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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:05:06,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:05:06,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:05:06,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:05:06,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:05:06,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:05:06,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:05:06,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:05:06,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:05:06,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:05:06,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:05:06,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:05:06,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:05:06,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:05:06,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:05:06,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:05:06,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:05:06,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:05:06,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:05:06,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:05:06,872 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 23:05:06,886 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:05:06,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:05:06,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:05:06,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:05:06,888 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:05:06,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:05:06,888 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:05:06,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:05:06,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:05:06,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:05:06,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:05:06,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:05:06,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:05:06,889 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:05:06,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:05:06,890 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:05:06,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:05:06,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:05:06,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:05:06,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:05:06,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:05:06,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:05:06,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:05:06,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:05:06,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:05:06,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:05:06,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:05:06,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:05:06,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:05:06,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:05:06,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:05:06,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:05:06,939 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:05:06,940 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:05:06,940 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label22.c [2019-09-07 23:05:07,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef379b2e/354cc0c69a3547bfb31363a9413ffb37/FLAGd4e6a518b [2019-09-07 23:05:07,895 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:05:07,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label22.c [2019-09-07 23:05:07,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef379b2e/354cc0c69a3547bfb31363a9413ffb37/FLAGd4e6a518b [2019-09-07 23:05:08,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef379b2e/354cc0c69a3547bfb31363a9413ffb37 [2019-09-07 23:05:08,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:05:08,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:05:08,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:05:08,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:05:08,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:05:08,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:05:08" (1/1) ... [2019-09-07 23:05:08,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50aede7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:08, skipping insertion in model container [2019-09-07 23:05:08,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:05:08" (1/1) ... [2019-09-07 23:05:08,395 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:05:08,641 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:05:10,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:05:10,833 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:05:11,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:05:11,978 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:05:11,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11 WrapperNode [2019-09-07 23:05:11,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:05:11,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:05:11,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:05:11,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:05:11,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (1/1) ... [2019-09-07 23:05:11,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (1/1) ... [2019-09-07 23:05:12,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (1/1) ... [2019-09-07 23:05:12,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (1/1) ... [2019-09-07 23:05:12,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (1/1) ... [2019-09-07 23:05:12,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (1/1) ... [2019-09-07 23:05:12,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (1/1) ... [2019-09-07 23:05:12,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:05:12,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:05:12,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:05:12,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:05:12,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (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 23:05:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:05:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:05:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:05:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:05:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:05:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:05:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:05:12,495 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:05:12,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:05:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:05:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:05:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:05:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:05:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:05:12,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:05:12,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:05:12,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:05:12,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:05:12,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:05:12,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:05:12,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:05:23,088 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:05:23,088 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:05:23,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:05:23 BoogieIcfgContainer [2019-09-07 23:05:23,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:05:23,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:05:23,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:05:23,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:05:23,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:05:08" (1/3) ... [2019-09-07 23:05:23,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c9380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:05:23, skipping insertion in model container [2019-09-07 23:05:23,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:05:11" (2/3) ... [2019-09-07 23:05:23,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c9380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:05:23, skipping insertion in model container [2019-09-07 23:05:23,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:05:23" (3/3) ... [2019-09-07 23:05:23,108 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label22.c [2019-09-07 23:05:23,119 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:05:23,132 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:05:23,152 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:05:23,215 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:05:23,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:05:23,216 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:05:23,217 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:05:23,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:05:23,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:05:23,217 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:05:23,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:05:23,218 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:05:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:05:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-07 23:05:23,296 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:05:23,297 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:05:23,300 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:05:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:05:23,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1442037684, now seen corresponding path program 1 times [2019-09-07 23:05:23,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:05:23,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:05:23,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:23,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:05:23,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:05:23,781 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 23:05:23,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:05:23,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:05:23,792 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:05:23,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:05:23,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:05:23,816 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:05:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:05:36,962 INFO L93 Difference]: Finished difference Result 5031 states and 9496 transitions. [2019-09-07 23:05:36,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:05:36,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-09-07 23:05:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:05:37,003 INFO L225 Difference]: With dead ends: 5031 [2019-09-07 23:05:37,003 INFO L226 Difference]: Without dead ends: 3192 [2019-09-07 23:05:37,016 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 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 23:05:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2019-09-07 23:05:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3145. [2019-09-07 23:05:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2019-09-07 23:05:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5823 transitions. [2019-09-07 23:05:37,208 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5823 transitions. Word has length 35 [2019-09-07 23:05:37,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:05:37,209 INFO L475 AbstractCegarLoop]: Abstraction has 3145 states and 5823 transitions. [2019-09-07 23:05:37,209 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:05:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5823 transitions. [2019-09-07 23:05:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-07 23:05:37,215 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:05:37,215 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:37,215 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:05:37,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:05:37,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1615939192, now seen corresponding path program 1 times [2019-09-07 23:05:37,216 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:05:37,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:05:37,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:37,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:05:37,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:05:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:05:37,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:05:37,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:05:37,492 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:05:37,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:05:37,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:05:37,494 INFO L87 Difference]: Start difference. First operand 3145 states and 5823 transitions. Second operand 6 states. [2019-09-07 23:05:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:05:58,115 INFO L93 Difference]: Finished difference Result 9402 states and 17465 transitions. [2019-09-07 23:05:58,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:05:58,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-07 23:05:58,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:05:58,156 INFO L225 Difference]: With dead ends: 9402 [2019-09-07 23:05:58,156 INFO L226 Difference]: Without dead ends: 6263 [2019-09-07 23:05:58,167 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 23:05:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2019-09-07 23:05:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6157. [2019-09-07 23:05:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6157 states. [2019-09-07 23:05:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 10968 transitions. [2019-09-07 23:05:58,368 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 10968 transitions. Word has length 107 [2019-09-07 23:05:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:05:58,369 INFO L475 AbstractCegarLoop]: Abstraction has 6157 states and 10968 transitions. [2019-09-07 23:05:58,369 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:05:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 10968 transitions. [2019-09-07 23:05:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-09-07 23:05:58,372 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:05:58,372 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:58,372 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:05:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:05:58,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1610718421, now seen corresponding path program 1 times [2019-09-07 23:05:58,373 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:05:58,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:05:58,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:58,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:05:58,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:05:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:05:58,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:05:58,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:05:58,551 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:05:58,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:05:58,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:05:58,552 INFO L87 Difference]: Start difference. First operand 6157 states and 10968 transitions. Second operand 5 states. [2019-09-07 23:06:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:06:16,655 INFO L93 Difference]: Finished difference Result 18589 states and 33342 transitions. [2019-09-07 23:06:16,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:06:16,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-09-07 23:06:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:06:16,749 INFO L225 Difference]: With dead ends: 18589 [2019-09-07 23:06:16,750 INFO L226 Difference]: Without dead ends: 12438 [2019-09-07 23:06:16,769 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 23:06:16,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2019-09-07 23:06:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12168. [2019-09-07 23:06:17,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12168 states. [2019-09-07 23:06:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 18247 transitions. [2019-09-07 23:06:17,153 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 18247 transitions. Word has length 121 [2019-09-07 23:06:17,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:06:17,156 INFO L475 AbstractCegarLoop]: Abstraction has 12168 states and 18247 transitions. [2019-09-07 23:06:17,156 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:06:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 18247 transitions. [2019-09-07 23:06:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-09-07 23:06:17,172 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:06:17,173 INFO L399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:06:17,173 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:06:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:06:17,174 INFO L82 PathProgramCache]: Analyzing trace with hash 704629599, now seen corresponding path program 1 times [2019-09-07 23:06:17,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:06:17,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:06:17,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:17,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:06:17,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:06:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 56 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:06:17,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:06:17,437 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 23:06:17,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:06:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:06:17,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:06:17,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:06:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-09-07 23:06:17,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:06:17,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2019-09-07 23:06:17,670 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:06:17,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:06:17,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:06:17,671 INFO L87 Difference]: Start difference. First operand 12168 states and 18247 transitions. Second operand 7 states. [2019-09-07 23:06:50,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:06:50,728 INFO L93 Difference]: Finished difference Result 48389 states and 78195 transitions. [2019-09-07 23:06:50,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 23:06:50,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2019-09-07 23:06:50,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:06:50,935 INFO L225 Difference]: With dead ends: 48389 [2019-09-07 23:06:50,935 INFO L226 Difference]: Without dead ends: 36227 [2019-09-07 23:06:50,973 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-09-07 23:06:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36227 states. [2019-09-07 23:06:52,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36227 to 35611. [2019-09-07 23:06:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35611 states. [2019-09-07 23:06:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35611 states to 35611 states and 49889 transitions. [2019-09-07 23:06:52,301 INFO L78 Accepts]: Start accepts. Automaton has 35611 states and 49889 transitions. Word has length 210 [2019-09-07 23:06:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:06:52,302 INFO L475 AbstractCegarLoop]: Abstraction has 35611 states and 49889 transitions. [2019-09-07 23:06:52,302 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:06:52,302 INFO L276 IsEmpty]: Start isEmpty. Operand 35611 states and 49889 transitions. [2019-09-07 23:06:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-09-07 23:06:52,308 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:06:52,308 INFO L399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:06:52,309 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:06:52,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:06:52,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1075939526, now seen corresponding path program 1 times [2019-09-07 23:06:52,309 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:06:52,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:06:52,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:52,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:06:52,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:06:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 56 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:06:52,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:06:52,606 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 23:06:52,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:06:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:06:52,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:06:52,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:06:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-09-07 23:06:52,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:06:52,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 23:06:52,877 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:06:52,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:06:52,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:06:52,878 INFO L87 Difference]: Start difference. First operand 35611 states and 49889 transitions. Second operand 9 states. [2019-09-07 23:07:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:07:31,909 INFO L93 Difference]: Finished difference Result 135098 states and 227765 transitions. [2019-09-07 23:07:31,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-09-07 23:07:31,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 285 [2019-09-07 23:07:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:07:32,324 INFO L225 Difference]: With dead ends: 135098 [2019-09-07 23:07:32,325 INFO L226 Difference]: Without dead ends: 99493 [2019-09-07 23:07:32,448 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 23:07:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99493 states. [2019-09-07 23:07:37,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99493 to 96688. [2019-09-07 23:07:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96688 states. [2019-09-07 23:07:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96688 states to 96688 states and 145068 transitions. [2019-09-07 23:07:37,779 INFO L78 Accepts]: Start accepts. Automaton has 96688 states and 145068 transitions. Word has length 285 [2019-09-07 23:07:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:07:37,780 INFO L475 AbstractCegarLoop]: Abstraction has 96688 states and 145068 transitions. [2019-09-07 23:07:37,780 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:07:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 96688 states and 145068 transitions. [2019-09-07 23:07:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2019-09-07 23:07:37,791 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:07:37,792 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:37,792 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:07:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:07:37,792 INFO L82 PathProgramCache]: Analyzing trace with hash -41878870, now seen corresponding path program 1 times [2019-09-07 23:07:37,793 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:07:37,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:07:37,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:07:37,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:07:37,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:07:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:07:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 23:07:38,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:07:38,296 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 23:07:38,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:07:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:07:39,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:07:39,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:07:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:07:39,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:07:39,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-09-07 23:07:39,264 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:07:39,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:07:39,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:07:39,265 INFO L87 Difference]: Start difference. First operand 96688 states and 145068 transitions. Second operand 5 states. [2019-09-07 23:07:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:07:59,308 INFO L93 Difference]: Finished difference Result 287673 states and 450799 transitions. [2019-09-07 23:07:59,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:07:59,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 543 [2019-09-07 23:07:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:07:59,930 INFO L225 Difference]: With dead ends: 287673 [2019-09-07 23:07:59,930 INFO L226 Difference]: Without dead ends: 190991 [2019-09-07 23:08:00,106 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 547 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:08:03,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190991 states. [2019-09-07 23:08:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190991 to 167056. [2019-09-07 23:08:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167056 states. [2019-09-07 23:08:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167056 states to 167056 states and 243306 transitions. [2019-09-07 23:08:07,067 INFO L78 Accepts]: Start accepts. Automaton has 167056 states and 243306 transitions. Word has length 543 [2019-09-07 23:08:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:08:07,068 INFO L475 AbstractCegarLoop]: Abstraction has 167056 states and 243306 transitions. [2019-09-07 23:08:07,068 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:08:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 167056 states and 243306 transitions. [2019-09-07 23:08:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2019-09-07 23:08:07,113 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:08:07,114 INFO L399 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:07,114 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:08:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:08:07,114 INFO L82 PathProgramCache]: Analyzing trace with hash -986237258, now seen corresponding path program 1 times [2019-09-07 23:08:07,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:08:07,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:08:07,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:08:07,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:08:07,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:08:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:08:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 189 proven. 140 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-09-07 23:08:08,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:08:08,973 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 23:08:08,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:08:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:08:09,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:08:09,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:08:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2019-09-07 23:08:10,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:08:10,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:08:10,212 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:08:10,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:08:10,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:08:10,213 INFO L87 Difference]: Start difference. First operand 167056 states and 243306 transitions. Second operand 7 states. [2019-09-07 23:08:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:08:55,024 INFO L93 Difference]: Finished difference Result 528778 states and 897817 transitions. [2019-09-07 23:08:55,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 23:08:55,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 929 [2019-09-07 23:08:55,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:08:57,349 INFO L225 Difference]: With dead ends: 528778 [2019-09-07 23:08:57,349 INFO L226 Difference]: Without dead ends: 361728 [2019-09-07 23:08:57,617 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 939 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-09-07 23:08:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361728 states. [2019-09-07 23:09:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361728 to 360027. [2019-09-07 23:09:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360027 states. [2019-09-07 23:09:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360027 states to 360027 states and 573238 transitions. [2019-09-07 23:09:11,385 INFO L78 Accepts]: Start accepts. Automaton has 360027 states and 573238 transitions. Word has length 929 [2019-09-07 23:09:11,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:09:11,386 INFO L475 AbstractCegarLoop]: Abstraction has 360027 states and 573238 transitions. [2019-09-07 23:09:11,386 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:09:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 360027 states and 573238 transitions. [2019-09-07 23:09:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2019-09-07 23:09:11,430 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:09:11,431 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:09:11,431 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:09:11,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:09:11,432 INFO L82 PathProgramCache]: Analyzing trace with hash -907406210, now seen corresponding path program 1 times [2019-09-07 23:09:11,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:09:11,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:09:11,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:11,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:11,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 363 proven. 69 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2019-09-07 23:09:18,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:09:18,639 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:09:18,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:18,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:09:18,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:09:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 811 proven. 2 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2019-09-07 23:09:19,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:09:19,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-07 23:09:19,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 23:09:19,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 23:09:19,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:09:19,391 INFO L87 Difference]: Start difference. First operand 360027 states and 573238 transitions. Second operand 10 states. [2019-09-07 23:10:42,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:42,491 INFO L93 Difference]: Finished difference Result 1006433 states and 1878461 transitions. [2019-09-07 23:10:42,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2019-09-07 23:10:42,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1033 [2019-09-07 23:10:42,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:46,313 INFO L225 Difference]: With dead ends: 1006433 [2019-09-07 23:10:46,314 INFO L226 Difference]: Without dead ends: 621936 [2019-09-07 23:10:46,980 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 1098 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2360 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1052, Invalid=5428, Unknown=0, NotChecked=0, Total=6480 [2019-09-07 23:10:47,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621936 states. [2019-09-07 23:11:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621936 to 601587. [2019-09-07 23:11:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601587 states. [2019-09-07 23:11:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601587 states to 601587 states and 1024622 transitions. [2019-09-07 23:11:30,545 INFO L78 Accepts]: Start accepts. Automaton has 601587 states and 1024622 transitions. Word has length 1033 [2019-09-07 23:11:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:11:30,547 INFO L475 AbstractCegarLoop]: Abstraction has 601587 states and 1024622 transitions. [2019-09-07 23:11:30,547 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 23:11:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 601587 states and 1024622 transitions. [2019-09-07 23:11:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1308 [2019-09-07 23:11:30,596 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:11:30,598 INFO L399 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:30,598 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:11:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:11:30,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1571869169, now seen corresponding path program 1 times [2019-09-07 23:11:30,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:11:30,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:11:30,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:30,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:11:30,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:11:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2019-09-07 23:11:41,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:11:41,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:11:41,274 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:11:41,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:11:41,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:11:41,276 INFO L87 Difference]: Start difference. First operand 601587 states and 1024622 transitions. Second operand 4 states. [2019-09-07 23:12:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:12:39,691 INFO L93 Difference]: Finished difference Result 1432705 states and 2572953 transitions. [2019-09-07 23:12:39,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:12:39,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1307 [2019-09-07 23:12:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:12:45,882 INFO L225 Difference]: With dead ends: 1432705 [2019-09-07 23:12:45,883 INFO L226 Difference]: Without dead ends: 828257 [2019-09-07 23:12:47,679 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 23:12:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828257 states. [2019-09-07 23:13:28,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828257 to 818070. [2019-09-07 23:13:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818070 states.