-07-22 12:58:21,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-22 12:58:21,211 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 573 [2018-07-22 12:58:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:21,224 INFO L225 Difference]: With dead ends: 8060 [2018-07-22 12:58:21,224 INFO L226 Difference]: Without dead ends: 4240 [2018-07-22 12:58:21,228 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-07-22 12:58:21,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2018-07-22 12:58:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 4180. [2018-07-22 12:58:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4180 states. [2018-07-22 12:58:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 4883 transitions. [2018-07-22 12:58:21,319 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 4883 transitions. Word has length 573 [2018-07-22 12:58:21,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:21,321 INFO L471 AbstractCegarLoop]: Abstraction has 4180 states and 4883 transitions. [2018-07-22 12:58:21,321 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-22 12:58:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 4883 transitions. [2018-07-22 12:58:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-07-22 12:58:21,343 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:21,344 INFO L358 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, 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, 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] [2018-07-22 12:58:21,344 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:21,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1307977671, now seen corresponding path program 1 times [2018-07-22 12:58:21,345 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:21,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:21,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:21,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:21,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:21,970 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-07-22 12:58:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2018-07-22 12:58:22,099 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:58:22,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:58:22,100 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:58:22,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:58:22,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:58:22,100 INFO L87 Difference]: Start difference. First operand 4180 states and 4883 transitions. Second operand 4 states. [2018-07-22 12:58:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:23,034 INFO L93 Difference]: Finished difference Result 10148 states and 12102 transitions. [2018-07-22 12:58:23,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:58:23,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 599 [2018-07-22 12:58:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:23,054 INFO L225 Difference]: With dead ends: 10148 [2018-07-22 12:58:23,054 INFO L226 Difference]: Without dead ends: 6149 [2018-07-22 12:58:23,058 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:58:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2018-07-22 12:58:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 6149. [2018-07-22 12:58:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6149 states. [2018-07-22 12:58:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 7114 transitions. [2018-07-22 12:58:23,169 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 7114 transitions. Word has length 599 [2018-07-22 12:58:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:23,171 INFO L471 AbstractCegarLoop]: Abstraction has 6149 states and 7114 transitions. [2018-07-22 12:58:23,171 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:58:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 7114 transitions. [2018-07-22 12:58:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-07-22 12:58:23,195 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:23,195 INFO L358 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2018-07-22 12:58:23,196 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:23,196 INFO L82 PathProgramCache]: Analyzing trace with hash -499464005, now seen corresponding path program 1 times [2018-07-22 12:58:23,196 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:23,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:23,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:23,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:23,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 868 proven. 111 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-07-22 12:58:23,826 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:58:23,827 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 12:58:23,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:24,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:58:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 868 proven. 111 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-07-22 12:58:24,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 12:58:24,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-07-22 12:58:24,333 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:58:24,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:58:24,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:58:24,333 INFO L87 Difference]: Start difference. First operand 6149 states and 7114 transitions. Second operand 5 states. [2018-07-22 12:58:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:25,556 INFO L93 Difference]: Finished difference Result 14460 states and 16996 transitions. [2018-07-22 12:58:25,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:58:25,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 640 [2018-07-22 12:58:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:25,585 INFO L225 Difference]: With dead ends: 14460 [2018-07-22 12:58:25,585 INFO L226 Difference]: Without dead ends: 8492 [2018-07-22 12:58:25,601 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:58:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2018-07-22 12:58:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 7581. [2018-07-22 12:58:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7581 states. [2018-07-22 12:58:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7581 states to 7581 states and 8789 transitions. [2018-07-22 12:58:25,737 INFO L78 Accepts]: Start accepts. Automaton has 7581 states and 8789 transitions. Word has length 640 [2018-07-22 12:58:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:25,739 INFO L471 AbstractCegarLoop]: Abstraction has 7581 states and 8789 transitions. [2018-07-22 12:58:25,739 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:58:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 7581 states and 8789 transitions. [2018-07-22 12:58:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2018-07-22 12:58:25,750 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:25,750 INFO L358 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, 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, 4, 4, 4, 4, 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, 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] [2018-07-22 12:58:25,750 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:25,751 INFO L82 PathProgramCache]: Analyzing trace with hash -772093792, now seen corresponding path program 1 times [2018-07-22 12:58:25,751 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:25,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:25,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:25,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:25,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:26,404 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-22 12:58:26,725 WARN L169 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-07-22 12:58:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 1205 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-07-22 12:58:27,211 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:58:27,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 12:58:27,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:58:27,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:58:27,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:58:27,212 INFO L87 Difference]: Start difference. First operand 7581 states and 8789 transitions. Second operand 5 states. [2018-07-22 12:58:29,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:29,049 INFO L93 Difference]: Finished difference Result 14981 states and 17396 transitions. [2018-07-22 12:58:29,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:58:29,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 651 [2018-07-22 12:58:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:29,063 INFO L225 Difference]: With dead ends: 14981 [2018-07-22 12:58:29,064 INFO L226 Difference]: Without dead ends: 7581 [2018-07-22 12:58:29,071 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:58:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2018-07-22 12:58:29,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 7581. [2018-07-22 12:58:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7581 states. [2018-07-22 12:58:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7581 states to 7581 states and 8649 transitions. [2018-07-22 12:58:29,180 INFO L78 Accepts]: Start accepts. Automaton has 7581 states and 8649 transitions. Word has length 651 [2018-07-22 12:58:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:29,181 INFO L471 AbstractCegarLoop]: Abstraction has 7581 states and 8649 transitions. [2018-07-22 12:58:29,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:58:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7581 states and 8649 transitions. [2018-07-22 12:58:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2018-07-22 12:58:29,190 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:29,191 INFO L358 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, 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, 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] [2018-07-22 12:58:29,191 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1521446553, now seen corresponding path program 1 times [2018-07-22 12:58:29,192 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:29,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:29,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:29,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:29,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 690 proven. 345 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-07-22 12:58:30,814 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:58:30,814 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 12:58:30,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:30,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:58:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-07-22 12:58:31,943 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:58:31,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2018-07-22 12:58:31,944 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-22 12:58:31,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-22 12:58:31,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-07-22 12:58:31,945 INFO L87 Difference]: Start difference. First operand 7581 states and 8649 transitions. Second operand 13 states. [2018-07-22 12:58:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:36,148 INFO L93 Difference]: Finished difference Result 17312 states and 19758 transitions. [2018-07-22 12:58:36,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-22 12:58:36,166 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 769 [2018-07-22 12:58:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:36,182 INFO L225 Difference]: With dead ends: 17312 [2018-07-22 12:58:36,182 INFO L226 Difference]: Without dead ends: 7031 [2018-07-22 12:58:36,191 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 768 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-07-22 12:58:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7031 states. [2018-07-22 12:58:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7031 to 7027. [2018-07-22 12:58:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7027 states. [2018-07-22 12:58:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 7684 transitions. [2018-07-22 12:58:36,283 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 7684 transitions. Word has length 769 [2018-07-22 12:58:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:36,285 INFO L471 AbstractCegarLoop]: Abstraction has 7027 states and 7684 transitions. [2018-07-22 12:58:36,285 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-22 12:58:36,285 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 7684 transitions. [2018-07-22 12:58:36,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2018-07-22 12:58:36,293 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:36,293 INFO L358 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, 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, 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, 3, 3, 3, 3, 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] [2018-07-22 12:58:36,293 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:36,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1043164057, now seen corresponding path program 1 times [2018-07-22 12:58:36,294 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:36,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:36,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:36,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:36,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 892 proven. 0 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2018-07-22 12:58:36,990 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:58:36,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 12:58:36,991 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:58:36,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:58:36,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:58:36,991 INFO L87 Difference]: Start difference. First operand 7027 states and 7684 transitions. Second operand 5 states. [2018-07-22 12:58:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:38,024 INFO L93 Difference]: Finished difference Result 15132 states and 16514 transitions. [2018-07-22 12:58:38,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:58:38,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 809 [2018-07-22 12:58:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:38,036 INFO L225 Difference]: With dead ends: 15132 [2018-07-22 12:58:38,036 INFO L226 Difference]: Without dead ends: 8107 [2018-07-22 12:58:38,044 INFO L578 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 [2018-07-22 12:58:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8107 states. [2018-07-22 12:58:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8107 to 7206. [2018-07-22 12:58:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7206 states. [2018-07-22 12:58:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7206 states to 7206 states and 7865 transitions. [2018-07-22 12:58:38,251 INFO L78 Accepts]: Start accepts. Automaton has 7206 states and 7865 transitions. Word has length 809 [2018-07-22 12:58:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:38,252 INFO L471 AbstractCegarLoop]: Abstraction has 7206 states and 7865 transitions. [2018-07-22 12:58:38,252 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:58:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 7206 states and 7865 transitions. [2018-07-22 12:58:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2018-07-22 12:58:38,261 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:38,262 INFO L358 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:58:38,262 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:38,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1194644164, now seen corresponding path program 1 times [2018-07-22 12:58:38,262 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:38,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:38,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:38,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:38,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:39,066 WARN L169 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-07-22 12:58:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 1245 proven. 0 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2018-07-22 12:58:39,299 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:58:39,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:58:39,300 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:58:39,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:58:39,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:58:39,300 INFO L87 Difference]: Start difference. First operand 7206 states and 7865 transitions. Second operand 4 states. [2018-07-22 12:58:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:58:40,203 INFO L93 Difference]: Finished difference Result 14231 states and 15548 transitions. [2018-07-22 12:58:40,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:58:40,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 854 [2018-07-22 12:58:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:58:40,214 INFO L225 Difference]: With dead ends: 14231 [2018-07-22 12:58:40,214 INFO L226 Difference]: Without dead ends: 7206 [2018-07-22 12:58:40,221 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:58:40,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2018-07-22 12:58:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 7206. [2018-07-22 12:58:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7206 states. [2018-07-22 12:58:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7206 states to 7206 states and 7772 transitions. [2018-07-22 12:58:40,326 INFO L78 Accepts]: Start accepts. Automaton has 7206 states and 7772 transitions. Word has length 854 [2018-07-22 12:58:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:58:40,327 INFO L471 AbstractCegarLoop]: Abstraction has 7206 states and 7772 transitions. [2018-07-22 12:58:40,327 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:58:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7206 states and 7772 transitions. [2018-07-22 12:58:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-07-22 12:58:40,336 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:58:40,336 INFO L358 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 12:58:40,336 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:58:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -267445699, now seen corresponding path program 1 times [2018-07-22 12:58:40,337 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:58:40,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:58:40,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:40,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:40,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:58:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:41,081 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-22 12:58:41,317 WARN L169 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-07-22 12:58:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 858 proven. 773 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2018-07-22 12:58:42,688 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:58:42,689 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 12:58:42,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:58:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:58:42,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:58:43,373 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-07-22 12:58:44,486 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 27 [2018-07-22 12:58:53,403 WARN L169 SmtUtils]: Spent 8.57 s on a formula simplification. DAG size of input: 246 DAG size of output: 66 [2018-07-22 12:58:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 634 proven. 733 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-07-22 12:58:55,631 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 12:58:55,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2018-07-22 12:58:55,632 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-22 12:58:55,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-22 12:58:55,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-07-22 12:58:55,633 INFO L87 Difference]: Start difference. First operand 7206 states and 7772 transitions. Second operand 15 states. [2018-07-22 12:59:07,159 WARN L169 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-07-22 12:59:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:59:27,251 INFO L93 Difference]: Finished difference Result 15520 states and 16722 transitions. [2018-07-22 12:59:27,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-22 12:59:27,252 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 928 [2018-07-22 12:59:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:59:27,260 INFO L225 Difference]: With dead ends: 15520 [2018-07-22 12:59:27,261 INFO L226 Difference]: Without dead ends: 8137 [2018-07-22 12:59:27,270 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 924 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2018-07-22 12:59:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8137 states. [2018-07-22 12:59:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8137 to 7385. [2018-07-22 12:59:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7385 states. [2018-07-22 12:59:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7385 states to 7385 states and 7960 transitions. [2018-07-22 12:59:27,374 INFO L78 Accepts]: Start accepts. Automaton has 7385 states and 7960 transitions. Word has length 928 [2018-07-22 12:59:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:59:27,375 INFO L471 AbstractCegarLoop]: Abstraction has 7385 states and 7960 transitions. [2018-07-22 12:59:27,375 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-22 12:59:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7385 states and 7960 transitions. [2018-07-22 12:59:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2018-07-22 12:59:27,386 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:59:27,387 INFO L358 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-22 12:59:27,387 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:59:27,387 INFO L82 PathProgramCache]: Analyzing trace with hash 950184563, now seen corresponding path program 1 times [2018-07-22 12:59:27,387 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:59:27,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:59:27,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:59:27,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:59:27,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:59:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:59:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3322 backedges. 199 proven. 1861 refuted. 0 times theorem prover too weak. 1262 trivial. 0 not checked. [2018-07-22 12:59:29,969 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:59:29,969 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 12:59:29,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:59:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:59:30,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:59:41,109 WARN L169 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 188 DAG size of output: 50 [2018-07-22 12:59:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3322 backedges. 489 proven. 351 refuted. 0 times theorem prover too weak. 2482 trivial. 0 not checked. [2018-07-22 12:59:42,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 12:59:42,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 15 [2018-07-22 12:59:42,565 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-22 12:59:42,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-22 12:59:42,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=188, Unknown=1, NotChecked=0, Total=240 [2018-07-22 12:59:42,565 INFO L87 Difference]: Start difference. First operand 7385 states and 7960 transitions. Second operand 16 states. [2018-07-22 13:00:14,602 WARN L169 SmtUtils]: Spent 13.91 s on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-07-22 13:01:06,320 WARN L169 SmtUtils]: Spent 5.51 s on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2018-07-22 13:01:37,030 WARN L169 SmtUtils]: Spent 11.08 s on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-07-22 13:01:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 13:01:56,014 INFO L93 Difference]: Finished difference Result 17829 states and 19435 transitions. [2018-07-22 13:01:56,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-22 13:01:56,015 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1058 [2018-07-22 13:01:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 13:01:56,022 INFO L225 Difference]: With dead ends: 17829 [2018-07-22 13:01:56,022 INFO L226 Difference]: Without dead ends: 10446 [2018-07-22 13:01:56,027 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1056 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 52.5s TimeCoverageRelationStatistics Valid=276, Invalid=774, Unknown=6, NotChecked=0, Total=1056 [2018-07-22 13:01:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10446 states. [2018-07-22 13:01:56,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10446 to 8825. [2018-07-22 13:01:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8825 states. [2018-07-22 13:01:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8825 states to 8825 states and 9485 transitions. [2018-07-22 13:01:56,111 INFO L78 Accepts]: Start accepts. Automaton has 8825 states and 9485 transitions. Word has length 1058 [2018-07-22 13:01:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 13:01:56,112 INFO L471 AbstractCegarLoop]: Abstraction has 8825 states and 9485 transitions. [2018-07-22 13:01:56,112 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-22 13:01:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8825 states and 9485 transitions. [2018-07-22 13:01:56,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1611 [2018-07-22 13:01:56,133 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 13:01:56,134 INFO L358 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, 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, 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, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 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, 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] [2018-07-22 13:01:56,134 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 13:01:56,134 INFO L82 PathProgramCache]: Analyzing trace with hash -629366820, now seen corresponding path program 1 times [2018-07-22 13:01:56,135 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 13:01:56,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 13:01:56,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:01:56,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:01:56,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:01:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-22 13:01:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 8264 backedges. 544 proven. 2027 refuted. 0 times theorem prover too weak. 5693 trivial. 0 not checked. [2018-07-22 13:01:58,522 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 13:01:58,522 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 13:01:58,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:01:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 13:01:58,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 13:01:58,974 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-22 13:01:59,175 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 13:01:59,175 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 13:01:59,182 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 13:01:59,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 01:01:59 BoogieIcfgContainer [2018-07-22 13:01:59,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 13:01:59,185 INFO L168 Benchmark]: Toolchain (without parser) took 250896.52 ms. Allocated memory was 309.9 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 251.6 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 696.9 MB. Max. memory is 5.3 GB. [2018-07-22 13:01:59,186 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 13:01:59,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 852.79 ms. Allocated memory is still 309.9 MB. Free memory was 250.6 MB in the beginning and 207.5 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 5.3 GB. [2018-07-22 13:01:59,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.96 ms. Allocated memory is still 309.9 MB. Free memory was 207.5 MB in the beginning and 197.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-07-22 13:01:59,187 INFO L168 Benchmark]: Boogie Preprocessor took 177.22 ms. Allocated memory was 309.9 MB in the beginning and 342.4 MB in the end (delta: 32.5 MB). Free memory was 197.6 MB in the beginning and 298.3 MB in the end (delta: -100.8 MB). Peak memory consumption was 29.7 MB. Max. memory is 5.3 GB. [2018-07-22 13:01:59,188 INFO L168 Benchmark]: RCFGBuilder took 4033.30 ms. Allocated memory was 342.4 MB in the beginning and 444.1 MB in the end (delta: 101.7 MB). Free memory was 298.3 MB in the beginning and 276.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 140.7 MB. Max. memory is 5.3 GB. [2018-07-22 13:01:59,188 INFO L168 Benchmark]: TraceAbstraction took 245657.40 ms. Allocated memory was 444.1 MB in the beginning and 2.2 GB in the end (delta: 1.7 GB). Free memory was 276.0 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 587.0 MB. Max. memory is 5.3 GB. [2018-07-22 13:01:59,199 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 852.79 ms. Allocated memory is still 309.9 MB. Free memory was 250.6 MB in the beginning and 207.5 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 163.96 ms. Allocated memory is still 309.9 MB. Free memory was 207.5 MB in the beginning and 197.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 177.22 ms. Allocated memory was 309.9 MB in the beginning and 342.4 MB in the end (delta: 32.5 MB). Free memory was 197.6 MB in the beginning and 298.3 MB in the end (delta: -100.8 MB). Peak memory consumption was 29.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 4033.30 ms. Allocated memory was 342.4 MB in the beginning and 444.1 MB in the end (delta: 101.7 MB). Free memory was 298.3 MB in the beginning and 276.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 140.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 245657.40 ms. Allocated memory was 444.1 MB in the beginning and 2.2 GB in the end (delta: 1.7 GB). Free memory was 276.0 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 587.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 139). Cancelled while BasicCegarLoop was analyzing trace of length 1611 with TraceHistMax 14, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 246 locations, 1 error locations. TIMEOUT Result, 245.5s OverallTime, 15 OverallIterations, 14 TraceHistogramMax, 195.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2108 SDtfs, 18534 SDslu, 2608 SDs, 0 SdLazy, 31188 SolverSat, 4544 SolverUnsat, 47 SolverUnknown, 0 SolverNotchecked, 137.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4758 GetRequests, 4629 SyntacticMatches, 14 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 77.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8825occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 6499 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 37.0s InterpolantComputationTime, 12441 NumberOfCodeBlocks, 12441 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 12420 ConstructedInterpolants, 228 QuantifiedInterpolants, 61735120 SizeOfPredicates, 17 NumberOfNonLiveVariables, 5721 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 23892/28674 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem14_label09_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_13-01-59-227.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem14_label09_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_13-01-59-227.csv Completed graceful shutdown