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/Problem19_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:24:45,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:24:45,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:24:45,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:24:45,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:24:45,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:24:45,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:24:45,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:24:45,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:24:45,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:24:45,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:24:45,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:24:45,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:24:45,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:24:45,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:24:45,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:24:45,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:24:45,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 23:24:45,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 23:24:45,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 23:24:45,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 23:24:45,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 23:24:45,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 23:24:45,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 23:24:45,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 23:24:45,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:24:45,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:24:45,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:24:45,186 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 23:24:45,201 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:24:45,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:24:45,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:24:45,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:24:45,203 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:24:45,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:24:45,204 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:24:45,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:24:45,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:24:45,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:24:45,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:24:45,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:24:45,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:24:45,205 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:24:45,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:24:45,205 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:24:45,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:24:45,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:24:45,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:24:45,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:24:45,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:24:45,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:24:45,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:24:45,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:24:45,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:24:45,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:24:45,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:24:45,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:24:45,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:24:45,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:24:45,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:24:45,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:24:45,254 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:24:45,254 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:24:45,255 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51.c [2019-09-07 23:24:45,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66d8d8d52/c407c68196c448498804de66a76137c9/FLAG9e9529126 [2019-09-07 23:24:46,139 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:24:46,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label51.c [2019-09-07 23:24:46,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66d8d8d52/c407c68196c448498804de66a76137c9/FLAG9e9529126 [2019-09-07 23:24:46,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66d8d8d52/c407c68196c448498804de66a76137c9 [2019-09-07 23:24:46,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:24:46,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:24:46,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:24:46,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:24:46,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:24:46,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:24:46" (1/1) ... [2019-09-07 23:24:46,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f32035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:46, skipping insertion in model container [2019-09-07 23:24:46,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:24:46" (1/1) ... [2019-09-07 23:24:46,637 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:24:46,873 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:24:49,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:24:49,189 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:24:50,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:24:50,311 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:24:50,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50 WrapperNode [2019-09-07 23:24:50,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:24:50,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:24:50,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:24:50,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:24:50,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (1/1) ... [2019-09-07 23:24:50,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (1/1) ... [2019-09-07 23:24:50,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (1/1) ... [2019-09-07 23:24:50,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (1/1) ... [2019-09-07 23:24:50,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (1/1) ... [2019-09-07 23:24:50,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (1/1) ... [2019-09-07 23:24:50,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (1/1) ... [2019-09-07 23:24:50,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:24:50,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:24:50,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:24:50,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:24:50,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (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 23:24:50,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:24:50,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:24:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:24:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:24:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:24:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:24:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:24:50,795 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:24:50,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:24:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:24:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:24:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:24:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:24:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:24:50,797 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:24:50,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:24:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:24:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:24:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:24:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:24:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:25:01,605 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:25:01,606 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:25:01,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:25:01 BoogieIcfgContainer [2019-09-07 23:25:01,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:25:01,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:25:01,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:25:01,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:25:01,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:24:46" (1/3) ... [2019-09-07 23:25:01,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518a95a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:25:01, skipping insertion in model container [2019-09-07 23:25:01,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:50" (2/3) ... [2019-09-07 23:25:01,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518a95a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:25:01, skipping insertion in model container [2019-09-07 23:25:01,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:25:01" (3/3) ... [2019-09-07 23:25:01,628 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label51.c [2019-09-07 23:25:01,638 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:25:01,648 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:25:01,667 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:25:01,719 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:25:01,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:25:01,720 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:25:01,720 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:25:01,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:25:01,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:25:01,720 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:25:01,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:25:01,721 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:25:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:25:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-07 23:25:01,774 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:01,776 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:25:01,778 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:01,784 INFO L82 PathProgramCache]: Analyzing trace with hash 578579204, now seen corresponding path program 1 times [2019-09-07 23:25:01,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:01,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:01,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:01,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:01,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:02,095 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 23:25:02,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:25:02,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:25:02,103 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:25:02,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:25:02,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:25:02,120 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:25:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:12,818 INFO L93 Difference]: Finished difference Result 5039 states and 9506 transitions. [2019-09-07 23:25:12,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:25:12,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-09-07 23:25:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:12,858 INFO L225 Difference]: With dead ends: 5039 [2019-09-07 23:25:12,858 INFO L226 Difference]: Without dead ends: 3200 [2019-09-07 23:25:12,869 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 23:25:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2019-09-07 23:25:13,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3152. [2019-09-07 23:25:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3152 states. [2019-09-07 23:25:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 5815 transitions. [2019-09-07 23:25:13,028 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 5815 transitions. Word has length 23 [2019-09-07 23:25:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:13,029 INFO L475 AbstractCegarLoop]: Abstraction has 3152 states and 5815 transitions. [2019-09-07 23:25:13,030 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:25:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 5815 transitions. [2019-09-07 23:25:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-09-07 23:25:13,038 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:13,038 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:25:13,039 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2133994700, now seen corresponding path program 1 times [2019-09-07 23:25:13,040 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:13,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:13,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:13,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:13,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:13,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:25:13,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:25:13,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:25:13,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:25:13,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:25:13,316 INFO L87 Difference]: Start difference. First operand 3152 states and 5815 transitions. Second operand 5 states. [2019-09-07 23:25:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:27,922 INFO L93 Difference]: Finished difference Result 9427 states and 17481 transitions. [2019-09-07 23:25:27,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 23:25:27,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2019-09-07 23:25:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:27,966 INFO L225 Difference]: With dead ends: 9427 [2019-09-07 23:25:27,966 INFO L226 Difference]: Without dead ends: 6281 [2019-09-07 23:25:27,977 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:25:27,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2019-09-07 23:25:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6220. [2019-09-07 23:25:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2019-09-07 23:25:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 9753 transitions. [2019-09-07 23:25:28,226 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 9753 transitions. Word has length 122 [2019-09-07 23:25:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:28,229 INFO L475 AbstractCegarLoop]: Abstraction has 6220 states and 9753 transitions. [2019-09-07 23:25:28,229 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:25:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 9753 transitions. [2019-09-07 23:25:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-09-07 23:25:28,241 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:28,242 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:25:28,242 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash 352565792, now seen corresponding path program 1 times [2019-09-07 23:25:28,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:28,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:28,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:28,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:28,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:28,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:25:28,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:25:28,516 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:25:28,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:25:28,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:25:28,517 INFO L87 Difference]: Start difference. First operand 6220 states and 9753 transitions. Second operand 6 states. [2019-09-07 23:25:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:45,202 INFO L93 Difference]: Finished difference Result 18671 states and 29593 transitions. [2019-09-07 23:25:45,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:25:45,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-09-07 23:25:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:45,267 INFO L225 Difference]: With dead ends: 18671 [2019-09-07 23:25:45,267 INFO L226 Difference]: Without dead ends: 12457 [2019-09-07 23:25:45,284 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:25:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2019-09-07 23:25:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 12227. [2019-09-07 23:25:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12227 states. [2019-09-07 23:25:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12227 states to 12227 states and 18319 transitions. [2019-09-07 23:25:45,626 INFO L78 Accepts]: Start accepts. Automaton has 12227 states and 18319 transitions. Word has length 132 [2019-09-07 23:25:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:45,627 INFO L475 AbstractCegarLoop]: Abstraction has 12227 states and 18319 transitions. [2019-09-07 23:25:45,627 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:25:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 12227 states and 18319 transitions. [2019-09-07 23:25:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-09-07 23:25:45,630 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:45,630 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:25:45,631 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:45,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1629930387, now seen corresponding path program 1 times [2019-09-07 23:25:45,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:45,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:45,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:45,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:45,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:45,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:25:45,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:25:45,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:25:45,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:25:45,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:25:45,887 INFO L87 Difference]: Start difference. First operand 12227 states and 18319 transitions. Second operand 6 states. [2019-09-07 23:26:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:26:03,050 INFO L93 Difference]: Finished difference Result 36643 states and 56300 transitions. [2019-09-07 23:26:03,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:26:03,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2019-09-07 23:26:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:26:03,153 INFO L225 Difference]: With dead ends: 36643 [2019-09-07 23:26:03,154 INFO L226 Difference]: Without dead ends: 24422 [2019-09-07 23:26:03,188 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:26:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24422 states. [2019-09-07 23:26:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24422 to 24022. [2019-09-07 23:26:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24022 states. [2019-09-07 23:26:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 35393 transitions. [2019-09-07 23:26:03,827 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 35393 transitions. Word has length 187 [2019-09-07 23:26:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:26:03,829 INFO L475 AbstractCegarLoop]: Abstraction has 24022 states and 35393 transitions. [2019-09-07 23:26:03,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:26:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 35393 transitions. [2019-09-07 23:26:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-09-07 23:26:03,834 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:26:03,835 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 23:26:03,835 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:26:03,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:26:03,835 INFO L82 PathProgramCache]: Analyzing trace with hash 424542581, now seen corresponding path program 1 times [2019-09-07 23:26:03,836 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:26:03,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:26:03,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:03,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:03,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:26:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:26:04,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:26:04,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-07 23:26:04,226 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:26:04,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:26:04,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:26:04,227 INFO L87 Difference]: Start difference. First operand 24022 states and 35393 transitions. Second operand 7 states. [2019-09-07 23:26:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:26:32,790 INFO L93 Difference]: Finished difference Result 91324 states and 148516 transitions. [2019-09-07 23:26:32,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 23:26:32,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2019-09-07 23:26:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:26:33,035 INFO L225 Difference]: With dead ends: 91324 [2019-09-07 23:26:33,035 INFO L226 Difference]: Without dead ends: 67308 [2019-09-07 23:26:33,147 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:26:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67308 states. [2019-09-07 23:26:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67308 to 66666. [2019-09-07 23:26:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66666 states. [2019-09-07 23:26:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66666 states to 66666 states and 95002 transitions. [2019-09-07 23:26:35,410 INFO L78 Accepts]: Start accepts. Automaton has 66666 states and 95002 transitions. Word has length 239 [2019-09-07 23:26:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:26:35,411 INFO L475 AbstractCegarLoop]: Abstraction has 66666 states and 95002 transitions. [2019-09-07 23:26:35,411 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:26:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 66666 states and 95002 transitions. [2019-09-07 23:26:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2019-09-07 23:26:35,456 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:26:35,458 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:35,459 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:26:35,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:26:35,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1212128983, now seen corresponding path program 1 times [2019-09-07 23:26:35,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:26:35,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:26:35,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:35,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:35,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:26:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:26:37,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:26:37,034 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:26:37,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:26:37,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:26:37,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:26:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:26:38,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:26:38,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:26:38,144 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:26:38,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:26:38,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:26:38,145 INFO L87 Difference]: Start difference. First operand 66666 states and 95002 transitions. Second operand 9 states. [2019-09-07 23:27:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:27:13,929 INFO L93 Difference]: Finished difference Result 199533 states and 331459 transitions. [2019-09-07 23:27:13,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 23:27:13,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 725 [2019-09-07 23:27:13,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:27:14,732 INFO L225 Difference]: With dead ends: 199533 [2019-09-07 23:27:14,733 INFO L226 Difference]: Without dead ends: 132873 [2019-09-07 23:27:15,039 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:27:15,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132873 states. [2019-09-07 23:27:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132873 to 130202. [2019-09-07 23:27:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130202 states. [2019-09-07 23:27:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130202 states to 130202 states and 201822 transitions. [2019-09-07 23:27:23,110 INFO L78 Accepts]: Start accepts. Automaton has 130202 states and 201822 transitions. Word has length 725 [2019-09-07 23:27:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:27:23,113 INFO L475 AbstractCegarLoop]: Abstraction has 130202 states and 201822 transitions. [2019-09-07 23:27:23,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:27:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 130202 states and 201822 transitions. [2019-09-07 23:27:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2019-09-07 23:27:23,148 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:27:23,159 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:23,160 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:27:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:27:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2144569219, now seen corresponding path program 1 times [2019-09-07 23:27:23,162 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:27:23,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:27:23,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:23,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:23,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-09-07 23:27:27,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:27:27,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:27:27,351 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:27:27,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:27:27,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:27:27,352 INFO L87 Difference]: Start difference. First operand 130202 states and 201822 transitions. Second operand 4 states. [2019-09-07 23:27:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:27:43,753 INFO L93 Difference]: Finished difference Result 321410 states and 513795 transitions. [2019-09-07 23:27:43,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:27:43,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 734 [2019-09-07 23:27:43,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:27:44,435 INFO L225 Difference]: With dead ends: 321410 [2019-09-07 23:27:44,435 INFO L226 Difference]: Without dead ends: 191214 [2019-09-07 23:27:44,830 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 23:27:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191214 states. [2019-09-07 23:27:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191214 to 179718. [2019-09-07 23:27:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179718 states. [2019-09-07 23:27:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179718 states to 179718 states and 259464 transitions. [2019-09-07 23:27:50,259 INFO L78 Accepts]: Start accepts. Automaton has 179718 states and 259464 transitions. Word has length 734 [2019-09-07 23:27:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:27:50,261 INFO L475 AbstractCegarLoop]: Abstraction has 179718 states and 259464 transitions. [2019-09-07 23:27:50,261 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:27:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 179718 states and 259464 transitions. [2019-09-07 23:27:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2019-09-07 23:27:50,314 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:27:50,315 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:50,315 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:27:50,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:27:50,316 INFO L82 PathProgramCache]: Analyzing trace with hash -649552266, now seen corresponding path program 1 times [2019-09-07 23:27:50,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:27:50,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:27:50,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:50,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:50,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 368 proven. 293 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-09-07 23:27:53,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:27:53,957 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 23:27:53,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:54,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:27:54,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:27:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2019-09-07 23:27:55,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:27:55,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 16 [2019-09-07 23:27:55,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 23:27:55,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 23:27:55,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-09-07 23:27:55,263 INFO L87 Difference]: Start difference. First operand 179718 states and 259464 transitions. Second operand 16 states. [2019-09-07 23:29:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:29:46,355 INFO L93 Difference]: Finished difference Result 514954 states and 1938469 transitions. [2019-09-07 23:29:46,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2019-09-07 23:29:46,356 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1036 [2019-09-07 23:29:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:30:00,409 INFO L225 Difference]: With dead ends: 514954 [2019-09-07 23:30:00,410 INFO L226 Difference]: Without dead ends: 328973 [2019-09-07 23:30:01,434 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1312 GetRequests, 1147 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11376 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4327, Invalid=23395, Unknown=0, NotChecked=0, Total=27722 [2019-09-07 23:30:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328973 states. [2019-09-07 23:30:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328973 to 317369. [2019-09-07 23:30:33,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317369 states. [2019-09-07 23:30:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317369 states to 317369 states and 996065 transitions. [2019-09-07 23:30:41,595 INFO L78 Accepts]: Start accepts. Automaton has 317369 states and 996065 transitions. Word has length 1036 [2019-09-07 23:30:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:30:41,597 INFO L475 AbstractCegarLoop]: Abstraction has 317369 states and 996065 transitions. [2019-09-07 23:30:41,597 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 23:30:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 317369 states and 996065 transitions. [2019-09-07 23:30:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2019-09-07 23:30:41,631 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:30:41,632 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:41,632 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:30:41,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:30:41,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1391973188, now seen corresponding path program 1 times [2019-09-07 23:30:41,633 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:30:41,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:30:41,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:30:41,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:30:41,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:30:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:30:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 239 proven. 83 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2019-09-07 23:30:51,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:30:51,401 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 23:30:51,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:30:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:30:51,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:30:51,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:30:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 506 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-09-07 23:30:52,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:30:52,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:30:52,057 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:30:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:30:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:30:52,058 INFO L87 Difference]: Start difference. First operand 317369 states and 996065 transitions. Second operand 9 states. [2019-09-07 23:31:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:31:50,859 INFO L93 Difference]: Finished difference Result 679378 states and 2161648 transitions. [2019-09-07 23:31:50,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 23:31:50,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 910 [2019-09-07 23:31:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:31:53,958 INFO L225 Difference]: With dead ends: 679378 [2019-09-07 23:31:53,958 INFO L226 Difference]: Without dead ends: 353829 [2019-09-07 23:31:56,254 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:31:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353829 states. [2019-09-07 23:32:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353829 to 351763. [2019-09-07 23:32:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351763 states. [2019-09-07 23:32:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351763 states to 351763 states and 927178 transitions. [2019-09-07 23:32:39,100 INFO L78 Accepts]: Start accepts. Automaton has 351763 states and 927178 transitions. Word has length 910 [2019-09-07 23:32:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:32:39,101 INFO L475 AbstractCegarLoop]: Abstraction has 351763 states and 927178 transitions. [2019-09-07 23:32:39,101 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:32:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 351763 states and 927178 transitions. [2019-09-07 23:32:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2019-09-07 23:32:39,143 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:32:39,145 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:39,145 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:32:39,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:32:39,146 INFO L82 PathProgramCache]: Analyzing trace with hash 301510685, now seen corresponding path program 1 times [2019-09-07 23:32:39,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:32:39,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:32:39,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:39,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:39,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 234 proven. 201 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2019-09-07 23:32:42,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:32:42,408 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 23:32:42,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:42,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:32:42,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:32:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 598 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-09-07 23:32:53,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:32:53,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:32:53,190 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:32:53,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:32:53,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:32:53,190 INFO L87 Difference]: Start difference. First operand 351763 states and 927178 transitions. Second operand 9 states. [2019-09-07 23:34:06,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:34:06,303 INFO L93 Difference]: Finished difference Result 881813 states and 2446187 transitions. [2019-09-07 23:34:06,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:34:06,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 985 [2019-09-07 23:34:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:34:11,093 INFO L225 Difference]: With dead ends: 881813 [2019-09-07 23:34:11,094 INFO L226 Difference]: Without dead ends: 531455 [2019-09-07 23:34:13,113 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 992 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:34:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531455 states. [2019-09-07 23:34:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531455 to 525369. [2019-09-07 23:34:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525369 states. [2019-09-07 23:35:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525369 states to 525369 states and 1235726 transitions. [2019-09-07 23:35:05,606 INFO L78 Accepts]: Start accepts. Automaton has 525369 states and 1235726 transitions. Word has length 985 [2019-09-07 23:35:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:35:05,608 INFO L475 AbstractCegarLoop]: Abstraction has 525369 states and 1235726 transitions. [2019-09-07 23:35:05,608 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:35:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 525369 states and 1235726 transitions. [2019-09-07 23:35:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2019-09-07 23:35:05,646 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:35:05,647 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:05,647 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:35:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:35:05,658 INFO L82 PathProgramCache]: Analyzing trace with hash 209334228, now seen corresponding path program 1 times [2019-09-07 23:35:05,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:35:05,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:35:05,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:35:05,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:35:05,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:35:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat