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/eca-rers2012/Problem13_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:33:21,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:33:21,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:33:21,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 19:33:21,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 19:33:21,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 19:33:21,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 19:33:21,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 19:33:21,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 19:33:21,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 19:33:21,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 19:33:21,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 19:33:21,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:33:21,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:33:21,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:33:21,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:33:21,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:33:21,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:33:21,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:33:21,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:33:21,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:33:21,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:33:21,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:33:21,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:33:21,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 19:33:21,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 19:33:21,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 19:33:21,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 19:33:21,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 19:33:21,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 19:33:21,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 19:33:21,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 19:33:21,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 19:33:21,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 19:33:21,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 19:33:21,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 19:33:21,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 19:33:21,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 19:33:21,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:33:21,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:33:21,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:33:21,233 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 [2019-09-07 19:33:21,259 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:33:21,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:33:21,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:33:21,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:33:21,263 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:33:21,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:33:21,264 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:33:21,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:33:21,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:33:21,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:33:21,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:33:21,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:33:21,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:33:21,266 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:33:21,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:33:21,267 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:33:21,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:33:21,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:33:21,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:33:21,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:33:21,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:33:21,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:33:21,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:33:21,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:33:21,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:33:21,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:33:21,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:33:21,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:33:21,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:33:21,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:33:21,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:33:21,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:33:21,341 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:33:21,342 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:33:21,342 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2019-09-07 19:33:21,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513c23c93/c2e349d5f9b84cbc98cb285438bdc318/FLAG890ba2833 [2019-09-07 19:33:22,147 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:33:22,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2019-09-07 19:33:22,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513c23c93/c2e349d5f9b84cbc98cb285438bdc318/FLAG890ba2833 [2019-09-07 19:33:22,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513c23c93/c2e349d5f9b84cbc98cb285438bdc318 [2019-09-07 19:33:22,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:33:22,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:33:22,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:33:22,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:33:22,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:33:22,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:33:22" (1/1) ... [2019-09-07 19:33:22,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cb8da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:22, skipping insertion in model container [2019-09-07 19:33:22,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:33:22" (1/1) ... [2019-09-07 19:33:22,732 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:33:22,922 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:33:24,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:33:24,596 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:33:25,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:33:25,423 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:33:25,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25 WrapperNode [2019-09-07 19:33:25,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:33:25,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:33:25,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:33:25,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:33:25,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (1/1) ... [2019-09-07 19:33:25,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (1/1) ... [2019-09-07 19:33:25,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (1/1) ... [2019-09-07 19:33:25,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (1/1) ... [2019-09-07 19:33:25,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (1/1) ... [2019-09-07 19:33:25,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (1/1) ... [2019-09-07 19:33:25,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (1/1) ... [2019-09-07 19:33:25,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:33:25,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:33:25,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:33:25,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:33:25,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (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 [2019-09-07 19:33:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:33:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:33:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:33:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:33:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:33:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:33:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:33:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:33:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:33:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:33:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:33:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:33:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:33:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:33:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:33:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:33:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:33:32,212 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:33:32,213 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:33:32,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:33:32 BoogieIcfgContainer [2019-09-07 19:33:32,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:33:32,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:33:32,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:33:32,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:33:32,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:33:22" (1/3) ... [2019-09-07 19:33:32,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1859215f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:33:32, skipping insertion in model container [2019-09-07 19:33:32,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:33:25" (2/3) ... [2019-09-07 19:33:32,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1859215f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:33:32, skipping insertion in model container [2019-09-07 19:33:32,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:33:32" (3/3) ... [2019-09-07 19:33:32,233 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2019-09-07 19:33:32,244 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:33:32,253 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:33:32,273 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:33:32,322 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:33:32,323 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:33:32,323 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:33:32,324 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:33:32,324 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:33:32,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:33:32,324 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:33:32,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:33:32,324 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:33:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:33:32,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-07 19:33:32,373 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:33:32,374 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:33:32,376 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:33:32,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:33:32,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1437185016, now seen corresponding path program 1 times [2019-09-07 19:33:32,383 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:33:32,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:33:32,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:32,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:32,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:33:32,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:33:32,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:33:32,615 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:33:32,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:33:32,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:33:32,633 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-07 19:33:41,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:33:41,669 INFO L93 Difference]: Finished difference Result 3964 states and 7388 transitions. [2019-09-07 19:33:41,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:33:41,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-09-07 19:33:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:33:41,707 INFO L225 Difference]: With dead ends: 3964 [2019-09-07 19:33:41,708 INFO L226 Difference]: Without dead ends: 2758 [2019-09-07 19:33:41,725 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:33:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2019-09-07 19:33:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1919. [2019-09-07 19:33:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2019-09-07 19:33:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3313 transitions. [2019-09-07 19:33:41,941 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3313 transitions. Word has length 19 [2019-09-07 19:33:41,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:33:41,942 INFO L475 AbstractCegarLoop]: Abstraction has 1919 states and 3313 transitions. [2019-09-07 19:33:41,942 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:33:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3313 transitions. [2019-09-07 19:33:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-07 19:33:41,948 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:33:41,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:33:41,949 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:33:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:33:41,950 INFO L82 PathProgramCache]: Analyzing trace with hash 173051777, now seen corresponding path program 1 times [2019-09-07 19:33:41,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:33:41,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:33:41,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:41,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:41,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:33:42,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:33:42,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:33:42,213 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:33:42,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:33:42,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:33:42,215 INFO L87 Difference]: Start difference. First operand 1919 states and 3313 transitions. Second operand 5 states. [2019-09-07 19:33:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:33:55,450 INFO L93 Difference]: Finished difference Result 5545 states and 9710 transitions. [2019-09-07 19:33:55,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:33:55,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2019-09-07 19:33:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:33:55,470 INFO L225 Difference]: With dead ends: 5545 [2019-09-07 19:33:55,470 INFO L226 Difference]: Without dead ends: 3632 [2019-09-07 19:33:55,475 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:33:55,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2019-09-07 19:33:55,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3623. [2019-09-07 19:33:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3623 states. [2019-09-07 19:33:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5644 transitions. [2019-09-07 19:33:55,562 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5644 transitions. Word has length 88 [2019-09-07 19:33:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:33:55,563 INFO L475 AbstractCegarLoop]: Abstraction has 3623 states and 5644 transitions. [2019-09-07 19:33:55,563 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:33:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5644 transitions. [2019-09-07 19:33:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-09-07 19:33:55,566 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:33:55,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:33:55,567 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:33:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:33:55,567 INFO L82 PathProgramCache]: Analyzing trace with hash -783712923, now seen corresponding path program 1 times [2019-09-07 19:33:55,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:33:55,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:33:55,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:55,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:33:55,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:33:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:33:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:33:55,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:33:55,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:33:55,688 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:33:55,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:33:55,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:33:55,689 INFO L87 Difference]: Start difference. First operand 3623 states and 5644 transitions. Second operand 5 states. [2019-09-07 19:34:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:34:03,731 INFO L93 Difference]: Finished difference Result 10808 states and 17216 transitions. [2019-09-07 19:34:03,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:34:03,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2019-09-07 19:34:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:34:03,775 INFO L225 Difference]: With dead ends: 10808 [2019-09-07 19:34:03,778 INFO L226 Difference]: Without dead ends: 7191 [2019-09-07 19:34:03,791 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:34:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2019-09-07 19:34:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7086. [2019-09-07 19:34:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7086 states. [2019-09-07 19:34:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7086 states to 7086 states and 10105 transitions. [2019-09-07 19:34:04,062 INFO L78 Accepts]: Start accepts. Automaton has 7086 states and 10105 transitions. Word has length 90 [2019-09-07 19:34:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:34:04,063 INFO L475 AbstractCegarLoop]: Abstraction has 7086 states and 10105 transitions. [2019-09-07 19:34:04,063 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:34:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7086 states and 10105 transitions. [2019-09-07 19:34:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-07 19:34:04,074 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:34:04,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:34:04,075 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:34:04,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:34:04,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1226275037, now seen corresponding path program 1 times [2019-09-07 19:34:04,076 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:34:04,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:34:04,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:04,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:04,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:34:04,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:34:04,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:34:04,231 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:34:04,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:34:04,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:34:04,231 INFO L87 Difference]: Start difference. First operand 7086 states and 10105 transitions. Second operand 3 states. [2019-09-07 19:34:09,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:34:09,229 INFO L93 Difference]: Finished difference Result 20817 states and 30786 transitions. [2019-09-07 19:34:09,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:34:09,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2019-09-07 19:34:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:34:09,289 INFO L225 Difference]: With dead ends: 20817 [2019-09-07 19:34:09,290 INFO L226 Difference]: Without dead ends: 13737 [2019-09-07 19:34:09,310 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:34:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13737 states. [2019-09-07 19:34:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13737 to 13728. [2019-09-07 19:34:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13728 states. [2019-09-07 19:34:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13728 states to 13728 states and 18716 transitions. [2019-09-07 19:34:09,598 INFO L78 Accepts]: Start accepts. Automaton has 13728 states and 18716 transitions. Word has length 134 [2019-09-07 19:34:09,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:34:09,601 INFO L475 AbstractCegarLoop]: Abstraction has 13728 states and 18716 transitions. [2019-09-07 19:34:09,601 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:34:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 13728 states and 18716 transitions. [2019-09-07 19:34:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-07 19:34:09,608 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:34:09,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:34:09,609 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:34:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:34:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash -856490315, now seen corresponding path program 1 times [2019-09-07 19:34:09,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:34:09,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:34:09,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:09,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:09,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:34:09,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:34:09,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:34:09,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:34:09,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:34:09,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:34:09,740 INFO L87 Difference]: Start difference. First operand 13728 states and 18716 transitions. Second operand 4 states. [2019-09-07 19:34:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:34:17,038 INFO L93 Difference]: Finished difference Result 31482 states and 42619 transitions. [2019-09-07 19:34:17,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:34:17,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-09-07 19:34:17,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:34:17,087 INFO L225 Difference]: With dead ends: 31482 [2019-09-07 19:34:17,087 INFO L226 Difference]: Without dead ends: 17760 [2019-09-07 19:34:17,116 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:34:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17760 states. [2019-09-07 19:34:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17760 to 16956. [2019-09-07 19:34:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16956 states. [2019-09-07 19:34:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16956 states to 16956 states and 20837 transitions. [2019-09-07 19:34:17,436 INFO L78 Accepts]: Start accepts. Automaton has 16956 states and 20837 transitions. Word has length 139 [2019-09-07 19:34:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:34:17,437 INFO L475 AbstractCegarLoop]: Abstraction has 16956 states and 20837 transitions. [2019-09-07 19:34:17,437 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:34:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16956 states and 20837 transitions. [2019-09-07 19:34:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-09-07 19:34:17,446 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:34:17,447 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:34:17,447 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:34:17,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:34:17,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1628027278, now seen corresponding path program 1 times [2019-09-07 19:34:17,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:34:17,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:34:17,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:17,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:17,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:34:17,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:34:17,724 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) [2019-09-07 19:34:17,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:34:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:17,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:34:17,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:34:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 19:34:17,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:34:17,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 19:34:17,989 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:34:17,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:34:17,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:34:17,990 INFO L87 Difference]: Start difference. First operand 16956 states and 20837 transitions. Second operand 7 states. [2019-09-07 19:34:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:34:31,038 INFO L93 Difference]: Finished difference Result 42547 states and 53700 transitions. [2019-09-07 19:34:31,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:34:31,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2019-09-07 19:34:31,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:34:31,113 INFO L225 Difference]: With dead ends: 42547 [2019-09-07 19:34:31,113 INFO L226 Difference]: Without dead ends: 25597 [2019-09-07 19:34:31,167 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:34:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25597 states. [2019-09-07 19:34:31,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25597 to 22304. [2019-09-07 19:34:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22304 states. [2019-09-07 19:34:31,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22304 states to 22304 states and 25808 transitions. [2019-09-07 19:34:31,676 INFO L78 Accepts]: Start accepts. Automaton has 22304 states and 25808 transitions. Word has length 208 [2019-09-07 19:34:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:34:31,682 INFO L475 AbstractCegarLoop]: Abstraction has 22304 states and 25808 transitions. [2019-09-07 19:34:31,682 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:34:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 22304 states and 25808 transitions. [2019-09-07 19:34:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-09-07 19:34:31,687 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:34:31,688 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:34:31,688 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:34:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:34:31,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1559716632, now seen corresponding path program 1 times [2019-09-07 19:34:31,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:34:31,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:34:31,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:31,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:31,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:34:31,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:34:31,969 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 [2019-09-07 19:34:31,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:32,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:34:32,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:34:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-07 19:34:32,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:34:32,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:34:32,195 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:34:32,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:34:32,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:34:32,196 INFO L87 Difference]: Start difference. First operand 22304 states and 25808 transitions. Second operand 9 states. [2019-09-07 19:34:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:34:44,268 INFO L93 Difference]: Finished difference Result 77414 states and 94871 transitions. [2019-09-07 19:34:44,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 19:34:44,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 223 [2019-09-07 19:34:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:34:44,463 INFO L225 Difference]: With dead ends: 77414 [2019-09-07 19:34:44,463 INFO L226 Difference]: Without dead ends: 55116 [2019-09-07 19:34:44,514 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:34:44,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55116 states. [2019-09-07 19:34:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55116 to 53020. [2019-09-07 19:34:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53020 states. [2019-09-07 19:34:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53020 states to 53020 states and 62796 transitions. [2019-09-07 19:34:45,695 INFO L78 Accepts]: Start accepts. Automaton has 53020 states and 62796 transitions. Word has length 223 [2019-09-07 19:34:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:34:45,695 INFO L475 AbstractCegarLoop]: Abstraction has 53020 states and 62796 transitions. [2019-09-07 19:34:45,696 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:34:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 53020 states and 62796 transitions. [2019-09-07 19:34:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2019-09-07 19:34:45,704 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:34:45,704 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:34:45,705 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:34:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:34:45,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1253656429, now seen corresponding path program 1 times [2019-09-07 19:34:45,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:34:45,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:34:45,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:45,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:45,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2019-09-07 19:34:45,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:34:45,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:34:45,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:34:45,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:34:45,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:34:45,912 INFO L87 Difference]: Start difference. First operand 53020 states and 62796 transitions. Second operand 4 states. [2019-09-07 19:34:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:34:54,938 INFO L93 Difference]: Finished difference Result 119995 states and 144071 transitions. [2019-09-07 19:34:54,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:34:54,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 297 [2019-09-07 19:34:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:34:55,129 INFO L225 Difference]: With dead ends: 119995 [2019-09-07 19:34:55,129 INFO L226 Difference]: Without dead ends: 67784 [2019-09-07 19:34:55,209 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:34:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67784 states. [2019-09-07 19:34:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67784 to 65318. [2019-09-07 19:34:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65318 states. [2019-09-07 19:34:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65318 states to 65318 states and 74907 transitions. [2019-09-07 19:34:56,243 INFO L78 Accepts]: Start accepts. Automaton has 65318 states and 74907 transitions. Word has length 297 [2019-09-07 19:34:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:34:56,244 INFO L475 AbstractCegarLoop]: Abstraction has 65318 states and 74907 transitions. [2019-09-07 19:34:56,244 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:34:56,245 INFO L276 IsEmpty]: Start isEmpty. Operand 65318 states and 74907 transitions. [2019-09-07 19:34:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2019-09-07 19:34:56,283 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:34:56,283 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:34:56,284 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:34:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:34:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1609244378, now seen corresponding path program 1 times [2019-09-07 19:34:56,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:34:56,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:34:56,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:56,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:56,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:34:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-09-07 19:34:57,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:34:57,029 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 [2019-09-07 19:34:57,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:34:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:34:57,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:34:57,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:34:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-09-07 19:34:57,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:34:57,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:34:57,275 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:34:57,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:34:57,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:34:57,276 INFO L87 Difference]: Start difference. First operand 65318 states and 74907 transitions. Second operand 9 states. [2019-09-07 19:35:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:35:08,899 INFO L93 Difference]: Finished difference Result 146612 states and 170320 transitions. [2019-09-07 19:35:08,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:35:08,905 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 421 [2019-09-07 19:35:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:35:09,115 INFO L225 Difference]: With dead ends: 146612 [2019-09-07 19:35:09,116 INFO L226 Difference]: Without dead ends: 81289 [2019-09-07 19:35:09,210 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:35:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81289 states. [2019-09-07 19:35:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81289 to 80371. [2019-09-07 19:35:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80371 states. [2019-09-07 19:35:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80371 states to 80371 states and 90642 transitions. [2019-09-07 19:35:10,270 INFO L78 Accepts]: Start accepts. Automaton has 80371 states and 90642 transitions. Word has length 421 [2019-09-07 19:35:10,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:35:10,271 INFO L475 AbstractCegarLoop]: Abstraction has 80371 states and 90642 transitions. [2019-09-07 19:35:10,271 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:35:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 80371 states and 90642 transitions. [2019-09-07 19:35:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2019-09-07 19:35:10,306 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:35:10,307 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:35:10,307 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:35:10,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:35:10,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1526816228, now seen corresponding path program 1 times [2019-09-07 19:35:10,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:35:10,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:35:10,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:35:10,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:35:10,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:35:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:35:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 224 proven. 313 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-09-07 19:35:13,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:35:13,474 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:35:13,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:35:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:35:13,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:35:13,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:35:13,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:35:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2019-09-07 19:35:13,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:35:13,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2019-09-07 19:35:13,897 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-07 19:35:13,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-07 19:35:13,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2019-09-07 19:35:13,898 INFO L87 Difference]: Start difference. First operand 80371 states and 90642 transitions. Second operand 24 states. [2019-09-07 19:35:14,655 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2019-09-07 19:35:15,195 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2019-09-07 19:35:16,259 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 19:35:16,673 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-07 19:35:18,787 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2019-09-07 19:35:19,522 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-07 19:35:19,991 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-07 19:35:20,391 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-07 19:35:21,038 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-07 19:35:21,251 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-07 19:35:21,598 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2019-09-07 19:35:21,880 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2019-09-07 19:35:22,973 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-07 19:35:23,403 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-07 19:35:23,779 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-07 19:35:23,973 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-07 19:35:24,251 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-07 19:35:24,622 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2019-09-07 19:35:24,996 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-07 19:35:25,442 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-07 19:35:25,798 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-07 19:35:26,040 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-07 19:35:26,591 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-07 19:35:27,147 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2019-09-07 19:35:27,465 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2019-09-07 19:35:27,780 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-07 19:35:28,179 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-07 19:35:28,389 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-07 19:35:28,808 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-07 19:35:29,046 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-07 19:35:29,517 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-07 19:35:30,025 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-07 19:35:30,702 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2019-09-07 19:35:31,176 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-09-07 19:35:31,319 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 34 [2019-09-07 19:35:31,632 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-07 19:35:32,050 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-07 19:35:32,336 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-07 19:35:32,817 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-07 19:35:32,984 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-09-07 19:35:33,378 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-07 19:35:33,905 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-07 19:35:34,301 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2019-09-07 19:35:34,732 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-07 19:35:35,319 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-07 19:35:35,739 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2019-09-07 19:35:36,166 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-07 19:35:36,951 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-07 19:35:37,511 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-07 19:35:37,714 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-07 19:35:38,041 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-07 19:35:38,275 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-07 19:35:38,563 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-07 19:35:38,899 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2019-09-07 19:35:39,225 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-07 19:35:39,679 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2019-09-07 19:35:39,874 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 19:35:40,314 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-07 19:35:42,135 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-09-07 19:35:43,300 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2019-09-07 19:35:43,529 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-07 19:35:43,714 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2019-09-07 19:35:43,936 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-07 19:35:45,361 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2019-09-07 19:35:46,178 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2019-09-07 19:35:47,453 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-07 19:35:51,789 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-07 19:35:52,175 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2019-09-07 19:35:53,351 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-07 19:35:53,526 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-07 19:35:56,078 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-07 19:35:57,410 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-07 19:35:57,625 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-07 19:35:58,104 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-07 19:35:59,329 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-07 19:35:59,949 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-07 19:36:00,308 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-07 19:36:02,013 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-07 19:36:03,863 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-07 19:36:08,349 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-09-07 19:36:08,915 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-07 19:36:09,402 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 19:36:11,200 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2019-09-07 19:36:13,189 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-07 19:36:13,488 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-07 19:36:13,873 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-07 19:36:14,099 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-07 19:36:15,110 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-07 19:36:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:36:18,021 INFO L93 Difference]: Finished difference Result 177628 states and 202729 transitions. [2019-09-07 19:36:18,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2019-09-07 19:36:18,022 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 478 [2019-09-07 19:36:18,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:36:18,170 INFO L225 Difference]: With dead ends: 177628 [2019-09-07 19:36:18,170 INFO L226 Difference]: Without dead ends: 88990 [2019-09-07 19:36:18,295 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 491 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21150 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=6619, Invalid=43333, Unknown=0, NotChecked=0, Total=49952 [2019-09-07 19:36:18,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88990 states. [2019-09-07 19:36:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88990 to 69913. [2019-09-07 19:36:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69913 states. [2019-09-07 19:36:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69913 states to 69913 states and 76471 transitions. [2019-09-07 19:36:19,188 INFO L78 Accepts]: Start accepts. Automaton has 69913 states and 76471 transitions. Word has length 478 [2019-09-07 19:36:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:36:19,189 INFO L475 AbstractCegarLoop]: Abstraction has 69913 states and 76471 transitions. [2019-09-07 19:36:19,189 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-07 19:36:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 69913 states and 76471 transitions. [2019-09-07 19:36:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2019-09-07 19:36:19,240 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:36:19,241 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:36:19,241 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:36:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:36:19,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1153011684, now seen corresponding path program 1 times [2019-09-07 19:36:19,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:36:19,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:36:19,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:19,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:19,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 250 proven. 107 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2019-09-07 19:36:20,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:36:20,238 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:36:20,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:20,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:36:20,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:36:20,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:36:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 499 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-09-07 19:36:21,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:36:21,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-07 19:36:21,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:36:21,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:36:21,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:36:21,004 INFO L87 Difference]: Start difference. First operand 69913 states and 76471 transitions. Second operand 12 states. [2019-09-07 19:36:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:36:56,562 INFO L93 Difference]: Finished difference Result 234962 states and 261569 transitions. [2019-09-07 19:36:56,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-07 19:36:56,562 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 753 [2019-09-07 19:36:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:36:56,866 INFO L225 Difference]: With dead ends: 234962 [2019-09-07 19:36:56,866 INFO L226 Difference]: Without dead ends: 165869 [2019-09-07 19:36:56,958 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=477, Invalid=2175, Unknown=0, NotChecked=0, Total=2652 [2019-09-07 19:36:57,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165869 states. [2019-09-07 19:36:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165869 to 135861. [2019-09-07 19:36:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135861 states. [2019-09-07 19:36:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135861 states to 135861 states and 151039 transitions. [2019-09-07 19:36:59,016 INFO L78 Accepts]: Start accepts. Automaton has 135861 states and 151039 transitions. Word has length 753 [2019-09-07 19:36:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:36:59,017 INFO L475 AbstractCegarLoop]: Abstraction has 135861 states and 151039 transitions. [2019-09-07 19:36:59,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:36:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 135861 states and 151039 transitions. [2019-09-07 19:36:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2019-09-07 19:36:59,088 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:36:59,089 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:36:59,089 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:36:59,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:36:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1492357311, now seen corresponding path program 1 times [2019-09-07 19:36:59,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:36:59,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:36:59,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:59,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:59,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 123 proven. 748 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-09-07 19:37:03,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:37:03,058 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) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:37:03,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:03,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:37:03,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:37:03,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:37:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 851 proven. 2 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-09-07 19:37:04,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:37:04,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 19:37:04,832 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:37:04,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:37:04,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:37:04,832 INFO L87 Difference]: Start difference. First operand 135861 states and 151039 transitions. Second operand 16 states. [2019-09-07 19:37:41,380 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2019-09-07 19:37:43,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:37:43,170 INFO L93 Difference]: Finished difference Result 332004 states and 370865 transitions. [2019-09-07 19:37:43,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2019-09-07 19:37:43,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1026 [2019-09-07 19:37:43,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:37:43,544 INFO L225 Difference]: With dead ends: 332004 [2019-09-07 19:37:43,544 INFO L226 Difference]: Without dead ends: 192541 [2019-09-07 19:37:43,652 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 1108 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4942 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1820, Invalid=11062, Unknown=0, NotChecked=0, Total=12882 [2019-09-07 19:37:43,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192541 states. [2019-09-07 19:37:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192541 to 189009. [2019-09-07 19:37:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189009 states. [2019-09-07 19:37:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189009 states to 189009 states and 207447 transitions. [2019-09-07 19:37:50,684 INFO L78 Accepts]: Start accepts. Automaton has 189009 states and 207447 transitions. Word has length 1026 [2019-09-07 19:37:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:37:50,684 INFO L475 AbstractCegarLoop]: Abstraction has 189009 states and 207447 transitions. [2019-09-07 19:37:50,684 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:37:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 189009 states and 207447 transitions. [2019-09-07 19:37:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1269 [2019-09-07 19:37:50,770 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:37:50,771 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:37:50,771 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:37:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:37:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1159190713, now seen corresponding path program 1 times [2019-09-07 19:37:50,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:37:50,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:37:50,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:50,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:50,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 553 proven. 591 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2019-09-07 19:37:52,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:37:52,433 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 [2019-09-07 19:37:52,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:52,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:37:52,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:37:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 1361 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2019-09-07 19:37:53,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:37:53,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 19:37:53,632 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 19:37:53,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 19:37:53,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:37:53,633 INFO L87 Difference]: Start difference. First operand 189009 states and 207447 transitions. Second operand 11 states. [2019-09-07 19:38:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:38:13,057 INFO L93 Difference]: Finished difference Result 368811 states and 404790 transitions. [2019-09-07 19:38:13,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 19:38:13,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1268 [2019-09-07 19:38:13,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:38:13,401 INFO L225 Difference]: With dead ends: 368811 [2019-09-07 19:38:13,402 INFO L226 Difference]: Without dead ends: 201575 [2019-09-07 19:38:13,525 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1298 GetRequests, 1279 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-09-07 19:38:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201575 states. [2019-09-07 19:38:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201575 to 195116. [2019-09-07 19:38:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195116 states. [2019-09-07 19:38:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195116 states to 195116 states and 209594 transitions. [2019-09-07 19:38:15,825 INFO L78 Accepts]: Start accepts. Automaton has 195116 states and 209594 transitions. Word has length 1268 [2019-09-07 19:38:15,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:38:15,826 INFO L475 AbstractCegarLoop]: Abstraction has 195116 states and 209594 transitions. [2019-09-07 19:38:15,826 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 19:38:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 195116 states and 209594 transitions. [2019-09-07 19:38:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2019-09-07 19:38:15,930 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:38:15,930 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:38:15,931 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:38:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:38:15,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1617743363, now seen corresponding path program 1 times [2019-09-07 19:38:15,931 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:38:15,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:38:15,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:38:15,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:38:15,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:38:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:38:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 303 proven. 264 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2019-09-07 19:38:18,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:38:18,314 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 [2019-09-07 19:38:18,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:38:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:38:18,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:38:18,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:38:18,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:38:18,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:38:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 1479 proven. 2 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2019-09-07 19:38:22,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:38:22,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-09-07 19:38:22,007 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 19:38:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 19:38:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:38:22,007 INFO L87 Difference]: Start difference. First operand 195116 states and 209594 transitions. Second operand 11 states. [2019-09-07 19:39:19,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:39:19,629 INFO L93 Difference]: Finished difference Result 565191 states and 633297 transitions. [2019-09-07 19:39:19,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2019-09-07 19:39:19,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1365 [2019-09-07 19:39:19,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:39:20,498 INFO L225 Difference]: With dead ends: 565191 [2019-09-07 19:39:20,498 INFO L226 Difference]: Without dead ends: 371676 [2019-09-07 19:39:20,667 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1579 GetRequests, 1461 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5790 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1844, Invalid=12436, Unknown=0, NotChecked=0, Total=14280 [2019-09-07 19:39:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371676 states. [2019-09-07 19:39:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371676 to 344318. [2019-09-07 19:39:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344318 states. [2019-09-07 19:39:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344318 states to 344318 states and 367302 transitions. [2019-09-07 19:39:32,133 INFO L78 Accepts]: Start accepts. Automaton has 344318 states and 367302 transitions. Word has length 1365 [2019-09-07 19:39:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:39:32,134 INFO L475 AbstractCegarLoop]: Abstraction has 344318 states and 367302 transitions. [2019-09-07 19:39:32,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 19:39:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 344318 states and 367302 transitions. [2019-09-07 19:39:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2019-09-07 19:39:32,367 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:39:32,369 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:39:32,370 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:39:32,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:39:32,370 INFO L82 PathProgramCache]: Analyzing trace with hash 152634216, now seen corresponding path program 1 times [2019-09-07 19:39:32,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:39:32,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:39:32,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:32,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:32,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 577 proven. 218 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2019-09-07 19:39:35,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:39:35,497 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 [2019-09-07 19:39:35,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:38,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:39:38,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:39:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 1515 proven. 2 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-09-07 19:39:39,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:39:39,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2019-09-07 19:39:39,699 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:39:39,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:39:39,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:39:39,700 INFO L87 Difference]: Start difference. First operand 344318 states and 367302 transitions. Second operand 9 states. [2019-09-07 19:39:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:39:51,081 INFO L93 Difference]: Finished difference Result 694289 states and 743398 transitions. [2019-09-07 19:39:51,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:39:51,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1453 [2019-09-07 19:39:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:39:51,839 INFO L225 Difference]: With dead ends: 694289 [2019-09-07 19:39:51,839 INFO L226 Difference]: Without dead ends: 357220 [2019-09-07 19:39:52,854 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1458 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:39:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357220 states. [2019-09-07 19:39:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357220 to 345579. [2019-09-07 19:39:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345579 states. [2019-09-07 19:39:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345579 states to 345579 states and 367576 transitions. [2019-09-07 19:39:58,682 INFO L78 Accepts]: Start accepts. Automaton has 345579 states and 367576 transitions. Word has length 1453 [2019-09-07 19:39:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:39:58,683 INFO L475 AbstractCegarLoop]: Abstraction has 345579 states and 367576 transitions. [2019-09-07 19:39:58,683 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:39:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 345579 states and 367576 transitions. [2019-09-07 19:39:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1489 [2019-09-07 19:39:58,844 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:39:58,845 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:39:58,846 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:39:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:39:58,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1968237390, now seen corresponding path program 1 times [2019-09-07 19:39:58,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:39:58,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:39:58,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:58,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1963 backedges. 86 proven. 1302 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2019-09-07 19:40:05,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:40:05,729 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 [2019-09-07 19:40:05,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:06,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 19:40:06,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:40:06,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:40:06,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:40:06,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:40:06,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:40:08,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:40:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1963 backedges. 1274 proven. 2 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2019-09-07 19:40:09,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:40:09,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-09-07 19:40:09,270 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 19:40:09,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 19:40:09,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=150, Unknown=1, NotChecked=0, Total=182 [2019-09-07 19:40:09,271 INFO L87 Difference]: Start difference. First operand 345579 states and 367576 transitions. Second operand 14 states. [2019-09-07 19:40:14,285 WARN L188 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2019-09-07 19:40:38,782 WARN L188 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2019-09-07 19:41:05,736 WARN L188 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 32 DAG size of output: 17 [2019-09-07 19:41:36,880 WARN L188 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2019-09-07 19:41:42,180 WARN L188 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2019-09-07 19:41:54,525 WARN L188 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2019-09-07 19:42:00,265 WARN L188 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2019-09-07 19:42:02,260 WARN L188 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2019-09-07 19:42:04,131 WARN L188 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2019-09-07 19:43:16,783 WARN L188 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2019-09-07 19:43:32,861 WARN L188 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2019-09-07 19:43:53,995 WARN L188 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2019-09-07 19:45:06,734 WARN L188 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2019-09-07 19:45:31,463 WARN L188 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27