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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:54:38,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:54:38,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:54:38,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 22:54:38,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:54:38,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:54:38,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:54:38,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:54:38,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:54:38,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:54:38,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:54:38,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:54:38,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:54:38,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:54:38,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:54:38,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:54:38,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 22:54:38,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 22:54:38,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 22:54:38,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 22:54:38,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 22:54:38,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 22:54:38,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 22:54:38,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 22:54:38,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 22:54:38,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:54:38,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:54:38,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:54:38,268 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 22:54:38,281 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:54:38,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:54:38,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:54:38,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:54:38,283 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:54:38,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:54:38,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:54:38,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:54:38,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:54:38,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:54:38,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:54:38,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:54:38,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:54:38,285 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:54:38,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:54:38,286 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:54:38,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:54:38,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:54:38,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:54:38,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:54:38,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:54:38,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:54:38,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:54:38,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:54:38,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:54:38,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:54:38,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:54:38,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:54:38,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:54:38,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:54:38,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:54:38,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:54:38,337 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:54:38,337 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:54:38,338 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label07.c [2019-09-07 22:54:38,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d6740fd/d83246c2bef54e2889c5cd6c00855722/FLAG3dcf96ed7 [2019-09-07 22:54:39,446 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:54:39,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label07.c [2019-09-07 22:54:39,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d6740fd/d83246c2bef54e2889c5cd6c00855722/FLAG3dcf96ed7 [2019-09-07 22:54:39,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d6740fd/d83246c2bef54e2889c5cd6c00855722 [2019-09-07 22:54:39,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:54:39,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:54:39,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:54:39,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:54:39,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:54:39,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:54:39" (1/1) ... [2019-09-07 22:54:39,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d84a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:39, skipping insertion in model container [2019-09-07 22:54:39,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:54:39" (1/1) ... [2019-09-07 22:54:39,780 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:54:39,990 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:54:42,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:54:42,185 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:54:43,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:54:43,323 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:54:43,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43 WrapperNode [2019-09-07 22:54:43,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:54:43,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:54:43,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:54:43,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:54:43,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (1/1) ... [2019-09-07 22:54:43,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (1/1) ... [2019-09-07 22:54:43,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (1/1) ... [2019-09-07 22:54:43,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (1/1) ... [2019-09-07 22:54:43,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (1/1) ... [2019-09-07 22:54:43,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (1/1) ... [2019-09-07 22:54:43,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (1/1) ... [2019-09-07 22:54:43,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:54:43,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:54:43,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:54:43,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:54:43,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (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 22:54:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:54:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:54:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:54:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:54:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 22:54:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 22:54:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 22:54:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 22:54:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:54:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:54:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:54:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 22:54:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 22:54:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 22:54:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 22:54:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:54:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:54:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:54:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:54:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:54:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:54:54,910 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:54:54,911 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:54:54,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:54:54 BoogieIcfgContainer [2019-09-07 22:54:54,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:54:54,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:54:54,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:54:54,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:54:54,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:54:39" (1/3) ... [2019-09-07 22:54:54,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748a8cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:54:54, skipping insertion in model container [2019-09-07 22:54:54,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:54:43" (2/3) ... [2019-09-07 22:54:54,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748a8cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:54:54, skipping insertion in model container [2019-09-07 22:54:54,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:54:54" (3/3) ... [2019-09-07 22:54:54,923 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label07.c [2019-09-07 22:54:54,933 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:54:54,946 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:54:54,964 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:54:55,014 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:54:55,015 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:54:55,015 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:54:55,015 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:54:55,015 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:54:55,016 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:54:55,016 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:54:55,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:54:55,016 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:54:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 22:54:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-07 22:54:55,074 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:54:55,075 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:54:55,077 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:54:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:54:55,081 INFO L82 PathProgramCache]: Analyzing trace with hash -62108620, now seen corresponding path program 1 times [2019-09-07 22:54:55,083 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:54:55,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:54:55,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:54:55,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:54:55,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:54:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:54:55,413 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 22:54:55,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:54:55,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:54:55,422 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:54:55,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:54:55,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:54:55,439 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-07 22:55:12,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:55:12,812 INFO L93 Difference]: Finished difference Result 6461 states and 12328 transitions. [2019-09-07 22:55:12,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:55:12,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2019-09-07 22:55:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:55:12,869 INFO L225 Difference]: With dead ends: 6461 [2019-09-07 22:55:12,869 INFO L226 Difference]: Without dead ends: 4602 [2019-09-07 22:55:12,882 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:55:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2019-09-07 22:55:13,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 3138. [2019-09-07 22:55:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2019-09-07 22:55:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4994 transitions. [2019-09-07 22:55:13,106 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4994 transitions. Word has length 67 [2019-09-07 22:55:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:55:13,109 INFO L475 AbstractCegarLoop]: Abstraction has 3138 states and 4994 transitions. [2019-09-07 22:55:13,109 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:55:13,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4994 transitions. [2019-09-07 22:55:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-07 22:55:13,123 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:55:13,123 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:55:13,124 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:55:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:55:13,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1687702184, now seen corresponding path program 1 times [2019-09-07 22:55:13,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:55:13,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:55:13,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:13,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:55:13,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:55:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:55:13,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:55:13,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:55:13,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:55:13,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:55:13,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:55:13,472 INFO L87 Difference]: Start difference. First operand 3138 states and 4994 transitions. Second operand 6 states. [2019-09-07 22:55:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:55:28,475 INFO L93 Difference]: Finished difference Result 9253 states and 14826 transitions. [2019-09-07 22:55:28,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:55:28,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2019-09-07 22:55:28,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:55:28,506 INFO L225 Difference]: With dead ends: 9253 [2019-09-07 22:55:28,507 INFO L226 Difference]: Without dead ends: 6121 [2019-09-07 22:55:28,515 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:55:28,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2019-09-07 22:55:28,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 6066. [2019-09-07 22:55:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2019-09-07 22:55:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 9392 transitions. [2019-09-07 22:55:28,690 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 9392 transitions. Word has length 138 [2019-09-07 22:55:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:55:28,692 INFO L475 AbstractCegarLoop]: Abstraction has 6066 states and 9392 transitions. [2019-09-07 22:55:28,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:55:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 9392 transitions. [2019-09-07 22:55:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-09-07 22:55:28,704 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:55:28,705 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:55:28,705 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:55:28,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:55:28,707 INFO L82 PathProgramCache]: Analyzing trace with hash -607340246, now seen corresponding path program 1 times [2019-09-07 22:55:28,707 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:55:28,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:55:28,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:28,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:55:28,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:55:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:55:28,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:55:28,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:55:28,870 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:55:28,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:55:28,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:55:28,871 INFO L87 Difference]: Start difference. First operand 6066 states and 9392 transitions. Second operand 6 states. [2019-09-07 22:55:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:55:44,251 INFO L93 Difference]: Finished difference Result 18441 states and 28957 transitions. [2019-09-07 22:55:44,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 22:55:44,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-09-07 22:55:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:55:44,332 INFO L225 Difference]: With dead ends: 18441 [2019-09-07 22:55:44,332 INFO L226 Difference]: Without dead ends: 12381 [2019-09-07 22:55:44,354 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 22:55:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2019-09-07 22:55:44,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12205. [2019-09-07 22:55:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12205 states. [2019-09-07 22:55:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12205 states to 12205 states and 18449 transitions. [2019-09-07 22:55:44,671 INFO L78 Accepts]: Start accepts. Automaton has 12205 states and 18449 transitions. Word has length 148 [2019-09-07 22:55:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:55:44,674 INFO L475 AbstractCegarLoop]: Abstraction has 12205 states and 18449 transitions. [2019-09-07 22:55:44,674 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:55:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12205 states and 18449 transitions. [2019-09-07 22:55:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-07 22:55:44,678 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:55:44,678 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:55:44,678 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:55:44,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:55:44,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1023595776, now seen corresponding path program 1 times [2019-09-07 22:55:44,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:55:44,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:55:44,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:44,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:55:44,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:55:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:55:44,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:55:44,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 22:55:44,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 22:55:44,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 22:55:44,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 22:55:44,947 INFO L87 Difference]: Start difference. First operand 12205 states and 18449 transitions. Second operand 5 states. [2019-09-07 22:56:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:56:02,792 INFO L93 Difference]: Finished difference Result 37286 states and 57430 transitions. [2019-09-07 22:56:02,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 22:56:02,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2019-09-07 22:56:02,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:56:02,881 INFO L225 Difference]: With dead ends: 37286 [2019-09-07 22:56:02,882 INFO L226 Difference]: Without dead ends: 25087 [2019-09-07 22:56:02,919 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 22:56:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25087 states. [2019-09-07 22:56:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25087 to 24484. [2019-09-07 22:56:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24484 states. [2019-09-07 22:56:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24484 states to 24484 states and 33068 transitions. [2019-09-07 22:56:03,519 INFO L78 Accepts]: Start accepts. Automaton has 24484 states and 33068 transitions. Word has length 168 [2019-09-07 22:56:03,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:56:03,519 INFO L475 AbstractCegarLoop]: Abstraction has 24484 states and 33068 transitions. [2019-09-07 22:56:03,520 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 22:56:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 24484 states and 33068 transitions. [2019-09-07 22:56:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-09-07 22:56:03,527 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:56:03,527 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:56:03,528 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:56:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:56:03,529 INFO L82 PathProgramCache]: Analyzing trace with hash 300224387, now seen corresponding path program 1 times [2019-09-07 22:56:03,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:56:03,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:56:03,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:56:03,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:56:03,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:56:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:56:03,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:56:03,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:56:03,761 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:56:03,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:56:03,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:56:03,764 INFO L87 Difference]: Start difference. First operand 24484 states and 33068 transitions. Second operand 6 states. [2019-09-07 22:56:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:56:17,216 INFO L93 Difference]: Finished difference Result 61316 states and 84697 transitions. [2019-09-07 22:56:17,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:56:17,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2019-09-07 22:56:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:56:17,342 INFO L225 Difference]: With dead ends: 61316 [2019-09-07 22:56:17,343 INFO L226 Difference]: Without dead ends: 36838 [2019-09-07 22:56:17,398 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:56:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36838 states. [2019-09-07 22:56:18,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36838 to 36526. [2019-09-07 22:56:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36526 states. [2019-09-07 22:56:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36526 states to 36526 states and 47833 transitions. [2019-09-07 22:56:18,185 INFO L78 Accepts]: Start accepts. Automaton has 36526 states and 47833 transitions. Word has length 231 [2019-09-07 22:56:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:56:18,185 INFO L475 AbstractCegarLoop]: Abstraction has 36526 states and 47833 transitions. [2019-09-07 22:56:18,186 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:56:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 36526 states and 47833 transitions. [2019-09-07 22:56:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2019-09-07 22:56:18,209 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:56:18,210 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:18,210 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:56:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:56:18,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1562458249, now seen corresponding path program 1 times [2019-09-07 22:56:18,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:56:18,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:56:18,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:56:18,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:56:18,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:56:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:56:19,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:56:19,177 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 22:56:19,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:56:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:19,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:56:19,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:56:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 22:56:20,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:56:20,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:56:20,038 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:56:20,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:56:20,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:56:20,039 INFO L87 Difference]: Start difference. First operand 36526 states and 47833 transitions. Second operand 9 states. [2019-09-07 22:56:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:56:43,577 INFO L93 Difference]: Finished difference Result 86278 states and 119175 transitions. [2019-09-07 22:56:43,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 22:56:43,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 774 [2019-09-07 22:56:43,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:56:43,830 INFO L225 Difference]: With dead ends: 86278 [2019-09-07 22:56:43,830 INFO L226 Difference]: Without dead ends: 49758 [2019-09-07 22:56:43,936 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-09-07 22:56:43,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49758 states. [2019-09-07 22:56:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49758 to 49049. [2019-09-07 22:56:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49049 states. [2019-09-07 22:56:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49049 states to 49049 states and 61673 transitions. [2019-09-07 22:56:45,347 INFO L78 Accepts]: Start accepts. Automaton has 49049 states and 61673 transitions. Word has length 774 [2019-09-07 22:56:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:56:45,350 INFO L475 AbstractCegarLoop]: Abstraction has 49049 states and 61673 transitions. [2019-09-07 22:56:45,350 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:56:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 49049 states and 61673 transitions. [2019-09-07 22:56:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2019-09-07 22:56:45,390 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:56:45,399 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 22:56:45,400 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:56:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:56:45,401 INFO L82 PathProgramCache]: Analyzing trace with hash -557803844, now seen corresponding path program 1 times [2019-09-07 22:56:45,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:56:45,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:56:45,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:56:45,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:56:45,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:56:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 22:56:46,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:56:46,629 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 22:56:46,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:56:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:46,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:56:46,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:56:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 22:56:47,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:56:47,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:56:47,462 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:56:47,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:56:47,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:56:47,463 INFO L87 Difference]: Start difference. First operand 49049 states and 61673 transitions. Second operand 9 states. [2019-09-07 22:57:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:57:18,707 INFO L93 Difference]: Finished difference Result 178850 states and 269573 transitions. [2019-09-07 22:57:18,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 22:57:18,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 822 [2019-09-07 22:57:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:57:19,350 INFO L225 Difference]: With dead ends: 178850 [2019-09-07 22:57:19,350 INFO L226 Difference]: Without dead ends: 129807 [2019-09-07 22:57:19,506 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 22:57:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129807 states. [2019-09-07 22:57:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129807 to 127155. [2019-09-07 22:57:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127155 states. [2019-09-07 22:57:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127155 states to 127155 states and 175251 transitions. [2019-09-07 22:57:25,392 INFO L78 Accepts]: Start accepts. Automaton has 127155 states and 175251 transitions. Word has length 822 [2019-09-07 22:57:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:57:25,393 INFO L475 AbstractCegarLoop]: Abstraction has 127155 states and 175251 transitions. [2019-09-07 22:57:25,393 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:57:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 127155 states and 175251 transitions. [2019-09-07 22:57:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2019-09-07 22:57:25,414 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:57:25,415 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:25,416 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:57:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:57:25,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1007855449, now seen corresponding path program 1 times [2019-09-07 22:57:25,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:57:25,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:57:25,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:57:25,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:57:25,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:57:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:57:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:57:29,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:57:29,109 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 22:57:29,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:57:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:57:29,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:57:29,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:57:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 22:57:29,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:57:29,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:57:29,666 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:57:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:57:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:57:29,666 INFO L87 Difference]: Start difference. First operand 127155 states and 175251 transitions. Second operand 9 states. [2019-09-07 22:58:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:58:01,238 INFO L93 Difference]: Finished difference Result 333664 states and 552092 transitions. [2019-09-07 22:58:01,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:58:01,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 824 [2019-09-07 22:58:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:58:02,209 INFO L225 Difference]: With dead ends: 333664 [2019-09-07 22:58:02,212 INFO L226 Difference]: Without dead ends: 204974 [2019-09-07 22:58:02,511 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 829 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:58:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204974 states. [2019-09-07 22:58:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204974 to 203183. [2019-09-07 22:58:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203183 states. [2019-09-07 22:58:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203183 states to 203183 states and 306602 transitions. [2019-09-07 22:58:14,734 INFO L78 Accepts]: Start accepts. Automaton has 203183 states and 306602 transitions. Word has length 824 [2019-09-07 22:58:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:58:14,735 INFO L475 AbstractCegarLoop]: Abstraction has 203183 states and 306602 transitions. [2019-09-07 22:58:14,735 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:58:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 203183 states and 306602 transitions. [2019-09-07 22:58:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2019-09-07 22:58:14,754 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:58:14,755 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:58:14,755 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:58:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:58:14,756 INFO L82 PathProgramCache]: Analyzing trace with hash -456737278, now seen corresponding path program 1 times [2019-09-07 22:58:14,756 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:58:14,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:58:14,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:58:14,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:58:14,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:58:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:58:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 509 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-09-07 22:58:15,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:58:15,792 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:58:15,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:58:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:58:16,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:58:16,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:58:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 509 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-09-07 22:58:17,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:58:17,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:58:17,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:58:17,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:58:17,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:58:17,178 INFO L87 Difference]: Start difference. First operand 203183 states and 306602 transitions. Second operand 9 states. [2019-09-07 22:59:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:59:04,590 INFO L93 Difference]: Finished difference Result 486981 states and 870193 transitions. [2019-09-07 22:59:04,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:59:04,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 942 [2019-09-07 22:59:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:59:06,701 INFO L225 Difference]: With dead ends: 486981 [2019-09-07 22:59:06,702 INFO L226 Difference]: Without dead ends: 282216 [2019-09-07 22:59:07,424 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 949 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:59:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282216 states. [2019-09-07 22:59:20,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282216 to 280561. [2019-09-07 22:59:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280561 states. [2019-09-07 22:59:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280561 states to 280561 states and 466185 transitions. [2019-09-07 22:59:23,174 INFO L78 Accepts]: Start accepts. Automaton has 280561 states and 466185 transitions. Word has length 942 [2019-09-07 22:59:23,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:59:23,175 INFO L475 AbstractCegarLoop]: Abstraction has 280561 states and 466185 transitions. [2019-09-07 22:59:23,175 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:59:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 280561 states and 466185 transitions. [2019-09-07 22:59:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2019-09-07 22:59:23,195 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:59:23,196 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:59:23,196 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:59:23,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:59:23,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1476840904, now seen corresponding path program 1 times [2019-09-07 22:59:23,197 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:59:23,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:59:23,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:59:23,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:59:23,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:59:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:59:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-09-07 22:59:31,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:59:31,912 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 22:59:31,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:59:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:59:32,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:59:32,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:59:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-09-07 22:59:32,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:59:32,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:59:32,959 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:59:32,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:59:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:59:32,960 INFO L87 Difference]: Start difference. First operand 280561 states and 466185 transitions. Second operand 9 states. [2019-09-07 23:00:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:00:54,009 INFO L93 Difference]: Finished difference Result 857788 states and 1916066 transitions. [2019-09-07 23:00:54,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 23:00:54,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1002 [2019-09-07 23:00:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:00:59,145 INFO L225 Difference]: With dead ends: 857788 [2019-09-07 23:00:59,145 INFO L226 Difference]: Without dead ends: 552790 [2019-09-07 23:01:00,713 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1059 GetRequests, 1025 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 23:01:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552790 states. [2019-09-07 23:01:40,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552790 to 551983. [2019-09-07 23:01:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551983 states. [2019-09-07 23:02:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551983 states to 551983 states and 1172178 transitions. [2019-09-07 23:02:00,341 INFO L78 Accepts]: Start accepts. Automaton has 551983 states and 1172178 transitions. Word has length 1002 [2019-09-07 23:02:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:02:00,343 INFO L475 AbstractCegarLoop]: Abstraction has 551983 states and 1172178 transitions. [2019-09-07 23:02:00,343 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:02:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 551983 states and 1172178 transitions. [2019-09-07 23:02:00,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2019-09-07 23:02:00,383 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:02:00,384 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:02:00,384 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:02:00,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:02:00,385 INFO L82 PathProgramCache]: Analyzing trace with hash -237744015, now seen corresponding path program 1 times [2019-09-07 23:02:00,385 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:02:00,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:02:00,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:02:00,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:02:00,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:02:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:02:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-09-07 23:02:11,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:02:11,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:02:11,761 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:02:11,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:02:11,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:02:11,762 INFO L87 Difference]: Start difference. First operand 551983 states and 1172178 transitions. Second operand 3 states. [2019-09-07 23:03:21,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:03:21,771 INFO L93 Difference]: Finished difference Result 1308800 states and 3097634 transitions. [2019-09-07 23:03:21,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:03:21,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1134 [2019-09-07 23:03:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:03:28,515 INFO L225 Difference]: With dead ends: 1308800 [2019-09-07 23:03:28,515 INFO L226 Difference]: Without dead ends: 759601 [2019-09-07 23:03:31,520 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:03:32,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759601 states.