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/Problem14_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:03:32,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:03:32,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:03:32,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:03:32,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:03:32,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:03:32,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:03:32,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:03:32,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:03:32,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:03:32,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:03:32,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:03:32,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:03:32,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:03:32,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:03:32,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:03:32,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:03:32,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:03:32,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:03:32,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:03:32,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:03:32,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:03:32,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:03:32,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:03:32,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:03:32,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:03:32,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:03:32,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:03:32,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:03:32,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:03:32,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:03:32,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:03:32,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:03:32,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:03:32,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:03:32,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:03:32,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:03:32,155 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:03:32,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:03:32,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:03:32,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:03:32,161 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:03:32,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:03:32,161 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:03:32,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:03:32,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:03:32,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:03:32,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:03:32,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:03:32,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:03:32,164 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:03:32,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:03:32,164 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:03:32,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:03:32,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:03:32,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:03:32,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:03:32,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:03:32,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:03:32,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:03:32,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:03:32,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:03:32,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:03:32,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:03:32,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:03:32,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:03:32,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:03:32,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:03:32,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:03:32,469 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:03:32,470 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:03:32,471 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label55.c [2019-10-13 18:03:32,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3c9ddea/934871cee1a24b0990e989236fb75858/FLAGa8eedf53a [2019-10-13 18:03:33,176 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:03:33,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label55.c [2019-10-13 18:03:33,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3c9ddea/934871cee1a24b0990e989236fb75858/FLAGa8eedf53a [2019-10-13 18:03:33,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3c9ddea/934871cee1a24b0990e989236fb75858 [2019-10-13 18:03:33,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:03:33,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:03:33,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:03:33,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:03:33,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:03:33,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:03:33" (1/1) ... [2019-10-13 18:03:33,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b6da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:33, skipping insertion in model container [2019-10-13 18:03:33,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:03:33" (1/1) ... [2019-10-13 18:03:33,468 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:03:33,532 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:03:34,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:03:34,115 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:03:34,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:03:34,310 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:03:34,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34 WrapperNode [2019-10-13 18:03:34,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:03:34,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:03:34,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:03:34,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:03:34,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (1/1) ... [2019-10-13 18:03:34,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (1/1) ... [2019-10-13 18:03:34,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (1/1) ... [2019-10-13 18:03:34,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (1/1) ... [2019-10-13 18:03:34,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (1/1) ... [2019-10-13 18:03:34,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (1/1) ... [2019-10-13 18:03:34,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (1/1) ... [2019-10-13 18:03:34,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:03:34,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:03:34,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:03:34,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:03:34,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:03:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:03:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:03:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:03:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:03:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:03:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:03:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:03:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:03:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:03:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:03:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:03:35,896 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:03:35,896 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:03:35,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:03:35 BoogieIcfgContainer [2019-10-13 18:03:35,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:03:35,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:03:35,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:03:35,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:03:35,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:03:33" (1/3) ... [2019-10-13 18:03:35,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b634b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:03:35, skipping insertion in model container [2019-10-13 18:03:35,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:34" (2/3) ... [2019-10-13 18:03:35,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b634b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:03:35, skipping insertion in model container [2019-10-13 18:03:35,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:03:35" (3/3) ... [2019-10-13 18:03:35,906 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label55.c [2019-10-13 18:03:35,916 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:03:35,925 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:03:35,936 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:03:35,965 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:03:35,965 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:03:35,965 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:03:35,965 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:03:35,965 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:03:35,966 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:03:35,966 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:03:35,966 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:03:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-10-13 18:03:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-13 18:03:36,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:36,002 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:03:36,004 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash 606791250, now seen corresponding path program 1 times [2019-10-13 18:03:36,019 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:36,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869917108] [2019-10-13 18:03:36,019 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:36,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:36,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:36,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869917108] [2019-10-13 18:03:36,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:03:36,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:03:36,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853511289] [2019-10-13 18:03:36,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:03:36,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:36,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:03:36,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:03:36,458 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2019-10-13 18:03:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:39,121 INFO L93 Difference]: Finished difference Result 902 states and 1627 transitions. [2019-10-13 18:03:39,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:03:39,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2019-10-13 18:03:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:39,143 INFO L225 Difference]: With dead ends: 902 [2019-10-13 18:03:39,144 INFO L226 Difference]: Without dead ends: 564 [2019-10-13 18:03:39,153 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-13 18:03:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2019-10-13 18:03:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-10-13 18:03:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 812 transitions. [2019-10-13 18:03:39,278 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 812 transitions. Word has length 63 [2019-10-13 18:03:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:39,279 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 812 transitions. [2019-10-13 18:03:39,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:03:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 812 transitions. [2019-10-13 18:03:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 18:03:39,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:39,301 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:03:39,302 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash 905975074, now seen corresponding path program 1 times [2019-10-13 18:03:39,302 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:39,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170597311] [2019-10-13 18:03:39,303 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:39,303 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:39,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:39,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170597311] [2019-10-13 18:03:39,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906120810] [2019-10-13 18:03:39,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:39,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:03:39,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:39,862 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:39,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:03:39,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400775848] [2019-10-13 18:03:39,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:03:39,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:39,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:03:39,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:39,866 INFO L87 Difference]: Start difference. First operand 560 states and 812 transitions. Second operand 3 states. [2019-10-13 18:03:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:40,740 INFO L93 Difference]: Finished difference Result 1666 states and 2449 transitions. [2019-10-13 18:03:40,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:03:40,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 18:03:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:40,749 INFO L225 Difference]: With dead ends: 1666 [2019-10-13 18:03:40,749 INFO L226 Difference]: Without dead ends: 1112 [2019-10-13 18:03:40,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-10-13 18:03:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-10-13 18:03:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-10-13 18:03:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1563 transitions. [2019-10-13 18:03:40,800 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1563 transitions. Word has length 175 [2019-10-13 18:03:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:40,801 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1563 transitions. [2019-10-13 18:03:40,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:03:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1563 transitions. [2019-10-13 18:03:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 18:03:40,806 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:40,806 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:03:41,009 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:41,010 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:41,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1147690534, now seen corresponding path program 1 times [2019-10-13 18:03:41,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:41,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191246536] [2019-10-13 18:03:41,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:41,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:41,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:41,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191246536] [2019-10-13 18:03:41,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052606997] [2019-10-13 18:03:41,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:41,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:03:41,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:41,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:41,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:03:41,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008158146] [2019-10-13 18:03:41,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:03:41,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:41,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:03:41,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:41,503 INFO L87 Difference]: Start difference. First operand 1112 states and 1563 transitions. Second operand 3 states. [2019-10-13 18:03:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:42,378 INFO L93 Difference]: Finished difference Result 3138 states and 4515 transitions. [2019-10-13 18:03:42,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:03:42,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-13 18:03:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:42,392 INFO L225 Difference]: With dead ends: 3138 [2019-10-13 18:03:42,392 INFO L226 Difference]: Without dead ends: 2032 [2019-10-13 18:03:42,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:03:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2019-10-13 18:03:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2032. [2019-10-13 18:03:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2032 states. [2019-10-13 18:03:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 2761 transitions. [2019-10-13 18:03:42,474 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 2761 transitions. Word has length 193 [2019-10-13 18:03:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:42,476 INFO L462 AbstractCegarLoop]: Abstraction has 2032 states and 2761 transitions. [2019-10-13 18:03:42,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:03:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 2761 transitions. [2019-10-13 18:03:42,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 18:03:42,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:42,484 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 18:03:42,687 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:42,688 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:42,688 INFO L82 PathProgramCache]: Analyzing trace with hash -326826355, now seen corresponding path program 1 times [2019-10-13 18:03:42,689 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:42,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727544544] [2019-10-13 18:03:42,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:42,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:42,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:03:43,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727544544] [2019-10-13 18:03:43,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533235829] [2019-10-13 18:03:43,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:43,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:03:43,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:03:43,292 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:03:43,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:03:43,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317159263] [2019-10-13 18:03:43,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:03:43,294 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:43,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:03:43,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:03:43,295 INFO L87 Difference]: Start difference. First operand 2032 states and 2761 transitions. Second operand 11 states. [2019-10-13 18:03:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:50,202 INFO L93 Difference]: Finished difference Result 7284 states and 12592 transitions. [2019-10-13 18:03:50,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 18:03:50,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2019-10-13 18:03:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:50,261 INFO L225 Difference]: With dead ends: 7284 [2019-10-13 18:03:50,261 INFO L226 Difference]: Without dead ends: 4270 [2019-10-13 18:03:50,281 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=395, Invalid=1675, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 18:03:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2019-10-13 18:03:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 4022. [2019-10-13 18:03:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4022 states. [2019-10-13 18:03:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 5751 transitions. [2019-10-13 18:03:50,486 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 5751 transitions. Word has length 222 [2019-10-13 18:03:50,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:50,486 INFO L462 AbstractCegarLoop]: Abstraction has 4022 states and 5751 transitions. [2019-10-13 18:03:50,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 18:03:50,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 5751 transitions. [2019-10-13 18:03:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-13 18:03:50,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:50,495 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:03:50,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:50,700 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:50,701 INFO L82 PathProgramCache]: Analyzing trace with hash 718952513, now seen corresponding path program 1 times [2019-10-13 18:03:50,703 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:50,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165452989] [2019-10-13 18:03:50,704 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:50,704 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:50,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 18:03:51,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165452989] [2019-10-13 18:03:51,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597218677] [2019-10-13 18:03:51,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:51,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:03:51,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-13 18:03:51,351 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:51,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2019-10-13 18:03:51,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306853497] [2019-10-13 18:03:51,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:03:51,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:03:51,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-13 18:03:51,354 INFO L87 Difference]: Start difference. First operand 4022 states and 5751 transitions. Second operand 3 states. [2019-10-13 18:03:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:52,190 INFO L93 Difference]: Finished difference Result 8992 states and 13296 transitions. [2019-10-13 18:03:52,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:03:52,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2019-10-13 18:03:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:52,223 INFO L225 Difference]: With dead ends: 8992 [2019-10-13 18:03:52,223 INFO L226 Difference]: Without dead ends: 4976 [2019-10-13 18:03:52,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-13 18:03:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2019-10-13 18:03:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4976. [2019-10-13 18:03:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4976 states. [2019-10-13 18:03:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 7174 transitions. [2019-10-13 18:03:52,444 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 7174 transitions. Word has length 248 [2019-10-13 18:03:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:52,445 INFO L462 AbstractCegarLoop]: Abstraction has 4976 states and 7174 transitions. [2019-10-13 18:03:52,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:03:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 7174 transitions. [2019-10-13 18:03:52,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-10-13 18:03:52,458 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:52,458 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:03:52,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:52,662 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:52,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1823817087, now seen corresponding path program 1 times [2019-10-13 18:03:52,663 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:52,663 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935873018] [2019-10-13 18:03:52,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:52,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:52,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-13 18:03:52,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935873018] [2019-10-13 18:03:52,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379683685] [2019-10-13 18:03:52,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:53,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:03:53,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-13 18:03:53,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:53,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-13 18:03:53,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410968828] [2019-10-13 18:03:53,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:03:53,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:53,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:03:53,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:03:53,109 INFO L87 Difference]: Start difference. First operand 4976 states and 7174 transitions. Second operand 3 states. [2019-10-13 18:03:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:54,162 INFO L93 Difference]: Finished difference Result 10628 states and 15311 transitions. [2019-10-13 18:03:54,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:03:54,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 280 [2019-10-13 18:03:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:54,196 INFO L225 Difference]: With dead ends: 10628 [2019-10-13 18:03:54,196 INFO L226 Difference]: Without dead ends: 5730 [2019-10-13 18:03:54,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:03:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5730 states. [2019-10-13 18:03:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5730 to 5540. [2019-10-13 18:03:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5540 states. [2019-10-13 18:03:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 8221 transitions. [2019-10-13 18:03:54,393 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 8221 transitions. Word has length 280 [2019-10-13 18:03:54,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:54,394 INFO L462 AbstractCegarLoop]: Abstraction has 5540 states and 8221 transitions. [2019-10-13 18:03:54,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:03:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 8221 transitions. [2019-10-13 18:03:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-10-13 18:03:54,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:54,407 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:03:54,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:54,612 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:54,612 INFO L82 PathProgramCache]: Analyzing trace with hash -366566147, now seen corresponding path program 1 times [2019-10-13 18:03:54,613 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:54,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280324206] [2019-10-13 18:03:54,613 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:54,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:54,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 163 proven. 60 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:03:55,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280324206] [2019-10-13 18:03:55,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604568259] [2019-10-13 18:03:55,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:55,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 18:03:55,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:55,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:03:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 18:03:55,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:55,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2019-10-13 18:03:55,772 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627458654] [2019-10-13 18:03:55,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:03:55,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:55,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:03:55,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:03:55,775 INFO L87 Difference]: Start difference. First operand 5540 states and 8221 transitions. Second operand 5 states. [2019-10-13 18:03:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:57,117 INFO L93 Difference]: Finished difference Result 11654 states and 17270 transitions. [2019-10-13 18:03:57,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 18:03:57,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2019-10-13 18:03:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:57,151 INFO L225 Difference]: With dead ends: 11654 [2019-10-13 18:03:57,152 INFO L226 Difference]: Without dead ends: 6120 [2019-10-13 18:03:57,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2019-10-13 18:03:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6120 states. [2019-10-13 18:03:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6120 to 6116. [2019-10-13 18:03:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6116 states. [2019-10-13 18:03:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 8955 transitions. [2019-10-13 18:03:57,362 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 8955 transitions. Word has length 294 [2019-10-13 18:03:57,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:57,362 INFO L462 AbstractCegarLoop]: Abstraction has 6116 states and 8955 transitions. [2019-10-13 18:03:57,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:03:57,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 8955 transitions. [2019-10-13 18:03:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2019-10-13 18:03:57,387 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:57,388 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:03:57,593 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:57,593 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:57,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:57,594 INFO L82 PathProgramCache]: Analyzing trace with hash -176257439, now seen corresponding path program 1 times [2019-10-13 18:03:57,594 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:57,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949709918] [2019-10-13 18:03:57,598 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:57,598 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:57,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 168 proven. 130 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-10-13 18:03:57,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949709918] [2019-10-13 18:03:57,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797159112] [2019-10-13 18:03:57,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:58,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 18:03:58,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:03:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2019-10-13 18:03:58,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:03:58,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2019-10-13 18:03:58,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314014095] [2019-10-13 18:03:58,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:03:58,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:03:58,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:03:58,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 18:03:58,256 INFO L87 Difference]: Start difference. First operand 6116 states and 8955 transitions. Second operand 5 states. [2019-10-13 18:03:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:03:59,402 INFO L93 Difference]: Finished difference Result 11192 states and 15949 transitions. [2019-10-13 18:03:59,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:03:59,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 364 [2019-10-13 18:03:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:03:59,431 INFO L225 Difference]: With dead ends: 11192 [2019-10-13 18:03:59,431 INFO L226 Difference]: Without dead ends: 5448 [2019-10-13 18:03:59,454 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:03:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5448 states. [2019-10-13 18:03:59,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5448 to 5218. [2019-10-13 18:03:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5218 states. [2019-10-13 18:03:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 6538 transitions. [2019-10-13 18:03:59,638 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 6538 transitions. Word has length 364 [2019-10-13 18:03:59,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:03:59,638 INFO L462 AbstractCegarLoop]: Abstraction has 5218 states and 6538 transitions. [2019-10-13 18:03:59,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:03:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 6538 transitions. [2019-10-13 18:03:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2019-10-13 18:03:59,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:03:59,650 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2019-10-13 18:03:59,860 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:03:59,861 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:03:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:03:59,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1917381211, now seen corresponding path program 1 times [2019-10-13 18:03:59,861 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:03:59,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002892858] [2019-10-13 18:03:59,862 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:59,862 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:03:59,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:03:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:03:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 178 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 18:04:01,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002892858] [2019-10-13 18:04:01,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092412501] [2019-10-13 18:04:01,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:01,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-13 18:04:01,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:01,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-13 18:04:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 338 proven. 53 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 18:04:01,837 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:04:01,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 16 [2019-10-13 18:04:01,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174818424] [2019-10-13 18:04:01,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 18:04:01,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:01,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 18:04:01,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:04:01,839 INFO L87 Difference]: Start difference. First operand 5218 states and 6538 transitions. Second operand 16 states. [2019-10-13 18:04:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:05,356 INFO L93 Difference]: Finished difference Result 10554 states and 13248 transitions. [2019-10-13 18:04:05,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 18:04:05,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 378 [2019-10-13 18:04:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:05,372 INFO L225 Difference]: With dead ends: 10554 [2019-10-13 18:04:05,372 INFO L226 Difference]: Without dead ends: 5475 [2019-10-13 18:04:05,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 18:04:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2019-10-13 18:04:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 5406. [2019-10-13 18:04:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5406 states. [2019-10-13 18:04:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 6331 transitions. [2019-10-13 18:04:05,485 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 6331 transitions. Word has length 378 [2019-10-13 18:04:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:05,485 INFO L462 AbstractCegarLoop]: Abstraction has 5406 states and 6331 transitions. [2019-10-13 18:04:05,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 18:04:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 6331 transitions. [2019-10-13 18:04:05,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2019-10-13 18:04:05,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:05,501 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:05,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:05,715 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1222870619, now seen corresponding path program 1 times [2019-10-13 18:04:05,717 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:05,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906063036] [2019-10-13 18:04:05,718 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:05,718 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:05,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 414 proven. 115 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2019-10-13 18:04:07,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906063036] [2019-10-13 18:04:07,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438484648] [2019-10-13 18:04:07,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:07,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 18:04:07,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:07,485 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 18:04:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2019-10-13 18:04:07,748 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:04:07,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2019-10-13 18:04:07,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362881195] [2019-10-13 18:04:07,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:04:07,752 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:07,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:04:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:04:07,753 INFO L87 Difference]: Start difference. First operand 5406 states and 6331 transitions. Second operand 5 states. [2019-10-13 18:04:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:08,792 INFO L93 Difference]: Finished difference Result 10806 states and 12734 transitions. [2019-10-13 18:04:08,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 18:04:08,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2019-10-13 18:04:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted.