java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 14:56:22,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 14:56:22,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 14:56:22,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 14:56:22,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 14:56:22,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 14:56:22,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 14:56:22,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 14:56:22,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 14:56:22,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 14:56:22,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 14:56:22,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 14:56:22,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 14:56:22,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 14:56:22,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 14:56:22,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 14:56:22,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 14:56:22,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 14:56:22,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 14:56:22,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 14:56:22,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 14:56:22,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 14:56:22,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 14:56:22,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 14:56:22,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 14:56:22,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 14:56:22,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 14:56:22,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 14:56:22,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 14:56:22,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 14:56:22,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 14:56:22,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 14:56:22,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 14:56:22,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 14:56:22,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 14:56:22,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 14:56:22,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 14:56:22,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 14:56:22,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 14:56:22,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 14:56:22,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 14:56:22,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 14:56:22,356 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 14:56:22,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 14:56:22,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 14:56:22,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 14:56:22,360 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 14:56:22,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 14:56:22,360 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 14:56:22,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 14:56:22,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 14:56:22,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 14:56:22,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 14:56:22,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 14:56:22,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 14:56:22,363 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 14:56:22,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 14:56:22,363 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 14:56:22,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 14:56:22,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 14:56:22,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 14:56:22,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 14:56:22,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 14:56:22,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 14:56:22,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 14:56:22,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 14:56:22,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 14:56:22,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 14:56:22,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 14:56:22,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 14:56:22,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 14:56:22,400 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 14:56:22,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 14:56:22,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 14:56:22,418 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 14:56:22,418 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 14:56:22,419 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-10-02 14:56:22,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b581bf22/1f423942935f4c2681eb1e46ab3054c4/FLAGa40591f74 [2019-10-02 14:56:23,009 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 14:56:23,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-10-02 14:56:23,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b581bf22/1f423942935f4c2681eb1e46ab3054c4/FLAGa40591f74 [2019-10-02 14:56:23,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b581bf22/1f423942935f4c2681eb1e46ab3054c4 [2019-10-02 14:56:23,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 14:56:23,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 14:56:23,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 14:56:23,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 14:56:23,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 14:56:23,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13666249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23, skipping insertion in model container [2019-10-02 14:56:23,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,371 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 14:56:23,409 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 14:56:23,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 14:56:23,769 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 14:56:23,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 14:56:23,837 INFO L192 MainTranslator]: Completed translation [2019-10-02 14:56:23,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23 WrapperNode [2019-10-02 14:56:23,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 14:56:23,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 14:56:23,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 14:56:23,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 14:56:23,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (1/1) ... [2019-10-02 14:56:23,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 14:56:23,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 14:56:23,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 14:56:23,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 14:56:23,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 14:56:23,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 14:56:23,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 14:56:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 14:56:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 14:56:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-02 14:56:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-02 14:56:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-02 14:56:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-02 14:56:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 14:56:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-02 14:56:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-02 14:56:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-02 14:56:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-02 14:56:23,953 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-02 14:56:23,953 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-02 14:56:23,953 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-02 14:56:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 14:56:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 14:56:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 14:56:24,560 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 14:56:24,560 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-02 14:56:24,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 02:56:24 BoogieIcfgContainer [2019-10-02 14:56:24,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 14:56:24,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 14:56:24,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 14:56:24,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 14:56:24,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 02:56:23" (1/3) ... [2019-10-02 14:56:24,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499b68fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 02:56:24, skipping insertion in model container [2019-10-02 14:56:24,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 02:56:23" (2/3) ... [2019-10-02 14:56:24,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499b68fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 02:56:24, skipping insertion in model container [2019-10-02 14:56:24,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 02:56:24" (3/3) ... [2019-10-02 14:56:24,570 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-10-02 14:56:24,580 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 14:56:24,588 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 14:56:24,605 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 14:56:24,636 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 14:56:24,637 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 14:56:24,637 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 14:56:24,638 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 14:56:24,638 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 14:56:24,638 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 14:56:24,638 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 14:56:24,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 14:56:24,639 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 14:56:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-10-02 14:56:24,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-02 14:56:24,668 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:24,669 INFO L411 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] [2019-10-02 14:56:24,671 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:24,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1555775493, now seen corresponding path program 1 times [2019-10-02 14:56:24,678 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:24,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:24,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:24,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:24,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:25,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:25,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:56:25,062 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:56:25,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:56:25,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:25,077 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2019-10-02 14:56:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:25,165 INFO L93 Difference]: Finished difference Result 197 states and 307 transitions. [2019-10-02 14:56:25,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:56:25,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-10-02 14:56:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:25,180 INFO L225 Difference]: With dead ends: 197 [2019-10-02 14:56:25,180 INFO L226 Difference]: Without dead ends: 126 [2019-10-02 14:56:25,184 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-02 14:56:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2019-10-02 14:56:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-02 14:56:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2019-10-02 14:56:25,242 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 41 [2019-10-02 14:56:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:25,243 INFO L475 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2019-10-02 14:56:25,243 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:56:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2019-10-02 14:56:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-02 14:56:25,246 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:25,246 INFO L411 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] [2019-10-02 14:56:25,246 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:25,247 INFO L82 PathProgramCache]: Analyzing trace with hash 477079428, now seen corresponding path program 1 times [2019-10-02 14:56:25,247 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:25,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:25,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:25,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:25,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:25,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:25,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:56:25,379 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:56:25,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:56:25,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:25,380 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand 3 states. [2019-10-02 14:56:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:25,438 INFO L93 Difference]: Finished difference Result 292 states and 446 transitions. [2019-10-02 14:56:25,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:56:25,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-10-02 14:56:25,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:25,442 INFO L225 Difference]: With dead ends: 292 [2019-10-02 14:56:25,442 INFO L226 Difference]: Without dead ends: 192 [2019-10-02 14:56:25,444 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:25,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2019-10-02 14:56:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2019-10-02 14:56:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-10-02 14:56:25,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 285 transitions. [2019-10-02 14:56:25,472 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 285 transitions. Word has length 42 [2019-10-02 14:56:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:25,473 INFO L475 AbstractCegarLoop]: Abstraction has 190 states and 285 transitions. [2019-10-02 14:56:25,473 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:56:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 285 transitions. [2019-10-02 14:56:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-02 14:56:25,475 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:25,475 INFO L411 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] [2019-10-02 14:56:25,476 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:25,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1738555772, now seen corresponding path program 1 times [2019-10-02 14:56:25,476 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:25,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:25,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:25,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:25,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:25,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:25,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 14:56:25,632 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 14:56:25,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 14:56:25,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 14:56:25,633 INFO L87 Difference]: Start difference. First operand 190 states and 285 transitions. Second operand 5 states. [2019-10-02 14:56:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:25,799 INFO L93 Difference]: Finished difference Result 854 states and 1329 transitions. [2019-10-02 14:56:25,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 14:56:25,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-02 14:56:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:25,806 INFO L225 Difference]: With dead ends: 854 [2019-10-02 14:56:25,806 INFO L226 Difference]: Without dead ends: 688 [2019-10-02 14:56:25,808 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-02 14:56:25,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-10-02 14:56:25,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 354. [2019-10-02 14:56:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-10-02 14:56:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 537 transitions. [2019-10-02 14:56:25,876 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 537 transitions. Word has length 43 [2019-10-02 14:56:25,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:25,877 INFO L475 AbstractCegarLoop]: Abstraction has 354 states and 537 transitions. [2019-10-02 14:56:25,877 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 14:56:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 537 transitions. [2019-10-02 14:56:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-02 14:56:25,883 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:25,883 INFO L411 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] [2019-10-02 14:56:25,883 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:25,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1920813121, now seen corresponding path program 1 times [2019-10-02 14:56:25,884 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:25,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:25,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:25,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:25,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:26,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:26,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 14:56:26,027 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 14:56:26,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 14:56:26,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-02 14:56:26,028 INFO L87 Difference]: Start difference. First operand 354 states and 537 transitions. Second operand 5 states. [2019-10-02 14:56:26,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:26,155 INFO L93 Difference]: Finished difference Result 1232 states and 1892 transitions. [2019-10-02 14:56:26,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 14:56:26,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-10-02 14:56:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:26,161 INFO L225 Difference]: With dead ends: 1232 [2019-10-02 14:56:26,162 INFO L226 Difference]: Without dead ends: 902 [2019-10-02 14:56:26,164 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-02 14:56:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2019-10-02 14:56:26,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 898. [2019-10-02 14:56:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2019-10-02 14:56:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1369 transitions. [2019-10-02 14:56:26,234 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1369 transitions. Word has length 44 [2019-10-02 14:56:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:26,235 INFO L475 AbstractCegarLoop]: Abstraction has 898 states and 1369 transitions. [2019-10-02 14:56:26,235 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 14:56:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1369 transitions. [2019-10-02 14:56:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-02 14:56:26,243 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:26,244 INFO L411 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] [2019-10-02 14:56:26,244 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:26,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:26,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1112409250, now seen corresponding path program 1 times [2019-10-02 14:56:26,245 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:26,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:26,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:26,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:26,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:26,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:26,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:56:26,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:56:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:56:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:26,306 INFO L87 Difference]: Start difference. First operand 898 states and 1369 transitions. Second operand 3 states. [2019-10-02 14:56:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:26,438 INFO L93 Difference]: Finished difference Result 2334 states and 3555 transitions. [2019-10-02 14:56:26,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:56:26,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-02 14:56:26,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:26,448 INFO L225 Difference]: With dead ends: 2334 [2019-10-02 14:56:26,449 INFO L226 Difference]: Without dead ends: 1460 [2019-10-02 14:56:26,451 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2019-10-02 14:56:26,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1458. [2019-10-02 14:56:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2019-10-02 14:56:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 2185 transitions. [2019-10-02 14:56:26,546 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 2185 transitions. Word has length 46 [2019-10-02 14:56:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:26,547 INFO L475 AbstractCegarLoop]: Abstraction has 1458 states and 2185 transitions. [2019-10-02 14:56:26,547 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:56:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2185 transitions. [2019-10-02 14:56:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-02 14:56:26,550 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:26,551 INFO L411 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] [2019-10-02 14:56:26,551 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:26,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1926406488, now seen corresponding path program 1 times [2019-10-02 14:56:26,552 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:26,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:26,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:26,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:26,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:26,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:26,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 14:56:26,679 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 14:56:26,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 14:56:26,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-02 14:56:26,681 INFO L87 Difference]: Start difference. First operand 1458 states and 2185 transitions. Second operand 6 states. [2019-10-02 14:56:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:27,187 INFO L93 Difference]: Finished difference Result 5648 states and 8476 transitions. [2019-10-02 14:56:27,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 14:56:27,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2019-10-02 14:56:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:27,210 INFO L225 Difference]: With dead ends: 5648 [2019-10-02 14:56:27,210 INFO L226 Difference]: Without dead ends: 4214 [2019-10-02 14:56:27,214 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-10-02 14:56:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2019-10-02 14:56:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4210. [2019-10-02 14:56:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2019-10-02 14:56:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6281 transitions. [2019-10-02 14:56:27,505 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6281 transitions. Word has length 46 [2019-10-02 14:56:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:27,506 INFO L475 AbstractCegarLoop]: Abstraction has 4210 states and 6281 transitions. [2019-10-02 14:56:27,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 14:56:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6281 transitions. [2019-10-02 14:56:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-02 14:56:27,508 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:27,508 INFO L411 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] [2019-10-02 14:56:27,508 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash -742396141, now seen corresponding path program 1 times [2019-10-02 14:56:27,509 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:27,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:27,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:27,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:27,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:27,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:27,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 14:56:27,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 14:56:27,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 14:56:27,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 14:56:27,626 INFO L87 Difference]: Start difference. First operand 4210 states and 6281 transitions. Second operand 5 states. [2019-10-02 14:56:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:28,220 INFO L93 Difference]: Finished difference Result 8684 states and 12826 transitions. [2019-10-02 14:56:28,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 14:56:28,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-10-02 14:56:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:28,282 INFO L225 Difference]: With dead ends: 8684 [2019-10-02 14:56:28,282 INFO L226 Difference]: Without dead ends: 8682 [2019-10-02 14:56:28,290 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 14:56:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2019-10-02 14:56:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 4498. [2019-10-02 14:56:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2019-10-02 14:56:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 6569 transitions. [2019-10-02 14:56:28,861 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 6569 transitions. Word has length 46 [2019-10-02 14:56:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:28,861 INFO L475 AbstractCegarLoop]: Abstraction has 4498 states and 6569 transitions. [2019-10-02 14:56:28,861 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 14:56:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 6569 transitions. [2019-10-02 14:56:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-02 14:56:28,862 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:28,862 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:56:28,863 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:28,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:28,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1529824191, now seen corresponding path program 1 times [2019-10-02 14:56:28,863 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:28,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:28,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:28,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:28,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:28,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:28,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:56:28,932 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:56:28,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:56:28,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:28,933 INFO L87 Difference]: Start difference. First operand 4498 states and 6569 transitions. Second operand 3 states. [2019-10-02 14:56:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:29,441 INFO L93 Difference]: Finished difference Result 10814 states and 15783 transitions. [2019-10-02 14:56:29,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:56:29,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-02 14:56:29,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:29,482 INFO L225 Difference]: With dead ends: 10814 [2019-10-02 14:56:29,482 INFO L226 Difference]: Without dead ends: 6340 [2019-10-02 14:56:29,492 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:29,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2019-10-02 14:56:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 6278. [2019-10-02 14:56:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2019-10-02 14:56:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9057 transitions. [2019-10-02 14:56:29,955 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9057 transitions. Word has length 47 [2019-10-02 14:56:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:29,957 INFO L475 AbstractCegarLoop]: Abstraction has 6278 states and 9057 transitions. [2019-10-02 14:56:29,957 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:56:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9057 transitions. [2019-10-02 14:56:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-02 14:56:29,960 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:29,961 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:56:29,961 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:29,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:29,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1418257868, now seen corresponding path program 1 times [2019-10-02 14:56:29,962 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:29,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:29,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:29,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:29,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:30,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 14:56:30,080 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 14:56:30,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:30,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 14:56:30,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 14:56:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:30,451 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 14:56:30,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-10-02 14:56:30,451 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 14:56:30,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 14:56:30,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-02 14:56:30,452 INFO L87 Difference]: Start difference. First operand 6278 states and 9057 transitions. Second operand 11 states. [2019-10-02 14:56:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:32,422 INFO L93 Difference]: Finished difference Result 20769 states and 29803 transitions. [2019-10-02 14:56:32,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 14:56:32,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2019-10-02 14:56:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:32,496 INFO L225 Difference]: With dead ends: 20769 [2019-10-02 14:56:32,497 INFO L226 Difference]: Without dead ends: 16623 [2019-10-02 14:56:32,513 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-10-02 14:56:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16623 states. [2019-10-02 14:56:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16623 to 8858. [2019-10-02 14:56:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8858 states. [2019-10-02 14:56:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8858 states to 8858 states and 12721 transitions. [2019-10-02 14:56:33,408 INFO L78 Accepts]: Start accepts. Automaton has 8858 states and 12721 transitions. Word has length 65 [2019-10-02 14:56:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:33,409 INFO L475 AbstractCegarLoop]: Abstraction has 8858 states and 12721 transitions. [2019-10-02 14:56:33,409 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 14:56:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 8858 states and 12721 transitions. [2019-10-02 14:56:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-02 14:56:33,413 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:33,414 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:56:33,414 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:33,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:33,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1905093699, now seen corresponding path program 1 times [2019-10-02 14:56:33,415 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:33,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:33,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:33,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:33,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:33,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:33,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:56:33,497 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:56:33,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:56:33,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:33,501 INFO L87 Difference]: Start difference. First operand 8858 states and 12721 transitions. Second operand 3 states. [2019-10-02 14:56:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:34,580 INFO L93 Difference]: Finished difference Result 14166 states and 20229 transitions. [2019-10-02 14:56:34,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:56:34,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-10-02 14:56:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:34,615 INFO L225 Difference]: With dead ends: 14166 [2019-10-02 14:56:34,615 INFO L226 Difference]: Without dead ends: 9283 [2019-10-02 14:56:34,630 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9283 states. [2019-10-02 14:56:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9283 to 7819. [2019-10-02 14:56:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7819 states. [2019-10-02 14:56:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7819 states to 7819 states and 11025 transitions. [2019-10-02 14:56:35,387 INFO L78 Accepts]: Start accepts. Automaton has 7819 states and 11025 transitions. Word has length 65 [2019-10-02 14:56:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:35,387 INFO L475 AbstractCegarLoop]: Abstraction has 7819 states and 11025 transitions. [2019-10-02 14:56:35,387 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:56:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7819 states and 11025 transitions. [2019-10-02 14:56:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-02 14:56:35,391 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:35,391 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:56:35,392 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:35,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1174779130, now seen corresponding path program 1 times [2019-10-02 14:56:35,392 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:35,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:35,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:35,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:35,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:35,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 14:56:35,579 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 14:56:35,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:35,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-02 14:56:35,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 14:56:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 14:56:35,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 14:56:35,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2019-10-02 14:56:35,809 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 14:56:35,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 14:56:35,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-02 14:56:35,809 INFO L87 Difference]: Start difference. First operand 7819 states and 11025 transitions. Second operand 12 states. [2019-10-02 14:56:38,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:38,291 INFO L93 Difference]: Finished difference Result 28063 states and 39129 transitions. [2019-10-02 14:56:38,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-02 14:56:38,292 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2019-10-02 14:56:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:38,340 INFO L225 Difference]: With dead ends: 28063 [2019-10-02 14:56:38,340 INFO L226 Difference]: Without dead ends: 20308 [2019-10-02 14:56:38,361 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2019-10-02 14:56:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20308 states. [2019-10-02 14:56:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20308 to 11857. [2019-10-02 14:56:39,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11857 states. [2019-10-02 14:56:39,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11857 states to 11857 states and 16607 transitions. [2019-10-02 14:56:39,460 INFO L78 Accepts]: Start accepts. Automaton has 11857 states and 16607 transitions. Word has length 65 [2019-10-02 14:56:39,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:39,460 INFO L475 AbstractCegarLoop]: Abstraction has 11857 states and 16607 transitions. [2019-10-02 14:56:39,460 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 14:56:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 11857 states and 16607 transitions. [2019-10-02 14:56:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-02 14:56:39,464 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:39,464 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:56:39,464 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash 442725761, now seen corresponding path program 1 times [2019-10-02 14:56:39,465 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:39,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:39,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:39,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:39,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:39,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 14:56:39,558 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 14:56:39,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:39,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 14:56:39,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 14:56:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:39,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 14:56:39,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-10-02 14:56:39,728 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 14:56:39,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 14:56:39,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-02 14:56:39,729 INFO L87 Difference]: Start difference. First operand 11857 states and 16607 transitions. Second operand 11 states. [2019-10-02 14:56:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:41,540 INFO L93 Difference]: Finished difference Result 26538 states and 36961 transitions. [2019-10-02 14:56:41,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 14:56:41,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2019-10-02 14:56:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:41,597 INFO L225 Difference]: With dead ends: 26538 [2019-10-02 14:56:41,598 INFO L226 Difference]: Without dead ends: 22932 [2019-10-02 14:56:41,615 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-10-02 14:56:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22932 states. [2019-10-02 14:56:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22932 to 13263. [2019-10-02 14:56:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13263 states. [2019-10-02 14:56:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13263 states to 13263 states and 18540 transitions. [2019-10-02 14:56:43,456 INFO L78 Accepts]: Start accepts. Automaton has 13263 states and 18540 transitions. Word has length 65 [2019-10-02 14:56:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:43,456 INFO L475 AbstractCegarLoop]: Abstraction has 13263 states and 18540 transitions. [2019-10-02 14:56:43,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 14:56:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 13263 states and 18540 transitions. [2019-10-02 14:56:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-02 14:56:43,462 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:43,462 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:56:43,462 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:43,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:43,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1883912516, now seen corresponding path program 1 times [2019-10-02 14:56:43,463 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:43,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:43,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:43,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:43,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:43,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:56:43,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:56:43,515 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:56:43,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:56:43,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:43,516 INFO L87 Difference]: Start difference. First operand 13263 states and 18540 transitions. Second operand 3 states. [2019-10-02 14:56:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:56:44,394 INFO L93 Difference]: Finished difference Result 23665 states and 32961 transitions. [2019-10-02 14:56:44,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:56:44,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-10-02 14:56:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:56:44,422 INFO L225 Difference]: With dead ends: 23665 [2019-10-02 14:56:44,422 INFO L226 Difference]: Without dead ends: 14152 [2019-10-02 14:56:44,442 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:56:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14152 states. [2019-10-02 14:56:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14152 to 14133. [2019-10-02 14:56:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14133 states. [2019-10-02 14:56:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14133 states to 14133 states and 19350 transitions. [2019-10-02 14:56:45,704 INFO L78 Accepts]: Start accepts. Automaton has 14133 states and 19350 transitions. Word has length 66 [2019-10-02 14:56:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:56:45,705 INFO L475 AbstractCegarLoop]: Abstraction has 14133 states and 19350 transitions. [2019-10-02 14:56:45,705 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:56:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 14133 states and 19350 transitions. [2019-10-02 14:56:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-02 14:56:45,708 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:56:45,709 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:56:45,709 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:56:45,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:56:45,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2075170094, now seen corresponding path program 1 times [2019-10-02 14:56:45,709 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:56:45,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:56:45,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:45,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:45,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:56:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:56:45,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 14:56:45,928 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 14:56:45,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:56:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:56:46,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-02 14:56:46,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 14:56:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 14:56:46,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 14:56:46,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-10-02 14:56:46,148 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 14:56:46,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 14:56:46,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-02 14:56:46,149 INFO L87 Difference]: Start difference. First operand 14133 states and 19350 transitions. Second operand 12 states. [2019-10-02 14:57:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:57:02,907 INFO L93 Difference]: Finished difference Result 132190 states and 180070 transitions. [2019-10-02 14:57:02,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2019-10-02 14:57:02,907 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2019-10-02 14:57:02,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:57:03,100 INFO L225 Difference]: With dead ends: 132190 [2019-10-02 14:57:03,100 INFO L226 Difference]: Without dead ends: 118599 [2019-10-02 14:57:03,163 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7697 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2636, Invalid=15186, Unknown=0, NotChecked=0, Total=17822 [2019-10-02 14:57:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118599 states. [2019-10-02 14:57:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118599 to 54729. [2019-10-02 14:57:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54729 states. [2019-10-02 14:57:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54729 states to 54729 states and 74035 transitions. [2019-10-02 14:57:07,702 INFO L78 Accepts]: Start accepts. Automaton has 54729 states and 74035 transitions. Word has length 66 [2019-10-02 14:57:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:57:07,702 INFO L475 AbstractCegarLoop]: Abstraction has 54729 states and 74035 transitions. [2019-10-02 14:57:07,702 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 14:57:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 54729 states and 74035 transitions. [2019-10-02 14:57:07,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-02 14:57:07,709 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:57:07,709 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:57:07,710 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:57:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:57:07,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2028493329, now seen corresponding path program 1 times [2019-10-02 14:57:07,710 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:57:07,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:57:07,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:07,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:57:07,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:57:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-02 14:57:07,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:57:07,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 14:57:07,799 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 14:57:07,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 14:57:07,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-02 14:57:07,800 INFO L87 Difference]: Start difference. First operand 54729 states and 74035 transitions. Second operand 5 states. [2019-10-02 14:57:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:57:13,857 INFO L93 Difference]: Finished difference Result 86826 states and 118355 transitions. [2019-10-02 14:57:13,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 14:57:13,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-10-02 14:57:13,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:57:13,942 INFO L225 Difference]: With dead ends: 86826 [2019-10-02 14:57:13,942 INFO L226 Difference]: Without dead ends: 72083 [2019-10-02 14:57:13,973 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-02 14:57:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72083 states. [2019-10-02 14:57:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72083 to 62356. [2019-10-02 14:57:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62356 states. [2019-10-02 14:57:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62356 states to 62356 states and 84200 transitions. [2019-10-02 14:57:18,826 INFO L78 Accepts]: Start accepts. Automaton has 62356 states and 84200 transitions. Word has length 67 [2019-10-02 14:57:18,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:57:18,827 INFO L475 AbstractCegarLoop]: Abstraction has 62356 states and 84200 transitions. [2019-10-02 14:57:18,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 14:57:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 62356 states and 84200 transitions. [2019-10-02 14:57:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-02 14:57:18,832 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:57:18,833 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:57:18,833 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:57:18,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:57:18,833 INFO L82 PathProgramCache]: Analyzing trace with hash 464290294, now seen corresponding path program 1 times [2019-10-02 14:57:18,833 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:57:18,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:57:18,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:18,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:57:18,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:57:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:57:18,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:57:18,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:57:18,876 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:57:18,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:57:18,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:57:18,877 INFO L87 Difference]: Start difference. First operand 62356 states and 84200 transitions. Second operand 3 states. [2019-10-02 14:57:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:57:24,218 INFO L93 Difference]: Finished difference Result 94191 states and 127422 transitions. [2019-10-02 14:57:24,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:57:24,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-02 14:57:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:57:24,293 INFO L225 Difference]: With dead ends: 94191 [2019-10-02 14:57:24,293 INFO L226 Difference]: Without dead ends: 60605 [2019-10-02 14:57:24,329 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:57:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60605 states. [2019-10-02 14:57:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60605 to 60586. [2019-10-02 14:57:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60586 states. [2019-10-02 14:57:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60586 states to 60586 states and 81152 transitions. [2019-10-02 14:57:28,994 INFO L78 Accepts]: Start accepts. Automaton has 60586 states and 81152 transitions. Word has length 67 [2019-10-02 14:57:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:57:28,995 INFO L475 AbstractCegarLoop]: Abstraction has 60586 states and 81152 transitions. [2019-10-02 14:57:28,995 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:57:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 60586 states and 81152 transitions. [2019-10-02 14:57:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-02 14:57:29,000 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:57:29,000 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:57:29,000 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:57:29,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:57:29,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1527473086, now seen corresponding path program 1 times [2019-10-02 14:57:29,001 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:57:29,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:57:29,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:29,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:57:29,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:57:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:57:29,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 14:57:29,103 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 14:57:29,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:57:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:57:29,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-02 14:57:29,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 14:57:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-02 14:57:29,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 14:57:29,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-02 14:57:29,275 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 14:57:29,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 14:57:29,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-02 14:57:29,276 INFO L87 Difference]: Start difference. First operand 60586 states and 81152 transitions. Second operand 11 states. [2019-10-02 14:57:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:57:36,841 INFO L93 Difference]: Finished difference Result 128023 states and 171770 transitions. [2019-10-02 14:57:36,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 14:57:36,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2019-10-02 14:57:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:57:36,945 INFO L225 Difference]: With dead ends: 128023 [2019-10-02 14:57:36,945 INFO L226 Difference]: Without dead ends: 81245 [2019-10-02 14:57:36,990 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-02 14:57:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81245 states. [2019-10-02 14:57:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81245 to 60586. [2019-10-02 14:57:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60586 states. [2019-10-02 14:57:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60586 states to 60586 states and 80070 transitions. [2019-10-02 14:57:42,282 INFO L78 Accepts]: Start accepts. Automaton has 60586 states and 80070 transitions. Word has length 68 [2019-10-02 14:57:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:57:42,283 INFO L475 AbstractCegarLoop]: Abstraction has 60586 states and 80070 transitions. [2019-10-02 14:57:42,283 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 14:57:42,283 INFO L276 IsEmpty]: Start isEmpty. Operand 60586 states and 80070 transitions. [2019-10-02 14:57:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-02 14:57:42,286 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:57:42,286 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:57:42,287 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:57:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:57:42,287 INFO L82 PathProgramCache]: Analyzing trace with hash -941431235, now seen corresponding path program 1 times [2019-10-02 14:57:42,287 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:57:42,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:57:42,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:42,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:57:42,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:57:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:57:42,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 14:57:42,360 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 14:57:42,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:57:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:57:42,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 14:57:42,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 14:57:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:57:42,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 14:57:42,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-10-02 14:57:42,549 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 14:57:42,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 14:57:42,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-02 14:57:42,550 INFO L87 Difference]: Start difference. First operand 60586 states and 80070 transitions. Second operand 11 states. [2019-10-02 14:57:51,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:57:51,297 INFO L93 Difference]: Finished difference Result 121534 states and 160152 transitions. [2019-10-02 14:57:51,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 14:57:51,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2019-10-02 14:57:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:57:51,404 INFO L225 Difference]: With dead ends: 121534 [2019-10-02 14:57:51,405 INFO L226 Difference]: Without dead ends: 85978 [2019-10-02 14:57:51,449 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-10-02 14:57:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85978 states. [2019-10-02 14:57:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85978 to 61874. [2019-10-02 14:57:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61874 states. [2019-10-02 14:57:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61874 states to 61874 states and 81224 transitions. [2019-10-02 14:57:57,296 INFO L78 Accepts]: Start accepts. Automaton has 61874 states and 81224 transitions. Word has length 68 [2019-10-02 14:57:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:57:57,297 INFO L475 AbstractCegarLoop]: Abstraction has 61874 states and 81224 transitions. [2019-10-02 14:57:57,297 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 14:57:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 61874 states and 81224 transitions. [2019-10-02 14:57:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-02 14:57:57,301 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:57:57,301 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:57:57,301 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:57:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:57:57,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1875085212, now seen corresponding path program 1 times [2019-10-02 14:57:57,301 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:57:57,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:57:57,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:57,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:57:57,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:57:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:57:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:57:57,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:57:57,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:57:57,342 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:57:57,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:57:57,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:57:57,342 INFO L87 Difference]: Start difference. First operand 61874 states and 81224 transitions. Second operand 3 states. [2019-10-02 14:58:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:58:04,722 INFO L93 Difference]: Finished difference Result 107746 states and 141345 transitions. [2019-10-02 14:58:04,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:58:04,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-10-02 14:58:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:58:04,798 INFO L225 Difference]: With dead ends: 107746 [2019-10-02 14:58:04,799 INFO L226 Difference]: Without dead ends: 63100 [2019-10-02 14:58:04,836 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:58:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63100 states. [2019-10-02 14:58:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63100 to 36685. [2019-10-02 14:58:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36685 states. [2019-10-02 14:58:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36685 states to 36685 states and 47388 transitions. [2019-10-02 14:58:08,852 INFO L78 Accepts]: Start accepts. Automaton has 36685 states and 47388 transitions. Word has length 68 [2019-10-02 14:58:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:58:08,852 INFO L475 AbstractCegarLoop]: Abstraction has 36685 states and 47388 transitions. [2019-10-02 14:58:08,852 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:58:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 36685 states and 47388 transitions. [2019-10-02 14:58:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-02 14:58:08,856 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:58:08,856 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:58:08,856 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:58:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:58:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash 631708975, now seen corresponding path program 1 times [2019-10-02 14:58:08,857 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:58:08,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:58:08,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:58:08,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:58:08,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:58:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:58:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 14:58:08,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:58:08,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 14:58:08,917 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 14:58:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 14:58:08,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-02 14:58:08,918 INFO L87 Difference]: Start difference. First operand 36685 states and 47388 transitions. Second operand 5 states. [2019-10-02 14:58:13,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:58:13,702 INFO L93 Difference]: Finished difference Result 55676 states and 72775 transitions. [2019-10-02 14:58:13,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 14:58:13,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-10-02 14:58:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:58:13,754 INFO L225 Difference]: With dead ends: 55676 [2019-10-02 14:58:13,755 INFO L226 Difference]: Without dead ends: 47090 [2019-10-02 14:58:13,770 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-02 14:58:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47090 states. [2019-10-02 14:58:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47090 to 43513. [2019-10-02 14:58:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43513 states. [2019-10-02 14:58:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43513 states to 43513 states and 56127 transitions. [2019-10-02 14:58:18,439 INFO L78 Accepts]: Start accepts. Automaton has 43513 states and 56127 transitions. Word has length 70 [2019-10-02 14:58:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:58:18,439 INFO L475 AbstractCegarLoop]: Abstraction has 43513 states and 56127 transitions. [2019-10-02 14:58:18,439 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 14:58:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 43513 states and 56127 transitions. [2019-10-02 14:58:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-02 14:58:18,444 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:58:18,444 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:58:18,444 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:58:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:58:18,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1917277063, now seen corresponding path program 1 times [2019-10-02 14:58:18,445 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:58:18,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:58:18,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:58:18,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:58:18,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:58:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:58:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 14:58:18,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:58:18,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 14:58:18,480 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 14:58:18,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 14:58:18,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:58:18,481 INFO L87 Difference]: Start difference. First operand 43513 states and 56127 transitions. Second operand 3 states. [2019-10-02 14:58:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:58:22,839 INFO L93 Difference]: Finished difference Result 83269 states and 107467 transitions. [2019-10-02 14:58:22,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 14:58:22,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-10-02 14:58:22,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:58:22,883 INFO L225 Difference]: With dead ends: 83269 [2019-10-02 14:58:22,883 INFO L226 Difference]: Without dead ends: 39816 [2019-10-02 14:58:22,914 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 14:58:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39816 states. [2019-10-02 14:58:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39816 to 39160. [2019-10-02 14:58:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39160 states. [2019-10-02 14:58:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39160 states to 39160 states and 50095 transitions. [2019-10-02 14:58:28,463 INFO L78 Accepts]: Start accepts. Automaton has 39160 states and 50095 transitions. Word has length 71 [2019-10-02 14:58:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:58:28,463 INFO L475 AbstractCegarLoop]: Abstraction has 39160 states and 50095 transitions. [2019-10-02 14:58:28,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 14:58:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 39160 states and 50095 transitions. [2019-10-02 14:58:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-02 14:58:28,467 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:58:28,467 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:58:28,467 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:58:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:58:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash -168256361, now seen corresponding path program 1 times [2019-10-02 14:58:28,468 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:58:28,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:58:28,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:58:28,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:58:28,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:58:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:58:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 14:58:28,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 14:58:28,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 14:58:28,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 14:58:28,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 14:58:28,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-02 14:58:28,540 INFO L87 Difference]: Start difference. First operand 39160 states and 50095 transitions. Second operand 5 states. [2019-10-02 14:58:33,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:58:33,683 INFO L93 Difference]: Finished difference Result 58129 states and 75151 transitions. [2019-10-02 14:58:33,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 14:58:33,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-10-02 14:58:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:58:33,757 INFO L225 Difference]: With dead ends: 58129 [2019-10-02 14:58:33,758 INFO L226 Difference]: Without dead ends: 49597 [2019-10-02 14:58:33,773 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-02 14:58:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49597 states. [2019-10-02 14:58:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49597 to 46285. [2019-10-02 14:58:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46285 states. [2019-10-02 14:58:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46285 states to 46285 states and 59196 transitions. [2019-10-02 14:58:38,902 INFO L78 Accepts]: Start accepts. Automaton has 46285 states and 59196 transitions. Word has length 71 [2019-10-02 14:58:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:58:38,902 INFO L475 AbstractCegarLoop]: Abstraction has 46285 states and 59196 transitions. [2019-10-02 14:58:38,902 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 14:58:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 46285 states and 59196 transitions. [2019-10-02 14:58:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-02 14:58:38,907 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:58:38,907 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:58:38,907 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:58:38,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:58:38,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1264889280, now seen corresponding path program 1 times [2019-10-02 14:58:38,908 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:58:38,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:58:38,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:58:38,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:58:38,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:58:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:58:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:58:39,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 14:58:39,132 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 14:58:39,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:58:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:58:39,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-02 14:58:39,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 14:58:39,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 14:58:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 14:58:39,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 14:58:39,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-10-02 14:58:39,716 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-02 14:58:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-02 14:58:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2019-10-02 14:58:39,717 INFO L87 Difference]: Start difference. First operand 46285 states and 59196 transitions. Second operand 17 states. [2019-10-02 14:59:08,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 14:59:08,840 INFO L93 Difference]: Finished difference Result 234970 states and 298531 transitions. [2019-10-02 14:59:08,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-10-02 14:59:08,840 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-10-02 14:59:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 14:59:09,101 INFO L225 Difference]: With dead ends: 234970 [2019-10-02 14:59:09,101 INFO L226 Difference]: Without dead ends: 194723 [2019-10-02 14:59:09,160 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=718, Invalid=2144, Unknown=0, NotChecked=0, Total=2862 [2019-10-02 14:59:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194723 states. [2019-10-02 14:59:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194723 to 94325. [2019-10-02 14:59:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94325 states. [2019-10-02 14:59:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94325 states to 94325 states and 120645 transitions. [2019-10-02 14:59:22,509 INFO L78 Accepts]: Start accepts. Automaton has 94325 states and 120645 transitions. Word has length 75 [2019-10-02 14:59:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 14:59:22,509 INFO L475 AbstractCegarLoop]: Abstraction has 94325 states and 120645 transitions. [2019-10-02 14:59:22,509 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-02 14:59:22,509 INFO L276 IsEmpty]: Start isEmpty. Operand 94325 states and 120645 transitions. [2019-10-02 14:59:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-02 14:59:22,515 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 14:59:22,515 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 14:59:22,516 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 14:59:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 14:59:22,516 INFO L82 PathProgramCache]: Analyzing trace with hash -904511359, now seen corresponding path program 1 times [2019-10-02 14:59:22,516 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 14:59:22,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 14:59:22,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:59:22,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:59:22,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 14:59:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:59:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:59:22,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 14:59:22,717 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 14:59:22,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 14:59:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 14:59:22,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-02 14:59:22,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 14:59:23,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 14:59:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 14:59:23,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 14:59:23,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2019-10-02 14:59:23,941 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-02 14:59:23,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-02 14:59:23,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-02 14:59:23,941 INFO L87 Difference]: Start difference. First operand 94325 states and 120645 transitions. Second operand 19 states. [2019-10-02 14:59:24,574 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-10-02 14:59:24,830 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-10-02 14:59:25,131 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-10-02 14:59:25,510 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-10-02 14:59:26,051 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-02 14:59:26,416 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-10-02 14:59:26,802 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-02 14:59:27,214 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-02 14:59:27,604 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-10-02 14:59:28,013 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-02 14:59:28,439 WARN L191 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-02 14:59:28,950 WARN L191 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-02 14:59:29,543 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-02 14:59:29,888 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-02 14:59:30,277 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-02 14:59:30,602 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-02 14:59:30,916 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-02 14:59:31,230 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-02 14:59:31,586 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-02 14:59:31,974 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-02 14:59:32,577 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-02 14:59:32,862 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-02 14:59:33,208 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-02 14:59:33,640 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-02 14:59:34,102 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-10-02 14:59:36,354 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-02 14:59:36,755 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-02 14:59:37,118 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-02 14:59:37,466 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-02 14:59:37,863 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-02 14:59:38,263 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-02 14:59:38,729 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-10-02 14:59:39,078 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-02 14:59:39,492 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-02 14:59:40,128 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-10-02 14:59:40,421 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-02 14:59:40,822 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-10-02 14:59:41,361 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-10-02 14:59:41,618 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-10-02 14:59:42,054 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-02 14:59:42,453 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-02 14:59:42,877 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-10-02 14:59:43,195 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-02 14:59:43,518 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-02 14:59:43,861 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-10-02 14:59:44,235 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-02 14:59:44,562 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-02 14:59:45,127 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-10-02 14:59:45,491 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-02 14:59:45,843 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-02 14:59:46,200 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-02 14:59:46,716 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-02 14:59:47,208 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-02 14:59:47,619 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-02 14:59:47,998 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-02 14:59:48,377 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-10-02 14:59:48,780 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-02 14:59:49,283 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-10-02 14:59:49,641 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-02 14:59:50,011 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-10-02 14:59:50,411 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-10-02 14:59:50,750 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-02 14:59:51,203 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-10-02 14:59:51,648 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-02 14:59:52,031 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-10-02 14:59:52,398 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-10-02 14:59:52,756 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-02 14:59:53,202 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-02 14:59:53,564 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-02 14:59:53,926 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-02 14:59:54,382 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-02 14:59:54,843 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-10-02 14:59:55,150 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-10-02 14:59:55,471 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-10-02 14:59:55,976 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-02 14:59:56,379 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-10-02 14:59:56,780 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-10-02 14:59:57,161 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-10-02 14:59:57,524 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-02 14:59:57,926 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-10-02 14:59:58,372 WARN L191 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-10-02 14:59:58,903 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-02 14:59:59,330 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-02 14:59:59,735 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-10-02 14:59:59,998 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-10-02 15:00:00,351 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-10-02 15:00:00,763 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-10-02 15:00:01,180 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-02 15:00:01,694 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-02 15:00:02,206 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-10-02 15:00:02,659 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-02 15:00:02,947 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-10-02 15:00:03,283 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-02 15:00:03,642 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-10-02 15:00:03,989 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-10-02 15:00:04,437 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-10-02 15:00:04,925 WARN L191 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-10-02 15:00:05,353 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-10-02 15:00:05,790 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-02 15:00:06,175 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-02 15:00:06,546 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-02 15:00:06,964 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-02 15:00:07,307 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-02 15:00:07,696 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-10-02 15:00:08,100 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-10-02 15:00:08,575 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-02 15:00:09,022 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-10-02 15:00:09,366 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-10-02 15:00:09,764 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-10-02 15:00:10,127 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-02 15:00:10,563 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-10-02 15:00:10,901 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-10-02 15:00:11,276 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-10-02 15:00:11,658 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-10-02 15:00:12,073 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-10-02 15:00:12,498 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-10-02 15:00:12,790 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-10-02 15:00:13,251 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-10-02 15:00:13,600 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-10-02 15:00:13,998 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-10-02 15:00:14,502 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-10-02 15:00:14,801 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-02 15:00:15,229 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-10-02 15:00:15,794 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-02 15:00:16,153 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-02 15:00:16,784 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-10-02 15:00:17,205 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-02 15:00:17,586 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-10-02 15:00:18,001 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-10-02 15:00:18,438 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-10-02 15:00:18,821 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-02 15:00:19,110 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-10-02 15:00:19,342 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-10-02 15:00:19,795 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-02 15:00:19,975 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-10-02 15:00:20,586 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-10-02 15:00:20,770 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-10-02 15:00:21,342 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-10-02 15:00:21,590 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:00:22,087 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-02 15:00:22,400 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-02 15:00:22,642 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-10-02 15:00:23,234 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-10-02 15:00:23,605 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-02 15:00:23,909 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-02 15:00:24,187 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-02 15:00:24,454 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-02 15:00:24,692 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-10-02 15:00:25,361 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-10-02 15:00:25,752 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-02 15:00:26,045 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-02 15:00:26,870 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-02 15:00:27,559 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-10-02 15:00:27,891 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-10-02 15:00:28,295 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-02 15:00:28,613 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-02 15:00:29,291 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-10-02 15:00:29,685 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-10-02 15:00:30,001 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-10-02 15:00:30,394 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-02 15:00:30,994 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-10-02 15:00:31,467 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-02 15:00:31,869 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-10-02 15:00:32,454 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-10-02 15:00:32,881 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-02 15:00:33,102 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:00:33,419 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-10-02 15:00:33,618 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-10-02 15:00:34,329 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-10-02 15:00:34,646 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-02 15:00:35,001 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-02 15:00:35,201 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-02 15:00:35,542 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-10-02 15:00:35,759 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-10-02 15:00:36,307 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2019-10-02 15:00:36,711 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2019-10-02 15:00:37,299 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-02 15:00:37,658 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-02 15:00:37,872 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-10-02 15:00:38,069 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-10-02 15:00:38,405 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-02 15:00:38,656 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-10-02 15:00:38,841 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-10-02 15:00:39,055 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-02 15:00:39,675 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:00:39,909 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-10-02 15:00:40,092 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-02 15:00:40,340 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-02 15:00:40,676 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-02 15:00:40,943 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-10-02 15:00:41,184 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-02 15:00:41,544 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-10-02 15:00:42,159 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-02 15:00:42,490 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-02 15:00:42,918 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-02 15:00:43,308 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-10-02 15:00:43,919 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-10-02 15:00:44,326 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-02 15:00:44,585 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-02 15:00:45,230 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-10-02 15:00:45,633 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-02 15:00:45,951 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-02 15:00:46,555 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-02 15:00:46,945 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-10-02 15:00:47,657 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-02 15:00:48,980 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-02 15:00:49,227 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-02 15:00:49,870 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:00:50,116 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-02 15:00:50,314 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-02 15:00:50,646 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-10-02 15:00:51,560 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-02 15:00:51,715 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-10-02 15:00:51,966 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-10-02 15:00:52,219 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-02 15:00:52,545 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-10-02 15:00:52,920 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-02 15:00:53,564 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-02 15:00:53,826 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:00:54,290 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-10-02 15:00:54,759 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-02 15:00:55,589 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-02 15:00:55,827 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-02 15:00:56,551 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-10-02 15:00:56,882 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-02 15:00:57,259 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-02 15:00:57,690 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-02 15:00:58,523 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-02 15:00:58,934 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-02 15:00:59,438 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-02 15:00:59,893 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-02 15:01:00,749 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:01:01,009 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:01:01,267 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-10-02 15:01:01,521 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-10-02 15:01:01,701 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-10-02 15:01:01,992 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-02 15:01:02,282 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-02 15:01:02,479 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-02 15:01:03,517 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-10-02 15:01:03,825 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-02 15:01:04,184 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-02 15:01:04,371 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-02 15:01:06,856 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-02 15:01:07,146 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-02 15:01:07,408 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-02 15:01:10,373 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-02 15:01:10,627 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-02 15:01:10,810 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-02 15:01:12,217 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-02 15:01:12,424 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-02 15:01:12,690 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-10-02 15:01:13,070 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-02 15:01:13,613 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-10-02 15:01:13,890 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-02 15:01:14,372 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2019-10-02 15:01:15,854 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:01:16,218 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-10-02 15:01:16,388 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-10-02 15:01:16,677 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-10-02 15:01:16,831 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-10-02 15:01:17,077 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-02 15:01:17,363 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-02 15:01:18,168 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-10-02 15:01:19,368 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-02 15:01:19,546 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-10-02 15:01:19,797 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-02 15:01:19,967 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-02 15:01:20,198 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-02 15:01:20,698 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-10-02 15:01:21,010 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-10-02 15:01:21,280 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-02 15:01:21,879 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-02 15:01:23,235 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-02 15:01:23,541 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-02 15:01:23,797 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:01:24,075 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:01:24,485 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-02 15:01:24,795 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-10-02 15:01:26,387 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-10-02 15:01:26,552 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-10-02 15:01:26,738 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-10-02 15:01:27,288 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-10-02 15:01:28,884 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-10-02 15:01:29,178 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-02 15:01:29,446 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-02 15:01:31,313 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-10-02 15:01:37,877 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-10-02 15:01:38,392 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-10-02 15:01:38,634 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-02 15:01:40,615 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-10-02 15:01:40,883 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-02 15:01:41,466 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-02 15:01:44,914 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-10-02 15:01:46,772 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-10-02 15:01:47,192 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-10-02 15:01:47,456 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-02 15:01:48,861 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-10-02 15:01:50,927 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-10-02 15:01:51,242 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-10-02 15:03:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 15:03:00,304 INFO L93 Difference]: Finished difference Result 590139 states and 750950 transitions. [2019-10-02 15:03:00,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 357 states. [2019-10-02 15:03:00,304 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 75 [2019-10-02 15:03:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 15:03:01,331 INFO L225 Difference]: With dead ends: 590139 [2019-10-02 15:03:01,331 INFO L226 Difference]: Without dead ends: 534615 [2019-10-02 15:03:01,469 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 53 SyntacticMatches, 15 SemanticMatches, 372 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71650 ImplicationChecksByTransitivity, 95.9s TimeCoverageRelationStatistics Valid=18993, Invalid=120509, Unknown=0, NotChecked=0, Total=139502 [2019-10-02 15:03:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534615 states. [2019-10-02 15:03:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534615 to 155870. [2019-10-02 15:03:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155870 states. [2019-10-02 15:03:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155870 states to 155870 states and 201012 transitions. [2019-10-02 15:03:43,363 INFO L78 Accepts]: Start accepts. Automaton has 155870 states and 201012 transitions. Word has length 75 [2019-10-02 15:03:43,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 15:03:43,363 INFO L475 AbstractCegarLoop]: Abstraction has 155870 states and 201012 transitions. [2019-10-02 15:03:43,363 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-02 15:03:43,363 INFO L276 IsEmpty]: Start isEmpty. Operand 155870 states and 201012 transitions. [2019-10-02 15:03:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-02 15:03:43,371 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 15:03:43,371 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 15:03:43,371 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 15:03:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 15:03:43,371 INFO L82 PathProgramCache]: Analyzing trace with hash -206681859, now seen corresponding path program 1 times [2019-10-02 15:03:43,371 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 15:03:43,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 15:03:43,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:03:43,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 15:03:43,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:03:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 15:03:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 15:03:43,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 15:03:43,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 15:03:43,415 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 15:03:43,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 15:03:43,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 15:03:43,416 INFO L87 Difference]: Start difference. First operand 155870 states and 201012 transitions. Second operand 3 states. [2019-10-02 15:04:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 15:04:17,691 INFO L93 Difference]: Finished difference Result 196810 states and 252947 transitions. [2019-10-02 15:04:17,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 15:04:17,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-02 15:04:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 15:04:17,909 INFO L225 Difference]: With dead ends: 196810 [2019-10-02 15:04:17,909 INFO L226 Difference]: Without dead ends: 150681 [2019-10-02 15:04:17,967 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 15:04:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150681 states. [2019-10-02 15:04:50,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150681 to 150679. [2019-10-02 15:04:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150679 states. [2019-10-02 15:04:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150679 states to 150679 states and 191705 transitions. [2019-10-02 15:04:50,282 INFO L78 Accepts]: Start accepts. Automaton has 150679 states and 191705 transitions. Word has length 76 [2019-10-02 15:04:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 15:04:50,283 INFO L475 AbstractCegarLoop]: Abstraction has 150679 states and 191705 transitions. [2019-10-02 15:04:50,283 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 15:04:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 150679 states and 191705 transitions. [2019-10-02 15:04:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-02 15:04:50,290 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 15:04:50,290 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 15:04:50,291 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 15:04:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 15:04:50,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1710892072, now seen corresponding path program 1 times [2019-10-02 15:04:50,291 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 15:04:50,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 15:04:50,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:04:50,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 15:04:50,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:04:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 15:04:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-02 15:04:50,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 15:04:50,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 15:04:50,335 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 15:04:50,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 15:04:50,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 15:04:50,336 INFO L87 Difference]: Start difference. First operand 150679 states and 191705 transitions. Second operand 3 states. [2019-10-02 15:05:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 15:05:16,170 INFO L93 Difference]: Finished difference Result 250254 states and 319296 transitions. [2019-10-02 15:05:16,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 15:05:16,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-02 15:05:16,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 15:05:16,315 INFO L225 Difference]: With dead ends: 250254 [2019-10-02 15:05:16,315 INFO L226 Difference]: Without dead ends: 110940 [2019-10-02 15:05:16,403 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 15:05:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110940 states. [2019-10-02 15:05:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110940 to 88759. [2019-10-02 15:05:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88759 states. [2019-10-02 15:05:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88759 states to 88759 states and 110875 transitions. [2019-10-02 15:05:35,961 INFO L78 Accepts]: Start accepts. Automaton has 88759 states and 110875 transitions. Word has length 76 [2019-10-02 15:05:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 15:05:35,962 INFO L475 AbstractCegarLoop]: Abstraction has 88759 states and 110875 transitions. [2019-10-02 15:05:35,962 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 15:05:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 88759 states and 110875 transitions. [2019-10-02 15:05:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-02 15:05:35,967 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 15:05:35,967 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 15:05:35,967 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 15:05:35,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 15:05:35,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1270117650, now seen corresponding path program 1 times [2019-10-02 15:05:35,968 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 15:05:35,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 15:05:35,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:05:35,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 15:05:35,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:05:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 15:05:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 15:05:36,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 15:05:36,655 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 15:05:36,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 15:05:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 15:05:36,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-02 15:05:36,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 15:05:37,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 15:05:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 15:05:37,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 15:05:37,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 34 [2019-10-02 15:05:37,422 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-02 15:05:37,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-02 15:05:37,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2019-10-02 15:05:37,422 INFO L87 Difference]: Start difference. First operand 88759 states and 110875 transitions. Second operand 34 states. [2019-10-02 15:05:37,735 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2019-10-02 15:05:38,937 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-10-02 15:05:39,353 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-10-02 15:05:39,636 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-10-02 15:05:39,972 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2019-10-02 15:05:41,393 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-10-02 15:05:41,937 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2019-10-02 15:05:42,456 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2019-10-02 15:05:42,684 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-02 15:05:42,927 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-02 15:05:43,655 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-10-02 15:05:43,833 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-10-02 15:05:44,147 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-02 15:05:44,385 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-02 15:05:45,081 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-10-02 15:05:45,272 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-10-02 15:05:45,551 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-02 15:05:45,904 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-10-02 15:05:46,081 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-10-02 15:05:46,236 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-02 15:05:46,669 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-10-02 15:05:47,078 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-10-02 15:05:47,343 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-02 15:05:47,780 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-10-02 15:05:48,474 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-02 15:05:48,704 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-10-02 15:05:49,038 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-10-02 15:05:49,252 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-10-02 15:05:49,452 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-10-02 15:05:49,651 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-10-02 15:05:49,915 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-02 15:05:50,470 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-10-02 15:05:51,212 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-10-02 15:05:51,389 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-10-02 15:05:51,745 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2019-10-02 15:05:52,442 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-10-02 15:05:53,017 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2019-10-02 15:05:53,210 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-02 15:05:53,445 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-10-02 15:05:53,810 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-10-02 15:05:54,025 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-10-02 15:05:54,447 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-02 15:05:54,610 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-10-02 15:05:54,763 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-10-02 15:05:55,039 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-02 15:05:55,428 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-10-02 15:05:55,637 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-10-02 15:05:55,956 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-10-02 15:05:56,217 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-10-02 15:05:57,544 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-10-02 15:05:58,058 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-10-02 15:05:58,262 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-10-02 15:05:59,152 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-10-02 15:05:59,429 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 15:05:59,835 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-02 15:06:00,350 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2019-10-02 15:06:00,942 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2019-10-02 15:06:01,825 WARN L191 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2019-10-02 15:06:02,235 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-10-02 15:06:02,951 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 114 [2019-10-02 15:06:03,141 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-10-02 15:06:03,361 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-10-02 15:06:04,060 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2019-10-02 15:06:04,562 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 15:06:05,957 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-10-02 15:06:06,312 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-10-02 15:06:06,882 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-10-02 15:06:07,996 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-10-02 15:06:08,423 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-10-02 15:06:08,750 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-10-02 15:06:10,402 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-10-02 15:06:11,270 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-10-02 15:06:11,954 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-10-02 15:06:12,290 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-10-02 15:06:12,693 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-02 15:06:13,028 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-10-02 15:06:13,226 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 15:06:13,542 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-02 15:06:13,800 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-10-02 15:06:14,317 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-10-02 15:06:14,805 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-02 15:06:15,187 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-02 15:06:15,524 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-10-02 15:06:16,341 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2019-10-02 15:06:17,980 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-10-02 15:06:19,944 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-10-02 15:06:21,426 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-10-02 15:06:22,718 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-10-02 15:06:23,043 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-10-02 15:06:23,940 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-10-02 15:06:24,964 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-10-02 15:06:30,286 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-10-02 15:06:31,363 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-10-02 15:06:33,475 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-10-02 15:06:36,589 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-10-02 15:06:37,602 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-10-02 15:07:11,307 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-10-02 15:07:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 15:07:35,739 INFO L93 Difference]: Finished difference Result 348541 states and 434184 transitions. [2019-10-02 15:07:35,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2019-10-02 15:07:35,740 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 77 [2019-10-02 15:07:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 15:07:36,097 INFO L225 Difference]: With dead ends: 348541 [2019-10-02 15:07:36,097 INFO L226 Difference]: Without dead ends: 291412 [2019-10-02 15:07:36,166 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22502 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=9906, Invalid=43224, Unknown=0, NotChecked=0, Total=53130 [2019-10-02 15:07:36,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291412 states. [2019-10-02 15:08:02,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291412 to 100530. [2019-10-02 15:08:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100530 states. [2019-10-02 15:08:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100530 states to 100530 states and 125456 transitions. [2019-10-02 15:08:02,852 INFO L78 Accepts]: Start accepts. Automaton has 100530 states and 125456 transitions. Word has length 77 [2019-10-02 15:08:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 15:08:02,852 INFO L475 AbstractCegarLoop]: Abstraction has 100530 states and 125456 transitions. [2019-10-02 15:08:02,852 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-10-02 15:08:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 100530 states and 125456 transitions. [2019-10-02 15:08:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-02 15:08:02,880 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 15:08:02,881 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2019-10-02 15:08:02,881 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 15:08:02,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 15:08:02,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1997196966, now seen corresponding path program 2 times [2019-10-02 15:08:02,881 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 15:08:02,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 15:08:02,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:08:02,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 15:08:02,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:08:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 15:08:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-02 15:08:02,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 15:08:02,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 15:08:02,933 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 15:08:02,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 15:08:02,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 15:08:02,934 INFO L87 Difference]: Start difference. First operand 100530 states and 125456 transitions. Second operand 3 states. [2019-10-02 15:08:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 15:08:30,676 INFO L93 Difference]: Finished difference Result 198074 states and 247456 transitions. [2019-10-02 15:08:30,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 15:08:30,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-10-02 15:08:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 15:08:30,794 INFO L225 Difference]: With dead ends: 198074 [2019-10-02 15:08:30,795 INFO L226 Difference]: Without dead ends: 97601 [2019-10-02 15:08:30,860 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 15:08:30,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97601 states. [2019-10-02 15:08:55,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97601 to 96389. [2019-10-02 15:08:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96389 states. [2019-10-02 15:08:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96389 states to 96389 states and 118417 transitions. [2019-10-02 15:08:55,445 INFO L78 Accepts]: Start accepts. Automaton has 96389 states and 118417 transitions. Word has length 107 [2019-10-02 15:08:55,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 15:08:55,445 INFO L475 AbstractCegarLoop]: Abstraction has 96389 states and 118417 transitions. [2019-10-02 15:08:55,445 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 15:08:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 96389 states and 118417 transitions. [2019-10-02 15:08:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-02 15:08:55,460 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 15:08:55,460 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 15:08:55,460 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 15:08:55,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 15:08:55,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1225997574, now seen corresponding path program 1 times [2019-10-02 15:08:55,461 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 15:08:55,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 15:08:55,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:08:55,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 15:08:55,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 15:08:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 15:08:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-02 15:08:55,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 15:08:55,576 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 15:08:55,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 15:08:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 15:08:55,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-02 15:08:55,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 15:08:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-02 15:08:55,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 15:08:55,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 11 [2019-10-02 15:08:55,913 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 15:08:55,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 15:08:55,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-10-02 15:08:55,914 INFO L87 Difference]: Start difference. First operand 96389 states and 118417 transitions. Second operand 11 states.