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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 11:30:34,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 11:30:34,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 11:30:34,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 11:30:34,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 11:30:34,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 11:30:34,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 11:30:34,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 11:30:34,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 11:30:34,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 11:30:34,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 11:30:34,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 11:30:34,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 11:30:34,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 11:30:34,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 11:30:34,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 11:30:34,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 11:30:34,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 11:30:34,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 11:30:34,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 11:30:34,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 11:30:34,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 11:30:34,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 11:30:34,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 11:30:34,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 11:30:34,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 11:30:34,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 11:30:34,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 11:30:34,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 11:30:34,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 11:30:34,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 11:30:34,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 11:30:34,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 11:30:34,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 11:30:34,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 11:30:34,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 11:30:34,177 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 [2019-09-08 11:30:34,201 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 11:30:34,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 11:30:34,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 11:30:34,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 11:30:34,204 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 11:30:34,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 11:30:34,205 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 11:30:34,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 11:30:34,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 11:30:34,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 11:30:34,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 11:30:34,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 11:30:34,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 11:30:34,207 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 11:30:34,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 11:30:34,208 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 11:30:34,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 11:30:34,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 11:30:34,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 11:30:34,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 11:30:34,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 11:30:34,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 11:30:34,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 11:30:34,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 11:30:34,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 11:30:34,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 11:30:34,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 11:30:34,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 11:30:34,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 11:30:34,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 11:30:34,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 11:30:34,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 11:30:34,288 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 11:30:34,289 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 11:30:34,290 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:30:34,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7cf3051/6b0e5bf32adc4f94a8ae9dd5884d58b2/FLAGbf7a9b433 [2019-09-08 11:30:34,837 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 11:30:34,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:30:34,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7cf3051/6b0e5bf32adc4f94a8ae9dd5884d58b2/FLAGbf7a9b433 [2019-09-08 11:30:35,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7cf3051/6b0e5bf32adc4f94a8ae9dd5884d58b2 [2019-09-08 11:30:35,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 11:30:35,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 11:30:35,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 11:30:35,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 11:30:35,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 11:30:35,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eccc939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35, skipping insertion in model container [2019-09-08 11:30:35,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,164 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 11:30:35,203 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 11:30:35,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:30:35,486 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 11:30:35,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:30:35,660 INFO L192 MainTranslator]: Completed translation [2019-09-08 11:30:35,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35 WrapperNode [2019-09-08 11:30:35,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 11:30:35,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 11:30:35,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 11:30:35,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 11:30:35,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (1/1) ... [2019-09-08 11:30:35,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 11:30:35,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 11:30:35,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 11:30:35,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 11:30:35,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (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 [2019-09-08 11:30:35,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 11:30:35,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 11:30:35,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 11:30:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 11:30:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 11:30:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 11:30:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 11:30:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 11:30:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 11:30:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 11:30:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 11:30:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 11:30:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 11:30:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 11:30:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 11:30:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 11:30:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 11:30:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 11:30:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 11:30:36,262 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 11:30:36,262 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 11:30:36,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:30:36 BoogieIcfgContainer [2019-09-08 11:30:36,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 11:30:36,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 11:30:36,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 11:30:36,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 11:30:36,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 11:30:35" (1/3) ... [2019-09-08 11:30:36,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14af704e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:30:36, skipping insertion in model container [2019-09-08 11:30:36,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:30:35" (2/3) ... [2019-09-08 11:30:36,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14af704e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:30:36, skipping insertion in model container [2019-09-08 11:30:36,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:30:36" (3/3) ... [2019-09-08 11:30:36,272 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:30:36,281 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 11:30:36,289 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 11:30:36,308 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 11:30:36,335 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 11:30:36,335 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 11:30:36,336 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 11:30:36,336 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 11:30:36,336 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 11:30:36,336 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 11:30:36,336 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 11:30:36,336 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 11:30:36,337 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 11:30:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2019-09-08 11:30:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-08 11:30:36,361 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:36,362 INFO L399 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] [2019-09-08 11:30:36,364 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:36,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1783830804, now seen corresponding path program 1 times [2019-09-08 11:30:36,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:36,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:36,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:36,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:36,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:36,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:36,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:30:36,781 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:30:36,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:30:36,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:30:36,794 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2019-09-08 11:30:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:36,874 INFO L93 Difference]: Finished difference Result 153 states and 237 transitions. [2019-09-08 11:30:36,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:30:36,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-08 11:30:36,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:36,891 INFO L225 Difference]: With dead ends: 153 [2019-09-08 11:30:36,891 INFO L226 Difference]: Without dead ends: 99 [2019-09-08 11:30:36,896 INFO L628 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 [2019-09-08 11:30:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-09-08 11:30:36,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2019-09-08 11:30:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-09-08 11:30:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 140 transitions. [2019-09-08 11:30:36,954 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 140 transitions. Word has length 41 [2019-09-08 11:30:36,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:36,954 INFO L475 AbstractCegarLoop]: Abstraction has 97 states and 140 transitions. [2019-09-08 11:30:36,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:30:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 140 transitions. [2019-09-08 11:30:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-08 11:30:36,956 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:36,957 INFO L399 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] [2019-09-08 11:30:36,957 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:36,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:36,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1976266081, now seen corresponding path program 1 times [2019-09-08 11:30:36,958 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:36,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:36,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:36,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:36,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:37,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:37,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:30:37,066 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:30:37,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:30:37,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:30:37,067 INFO L87 Difference]: Start difference. First operand 97 states and 140 transitions. Second operand 3 states. [2019-09-08 11:30:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:37,118 INFO L93 Difference]: Finished difference Result 229 states and 348 transitions. [2019-09-08 11:30:37,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:30:37,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-08 11:30:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:37,122 INFO L225 Difference]: With dead ends: 229 [2019-09-08 11:30:37,122 INFO L226 Difference]: Without dead ends: 155 [2019-09-08 11:30:37,124 INFO L628 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 [2019-09-08 11:30:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-09-08 11:30:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2019-09-08 11:30:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-08 11:30:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 228 transitions. [2019-09-08 11:30:37,158 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 228 transitions. Word has length 42 [2019-09-08 11:30:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:37,159 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 228 transitions. [2019-09-08 11:30:37,160 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:30:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 228 transitions. [2019-09-08 11:30:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 11:30:37,162 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:37,162 INFO L399 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] [2019-09-08 11:30:37,163 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:37,163 INFO L82 PathProgramCache]: Analyzing trace with hash -356684214, now seen corresponding path program 1 times [2019-09-08 11:30:37,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:37,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:37,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:37,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:37,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:37,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:37,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:30:37,334 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:30:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:30:37,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:30:37,335 INFO L87 Difference]: Start difference. First operand 153 states and 228 transitions. Second operand 5 states. [2019-09-08 11:30:37,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:37,642 INFO L93 Difference]: Finished difference Result 413 states and 638 transitions. [2019-09-08 11:30:37,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:30:37,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-08 11:30:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:37,654 INFO L225 Difference]: With dead ends: 413 [2019-09-08 11:30:37,654 INFO L226 Difference]: Without dead ends: 283 [2019-09-08 11:30:37,659 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 11:30:37,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-09-08 11:30:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2019-09-08 11:30:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2019-09-08 11:30:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 428 transitions. [2019-09-08 11:30:37,726 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 428 transitions. Word has length 43 [2019-09-08 11:30:37,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:37,727 INFO L475 AbstractCegarLoop]: Abstraction has 281 states and 428 transitions. [2019-09-08 11:30:37,727 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:30:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 428 transitions. [2019-09-08 11:30:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 11:30:37,730 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:37,730 INFO L399 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] [2019-09-08 11:30:37,730 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:37,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1803713809, now seen corresponding path program 1 times [2019-09-08 11:30:37,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:37,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:37,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:37,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:37,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:37,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:37,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:30:37,876 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:30:37,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:30:37,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:30:37,877 INFO L87 Difference]: Start difference. First operand 281 states and 428 transitions. Second operand 5 states. [2019-09-08 11:30:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:38,010 INFO L93 Difference]: Finished difference Result 539 states and 833 transitions. [2019-09-08 11:30:38,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:30:38,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-08 11:30:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:38,016 INFO L225 Difference]: With dead ends: 539 [2019-09-08 11:30:38,016 INFO L226 Difference]: Without dead ends: 281 [2019-09-08 11:30:38,024 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 11:30:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2019-09-08 11:30:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2019-09-08 11:30:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2019-09-08 11:30:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 424 transitions. [2019-09-08 11:30:38,084 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 424 transitions. Word has length 43 [2019-09-08 11:30:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:38,087 INFO L475 AbstractCegarLoop]: Abstraction has 281 states and 424 transitions. [2019-09-08 11:30:38,088 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:30:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 424 transitions. [2019-09-08 11:30:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 11:30:38,092 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:38,092 INFO L399 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] [2019-09-08 11:30:38,093 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash 649222954, now seen corresponding path program 1 times [2019-09-08 11:30:38,093 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:38,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:38,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:38,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:38,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:38,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:38,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:30:38,203 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:30:38,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:30:38,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:30:38,204 INFO L87 Difference]: Start difference. First operand 281 states and 424 transitions. Second operand 5 states. [2019-09-08 11:30:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:38,376 INFO L93 Difference]: Finished difference Result 1313 states and 2028 transitions. [2019-09-08 11:30:38,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:30:38,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-08 11:30:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:38,384 INFO L225 Difference]: With dead ends: 1313 [2019-09-08 11:30:38,386 INFO L226 Difference]: Without dead ends: 1055 [2019-09-08 11:30:38,388 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:30:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2019-09-08 11:30:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 793. [2019-09-08 11:30:38,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2019-09-08 11:30:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1208 transitions. [2019-09-08 11:30:38,469 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1208 transitions. Word has length 43 [2019-09-08 11:30:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:38,470 INFO L475 AbstractCegarLoop]: Abstraction has 793 states and 1208 transitions. [2019-09-08 11:30:38,470 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:30:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1208 transitions. [2019-09-08 11:30:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-08 11:30:38,476 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:38,476 INFO L399 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] [2019-09-08 11:30:38,476 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:38,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:38,477 INFO L82 PathProgramCache]: Analyzing trace with hash 239806853, now seen corresponding path program 1 times [2019-09-08 11:30:38,477 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:38,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:38,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:38,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:38,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:38,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:38,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:30:38,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:30:38,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:30:38,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:30:38,584 INFO L87 Difference]: Start difference. First operand 793 states and 1208 transitions. Second operand 3 states. [2019-09-08 11:30:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:38,688 INFO L93 Difference]: Finished difference Result 1885 states and 2868 transitions. [2019-09-08 11:30:38,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:30:38,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-09-08 11:30:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:38,696 INFO L225 Difference]: With dead ends: 1885 [2019-09-08 11:30:38,696 INFO L226 Difference]: Without dead ends: 1115 [2019-09-08 11:30:38,698 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:30:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2019-09-08 11:30:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1101. [2019-09-08 11:30:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2019-09-08 11:30:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1638 transitions. [2019-09-08 11:30:38,780 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1638 transitions. Word has length 45 [2019-09-08 11:30:38,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:38,781 INFO L475 AbstractCegarLoop]: Abstraction has 1101 states and 1638 transitions. [2019-09-08 11:30:38,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:30:38,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1638 transitions. [2019-09-08 11:30:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-08 11:30:38,782 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:38,782 INFO L399 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] [2019-09-08 11:30:38,782 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:38,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:38,783 INFO L82 PathProgramCache]: Analyzing trace with hash 259856196, now seen corresponding path program 1 times [2019-09-08 11:30:38,783 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:38,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:38,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:38,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:38,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:38,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:38,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:30:38,968 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:30:38,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:30:38,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:30:38,970 INFO L87 Difference]: Start difference. First operand 1101 states and 1638 transitions. Second operand 5 states. [2019-09-08 11:30:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:39,161 INFO L93 Difference]: Finished difference Result 2899 states and 4323 transitions. [2019-09-08 11:30:39,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:30:39,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-09-08 11:30:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:39,173 INFO L225 Difference]: With dead ends: 2899 [2019-09-08 11:30:39,174 INFO L226 Difference]: Without dead ends: 1821 [2019-09-08 11:30:39,178 INFO L628 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 [2019-09-08 11:30:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2019-09-08 11:30:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1461. [2019-09-08 11:30:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2019-09-08 11:30:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 2152 transitions. [2019-09-08 11:30:39,336 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 2152 transitions. Word has length 45 [2019-09-08 11:30:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:39,336 INFO L475 AbstractCegarLoop]: Abstraction has 1461 states and 2152 transitions. [2019-09-08 11:30:39,337 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:30:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 2152 transitions. [2019-09-08 11:30:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-08 11:30:39,337 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:39,338 INFO L399 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] [2019-09-08 11:30:39,338 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:39,338 INFO L82 PathProgramCache]: Analyzing trace with hash -536301941, now seen corresponding path program 1 times [2019-09-08 11:30:39,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:39,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:39,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:39,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:39,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:39,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:39,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:30:39,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:30:39,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:30:39,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:30:39,480 INFO L87 Difference]: Start difference. First operand 1461 states and 2152 transitions. Second operand 5 states. [2019-09-08 11:30:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:39,716 INFO L93 Difference]: Finished difference Result 2812 states and 4127 transitions. [2019-09-08 11:30:39,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:30:39,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-09-08 11:30:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:39,733 INFO L225 Difference]: With dead ends: 2812 [2019-09-08 11:30:39,733 INFO L226 Difference]: Without dead ends: 2810 [2019-09-08 11:30:39,735 INFO L628 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 [2019-09-08 11:30:39,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2019-09-08 11:30:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1541. [2019-09-08 11:30:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2019-09-08 11:30:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2228 transitions. [2019-09-08 11:30:39,908 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2228 transitions. Word has length 46 [2019-09-08 11:30:39,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:39,909 INFO L475 AbstractCegarLoop]: Abstraction has 1541 states and 2228 transitions. [2019-09-08 11:30:39,909 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:30:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2228 transitions. [2019-09-08 11:30:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-08 11:30:39,910 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:39,911 INFO L399 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] [2019-09-08 11:30:39,911 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:39,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash -121732072, now seen corresponding path program 1 times [2019-09-08 11:30:39,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:39,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:39,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:39,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:39,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:39,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:39,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:30:39,977 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:30:39,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:30:39,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:30:39,977 INFO L87 Difference]: Start difference. First operand 1541 states and 2228 transitions. Second operand 3 states. [2019-09-08 11:30:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:40,174 INFO L93 Difference]: Finished difference Result 3404 states and 4986 transitions. [2019-09-08 11:30:40,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:30:40,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-09-08 11:30:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:40,189 INFO L225 Difference]: With dead ends: 3404 [2019-09-08 11:30:40,189 INFO L226 Difference]: Without dead ends: 2313 [2019-09-08 11:30:40,194 INFO L628 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 [2019-09-08 11:30:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2019-09-08 11:30:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2311. [2019-09-08 11:30:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2019-09-08 11:30:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3326 transitions. [2019-09-08 11:30:40,445 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3326 transitions. Word has length 46 [2019-09-08 11:30:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:40,446 INFO L475 AbstractCegarLoop]: Abstraction has 2311 states and 3326 transitions. [2019-09-08 11:30:40,446 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:30:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3326 transitions. [2019-09-08 11:30:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 11:30:40,448 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:40,449 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:30:40,449 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:40,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1242266490, now seen corresponding path program 1 times [2019-09-08 11:30:40,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:40,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:40,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:40,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:40,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:40,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:30:40,577 INFO L223 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 [2019-09-08 11:30:40,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:40,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 11:30:40,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:30:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 11:30:40,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 11:30:40,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 11:30:40,874 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 11:30:40,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 11:30:40,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-08 11:30:40,877 INFO L87 Difference]: Start difference. First operand 2311 states and 3326 transitions. Second operand 8 states. [2019-09-08 11:30:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:41,582 INFO L93 Difference]: Finished difference Result 6575 states and 9644 transitions. [2019-09-08 11:30:41,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 11:30:41,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2019-09-08 11:30:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:41,618 INFO L225 Difference]: With dead ends: 6575 [2019-09-08 11:30:41,619 INFO L226 Difference]: Without dead ends: 4857 [2019-09-08 11:30:41,627 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2019-09-08 11:30:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2019-09-08 11:30:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 3451. [2019-09-08 11:30:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3451 states. [2019-09-08 11:30:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 4982 transitions. [2019-09-08 11:30:42,061 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 4982 transitions. Word has length 65 [2019-09-08 11:30:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:42,062 INFO L475 AbstractCegarLoop]: Abstraction has 3451 states and 4982 transitions. [2019-09-08 11:30:42,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 11:30:42,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 4982 transitions. [2019-09-08 11:30:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 11:30:42,063 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:42,064 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:30:42,064 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:42,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1266011712, now seen corresponding path program 1 times [2019-09-08 11:30:42,065 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:42,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:42,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:42,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:42,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 11:30:42,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:42,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:30:42,200 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:30:42,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:30:42,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:30:42,201 INFO L87 Difference]: Start difference. First operand 3451 states and 4982 transitions. Second operand 5 states. [2019-09-08 11:30:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:42,898 INFO L93 Difference]: Finished difference Result 7707 states and 11296 transitions. [2019-09-08 11:30:42,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:30:42,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-09-08 11:30:42,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:42,939 INFO L225 Difference]: With dead ends: 7707 [2019-09-08 11:30:42,939 INFO L226 Difference]: Without dead ends: 5989 [2019-09-08 11:30:42,946 INFO L628 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 [2019-09-08 11:30:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2019-09-08 11:30:43,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 4591. [2019-09-08 11:30:43,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4591 states. [2019-09-08 11:30:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 6638 transitions. [2019-09-08 11:30:43,385 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 6638 transitions. Word has length 65 [2019-09-08 11:30:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:43,385 INFO L475 AbstractCegarLoop]: Abstraction has 4591 states and 6638 transitions. [2019-09-08 11:30:43,386 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:30:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 6638 transitions. [2019-09-08 11:30:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 11:30:43,387 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:43,388 INFO L399 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] [2019-09-08 11:30:43,388 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:43,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1874787643, now seen corresponding path program 1 times [2019-09-08 11:30:43,389 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:43,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:43,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:43,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:43,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 11:30:43,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:43,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:30:43,463 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:30:43,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:30:43,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:30:43,464 INFO L87 Difference]: Start difference. First operand 4591 states and 6638 transitions. Second operand 5 states. [2019-09-08 11:30:44,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:44,257 INFO L93 Difference]: Finished difference Result 8311 states and 12210 transitions. [2019-09-08 11:30:44,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:30:44,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-09-08 11:30:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:44,297 INFO L225 Difference]: With dead ends: 8311 [2019-09-08 11:30:44,298 INFO L226 Difference]: Without dead ends: 6917 [2019-09-08 11:30:44,305 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 11:30:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6917 states. [2019-09-08 11:30:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6917 to 5519. [2019-09-08 11:30:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5519 states. [2019-09-08 11:30:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 8006 transitions. [2019-09-08 11:30:44,895 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 8006 transitions. Word has length 66 [2019-09-08 11:30:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:44,896 INFO L475 AbstractCegarLoop]: Abstraction has 5519 states and 8006 transitions. [2019-09-08 11:30:44,896 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:30:44,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 8006 transitions. [2019-09-08 11:30:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-08 11:30:44,898 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:44,898 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:30:44,898 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:44,899 INFO L82 PathProgramCache]: Analyzing trace with hash -690333280, now seen corresponding path program 1 times [2019-09-08 11:30:44,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:44,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:44,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:44,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:44,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:44,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:30:44,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:30:44,958 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:30:44,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:30:44,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:30:44,958 INFO L87 Difference]: Start difference. First operand 5519 states and 8006 transitions. Second operand 3 states. [2019-09-08 11:30:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:45,415 INFO L93 Difference]: Finished difference Result 10189 states and 14863 transitions. [2019-09-08 11:30:45,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:30:45,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-08 11:30:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:45,430 INFO L225 Difference]: With dead ends: 10189 [2019-09-08 11:30:45,431 INFO L226 Difference]: Without dead ends: 4695 [2019-09-08 11:30:45,446 INFO L628 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 [2019-09-08 11:30:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2019-09-08 11:30:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4693. [2019-09-08 11:30:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2019-09-08 11:30:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 6800 transitions. [2019-09-08 11:30:45,924 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 6800 transitions. Word has length 67 [2019-09-08 11:30:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:45,924 INFO L475 AbstractCegarLoop]: Abstraction has 4693 states and 6800 transitions. [2019-09-08 11:30:45,924 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:30:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 6800 transitions. [2019-09-08 11:30:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-08 11:30:45,926 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:45,926 INFO L399 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, 1] [2019-09-08 11:30:45,927 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:45,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1463051867, now seen corresponding path program 1 times [2019-09-08 11:30:45,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:45,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:45,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:45,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:45,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:46,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:30:46,138 INFO L223 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 [2019-09-08 11:30:46,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:46,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 11:30:46,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:30:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 11:30:46,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:30:46,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-09-08 11:30:46,383 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 11:30:46,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 11:30:46,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-09-08 11:30:46,385 INFO L87 Difference]: Start difference. First operand 4693 states and 6800 transitions. Second operand 12 states. [2019-09-08 11:30:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:30:52,328 INFO L93 Difference]: Finished difference Result 38138 states and 54150 transitions. [2019-09-08 11:30:52,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-08 11:30:52,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2019-09-08 11:30:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:30:52,404 INFO L225 Difference]: With dead ends: 38138 [2019-09-08 11:30:52,405 INFO L226 Difference]: Without dead ends: 33484 [2019-09-08 11:30:52,425 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=770, Invalid=3262, Unknown=0, NotChecked=0, Total=4032 [2019-09-08 11:30:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33484 states. [2019-09-08 11:30:54,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33484 to 12822. [2019-09-08 11:30:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12822 states. [2019-09-08 11:30:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12822 states to 12822 states and 17830 transitions. [2019-09-08 11:30:54,765 INFO L78 Accepts]: Start accepts. Automaton has 12822 states and 17830 transitions. Word has length 67 [2019-09-08 11:30:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:30:54,765 INFO L475 AbstractCegarLoop]: Abstraction has 12822 states and 17830 transitions. [2019-09-08 11:30:54,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 11:30:54,766 INFO L276 IsEmpty]: Start isEmpty. Operand 12822 states and 17830 transitions. [2019-09-08 11:30:54,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 11:30:54,767 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:30:54,767 INFO L399 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] [2019-09-08 11:30:54,767 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:30:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:30:54,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1022906900, now seen corresponding path program 1 times [2019-09-08 11:30:54,767 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:30:54,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:30:54,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:54,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:54,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:30:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:30:54,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:30:54,938 INFO L223 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 [2019-09-08 11:30:54,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:30:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:30:55,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-08 11:30:55,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:30:55,789 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2019-09-08 11:30:55,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:30:55,952 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 (4)] Exception during sending of exit command (exit): Stream closed [2019-09-08 11:30:55,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:30:55,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 21 [2019-09-08 11:30:55,963 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-08 11:30:55,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-08 11:30:55,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2019-09-08 11:30:55,964 INFO L87 Difference]: Start difference. First operand 12822 states and 17830 transitions. Second operand 21 states. [2019-09-08 11:30:56,176 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-08 11:30:57,111 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 11:30:57,294 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 11:30:57,572 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:30:57,857 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:31:01,016 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-08 11:31:01,954 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 11:31:02,312 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:31:02,734 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 11:31:03,035 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 11:31:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:31:08,302 INFO L93 Difference]: Finished difference Result 80419 states and 111538 transitions. [2019-09-08 11:31:08,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-09-08 11:31:08,302 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2019-09-08 11:31:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:31:08,467 INFO L225 Difference]: With dead ends: 80419 [2019-09-08 11:31:08,468 INFO L226 Difference]: Without dead ends: 69632 [2019-09-08 11:31:08,512 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2537 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1434, Invalid=5876, Unknown=0, NotChecked=0, Total=7310 [2019-09-08 11:31:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69632 states. [2019-09-08 11:31:12,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69632 to 30904. [2019-09-08 11:31:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30904 states. [2019-09-08 11:31:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30904 states to 30904 states and 42726 transitions. [2019-09-08 11:31:12,855 INFO L78 Accepts]: Start accepts. Automaton has 30904 states and 42726 transitions. Word has length 68 [2019-09-08 11:31:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:31:12,855 INFO L475 AbstractCegarLoop]: Abstraction has 30904 states and 42726 transitions. [2019-09-08 11:31:12,855 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-08 11:31:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 30904 states and 42726 transitions. [2019-09-08 11:31:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 11:31:12,857 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:31:12,857 INFO L399 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] [2019-09-08 11:31:12,858 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:31:12,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:31:12,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1046652122, now seen corresponding path program 1 times [2019-09-08 11:31:12,858 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:31:12,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:31:12,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:31:12,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:31:12,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:31:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:31:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:31:13,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:31:13,091 INFO L223 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) [2019-09-08 11:31:13,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:31:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:31:13,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 11:31:13,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:31:13,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:31:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:31:13,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:31:13,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-09-08 11:31:13,509 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 11:31:13,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 11:31:13,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-09-08 11:31:13,510 INFO L87 Difference]: Start difference. First operand 30904 states and 42726 transitions. Second operand 17 states. [2019-09-08 11:31:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:31:31,645 INFO L93 Difference]: Finished difference Result 180748 states and 248792 transitions. [2019-09-08 11:31:31,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-08 11:31:31,646 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2019-09-08 11:31:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:31:32,070 INFO L225 Difference]: With dead ends: 180748 [2019-09-08 11:31:32,070 INFO L226 Difference]: Without dead ends: 154520 [2019-09-08 11:31:32,150 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=716, Invalid=2146, Unknown=0, NotChecked=0, Total=2862 [2019-09-08 11:31:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154520 states. [2019-09-08 11:31:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154520 to 71717. [2019-09-08 11:31:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71717 states. [2019-09-08 11:31:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71717 states to 71717 states and 99179 transitions. [2019-09-08 11:31:42,199 INFO L78 Accepts]: Start accepts. Automaton has 71717 states and 99179 transitions. Word has length 68 [2019-09-08 11:31:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:31:42,200 INFO L475 AbstractCegarLoop]: Abstraction has 71717 states and 99179 transitions. [2019-09-08 11:31:42,200 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 11:31:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 71717 states and 99179 transitions. [2019-09-08 11:31:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-08 11:31:42,203 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:31:42,204 INFO L399 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] [2019-09-08 11:31:42,204 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:31:42,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:31:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2040085861, now seen corresponding path program 1 times [2019-09-08 11:31:42,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:31:42,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:31:42,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:31:42,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:31:42,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:31:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:31:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 11:31:42,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:31:42,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:31:42,239 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:31:42,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:31:42,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:31:42,239 INFO L87 Difference]: Start difference. First operand 71717 states and 99179 transitions. Second operand 3 states. [2019-09-08 11:31:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:31:50,074 INFO L93 Difference]: Finished difference Result 130721 states and 181273 transitions. [2019-09-08 11:31:50,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:31:50,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-09-08 11:31:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:31:50,184 INFO L225 Difference]: With dead ends: 130721 [2019-09-08 11:31:50,184 INFO L226 Difference]: Without dead ends: 59237 [2019-09-08 11:31:50,271 INFO L628 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 [2019-09-08 11:31:50,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59237 states. [2019-09-08 11:31:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59237 to 59237. [2019-09-08 11:31:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59237 states. [2019-09-08 11:31:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59237 states to 59237 states and 81224 transitions. [2019-09-08 11:31:56,424 INFO L78 Accepts]: Start accepts. Automaton has 59237 states and 81224 transitions. Word has length 69 [2019-09-08 11:31:56,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:31:56,424 INFO L475 AbstractCegarLoop]: Abstraction has 59237 states and 81224 transitions. [2019-09-08 11:31:56,424 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:31:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 59237 states and 81224 transitions. [2019-09-08 11:31:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-08 11:31:56,428 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:31:56,428 INFO L399 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] [2019-09-08 11:31:56,428 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:31:56,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:31:56,429 INFO L82 PathProgramCache]: Analyzing trace with hash 9977577, now seen corresponding path program 1 times [2019-09-08 11:31:56,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:31:56,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:31:56,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:31:56,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:31:56,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:31:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:31:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:31:57,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:31:57,482 INFO L223 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) [2019-09-08 11:31:57,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:31:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:31:57,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 11:31:57,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:31:57,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:31:58,705 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 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 11:31:58,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:31:58,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2019-09-08 11:31:58,711 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-08 11:31:58,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-08 11:31:58,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2019-09-08 11:31:58,712 INFO L87 Difference]: Start difference. First operand 59237 states and 81224 transitions. Second operand 28 states. [2019-09-08 11:31:59,897 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-08 11:32:00,144 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-08 11:32:00,502 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-08 11:32:00,932 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2019-09-08 11:32:01,111 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-08 11:32:01,370 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2019-09-08 11:32:01,818 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 94 [2019-09-08 11:32:02,164 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2019-09-08 11:32:02,497 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-08 11:32:02,739 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2019-09-08 11:32:03,074 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-08 11:32:03,330 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-08 11:32:03,592 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-08 11:32:03,924 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-08 11:32:04,166 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 11:32:04,508 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2019-09-08 11:32:04,848 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-08 11:32:05,178 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 11:32:05,466 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-08 11:32:05,798 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:32:06,121 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 11:32:06,521 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2019-09-08 11:32:06,973 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 103 [2019-09-08 11:32:07,299 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-08 11:32:07,767 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-08 11:32:08,088 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2019-09-08 11:32:08,491 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 95 [2019-09-08 11:32:08,773 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-08 11:32:09,218 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 99 [2019-09-08 11:32:09,519 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 11:32:09,692 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-08 11:32:09,900 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-08 11:32:10,280 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2019-09-08 11:32:10,691 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-08 11:32:10,940 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2019-09-08 11:32:11,361 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2019-09-08 11:32:11,517 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-08 11:32:11,889 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2019-09-08 11:32:12,095 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 11:32:12,541 WARN L188 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 108 [2019-09-08 11:32:12,798 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-08 11:32:13,394 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2019-09-08 11:32:13,599 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 11:32:14,105 WARN L188 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 112 [2019-09-08 11:32:14,388 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 11:32:14,554 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 11:32:14,779 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-08 11:32:15,054 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-08 11:32:15,633 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-08 11:32:16,174 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 11:32:16,338 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 11:32:16,611 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2019-09-08 11:32:16,969 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 79 [2019-09-08 11:32:17,387 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2019-09-08 11:32:17,839 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 84 [2019-09-08 11:32:18,349 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-08 11:32:18,657 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-08 11:32:19,099 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-08 11:32:19,395 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 11:32:19,601 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2019-09-08 11:32:19,884 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-08 11:32:20,186 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-08 11:32:20,460 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-08 11:32:20,835 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-08 11:32:21,464 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-08 11:32:21,696 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-08 11:32:22,163 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-08 11:32:22,541 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 11:32:22,799 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-08 11:32:23,159 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-08 11:32:23,463 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-08 11:32:23,906 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-08 11:32:24,200 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-08 11:32:24,669 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 11:32:25,045 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-08 11:32:25,372 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 11:32:25,731 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2019-09-08 11:32:26,093 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 11:32:26,494 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-09-08 11:32:26,839 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 11:32:26,983 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-08 11:32:27,153 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-08 11:32:27,757 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2019-09-08 11:32:28,206 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-08 11:32:28,483 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 11:32:28,762 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 11:32:29,183 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2019-09-08 11:32:29,560 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2019-09-08 11:32:29,723 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 11:32:29,974 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 11:32:30,558 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-09-08 11:32:30,996 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-08 11:32:31,167 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-09-08 11:32:31,315 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-08 11:32:31,760 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-09-08 11:32:32,205 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-08 11:32:32,351 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-08 11:32:32,730 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-08 11:32:32,996 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-08 11:32:33,157 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 11:32:33,614 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-08 11:32:34,051 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:32:34,416 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-08 11:32:34,880 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-08 11:32:35,122 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 11:32:35,583 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-09-08 11:32:35,787 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 11:32:36,298 WARN L188 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 94 [2019-09-08 11:32:36,613 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-08 11:32:36,992 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-08 11:32:37,538 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2019-09-08 11:32:37,740 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-08 11:32:38,216 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2019-09-08 11:32:38,668 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2019-09-08 11:32:39,041 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2019-09-08 11:32:39,554 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2019-09-08 11:32:39,890 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-09-08 11:32:40,392 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 11:32:40,930 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 103 [2019-09-08 11:32:41,307 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2019-09-08 11:32:41,807 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 11:32:42,115 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-08 11:32:42,367 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:32:42,532 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:32:42,846 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 11:32:43,270 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-08 11:32:43,507 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-08 11:32:44,064 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-09-08 11:32:44,314 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-08 11:32:44,521 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-08 11:32:44,731 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-08 11:32:45,080 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2019-09-08 11:32:45,359 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-09-08 11:32:45,934 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 11:32:46,563 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 11:32:47,108 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-08 11:32:47,291 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-08 11:32:47,696 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-08 11:32:47,916 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 11:32:48,111 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 11:32:48,510 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-08 11:32:48,787 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-08 11:32:49,254 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 11:32:49,778 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-09-08 11:32:50,090 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-08 11:32:50,331 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:32:50,515 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 11:32:51,010 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2019-09-08 11:32:51,414 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-09-08 11:32:51,588 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 11:32:51,985 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-08 11:32:52,198 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 11:32:52,413 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-08 11:32:52,624 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-08 11:32:53,134 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-08 11:32:53,467 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-08 11:32:53,716 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 11:32:53,883 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 11:32:54,122 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-08 11:32:54,304 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:32:54,641 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 11:32:55,031 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2019-09-08 11:32:55,256 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 11:32:55,759 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 11:32:55,949 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-08 11:32:56,526 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-08 11:32:56,893 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2019-09-08 11:32:57,086 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 11:32:57,280 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-08 11:32:57,569 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2019-09-08 11:32:57,917 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-08 11:32:58,475 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 11:32:58,834 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2019-09-08 11:32:59,174 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2019-09-08 11:32:59,630 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 109 [2019-09-08 11:32:59,876 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-08 11:33:00,049 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-08 11:33:00,231 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 11:33:00,506 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 11:33:00,692 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-08 11:33:01,258 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-08 11:33:01,643 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 11:33:02,046 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2019-09-08 11:33:02,467 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2019-09-08 11:33:02,705 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 11:33:03,189 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2019-09-08 11:33:03,345 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 11:33:03,487 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 11:33:03,667 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-08 11:33:03,829 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 11:33:04,168 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2019-09-08 11:33:04,578 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2019-09-08 11:33:04,921 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2019-09-08 11:33:05,403 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2019-09-08 11:33:05,648 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-08 11:33:06,039 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 11:33:06,205 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-08 11:33:06,370 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-08 11:33:06,544 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 11:33:06,697 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 11:33:07,026 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 11:33:07,638 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 102 [2019-09-08 11:33:08,146 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 11:33:08,302 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 11:33:09,618 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 103 [2019-09-08 11:33:10,023 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 99 [2019-09-08 11:33:12,048 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-08 11:33:12,319 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-08 11:33:14,345 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:33:16,374 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-08 11:33:16,843 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 11:33:17,210 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 11:33:17,625 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-08 11:33:18,275 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-08 11:33:18,451 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 11:33:18,624 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-08 11:33:19,226 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 11:33:19,999 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-08 11:33:20,738 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-08 11:33:21,396 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2019-09-08 11:33:21,732 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-08 11:33:22,524 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2019-09-08 11:33:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:33:33,657 INFO L93 Difference]: Finished difference Result 185426 states and 253876 transitions. [2019-09-08 11:33:33,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2019-09-08 11:33:33,657 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 69 [2019-09-08 11:33:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:33:33,857 INFO L225 Difference]: With dead ends: 185426 [2019-09-08 11:33:33,857 INFO L226 Difference]: Without dead ends: 146152 [2019-09-08 11:33:33,939 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 52 SyntacticMatches, 10 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47619 ImplicationChecksByTransitivity, 67.1s TimeCoverageRelationStatistics Valid=12604, Invalid=96626, Unknown=0, NotChecked=0, Total=109230 [2019-09-08 11:33:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146152 states. [2019-09-08 11:33:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146152 to 57532. [2019-09-08 11:33:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57532 states. [2019-09-08 11:33:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57532 states to 57532 states and 79363 transitions. [2019-09-08 11:33:45,170 INFO L78 Accepts]: Start accepts. Automaton has 57532 states and 79363 transitions. Word has length 69 [2019-09-08 11:33:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:33:45,170 INFO L475 AbstractCegarLoop]: Abstraction has 57532 states and 79363 transitions. [2019-09-08 11:33:45,170 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-08 11:33:45,170 INFO L276 IsEmpty]: Start isEmpty. Operand 57532 states and 79363 transitions. [2019-09-08 11:33:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 11:33:45,173 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:33:45,173 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:33:45,173 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:33:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:33:45,174 INFO L82 PathProgramCache]: Analyzing trace with hash -337527698, now seen corresponding path program 1 times [2019-09-08 11:33:45,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:33:45,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:33:45,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:33:45,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:33:45,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:33:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:33:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:33:45,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:33:45,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:33:45,231 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:33:45,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:33:45,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:33:45,231 INFO L87 Difference]: Start difference. First operand 57532 states and 79363 transitions. Second operand 3 states. [2019-09-08 11:33:49,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:33:49,742 INFO L93 Difference]: Finished difference Result 85856 states and 118903 transitions. [2019-09-08 11:33:49,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:33:49,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-08 11:33:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:33:49,781 INFO L225 Difference]: With dead ends: 85856 [2019-09-08 11:33:49,781 INFO L226 Difference]: Without dead ends: 31756 [2019-09-08 11:33:49,817 INFO L628 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 [2019-09-08 11:33:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31756 states. [2019-09-08 11:33:54,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31756 to 31754. [2019-09-08 11:33:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31754 states. [2019-09-08 11:33:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31754 states to 31754 states and 42771 transitions. [2019-09-08 11:33:54,503 INFO L78 Accepts]: Start accepts. Automaton has 31754 states and 42771 transitions. Word has length 70 [2019-09-08 11:33:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:33:54,503 INFO L475 AbstractCegarLoop]: Abstraction has 31754 states and 42771 transitions. [2019-09-08 11:33:54,503 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:33:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 31754 states and 42771 transitions. [2019-09-08 11:33:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 11:33:54,504 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:33:54,504 INFO L399 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, 1, 1, 1, 1] [2019-09-08 11:33:54,505 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:33:54,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:33:54,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1576866514, now seen corresponding path program 1 times [2019-09-08 11:33:54,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:33:54,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:33:54,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:33:54,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:33:54,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:33:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:33:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:33:55,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:33:55,035 INFO L223 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) [2019-09-08 11:33:55,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:33:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:33:55,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-08 11:33:55,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:33:55,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:33:55,909 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-09-08 11:33:55,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 11:33:56,750 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2019-09-08 11:33:56,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 11:33:57,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:33:57,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:33:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:33:58,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:33:58,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 39 [2019-09-08 11:33:58,053 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-08 11:33:58,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-08 11:33:58,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 11:33:58,054 INFO L87 Difference]: Start difference. First operand 31754 states and 42771 transitions. Second operand 39 states. [2019-09-08 11:33:58,634 WARN L188 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 93 [2019-09-08 11:33:59,710 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2019-09-08 11:34:00,060 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2019-09-08 11:34:00,399 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-08 11:34:00,748 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-09-08 11:34:01,188 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 11:34:01,503 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 11:34:01,851 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2019-09-08 11:34:02,158 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-09-08 11:34:02,615 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-08 11:34:03,222 WARN L188 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-08 11:34:03,538 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-08 11:34:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:34:12,058 INFO L93 Difference]: Finished difference Result 50223 states and 68139 transitions. [2019-09-08 11:34:12,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-09-08 11:34:12,059 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 70 [2019-09-08 11:34:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:34:12,110 INFO L225 Difference]: With dead ends: 50223 [2019-09-08 11:34:12,110 INFO L226 Difference]: Without dead ends: 44774 [2019-09-08 11:34:12,124 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=563, Invalid=3097, Unknown=0, NotChecked=0, Total=3660 [2019-09-08 11:34:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44774 states. [2019-09-08 11:34:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44774 to 31916. [2019-09-08 11:34:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31916 states. [2019-09-08 11:34:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31916 states to 31916 states and 42983 transitions. [2019-09-08 11:34:16,672 INFO L78 Accepts]: Start accepts. Automaton has 31916 states and 42983 transitions. Word has length 70 [2019-09-08 11:34:16,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:34:16,672 INFO L475 AbstractCegarLoop]: Abstraction has 31916 states and 42983 transitions. [2019-09-08 11:34:16,673 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-08 11:34:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 31916 states and 42983 transitions. [2019-09-08 11:34:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 11:34:16,675 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:34:16,675 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:34:16,675 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:34:16,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:34:16,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1191255918, now seen corresponding path program 1 times [2019-09-08 11:34:16,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:34:16,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:34:16,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:16,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:34:16,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:34:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:34:16,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:34:16,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:34:16,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:34:16,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:34:16,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:34:16,726 INFO L87 Difference]: Start difference. First operand 31916 states and 42983 transitions. Second operand 3 states. [2019-09-08 11:34:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:34:19,243 INFO L93 Difference]: Finished difference Result 46496 states and 62701 transitions. [2019-09-08 11:34:19,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:34:19,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-08 11:34:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:34:19,263 INFO L225 Difference]: With dead ends: 46496 [2019-09-08 11:34:19,263 INFO L226 Difference]: Without dead ends: 16258 [2019-09-08 11:34:19,287 INFO L628 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 [2019-09-08 11:34:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16258 states. [2019-09-08 11:34:21,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16258 to 16256. [2019-09-08 11:34:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16256 states. [2019-09-08 11:34:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16256 states to 16256 states and 21395 transitions. [2019-09-08 11:34:21,554 INFO L78 Accepts]: Start accepts. Automaton has 16256 states and 21395 transitions. Word has length 70 [2019-09-08 11:34:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:34:21,554 INFO L475 AbstractCegarLoop]: Abstraction has 16256 states and 21395 transitions. [2019-09-08 11:34:21,554 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:34:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 16256 states and 21395 transitions. [2019-09-08 11:34:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 11:34:21,556 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:34:21,556 INFO L399 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, 1, 1, 1, 1] [2019-09-08 11:34:21,556 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:34:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:34:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1734312840, now seen corresponding path program 1 times [2019-09-08 11:34:21,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:34:21,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:34:21,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:21,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:34:21,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:34:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 11:34:21,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:34:21,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:34:21,586 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:34:21,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:34:21,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:34:21,586 INFO L87 Difference]: Start difference. First operand 16256 states and 21395 transitions. Second operand 3 states. [2019-09-08 11:34:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:34:23,381 INFO L93 Difference]: Finished difference Result 26631 states and 35249 transitions. [2019-09-08 11:34:23,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:34:23,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-08 11:34:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:34:23,396 INFO L225 Difference]: With dead ends: 26631 [2019-09-08 11:34:23,396 INFO L226 Difference]: Without dead ends: 10657 [2019-09-08 11:34:23,406 INFO L628 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 [2019-09-08 11:34:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10657 states. [2019-09-08 11:34:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10657 to 10657. [2019-09-08 11:34:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10657 states. [2019-09-08 11:34:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10657 states to 10657 states and 14002 transitions. [2019-09-08 11:34:24,791 INFO L78 Accepts]: Start accepts. Automaton has 10657 states and 14002 transitions. Word has length 70 [2019-09-08 11:34:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:34:24,792 INFO L475 AbstractCegarLoop]: Abstraction has 10657 states and 14002 transitions. [2019-09-08 11:34:24,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:34:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10657 states and 14002 transitions. [2019-09-08 11:34:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-08 11:34:24,792 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:34:24,793 INFO L399 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, 1, 1, 1, 1, 1] [2019-09-08 11:34:24,793 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:34:24,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:34:24,793 INFO L82 PathProgramCache]: Analyzing trace with hash 430720802, now seen corresponding path program 1 times [2019-09-08 11:34:24,793 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:34:24,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:34:24,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:24,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:34:24,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:34:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:34:25,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:34:25,238 INFO L223 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 [2019-09-08 11:34:25,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:34:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:34:25,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 32 conjunts are in the unsatisfiable core [2019-09-08 11:34:25,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:34:25,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:34:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:34:25,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:34:25,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2019-09-08 11:34:25,992 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 11:34:25,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 11:34:25,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2019-09-08 11:34:25,993 INFO L87 Difference]: Start difference. First operand 10657 states and 14002 transitions. Second operand 26 states. [2019-09-08 11:34:26,705 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 11:34:26,878 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 11:34:27,069 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 11:34:27,265 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 11:34:27,398 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2019-09-08 11:34:27,783 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2019-09-08 11:34:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:34:31,884 INFO L93 Difference]: Finished difference Result 24844 states and 32755 transitions. [2019-09-08 11:34:31,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-09-08 11:34:31,885 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 71 [2019-09-08 11:34:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:34:31,909 INFO L225 Difference]: With dead ends: 24844 [2019-09-08 11:34:31,909 INFO L226 Difference]: Without dead ends: 19328 [2019-09-08 11:34:32,013 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=492, Invalid=1764, Unknown=0, NotChecked=0, Total=2256 [2019-09-08 11:34:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19328 states. [2019-09-08 11:34:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19328 to 10449. [2019-09-08 11:34:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10449 states. [2019-09-08 11:34:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10449 states to 10449 states and 13729 transitions. [2019-09-08 11:34:33,536 INFO L78 Accepts]: Start accepts. Automaton has 10449 states and 13729 transitions. Word has length 71 [2019-09-08 11:34:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:34:33,537 INFO L475 AbstractCegarLoop]: Abstraction has 10449 states and 13729 transitions. [2019-09-08 11:34:33,537 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 11:34:33,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10449 states and 13729 transitions. [2019-09-08 11:34:33,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-08 11:34:33,538 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:34:33,538 INFO L399 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, 1, 1, 1, 1, 1] [2019-09-08 11:34:33,539 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:34:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:34:33,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1092966912, now seen corresponding path program 1 times [2019-09-08 11:34:33,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:34:33,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:34:33,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:33,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:34:33,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:34:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 11:34:33,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:34:33,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:34:33,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:34:33,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:34:33,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:34:33,586 INFO L87 Difference]: Start difference. First operand 10449 states and 13729 transitions. Second operand 3 states. [2019-09-08 11:34:34,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:34:34,543 INFO L93 Difference]: Finished difference Result 15458 states and 20372 transitions. [2019-09-08 11:34:34,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:34:34,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-09-08 11:34:34,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:34:34,549 INFO L225 Difference]: With dead ends: 15458 [2019-09-08 11:34:34,549 INFO L226 Difference]: Without dead ends: 5071 [2019-09-08 11:34:34,558 INFO L628 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 [2019-09-08 11:34:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2019-09-08 11:34:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 4950. [2019-09-08 11:34:35,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4950 states. [2019-09-08 11:34:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 6497 transitions. [2019-09-08 11:34:35,339 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 6497 transitions. Word has length 71 [2019-09-08 11:34:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:34:35,340 INFO L475 AbstractCegarLoop]: Abstraction has 4950 states and 6497 transitions. [2019-09-08 11:34:35,340 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:34:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 6497 transitions. [2019-09-08 11:34:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-08 11:34:35,343 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:34:35,343 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:34:35,343 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:34:35,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:34:35,344 INFO L82 PathProgramCache]: Analyzing trace with hash 867437734, now seen corresponding path program 1 times [2019-09-08 11:34:35,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:34:35,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:34:35,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:35,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:34:35,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:34:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 11:34:35,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:34:35,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 11:34:35,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 11:34:35,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 11:34:35,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 11:34:35,396 INFO L87 Difference]: Start difference. First operand 4950 states and 6497 transitions. Second operand 4 states. [2019-09-08 11:34:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:34:36,342 INFO L93 Difference]: Finished difference Result 9459 states and 12621 transitions. [2019-09-08 11:34:36,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 11:34:36,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-09-08 11:34:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:34:36,349 INFO L225 Difference]: With dead ends: 9459 [2019-09-08 11:34:36,349 INFO L226 Difference]: Without dead ends: 6089 [2019-09-08 11:34:36,353 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:34:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2019-09-08 11:34:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 3363. [2019-09-08 11:34:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2019-09-08 11:34:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4354 transitions. [2019-09-08 11:34:36,936 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4354 transitions. Word has length 114 [2019-09-08 11:34:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:34:36,937 INFO L475 AbstractCegarLoop]: Abstraction has 3363 states and 4354 transitions. [2019-09-08 11:34:36,937 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 11:34:36,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4354 transitions. [2019-09-08 11:34:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-08 11:34:36,939 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:34:36,939 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:34:36,939 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:34:36,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:34:36,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1768308149, now seen corresponding path program 1 times [2019-09-08 11:34:36,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:34:36,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:34:36,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:36,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:34:36,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:34:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:34:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:34:37,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:34:37,589 INFO L223 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 [2019-09-08 11:34:37,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:34:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:34:37,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 11:34:37,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:34:37,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:34:38,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:34:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 39 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:34:38,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:34:38,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 26 [2019-09-08 11:34:38,431 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 11:34:38,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 11:34:38,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2019-09-08 11:34:38,434 INFO L87 Difference]: Start difference. First operand 3363 states and 4354 transitions. Second operand 26 states. [2019-09-08 11:34:38,692 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-08 11:34:39,516 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 11:34:39,929 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 11:34:40,199 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-08 11:34:40,549 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-09-08 11:34:41,120 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2019-09-08 11:34:42,506 WARN L188 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2019-09-08 11:34:42,988 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2019-09-08 11:34:43,323 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2019-09-08 11:34:43,710 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2019-09-08 11:34:44,144 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 100 [2019-09-08 11:34:44,653 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2019-09-08 11:34:45,000 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2019-09-08 11:34:45,391 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2019-09-08 11:34:45,731 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2019-09-08 11:34:46,140 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2019-09-08 11:34:46,553 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2019-09-08 11:34:47,244 WARN L188 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2019-09-08 11:34:47,750 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-08 11:34:48,156 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-09-08 11:34:48,484 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-08 11:34:48,831 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-09-08 11:34:49,158 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 11:34:49,787 WARN L188 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-08 11:34:50,743 WARN L188 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 11:34:51,082 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 11:34:51,462 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-08 11:34:51,876 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-08 11:34:52,168 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 11:34:53,077 WARN L188 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 11:34:53,459 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-08 11:34:53,874 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-08 11:34:54,286 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-08 11:34:54,619 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-09-08 11:34:55,098 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2019-09-08 11:34:55,458 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-08 11:34:55,734 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 11:34:56,102 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-08 11:34:56,372 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-08 11:34:56,757 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 11:34:57,241 WARN L188 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-08 11:34:57,768 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 11:34:58,167 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-08 11:34:58,711 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-08 11:34:59,196 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-09-08 11:34:59,693 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-08 11:35:00,011 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-08 11:35:00,556 WARN L188 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 11:35:01,038 WARN L188 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-09-08 11:35:01,472 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-08 11:35:02,017 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 11:35:02,234 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-08 11:35:02,565 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-08 11:35:02,878 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-08 11:35:03,542 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-08 11:35:04,038 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-08 11:35:04,398 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2019-09-08 11:35:05,064 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 11:35:05,400 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-08 11:35:05,803 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-08 11:35:06,471 WARN L188 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-08 11:35:06,851 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-08 11:35:07,201 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 11:35:07,760 WARN L188 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-08 11:35:08,105 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 11:35:08,342 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 11:35:08,860 WARN L188 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-08 11:35:09,283 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-08 11:35:09,655 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2019-09-08 11:35:09,928 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-08 11:35:10,401 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 11:35:10,898 WARN L188 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 11:35:11,287 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-08 11:35:12,348 WARN L188 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:35:12,679 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 11:35:13,077 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-08 11:35:13,350 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:35:13,804 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-08 11:35:14,237 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:35:16,317 WARN L188 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-08 11:35:16,613 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-08 11:35:16,968 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-08 11:35:17,389 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-08 11:35:17,841 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-08 11:35:18,233 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-08 11:35:18,696 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-08 11:35:19,351 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-08 11:35:19,887 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-08 11:35:20,282 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 11:35:20,655 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-08 11:35:21,384 WARN L188 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 11:35:21,869 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-09-08 11:35:22,231 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-08 11:35:23,619 WARN L188 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 11:35:25,558 WARN L188 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-08 11:35:25,977 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-08 11:35:26,255 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-08 11:35:26,776 WARN L188 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-08 11:35:27,210 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-08 11:35:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:35:27,521 INFO L93 Difference]: Finished difference Result 10001 states and 13140 transitions. [2019-09-08 11:35:27,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2019-09-08 11:35:27,522 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 114 [2019-09-08 11:35:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:35:27,529 INFO L225 Difference]: With dead ends: 10001 [2019-09-08 11:35:27,529 INFO L226 Difference]: Without dead ends: 7123 [2019-09-08 11:35:27,533 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5546 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=2346, Invalid=14424, Unknown=0, NotChecked=0, Total=16770 [2019-09-08 11:35:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2019-09-08 11:35:28,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 2959. [2019-09-08 11:35:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2959 states. [2019-09-08 11:35:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 3777 transitions. [2019-09-08 11:35:28,316 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 3777 transitions. Word has length 114 [2019-09-08 11:35:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:35:28,316 INFO L475 AbstractCegarLoop]: Abstraction has 2959 states and 3777 transitions. [2019-09-08 11:35:28,316 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 11:35:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 3777 transitions. [2019-09-08 11:35:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-08 11:35:28,318 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:35:28,318 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:35:28,318 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:35:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:35:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1884147708, now seen corresponding path program 1 times [2019-09-08 11:35:28,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:35:28,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:35:28,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:35:28,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:35:28,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:35:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:35:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 22 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:35:28,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:35:28,645 INFO L223 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 [2019-09-08 11:35:28,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:35:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:35:28,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 53 conjunts are in the unsatisfiable core [2019-09-08 11:35:28,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:35:28,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:29,691 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-09-08 11:35:29,857 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-08 11:35:31,994 WARN L188 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 52 [2019-09-08 11:35:32,321 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-08 11:35:32,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:32,654 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-08 11:35:32,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:32,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:32,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:33,021 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 11:35:33,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:33,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:33,194 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:34,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:35:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:35:34,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:35:34,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26] total 39 [2019-09-08 11:35:34,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-08 11:35:34,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-08 11:35:34,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1346, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 11:35:34,206 INFO L87 Difference]: Start difference. First operand 2959 states and 3777 transitions. Second operand 39 states. [2019-09-08 11:35:36,211 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-08 11:35:36,584 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-08 11:35:36,940 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-08 11:35:37,197 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-08 11:35:37,569 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2019-09-08 11:35:38,071 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-08 11:35:38,612 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-09-08 11:35:39,269 WARN L188 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2019-09-08 11:35:39,660 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-08 11:35:40,096 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2019-09-08 11:35:40,482 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2019-09-08 11:35:40,957 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2019-09-08 11:35:41,215 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 11:35:41,483 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-08 11:35:42,622 WARN L188 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2019-09-08 11:35:43,019 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2019-09-08 11:35:43,236 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 11:35:43,634 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2019-09-08 11:35:44,117 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2019-09-08 11:35:44,643 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-08 11:35:46,999 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2019-09-08 11:35:47,308 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 11:35:48,029 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-08 11:35:48,271 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2019-09-08 11:35:48,604 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2019-09-08 11:35:49,619 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2019-09-08 11:35:49,896 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2019-09-08 11:35:50,175 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2019-09-08 11:35:51,998 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-08 11:35:52,228 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2019-09-08 11:35:52,420 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 11:35:52,943 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 11:35:53,614 WARN L188 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 88 [2019-09-08 11:35:54,079 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2019-09-08 11:35:54,439 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-08 11:35:54,600 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-08 11:35:54,840 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2019-09-08 11:35:55,858 WARN L188 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2019-09-08 11:35:56,652 WARN L188 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2019-09-08 11:35:56,949 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 11:35:57,363 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-08 11:35:58,058 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2019-09-08 11:35:58,386 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2019-09-08 11:35:59,179 WARN L188 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2019-09-08 11:35:59,793 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2019-09-08 11:36:00,141 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2019-09-08 11:36:00,661 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2019-09-08 11:36:01,112 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2019-09-08 11:36:01,373 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-08 11:36:01,680 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 11:36:02,509 WARN L188 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2019-09-08 11:36:03,597 WARN L188 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 92 [2019-09-08 11:36:03,895 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 11:36:04,472 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2019-09-08 11:36:04,780 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2019-09-08 11:36:05,581 WARN L188 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2019-09-08 11:36:06,270 WARN L188 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2019-09-08 11:36:06,564 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 11:36:07,382 WARN L188 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2019-09-08 11:36:08,641 WARN L188 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 97 [2019-09-08 11:36:09,667 WARN L188 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 109 [2019-09-08 11:36:10,047 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-08 11:36:10,635 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2019-09-08 11:36:13,980 WARN L188 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 106 [2019-09-08 11:36:14,799 WARN L188 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 98 [2019-09-08 11:36:15,380 WARN L188 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-08 11:36:16,555 WARN L188 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 113 [2019-09-08 11:36:17,004 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-08 11:36:19,532 WARN L188 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2019-09-08 11:36:20,785 WARN L188 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 107 [2019-09-08 11:36:21,467 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 11:36:21,885 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2019-09-08 11:36:22,535 WARN L188 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2019-09-08 11:36:23,020 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2019-09-08 11:36:23,952 WARN L188 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2019-09-08 11:36:25,089 WARN L188 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2019-09-08 11:36:26,177 WARN L188 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 109 [2019-09-08 11:36:26,775 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 11:36:27,321 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-08 11:36:27,892 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2019-09-08 11:36:30,529 WARN L188 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2019-09-08 11:36:30,966 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2019-09-08 11:36:31,640 WARN L188 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-09-08 11:36:31,975 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2019-09-08 11:36:32,901 WARN L188 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2019-09-08 11:36:33,354 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2019-09-08 11:36:33,997 WARN L188 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2019-09-08 11:36:34,822 WARN L188 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-08 11:36:35,920 WARN L188 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2019-09-08 11:36:36,453 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-08 11:36:36,743 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 11:36:37,295 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-08 11:36:37,859 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 11:36:38,596 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-08 11:36:39,018 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-08 11:36:39,745 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2019-09-08 11:36:40,742 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2019-09-08 11:36:41,325 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2019-09-08 11:36:43,677 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-08 11:36:45,492 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2019-09-08 11:36:45,915 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-08 11:36:47,148 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 11:36:47,473 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 11:36:48,449 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-08 11:36:48,848 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-08 11:36:49,393 WARN L188 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-08 11:36:49,837 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 11:36:50,955 WARN L188 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2019-09-08 11:36:51,570 WARN L188 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-08 11:36:53,451 WARN L188 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2019-09-08 11:36:55,101 WARN L188 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2019-09-08 11:36:55,244 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2019-09-08 11:36:55,975 WARN L188 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2019-09-08 11:36:57,590 WARN L188 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2019-09-08 11:36:57,858 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 11:37:00,862 WARN L188 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2019-09-08 11:37:01,297 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-08 11:37:06,119 WARN L188 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2019-09-08 11:37:09,309 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 11:37:10,710 WARN L188 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2019-09-08 11:37:11,013 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-08 11:37:13,532 WARN L188 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2019-09-08 11:37:13,950 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-08 11:37:14,742 WARN L188 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-09-08 11:37:16,470 WARN L188 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2019-09-08 11:37:17,474 WARN L188 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2019-09-08 11:37:18,335 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2019-09-08 11:37:18,621 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 11:37:19,790 WARN L188 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 109 [2019-09-08 11:37:20,711 WARN L188 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2019-09-08 11:37:21,396 WARN L188 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2019-09-08 11:37:21,823 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 11:37:22,996 WARN L188 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 118 [2019-09-08 11:37:25,020 WARN L188 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 134 DAG size of output: 117 [2019-09-08 11:37:25,541 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 11:37:26,253 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-08 11:37:27,657 WARN L188 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 146 DAG size of output: 128 [2019-09-08 11:37:29,504 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2019-09-08 11:37:30,009 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-08 11:37:30,630 WARN L188 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-08 11:37:31,186 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-09-08 11:37:32,882 WARN L188 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 145 DAG size of output: 126 [2019-09-08 11:37:33,692 WARN L188 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2019-09-08 11:37:37,675 WARN L188 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 146 DAG size of output: 126 [2019-09-08 11:37:38,692 WARN L188 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-08 11:37:39,099 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-09-08 11:37:39,553 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2019-09-08 11:37:39,998 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-09-08 11:37:40,532 WARN L188 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2019-09-08 11:37:41,347 WARN L188 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2019-09-08 11:37:41,926 WARN L188 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2019-09-08 11:37:42,258 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2019-09-08 11:37:45,583 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-08 11:37:49,433 WARN L188 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-08 11:37:50,968 WARN L188 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2019-09-08 11:37:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:37:55,508 INFO L93 Difference]: Finished difference Result 27687 states and 36476 transitions. [2019-09-08 11:37:55,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2019-09-08 11:37:55,509 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 115 [2019-09-08 11:37:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:37:55,534 INFO L225 Difference]: With dead ends: 27687 [2019-09-08 11:37:55,534 INFO L226 Difference]: Without dead ends: 25450 [2019-09-08 11:37:55,541 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39432 ImplicationChecksByTransitivity, 123.6s TimeCoverageRelationStatistics Valid=9720, Invalid=80576, Unknown=4, NotChecked=0, Total=90300 [2019-09-08 11:37:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25450 states. [2019-09-08 11:37:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25450 to 10644. [2019-09-08 11:37:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10644 states. [2019-09-08 11:37:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10644 states to 10644 states and 13689 transitions. [2019-09-08 11:37:58,791 INFO L78 Accepts]: Start accepts. Automaton has 10644 states and 13689 transitions. Word has length 115 [2019-09-08 11:37:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:37:58,792 INFO L475 AbstractCegarLoop]: Abstraction has 10644 states and 13689 transitions. [2019-09-08 11:37:58,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-08 11:37:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10644 states and 13689 transitions. [2019-09-08 11:37:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 11:37:58,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:37:58,794 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:37:58,795 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:37:58,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:37:58,795 INFO L82 PathProgramCache]: Analyzing trace with hash 989996473, now seen corresponding path program 1 times [2019-09-08 11:37:58,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:37:58,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:37:58,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:58,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:58,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:37:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:37:59,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:37:59,199 INFO L223 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 [2019-09-08 11:37:59,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:37:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:37:59,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 30 conjunts are in the unsatisfiable core [2019-09-08 11:37:59,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:37:59,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:37:59,616 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:37:59,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:00,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:38:00,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:38:00,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2019-09-08 11:38:00,547 INFO L454 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-09-08 11:38:00,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-09-08 11:38:00,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2019-09-08 11:38:00,548 INFO L87 Difference]: Start difference. First operand 10644 states and 13689 transitions. Second operand 33 states. [2019-09-08 11:38:00,707 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-08 11:38:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:38:06,417 INFO L93 Difference]: Finished difference Result 14927 states and 19191 transitions. [2019-09-08 11:38:06,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-08 11:38:06,417 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 116 [2019-09-08 11:38:06,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:38:06,426 INFO L225 Difference]: With dead ends: 14927 [2019-09-08 11:38:06,426 INFO L226 Difference]: Without dead ends: 10847 [2019-09-08 11:38:06,430 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=314, Invalid=2338, Unknown=0, NotChecked=0, Total=2652 [2019-09-08 11:38:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10847 states. [2019-09-08 11:38:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10847 to 10692. [2019-09-08 11:38:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10692 states. [2019-09-08 11:38:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 13738 transitions. [2019-09-08 11:38:09,564 INFO L78 Accepts]: Start accepts. Automaton has 10692 states and 13738 transitions. Word has length 116 [2019-09-08 11:38:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:38:09,565 INFO L475 AbstractCegarLoop]: Abstraction has 10692 states and 13738 transitions. [2019-09-08 11:38:09,565 INFO L476 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-09-08 11:38:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10692 states and 13738 transitions. [2019-09-08 11:38:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 11:38:09,567 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:38:09,567 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:38:09,568 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:38:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:38:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1093305426, now seen corresponding path program 1 times [2019-09-08 11:38:09,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:38:09,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:38:09,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:38:09,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:38:09,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:38:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:38:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:38:10,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:38:10,096 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:38:10,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:38:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:38:10,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 11:38:10,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:38:10,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:10,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:10,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:10,477 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:38:10,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:38:10,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 31 [2019-09-08 11:38:10,680 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-08 11:38:10,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-08 11:38:10,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2019-09-08 11:38:10,680 INFO L87 Difference]: Start difference. First operand 10692 states and 13738 transitions. Second operand 31 states. [2019-09-08 11:38:10,850 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-08 11:38:14,189 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-08 11:38:20,251 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-08 11:38:26,879 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-08 11:38:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:38:29,416 INFO L93 Difference]: Finished difference Result 21445 states and 27554 transitions. [2019-09-08 11:38:29,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2019-09-08 11:38:29,416 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 116 [2019-09-08 11:38:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:38:29,431 INFO L225 Difference]: With dead ends: 21445 [2019-09-08 11:38:29,431 INFO L226 Difference]: Without dead ends: 15219 [2019-09-08 11:38:29,438 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7862 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2691, Invalid=21801, Unknown=0, NotChecked=0, Total=24492 [2019-09-08 11:38:29,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15219 states. [2019-09-08 11:38:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15219 to 11258. [2019-09-08 11:38:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11258 states. [2019-09-08 11:38:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11258 states to 11258 states and 14415 transitions. [2019-09-08 11:38:32,856 INFO L78 Accepts]: Start accepts. Automaton has 11258 states and 14415 transitions. Word has length 116 [2019-09-08 11:38:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:38:32,856 INFO L475 AbstractCegarLoop]: Abstraction has 11258 states and 14415 transitions. [2019-09-08 11:38:32,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-08 11:38:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 11258 states and 14415 transitions. [2019-09-08 11:38:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 11:38:32,858 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:38:32,858 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:38:32,858 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:38:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:38:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash -65642791, now seen corresponding path program 1 times [2019-09-08 11:38:32,859 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:38:32,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:38:32,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:38:32,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:38:32,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:38:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:38:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 22 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:38:34,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:38:34,007 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:38:34,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:38:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:38:34,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-08 11:38:34,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:38:34,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:34,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:34,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:35,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:38:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:38:35,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:38:35,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17] total 41 [2019-09-08 11:38:35,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-08 11:38:35,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-08 11:38:35,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1528, Unknown=0, NotChecked=0, Total=1640 [2019-09-08 11:38:35,726 INFO L87 Difference]: Start difference. First operand 11258 states and 14415 transitions. Second operand 41 states. [2019-09-08 11:38:36,001 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2019-09-08 11:38:37,311 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2019-09-08 11:38:37,557 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2019-09-08 11:38:37,797 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2019-09-08 11:38:38,045 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2019-09-08 11:38:38,355 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 11:38:38,625 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-08 11:38:38,867 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2019-09-08 11:38:39,163 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-08 11:38:39,411 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-08 11:38:39,798 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-08 11:38:44,318 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-08 11:38:45,129 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:38:45,725 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-08 11:38:46,690 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2019-09-08 11:38:46,907 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-08 11:38:47,376 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-09-08 11:38:47,755 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2019-09-08 11:38:47,962 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2019-09-08 11:38:48,149 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2019-09-08 11:38:48,665 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 11:38:48,863 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-09-08 11:38:49,344 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-08 11:38:50,403 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-08 11:38:51,443 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 11:38:52,862 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 11:38:55,774 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-09-08 11:38:57,442 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-09-08 11:39:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:39:02,958 INFO L93 Difference]: Finished difference Result 23682 states and 30352 transitions. [2019-09-08 11:39:02,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2019-09-08 11:39:02,958 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 116 [2019-09-08 11:39:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:39:02,973 INFO L225 Difference]: With dead ends: 23682 [2019-09-08 11:39:02,974 INFO L226 Difference]: Without dead ends: 15887 [2019-09-08 11:39:02,981 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3235 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=1349, Invalid=12457, Unknown=0, NotChecked=0, Total=13806 [2019-09-08 11:39:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15887 states. [2019-09-08 11:39:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15887 to 11100. [2019-09-08 11:39:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11100 states. [2019-09-08 11:39:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11100 states to 11100 states and 14209 transitions. [2019-09-08 11:39:06,505 INFO L78 Accepts]: Start accepts. Automaton has 11100 states and 14209 transitions. Word has length 116 [2019-09-08 11:39:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:39:06,505 INFO L475 AbstractCegarLoop]: Abstraction has 11100 states and 14209 transitions. [2019-09-08 11:39:06,505 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-08 11:39:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11100 states and 14209 transitions. [2019-09-08 11:39:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 11:39:06,507 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:39:06,507 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:39:06,507 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:39:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:39:06,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1415877822, now seen corresponding path program 1 times [2019-09-08 11:39:06,508 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:39:06,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:39:06,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:06,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:06,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:39:07,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:39:07,134 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:39:07,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:07,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-08 11:39:07,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:39:07,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:07,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:08,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:39:08,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:39:08,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 39 [2019-09-08 11:39:08,570 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-08 11:39:08,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-08 11:39:08,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 11:39:08,570 INFO L87 Difference]: Start difference. First operand 11100 states and 14209 transitions. Second operand 39 states. [2019-09-08 11:39:08,753 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-08 11:39:10,550 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2019-09-08 11:39:10,953 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-08 11:39:17,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:39:17,944 INFO L93 Difference]: Finished difference Result 15890 states and 20275 transitions. [2019-09-08 11:39:17,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 11:39:17,945 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 117 [2019-09-08 11:39:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:39:17,957 INFO L225 Difference]: With dead ends: 15890 [2019-09-08 11:39:17,957 INFO L226 Difference]: Without dead ends: 13297 [2019-09-08 11:39:17,961 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=483, Invalid=3807, Unknown=0, NotChecked=0, Total=4290 [2019-09-08 11:39:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2019-09-08 11:39:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 11111. [2019-09-08 11:39:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11111 states. [2019-09-08 11:39:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11111 states to 11111 states and 14220 transitions. [2019-09-08 11:39:21,511 INFO L78 Accepts]: Start accepts. Automaton has 11111 states and 14220 transitions. Word has length 117 [2019-09-08 11:39:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:39:21,512 INFO L475 AbstractCegarLoop]: Abstraction has 11111 states and 14220 transitions. [2019-09-08 11:39:21,512 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-08 11:39:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 11111 states and 14220 transitions. [2019-09-08 11:39:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 11:39:21,514 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:39:21,514 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:39:21,514 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:39:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:39:21,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1677305982, now seen corresponding path program 1 times [2019-09-08 11:39:21,515 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:39:21,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:39:21,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:21,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:21,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 71 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-08 11:39:21,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:39:21,744 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:39:21,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:21,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-08 11:39:21,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:39:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 11 proven. 71 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 11:39:21,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:39:21,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-09-08 11:39:21,976 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 11:39:21,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 11:39:21,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-08 11:39:21,976 INFO L87 Difference]: Start difference. First operand 11111 states and 14220 transitions. Second operand 9 states. [2019-09-08 11:39:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:39:26,429 INFO L93 Difference]: Finished difference Result 23730 states and 30258 transitions. [2019-09-08 11:39:26,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 11:39:26,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2019-09-08 11:39:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:39:26,443 INFO L225 Difference]: With dead ends: 23730 [2019-09-08 11:39:26,443 INFO L226 Difference]: Without dead ends: 12948 [2019-09-08 11:39:26,452 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-09-08 11:39:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2019-09-08 11:39:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 12745. [2019-09-08 11:39:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12745 states. [2019-09-08 11:39:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 15984 transitions. [2019-09-08 11:39:30,594 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 15984 transitions. Word has length 117 [2019-09-08 11:39:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:39:30,595 INFO L475 AbstractCegarLoop]: Abstraction has 12745 states and 15984 transitions. [2019-09-08 11:39:30,595 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 11:39:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 15984 transitions. [2019-09-08 11:39:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 11:39:30,596 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:39:30,596 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:39:30,597 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:39:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:39:30,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1941525733, now seen corresponding path program 1 times [2019-09-08 11:39:30,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:39:30,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:39:30,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:30,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:30,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 37 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:39:31,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:39:31,013 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:39:31,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:39:31,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 46 conjunts are in the unsatisfiable core [2019-09-08 11:39:31,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:39:31,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:32,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:32,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:39:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 37 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:39:32,789 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:39:32,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 42 [2019-09-08 11:39:32,789 INFO L454 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-09-08 11:39:32,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-09-08 11:39:32,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2019-09-08 11:39:32,790 INFO L87 Difference]: Start difference. First operand 12745 states and 15984 transitions. Second operand 42 states. [2019-09-08 11:39:35,602 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-08 11:39:36,489 WARN L188 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2019-09-08 11:39:36,989 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 11:39:37,273 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-08 11:39:37,563 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-08 11:39:38,222 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-08 11:39:38,997 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2019-09-08 11:39:49,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:39:49,604 INFO L93 Difference]: Finished difference Result 28584 states and 36191 transitions. [2019-09-08 11:39:49,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-09-08 11:39:49,604 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 117 [2019-09-08 11:39:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:39:49,624 INFO L225 Difference]: With dead ends: 28584 [2019-09-08 11:39:49,624 INFO L226 Difference]: Without dead ends: 21272 [2019-09-08 11:39:49,633 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5057 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2165, Invalid=13837, Unknown=0, NotChecked=0, Total=16002 [2019-09-08 11:39:49,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21272 states. [2019-09-08 11:39:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21272 to 13419. [2019-09-08 11:39:54,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13419 states. [2019-09-08 11:39:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 16867 transitions. [2019-09-08 11:39:54,173 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 16867 transitions. Word has length 117 [2019-09-08 11:39:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:39:54,173 INFO L475 AbstractCegarLoop]: Abstraction has 13419 states and 16867 transitions. [2019-09-08 11:39:54,173 INFO L476 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-09-08 11:39:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 16867 transitions. [2019-09-08 11:39:54,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-08 11:39:54,175 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:39:54,175 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:39:54,175 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:39:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:39:54,175 INFO L82 PathProgramCache]: Analyzing trace with hash 479759881, now seen corresponding path program 1 times [2019-09-08 11:39:54,175 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:39:54,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:39:54,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:54,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:39:54,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:39:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 52 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 11:40:06,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:40:06,520 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:40:06,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:06,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 11:40:06,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:40:06,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:06,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:06,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:06,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 54 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 11:40:15,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:40:15,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2019-09-08 11:40:15,041 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 11:40:15,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 11:40:15,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=163, Unknown=8, NotChecked=0, Total=210 [2019-09-08 11:40:15,041 INFO L87 Difference]: Start difference. First operand 13419 states and 16867 transitions. Second operand 15 states. [2019-09-08 11:40:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:40:23,823 INFO L93 Difference]: Finished difference Result 34153 states and 43606 transitions. [2019-09-08 11:40:23,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-08 11:40:23,823 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 117 [2019-09-08 11:40:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:40:23,844 INFO L225 Difference]: With dead ends: 34153 [2019-09-08 11:40:23,844 INFO L226 Difference]: Without dead ends: 21862 [2019-09-08 11:40:23,854 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=129, Invalid=513, Unknown=8, NotChecked=0, Total=650 [2019-09-08 11:40:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21862 states. [2019-09-08 11:40:29,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21862 to 15878. [2019-09-08 11:40:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15878 states. [2019-09-08 11:40:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 20026 transitions. [2019-09-08 11:40:29,554 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 20026 transitions. Word has length 117 [2019-09-08 11:40:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:40:29,554 INFO L475 AbstractCegarLoop]: Abstraction has 15878 states and 20026 transitions. [2019-09-08 11:40:29,554 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 11:40:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 20026 transitions. [2019-09-08 11:40:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 11:40:29,555 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:40:29,555 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:40:29,555 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:40:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:40:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1743371972, now seen corresponding path program 1 times [2019-09-08 11:40:29,556 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:40:29,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:40:29,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:29,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:29,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:40:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:40:30,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:40:30,513 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:40:30,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:40:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:40:30,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 11:40:30,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:40:30,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:30,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:30,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:30,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:30,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:30,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:40:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:40:31,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:40:31,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12] total 32 [2019-09-08 11:40:31,118 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-08 11:40:31,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-08 11:40:31,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=911, Unknown=0, NotChecked=0, Total=992 [2019-09-08 11:40:31,118 INFO L87 Difference]: Start difference. First operand 15878 states and 20026 transitions. Second operand 32 states. [2019-09-08 11:40:31,364 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2019-09-08 11:40:32,476 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2019-09-08 11:40:32,948 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2019-09-08 11:40:33,335 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-08 11:40:33,586 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2019-09-08 11:40:34,536 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2019-09-08 11:40:34,963 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2019-09-08 11:40:35,680 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2019-09-08 11:40:35,883 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2019-09-08 11:40:36,250 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2019-09-08 11:40:36,601 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2019-09-08 11:40:36,960 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2019-09-08 11:40:37,628 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2019-09-08 11:40:38,207 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2019-09-08 11:40:38,555 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-08 11:40:38,806 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2019-09-08 11:40:39,217 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2019-09-08 11:40:39,608 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2019-09-08 11:40:39,802 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2019-09-08 11:40:40,058 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 11:40:40,354 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-08 11:40:40,509 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2019-09-08 11:40:40,793 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 11:40:41,389 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 11:40:41,652 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2019-09-08 11:40:42,083 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 11:40:42,444 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2019-09-08 11:40:42,668 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-08 11:40:42,914 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2019-09-08 11:40:43,134 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2019-09-08 11:40:43,349 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2019-09-08 11:40:43,849 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2019-09-08 11:40:44,053 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2019-09-08 11:40:44,287 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2019-09-08 11:40:44,431 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2019-09-08 11:40:44,679 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2019-09-08 11:40:45,094 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2019-09-08 11:40:45,358 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2019-09-08 11:40:45,958 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2019-09-08 11:40:46,175 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-09-08 11:40:46,663 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2019-09-08 11:40:46,868 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2019-09-08 11:40:47,075 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2019-09-08 11:40:47,566 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-09-08 11:40:52,122 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-08 11:41:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:41:00,685 INFO L93 Difference]: Finished difference Result 41221 states and 52513 transitions. [2019-09-08 11:41:00,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2019-09-08 11:41:00,685 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 118 [2019-09-08 11:41:00,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:41:00,711 INFO L225 Difference]: With dead ends: 41221 [2019-09-08 11:41:00,711 INFO L226 Difference]: Without dead ends: 27392 [2019-09-08 11:41:00,722 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8632 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=3407, Invalid=22675, Unknown=0, NotChecked=0, Total=26082 [2019-09-08 11:41:00,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27392 states. [2019-09-08 11:41:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27392 to 19032. [2019-09-08 11:41:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19032 states. [2019-09-08 11:41:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19032 states to 19032 states and 24212 transitions. [2019-09-08 11:41:07,620 INFO L78 Accepts]: Start accepts. Automaton has 19032 states and 24212 transitions. Word has length 118 [2019-09-08 11:41:07,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:41:07,620 INFO L475 AbstractCegarLoop]: Abstraction has 19032 states and 24212 transitions. [2019-09-08 11:41:07,620 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-08 11:41:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 19032 states and 24212 transitions. [2019-09-08 11:41:07,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 11:41:07,622 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:41:07,622 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:41:07,622 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:41:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:41:07,622 INFO L82 PathProgramCache]: Analyzing trace with hash 371496313, now seen corresponding path program 1 times [2019-09-08 11:41:07,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:41:07,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:41:07,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:41:07,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:41:07,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:41:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:41:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:41:08,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:41:08,612 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:41:08,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:41:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:41:08,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 56 conjunts are in the unsatisfiable core [2019-09-08 11:41:08,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:41:10,613 WARN L188 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-09-08 11:41:11,101 WARN L188 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-09-08 11:41:12,034 WARN L188 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2019-09-08 11:41:13,454 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 43 [2019-09-08 11:41:14,139 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-09-08 11:41:14,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:41:14,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:41:14,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:41:14,686 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2019-09-08 11:41:15,276 WARN L188 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-09-08 11:41:16,031 WARN L188 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-09-08 11:41:16,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:41:17,327 WARN L188 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2019-09-08 11:41:17,944 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-09-08 11:41:18,267 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-08 11:41:18,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:41:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 39 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:41:18,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:41:18,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 51 [2019-09-08 11:41:18,367 INFO L454 AbstractCegarLoop]: Interpolant automaton has 51 states [2019-09-08 11:41:18,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2019-09-08 11:41:18,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2366, Unknown=1, NotChecked=0, Total=2550 [2019-09-08 11:41:18,367 INFO L87 Difference]: Start difference. First operand 19032 states and 24212 transitions. Second operand 51 states. [2019-09-08 11:41:18,567 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2019-09-08 11:41:19,834 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-08 11:41:20,110 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 11:41:20,360 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2019-09-08 11:41:20,681 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-09-08 11:41:20,963 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2019-09-08 11:41:21,187 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-09-08 11:41:21,433 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 11:41:21,756 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-08 11:41:22,282 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 11:41:22,560 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-08 11:41:23,367 WARN L188 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-08 11:41:26,636 WARN L188 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-08 11:41:27,329 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-08 11:41:28,154 WARN L188 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2019-09-08 11:41:29,878 WARN L188 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2019-09-08 11:41:30,391 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-09-08 11:41:31,026 WARN L188 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-08 11:41:31,645 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-09-08 11:41:33,524 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-08 11:41:34,192 WARN L188 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-08 11:41:34,567 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-08 11:41:35,444 WARN L188 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-08 11:41:36,695 WARN L188 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-08 11:41:37,395 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-08 11:41:38,459 WARN L188 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2019-09-08 11:41:40,704 WARN L188 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2019-09-08 11:41:41,277 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2019-09-08 11:41:42,671 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-08 11:41:44,679 WARN L188 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-09-08 11:41:46,328 WARN L188 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-08 11:41:47,427 WARN L188 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2019-09-08 11:41:48,768 WARN L188 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-08 11:41:49,599 WARN L188 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 11:41:51,292 WARN L188 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2019-09-08 11:41:51,904 WARN L188 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-09-08 11:41:53,481 WARN L188 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-08 11:41:54,718 WARN L188 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-08 11:41:56,096 WARN L188 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-09-08 11:41:57,342 WARN L188 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-09-08 11:41:58,521 WARN L188 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-08 11:41:59,198 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2019-09-08 11:41:59,823 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 11:42:00,508 WARN L188 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2019-09-08 11:42:01,091 WARN L188 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2019-09-08 11:42:01,840 WARN L188 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 11:42:02,202 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-08 11:42:02,619 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 11:42:03,693 WARN L188 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-08 11:42:04,961 WARN L188 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-08 11:42:05,783 WARN L188 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2019-09-08 11:42:08,201 WARN L188 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 11:42:08,599 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-08 11:42:09,606 WARN L188 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2019-09-08 11:42:10,160 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-08 11:42:10,948 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-08 11:42:13,191 WARN L188 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2019-09-08 11:42:15,105 WARN L188 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-09-08 11:42:16,988 WARN L188 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-08 11:42:17,983 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-08 11:42:24,976 WARN L188 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2019-09-08 11:42:26,770 WARN L188 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-09-08 11:42:27,801 WARN L188 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2019-09-08 11:42:28,806 WARN L188 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-08 11:42:29,397 WARN L188 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-08 11:42:30,640 WARN L188 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2019-09-08 11:42:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:42:40,013 INFO L93 Difference]: Finished difference Result 32489 states and 41179 transitions. [2019-09-08 11:42:40,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2019-09-08 11:42:40,013 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 118 [2019-09-08 11:42:40,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:42:40,038 INFO L225 Difference]: With dead ends: 32489 [2019-09-08 11:42:40,039 INFO L226 Difference]: Without dead ends: 27089 [2019-09-08 11:42:40,046 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7734 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=2607, Invalid=25103, Unknown=12, NotChecked=0, Total=27722 [2019-09-08 11:42:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27089 states. [2019-09-08 11:42:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27089 to 20282. [2019-09-08 11:42:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20282 states. [2019-09-08 11:42:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20282 states to 20282 states and 25828 transitions. [2019-09-08 11:42:47,885 INFO L78 Accepts]: Start accepts. Automaton has 20282 states and 25828 transitions. Word has length 118 [2019-09-08 11:42:47,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:42:47,885 INFO L475 AbstractCegarLoop]: Abstraction has 20282 states and 25828 transitions. [2019-09-08 11:42:47,886 INFO L476 AbstractCegarLoop]: Interpolant automaton has 51 states. [2019-09-08 11:42:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 20282 states and 25828 transitions. [2019-09-08 11:42:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-09-08 11:42:47,887 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:42:47,887 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:42:47,887 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:42:47,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:42:47,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1551935202, now seen corresponding path program 1 times [2019-09-08 11:42:47,887 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:42:47,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:42:47,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:42:47,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:42:47,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:42:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:42:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:42:49,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:42:49,294 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:42:49,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:42:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:42:49,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 61 conjunts are in the unsatisfiable core [2019-09-08 11:42:49,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:42:50,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:42:50,550 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2019-09-08 11:42:50,551 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:42:50,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:42:51,149 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-08 11:42:51,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:42:51,743 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-09-08 11:42:52,046 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-08 11:42:52,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:42:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 65 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-09-08 11:42:52,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:42:52,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 49 [2019-09-08 11:42:52,490 INFO L454 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-09-08 11:42:52,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-09-08 11:42:52,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2173, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 11:42:52,490 INFO L87 Difference]: Start difference. First operand 20282 states and 25828 transitions. Second operand 49 states. [2019-09-08 11:42:52,808 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-09-08 11:42:54,007 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-08 11:42:54,225 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-08 11:42:54,472 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-08 11:42:54,724 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-08 11:42:55,028 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2019-09-08 11:42:55,702 WARN L188 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-09-08 11:42:56,423 WARN L188 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2019-09-08 11:42:57,441 WARN L188 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2019-09-08 11:43:00,237 WARN L188 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2019-09-08 11:43:00,741 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-09-08 11:43:01,460 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 80 [2019-09-08 11:43:02,634 WARN L188 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-08 11:43:03,170 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2019-09-08 11:43:03,593 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 11:43:04,821 WARN L188 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2019-09-08 11:43:05,764 WARN L188 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2019-09-08 11:43:06,413 WARN L188 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-09-08 11:43:06,620 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 11:43:06,937 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-08 11:43:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:43:16,953 INFO L93 Difference]: Finished difference Result 29511 states and 37455 transitions. [2019-09-08 11:43:16,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-09-08 11:43:16,953 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 121 [2019-09-08 11:43:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:43:16,977 INFO L225 Difference]: With dead ends: 29511 [2019-09-08 11:43:16,977 INFO L226 Difference]: Without dead ends: 23043 [2019-09-08 11:43:16,986 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=856, Invalid=6800, Unknown=0, NotChecked=0, Total=7656 [2019-09-08 11:43:17,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23043 states. [2019-09-08 11:43:24,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23043 to 20171. [2019-09-08 11:43:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20171 states. [2019-09-08 11:43:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20171 states to 20171 states and 25708 transitions. [2019-09-08 11:43:24,776 INFO L78 Accepts]: Start accepts. Automaton has 20171 states and 25708 transitions. Word has length 121 [2019-09-08 11:43:24,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:43:24,776 INFO L475 AbstractCegarLoop]: Abstraction has 20171 states and 25708 transitions. [2019-09-08 11:43:24,777 INFO L476 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-09-08 11:43:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 20171 states and 25708 transitions. [2019-09-08 11:43:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-09-08 11:43:24,781 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:43:24,781 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:43:24,781 INFO L418 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:43:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:43:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash -458471690, now seen corresponding path program 1 times [2019-09-08 11:43:24,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:43:24,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:43:24,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:43:24,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:43:24,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:43:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:43:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 22 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:43:25,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:43:25,970 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:43:25,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:43:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:43:26,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 11:43:26,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:43:26,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:26,525 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:43:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 67 proven. 152 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-08 11:43:26,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:43:26,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12] total 34 [2019-09-08 11:43:26,799 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-09-08 11:43:26,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-09-08 11:43:26,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2019-09-08 11:43:26,800 INFO L87 Difference]: Start difference. First operand 20171 states and 25708 transitions. Second operand 34 states. [2019-09-08 11:43:27,290 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 105 [2019-09-08 11:43:28,227 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2019-09-08 11:43:28,686 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2019-09-08 11:43:29,340 WARN L188 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2019-09-08 11:43:29,857 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2019-09-08 11:43:30,374 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2019-09-08 11:43:30,901 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2019-09-08 11:43:31,413 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 116 [2019-09-08 11:43:32,094 WARN L188 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2019-09-08 11:43:32,827 WARN L188 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2019-09-08 11:43:33,455 WARN L188 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2019-09-08 11:43:34,142 WARN L188 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 113 [2019-09-08 11:43:34,753 WARN L188 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 120 [2019-09-08 11:43:35,549 WARN L188 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 129 [2019-09-08 11:43:36,035 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 116 [2019-09-08 11:43:36,726 WARN L188 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 131 [2019-09-08 11:43:37,289 WARN L188 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 124 [2019-09-08 11:43:37,922 WARN L188 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 126 [2019-09-08 11:43:38,384 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2019-09-08 11:43:38,829 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2019-09-08 11:43:39,402 WARN L188 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 121 [2019-09-08 11:43:39,936 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2019-09-08 11:43:40,554 WARN L188 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2019-09-08 11:43:41,075 WARN L188 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 116 [2019-09-08 11:43:42,095 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 113 [2019-09-08 11:43:42,591 WARN L188 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2019-09-08 11:43:43,205 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 122 [2019-09-08 11:43:43,793 WARN L188 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 127 [2019-09-08 11:43:44,460 WARN L188 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 126 [2019-09-08 11:43:45,433 WARN L188 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 132 [2019-09-08 11:43:45,905 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 104 [2019-09-08 11:43:46,264 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2019-09-08 11:43:47,099 WARN L188 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 110 [2019-09-08 11:43:47,621 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 102 [2019-09-08 11:43:48,146 WARN L188 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2019-09-08 11:43:50,714 WARN L188 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2019-09-08 11:43:51,345 WARN L188 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 107 [2019-09-08 11:43:51,757 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2019-09-08 11:43:52,321 WARN L188 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 110 [2019-09-08 11:43:52,883 WARN L188 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 119 [2019-09-08 11:43:53,308 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2019-09-08 11:43:53,887 WARN L188 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 125 [2019-09-08 11:43:56,460 WARN L188 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 134 DAG size of output: 117 [2019-09-08 11:43:57,060 WARN L188 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 132 [2019-09-08 11:43:57,713 WARN L188 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 125 [2019-09-08 11:43:58,360 WARN L188 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 119 [2019-09-08 11:43:58,836 WARN L188 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 110 [2019-09-08 11:43:59,343 WARN L188 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 125 [2019-09-08 11:44:00,218 WARN L188 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 121 [2019-09-08 11:44:00,899 WARN L188 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 131 [2019-09-08 11:44:01,642 WARN L188 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 126 [2019-09-08 11:44:02,244 WARN L188 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 132 [2019-09-08 11:44:03,002 WARN L188 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 142