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/Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 18:33:14,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 18:33:14,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 18:33:14,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 18:33:14,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 18:33:14,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 18:33:14,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 18:33:14,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 18:33:14,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 18:33:14,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 18:33:14,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 18:33:14,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 18:33:14,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 18:33:14,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 18:33:14,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 18:33:14,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 18:33:14,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 18:33:14,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 18:33:14,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 18:33:14,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 18:33:14,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 18:33:14,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 18:33:14,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 18:33:14,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 18:33:14,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 18:33:14,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 18:33:14,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 18:33:14,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 18:33:14,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 18:33:14,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 18:33:14,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 18:33:14,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 18:33:14,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 18:33:14,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 18:33:14,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 18:33:14,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 18:33:14,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 18:33:14,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 18:33:14,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 18:33:14,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 18:33:14,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 18:33:14,169 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 18:33:14,185 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 18:33:14,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 18:33:14,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 18:33:14,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 18:33:14,187 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 18:33:14,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 18:33:14,187 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 18:33:14,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 18:33:14,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 18:33:14,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 18:33:14,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 18:33:14,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 18:33:14,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 18:33:14,189 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 18:33:14,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 18:33:14,189 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 18:33:14,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 18:33:14,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 18:33:14,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 18:33:14,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 18:33:14,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 18:33:14,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 18:33:14,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 18:33:14,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 18:33:14,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 18:33:14,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 18:33:14,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 18:33:14,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 18:33:14,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 18:33:14,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 18:33:14,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 18:33:14,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 18:33:14,242 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 18:33:14,242 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 18:33:14,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2019-09-07 18:33:14,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9f5ce91/aac3e3c8f4364c5b9392c1a5f79007de/FLAG0ce68673d [2019-09-07 18:33:14,989 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 18:33:14,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2019-09-07 18:33:15,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9f5ce91/aac3e3c8f4364c5b9392c1a5f79007de/FLAG0ce68673d [2019-09-07 18:33:15,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9f5ce91/aac3e3c8f4364c5b9392c1a5f79007de [2019-09-07 18:33:15,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 18:33:15,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 18:33:15,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 18:33:15,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 18:33:15,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 18:33:15,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:33:15" (1/1) ... [2019-09-07 18:33:15,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc6461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:15, skipping insertion in model container [2019-09-07 18:33:15,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:33:15" (1/1) ... [2019-09-07 18:33:15,169 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 18:33:15,321 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 18:33:16,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:33:16,655 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 18:33:17,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:33:17,317 INFO L192 MainTranslator]: Completed translation [2019-09-07 18:33:17,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17 WrapperNode [2019-09-07 18:33:17,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 18:33:17,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 18:33:17,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 18:33:17,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 18:33:17,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (1/1) ... [2019-09-07 18:33:17,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (1/1) ... [2019-09-07 18:33:17,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (1/1) ... [2019-09-07 18:33:17,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (1/1) ... [2019-09-07 18:33:17,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (1/1) ... [2019-09-07 18:33:17,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (1/1) ... [2019-09-07 18:33:17,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (1/1) ... [2019-09-07 18:33:17,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 18:33:17,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 18:33:17,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 18:33:17,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 18:33:17,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (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 18:33:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 18:33:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 18:33:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 18:33:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 18:33:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 18:33:17,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 18:33:17,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 18:33:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 18:33:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 18:33:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 18:33:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 18:33:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 18:33:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 18:33:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 18:33:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 18:33:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 18:33:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 18:33:22,479 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 18:33:22,479 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 18:33:22,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:33:22 BoogieIcfgContainer [2019-09-07 18:33:22,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 18:33:22,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 18:33:22,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 18:33:22,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 18:33:22,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 06:33:15" (1/3) ... [2019-09-07 18:33:22,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5412f4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:33:22, skipping insertion in model container [2019-09-07 18:33:22,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:17" (2/3) ... [2019-09-07 18:33:22,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5412f4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:33:22, skipping insertion in model container [2019-09-07 18:33:22,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:33:22" (3/3) ... [2019-09-07 18:33:22,492 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label03.c [2019-09-07 18:33:22,502 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 18:33:22,511 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 18:33:22,527 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 18:33:22,568 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 18:33:22,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 18:33:22,569 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 18:33:22,569 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 18:33:22,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 18:33:22,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 18:33:22,569 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 18:33:22,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 18:33:22,569 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 18:33:22,607 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-07 18:33:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-07 18:33:22,614 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:22,615 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] [2019-09-07 18:33:22,617 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash 23636122, now seen corresponding path program 1 times [2019-09-07 18:33:22,624 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:22,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:22,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:22,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:22,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:22,847 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 18:33:22,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:33:22,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 18:33:22,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 18:33:22,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 18:33:22,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:33:22,871 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-07 18:33:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:28,248 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-09-07 18:33:28,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 18:33:28,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-09-07 18:33:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:28,280 INFO L225 Difference]: With dead ends: 2443 [2019-09-07 18:33:28,281 INFO L226 Difference]: Without dead ends: 1542 [2019-09-07 18:33:28,289 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:33:28,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-07 18:33:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-07 18:33:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-07 18:33:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2822 transitions. [2019-09-07 18:33:28,439 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2822 transitions. Word has length 25 [2019-09-07 18:33:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:28,440 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2822 transitions. [2019-09-07 18:33:28,440 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 18:33:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2822 transitions. [2019-09-07 18:33:28,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-07 18:33:28,448 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:28,448 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 18:33:28,449 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:28,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash 65471695, now seen corresponding path program 1 times [2019-09-07 18:33:28,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:28,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:28,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:28,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:28,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:33:28,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:33:28,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 18:33:28,746 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:33:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:33:28,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:33:28,747 INFO L87 Difference]: Start difference. First operand 1542 states and 2822 transitions. Second operand 5 states. [2019-09-07 18:33:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:35,108 INFO L93 Difference]: Finished difference Result 3912 states and 7104 transitions. [2019-09-07 18:33:35,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:33:35,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-09-07 18:33:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:35,126 INFO L225 Difference]: With dead ends: 3912 [2019-09-07 18:33:35,127 INFO L226 Difference]: Without dead ends: 2376 [2019-09-07 18:33:35,130 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 18:33:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-09-07 18:33:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2350. [2019-09-07 18:33:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2019-09-07 18:33:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3968 transitions. [2019-09-07 18:33:35,187 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3968 transitions. Word has length 98 [2019-09-07 18:33:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:35,188 INFO L475 AbstractCegarLoop]: Abstraction has 2350 states and 3968 transitions. [2019-09-07 18:33:35,188 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:33:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3968 transitions. [2019-09-07 18:33:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-07 18:33:35,190 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:35,190 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 18:33:35,191 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:35,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1515762381, now seen corresponding path program 1 times [2019-09-07 18:33:35,191 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:35,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:35,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:35,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:35,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:33:35,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:33:35,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 18:33:35,264 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 18:33:35,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 18:33:35,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:33:35,265 INFO L87 Difference]: Start difference. First operand 2350 states and 3968 transitions. Second operand 4 states. [2019-09-07 18:33:43,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:43,581 INFO L93 Difference]: Finished difference Result 9360 states and 16173 transitions. [2019-09-07 18:33:43,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 18:33:43,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2019-09-07 18:33:43,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:43,636 INFO L225 Difference]: With dead ends: 9360 [2019-09-07 18:33:43,640 INFO L226 Difference]: Without dead ends: 7016 [2019-09-07 18:33:43,648 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 18:33:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2019-09-07 18:33:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 7016. [2019-09-07 18:33:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7016 states. [2019-09-07 18:33:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 11462 transitions. [2019-09-07 18:33:43,831 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 11462 transitions. Word has length 100 [2019-09-07 18:33:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:43,832 INFO L475 AbstractCegarLoop]: Abstraction has 7016 states and 11462 transitions. [2019-09-07 18:33:43,832 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 18:33:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 11462 transitions. [2019-09-07 18:33:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-07 18:33:43,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:43,837 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 18:33:43,837 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1728564766, now seen corresponding path program 1 times [2019-09-07 18:33:43,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:43,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:43,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:43,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:43,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:33:43,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:33:43,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:33:43,986 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:33:43,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:33:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:33:43,986 INFO L87 Difference]: Start difference. First operand 7016 states and 11462 transitions. Second operand 6 states. [2019-09-07 18:33:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:50,881 INFO L93 Difference]: Finished difference Result 21342 states and 36385 transitions. [2019-09-07 18:33:50,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:33:50,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2019-09-07 18:33:50,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:50,973 INFO L225 Difference]: With dead ends: 21342 [2019-09-07 18:33:50,974 INFO L226 Difference]: Without dead ends: 14332 [2019-09-07 18:33:50,993 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 18:33:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14332 states. [2019-09-07 18:33:51,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 14236. [2019-09-07 18:33:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14236 states. [2019-09-07 18:33:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14236 states to 14236 states and 22812 transitions. [2019-09-07 18:33:51,425 INFO L78 Accepts]: Start accepts. Automaton has 14236 states and 22812 transitions. Word has length 127 [2019-09-07 18:33:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:51,426 INFO L475 AbstractCegarLoop]: Abstraction has 14236 states and 22812 transitions. [2019-09-07 18:33:51,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:33:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 14236 states and 22812 transitions. [2019-09-07 18:33:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-09-07 18:33:51,438 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:51,438 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:51,439 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash -611273206, now seen corresponding path program 1 times [2019-09-07 18:33:51,439 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:51,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:51,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:51,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:51,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-07 18:33:51,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:33:51,777 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 18:33:51,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:51,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 18:33:51,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:33:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 72 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 18:33:52,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:33:52,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 18:33:52,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:33:52,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:33:52,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:33:52,081 INFO L87 Difference]: Start difference. First operand 14236 states and 22812 transitions. Second operand 9 states. [2019-09-07 18:34:08,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:34:08,509 INFO L93 Difference]: Finished difference Result 65691 states and 117424 transitions. [2019-09-07 18:34:08,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-07 18:34:08,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2019-09-07 18:34:08,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:34:08,764 INFO L225 Difference]: With dead ends: 65691 [2019-09-07 18:34:08,765 INFO L226 Difference]: Without dead ends: 51461 [2019-09-07 18:34:08,827 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2019-09-07 18:34:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51461 states. [2019-09-07 18:34:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51461 to 45636. [2019-09-07 18:34:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45636 states. [2019-09-07 18:34:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45636 states to 45636 states and 68686 transitions. [2019-09-07 18:34:11,636 INFO L78 Accepts]: Start accepts. Automaton has 45636 states and 68686 transitions. Word has length 247 [2019-09-07 18:34:11,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:34:11,637 INFO L475 AbstractCegarLoop]: Abstraction has 45636 states and 68686 transitions. [2019-09-07 18:34:11,637 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:34:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 45636 states and 68686 transitions. [2019-09-07 18:34:11,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-09-07 18:34:11,646 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:34:11,646 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:11,647 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:34:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:34:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1275510427, now seen corresponding path program 1 times [2019-09-07 18:34:11,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:34:11,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:34:11,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:11,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:11,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:34:11,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:34:11,985 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 18:34:12,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:12,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:34:12,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:34:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:34:12,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:34:12,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:34:12,506 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:34:12,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:34:12,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:34:12,507 INFO L87 Difference]: Start difference. First operand 45636 states and 68686 transitions. Second operand 9 states. [2019-09-07 18:34:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:34:38,454 INFO L93 Difference]: Finished difference Result 114265 states and 212016 transitions. [2019-09-07 18:34:38,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-07 18:34:38,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 286 [2019-09-07 18:34:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:34:38,820 INFO L225 Difference]: With dead ends: 114265 [2019-09-07 18:34:38,820 INFO L226 Difference]: Without dead ends: 68635 [2019-09-07 18:34:38,959 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=566, Invalid=2404, Unknown=0, NotChecked=0, Total=2970 [2019-09-07 18:34:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68635 states. [2019-09-07 18:34:41,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68635 to 63646. [2019-09-07 18:34:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63646 states. [2019-09-07 18:34:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63646 states to 63646 states and 87361 transitions. [2019-09-07 18:34:41,886 INFO L78 Accepts]: Start accepts. Automaton has 63646 states and 87361 transitions. Word has length 286 [2019-09-07 18:34:41,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:34:41,888 INFO L475 AbstractCegarLoop]: Abstraction has 63646 states and 87361 transitions. [2019-09-07 18:34:41,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:34:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 63646 states and 87361 transitions. [2019-09-07 18:34:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2019-09-07 18:34:41,911 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:34:41,911 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:34:41,911 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:34:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:34:41,912 INFO L82 PathProgramCache]: Analyzing trace with hash 33282642, now seen corresponding path program 1 times [2019-09-07 18:34:41,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:34:41,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:34:41,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:41,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:41,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 131 proven. 113 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 18:34:42,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:34:42,156 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) [2019-09-07 18:34:42,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:34:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:42,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:34:42,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:34:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-07 18:34:42,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:34:42,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:34:42,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:34:42,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:34:42,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:34:42,361 INFO L87 Difference]: Start difference. First operand 63646 states and 87361 transitions. Second operand 9 states. [2019-09-07 18:34:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:34:57,351 INFO L93 Difference]: Finished difference Result 160989 states and 274723 transitions. [2019-09-07 18:34:57,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 18:34:57,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2019-09-07 18:34:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:34:57,950 INFO L225 Difference]: With dead ends: 160989 [2019-09-07 18:34:57,950 INFO L226 Difference]: Without dead ends: 88742 [2019-09-07 18:34:58,220 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-09-07 18:34:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88742 states. [2019-09-07 18:35:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88742 to 86449. [2019-09-07 18:35:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86449 states. [2019-09-07 18:35:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86449 states to 86449 states and 129150 transitions. [2019-09-07 18:35:03,417 INFO L78 Accepts]: Start accepts. Automaton has 86449 states and 129150 transitions. Word has length 337 [2019-09-07 18:35:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:35:03,417 INFO L475 AbstractCegarLoop]: Abstraction has 86449 states and 129150 transitions. [2019-09-07 18:35:03,418 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:35:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 86449 states and 129150 transitions. [2019-09-07 18:35:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2019-09-07 18:35:03,445 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:35:03,446 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:35:03,446 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:35:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:35:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash 565016946, now seen corresponding path program 1 times [2019-09-07 18:35:03,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:35:03,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:35:03,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:03,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:03,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 18:35:03,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:35:03,763 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 18:35:03,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:03,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:35:03,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:35:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 18:35:04,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:35:04,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:35:04,036 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:35:04,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:35:04,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:35:04,037 INFO L87 Difference]: Start difference. First operand 86449 states and 129150 transitions. Second operand 9 states. [2019-09-07 18:35:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:35:21,140 INFO L93 Difference]: Finished difference Result 246723 states and 442157 transitions. [2019-09-07 18:35:21,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 18:35:21,141 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 393 [2019-09-07 18:35:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:35:25,480 INFO L225 Difference]: With dead ends: 246723 [2019-09-07 18:35:25,480 INFO L226 Difference]: Without dead ends: 160312 [2019-09-07 18:35:25,661 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:35:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160312 states. [2019-09-07 18:35:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160312 to 158558. [2019-09-07 18:35:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158558 states. [2019-09-07 18:35:29,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158558 states to 158558 states and 263392 transitions. [2019-09-07 18:35:29,832 INFO L78 Accepts]: Start accepts. Automaton has 158558 states and 263392 transitions. Word has length 393 [2019-09-07 18:35:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:35:29,833 INFO L475 AbstractCegarLoop]: Abstraction has 158558 states and 263392 transitions. [2019-09-07 18:35:29,833 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:35:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 158558 states and 263392 transitions. [2019-09-07 18:35:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2019-09-07 18:35:29,889 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:35:29,890 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:29,890 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:35:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:35:29,891 INFO L82 PathProgramCache]: Analyzing trace with hash 878120419, now seen corresponding path program 1 times [2019-09-07 18:35:29,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:35:29,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:35:29,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:29,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:29,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-09-07 18:35:30,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:35:30,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 18:35:30,167 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 18:35:30,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 18:35:30,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:35:30,168 INFO L87 Difference]: Start difference. First operand 158558 states and 263392 transitions. Second operand 4 states. [2019-09-07 18:35:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:35:46,993 INFO L93 Difference]: Finished difference Result 433588 states and 767334 transitions. [2019-09-07 18:35:46,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 18:35:46,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 446 [2019-09-07 18:35:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:35:48,444 INFO L225 Difference]: With dead ends: 433588 [2019-09-07 18:35:48,444 INFO L226 Difference]: Without dead ends: 274258 [2019-09-07 18:35:49,573 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 18:35:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274258 states. [2019-09-07 18:35:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274258 to 273454. [2019-09-07 18:35:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273454 states. [2019-09-07 18:36:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273454 states to 273454 states and 447975 transitions. [2019-09-07 18:36:00,609 INFO L78 Accepts]: Start accepts. Automaton has 273454 states and 447975 transitions. Word has length 446 [2019-09-07 18:36:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:36:00,610 INFO L475 AbstractCegarLoop]: Abstraction has 273454 states and 447975 transitions. [2019-09-07 18:36:00,610 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 18:36:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 273454 states and 447975 transitions. [2019-09-07 18:36:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2019-09-07 18:36:00,824 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:36:00,825 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:00,825 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:36:00,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:36:00,827 INFO L82 PathProgramCache]: Analyzing trace with hash 700038581, now seen corresponding path program 1 times [2019-09-07 18:36:00,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:36:00,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:36:00,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:36:00,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:36:00,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:36:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:36:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 36 proven. 194 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 18:36:01,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:36:01,467 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) [2019-09-07 18:36:01,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:36:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:36:02,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 18:36:02,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:36:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-07 18:36:03,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:36:03,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 18:36:03,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:36:03,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:36:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:36:03,017 INFO L87 Difference]: Start difference. First operand 273454 states and 447975 transitions. Second operand 9 states. [2019-09-07 18:36:21,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:36:21,850 INFO L93 Difference]: Finished difference Result 594469 states and 923324 transitions. [2019-09-07 18:36:21,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 18:36:21,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 606 [2019-09-07 18:36:21,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:36:23,896 INFO L225 Difference]: With dead ends: 594469 [2019-09-07 18:36:23,896 INFO L226 Difference]: Without dead ends: 316305 [2019-09-07 18:36:24,433 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 614 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-09-07 18:36:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316305 states. [2019-09-07 18:36:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316305 to 311607. [2019-09-07 18:36:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311607 states. [2019-09-07 18:36:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311607 states to 311607 states and 390934 transitions. [2019-09-07 18:36:36,046 INFO L78 Accepts]: Start accepts. Automaton has 311607 states and 390934 transitions. Word has length 606 [2019-09-07 18:36:36,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:36:36,047 INFO L475 AbstractCegarLoop]: Abstraction has 311607 states and 390934 transitions. [2019-09-07 18:36:36,047 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:36:36,047 INFO L276 IsEmpty]: Start isEmpty. Operand 311607 states and 390934 transitions. [2019-09-07 18:36:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2019-09-07 18:36:36,174 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:36:36,175 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:36:36,175 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:36:36,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:36:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1497771131, now seen corresponding path program 1 times [2019-09-07 18:36:36,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:36:36,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:36:36,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:36:36,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:36:36,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:36:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:36:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-09-07 18:36:36,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:36:36,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 18:36:36,871 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 18:36:36,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 18:36:36,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:36:36,872 INFO L87 Difference]: Start difference. First operand 311607 states and 390934 transitions. Second operand 4 states. [2019-09-07 18:36:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:36:53,290 INFO L93 Difference]: Finished difference Result 729003 states and 916001 transitions. [2019-09-07 18:36:53,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 18:36:53,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 726 [2019-09-07 18:36:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:36:54,572 INFO L225 Difference]: With dead ends: 729003 [2019-09-07 18:36:54,572 INFO L226 Difference]: Without dead ends: 418169 [2019-09-07 18:36:55,755 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 18:36:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418169 states. [2019-09-07 18:37:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418169 to 408830. [2019-09-07 18:37:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408830 states. [2019-09-07 18:37:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408830 states to 408830 states and 498819 transitions. [2019-09-07 18:37:10,696 INFO L78 Accepts]: Start accepts. Automaton has 408830 states and 498819 transitions. Word has length 726 [2019-09-07 18:37:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:37:10,697 INFO L475 AbstractCegarLoop]: Abstraction has 408830 states and 498819 transitions. [2019-09-07 18:37:10,697 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 18:37:10,698 INFO L276 IsEmpty]: Start isEmpty. Operand 408830 states and 498819 transitions. [2019-09-07 18:37:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2019-09-07 18:37:12,241 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:37:12,242 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:37:12,242 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:37:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:37:12,242 INFO L82 PathProgramCache]: Analyzing trace with hash 266747798, now seen corresponding path program 1 times [2019-09-07 18:37:12,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:37:12,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:37:12,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:37:12,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:37:12,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:37:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:37:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 199 proven. 240 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-09-07 18:37:17,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:37:17,744 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:37:17,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:37:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:37:18,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:37:18,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:37:18,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:37:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 685 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2019-09-07 18:37:18,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:37:18,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:37:18,446 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:37:18,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:37:18,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:37:18,446 INFO L87 Difference]: Start difference. First operand 408830 states and 498819 transitions. Second operand 9 states. [2019-09-07 18:37:50,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:37:50,259 INFO L93 Difference]: Finished difference Result 822045 states and 1042037 transitions. [2019-09-07 18:37:50,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-09-07 18:37:50,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1009 [2019-09-07 18:37:50,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:37:51,452 INFO L225 Difference]: With dead ends: 822045 [2019-09-07 18:37:51,452 INFO L226 Difference]: Without dead ends: 412328 [2019-09-07 18:37:51,908 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=585, Invalid=2607, Unknown=0, NotChecked=0, Total=3192 [2019-09-07 18:37:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412328 states. [2019-09-07 18:38:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412328 to 404731. [2019-09-07 18:38:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404731 states. [2019-09-07 18:38:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404731 states to 404731 states and 461345 transitions. [2019-09-07 18:38:12,694 INFO L78 Accepts]: Start accepts. Automaton has 404731 states and 461345 transitions. Word has length 1009 [2019-09-07 18:38:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:38:12,695 INFO L475 AbstractCegarLoop]: Abstraction has 404731 states and 461345 transitions. [2019-09-07 18:38:12,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:38:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 404731 states and 461345 transitions. [2019-09-07 18:38:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2019-09-07 18:38:12,790 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:38:12,791 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:12,791 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:38:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:38:12,792 INFO L82 PathProgramCache]: Analyzing trace with hash -102201906, now seen corresponding path program 1 times [2019-09-07 18:38:12,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:38:12,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:38:12,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:38:12,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:38:12,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:38:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:38:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 353 proven. 410 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-09-07 18:38:15,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:38:15,506 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:38:15,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:38:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:38:15,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 18:38:15,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:38:15,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:15,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:15,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:15,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:15,852 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:15,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:15,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:15,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:15,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:15,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:15,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:15,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:15,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:15,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:15,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:15,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:15,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:38:16,381 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 414 DAG size of output: 23 [2019-09-07 18:38:16,501 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:16,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:38:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 577 proven. 215 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 18:38:18,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:38:18,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2019-09-07 18:38:18,272 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 18:38:18,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 18:38:18,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=281, Unknown=1, NotChecked=0, Total=342 [2019-09-07 18:38:18,273 INFO L87 Difference]: Start difference. First operand 404731 states and 461345 transitions. Second operand 19 states. [2019-09-07 18:38:22,524 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2019-09-07 18:38:25,898 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 42 [2019-09-07 18:38:26,107 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2019-09-07 18:38:33,838 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-07 18:38:38,747 WARN L188 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2019-09-07 18:38:39,556 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2019-09-07 18:38:39,838 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-09-07 18:38:40,297 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-07 18:38:41,211 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-09-07 18:38:41,492 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2019-09-07 18:38:44,933 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2019-09-07 18:38:48,585 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2019-09-07 18:38:49,609 WARN L188 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2019-09-07 18:38:51,798 WARN L188 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2019-09-07 18:38:53,264 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-09-07 18:39:01,675 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-07 18:39:04,490 WARN L188 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2019-09-07 18:39:06,267 WARN L188 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2019-09-07 18:39:12,112 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2019-09-07 18:39:27,559 WARN L188 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2019-09-07 18:39:27,830 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-09-07 18:39:29,014 WARN L188 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2019-09-07 18:39:29,709 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-07 18:39:30,015 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-07 18:39:31,466 WARN L188 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2019-09-07 18:39:38,337 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2019-09-07 18:39:44,713 WARN L188 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-07 18:39:45,667 WARN L188 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-07 18:39:51,022 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-07 18:39:52,208 WARN L188 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2019-09-07 18:39:55,194 WARN L188 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-07 18:40:09,438 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-07 18:40:19,459 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-07 18:40:29,327 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-07 18:40:32,663 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-07 18:40:47,132 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-07 18:40:55,708 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-07 18:41:13,093 WARN L188 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2019-09-07 18:41:40,720 WARN L188 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2019-09-07 18:41:40,962 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-09-07 18:42:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:42:20,690 INFO L93 Difference]: Finished difference Result 934154 states and 1096232 transitions. [2019-09-07 18:42:20,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2019-09-07 18:42:20,691 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1013 [2019-09-07 18:42:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:42:22,161 INFO L225 Difference]: With dead ends: 934154 [2019-09-07 18:42:22,161 INFO L226 Difference]: Without dead ends: 529409 [2019-09-07 18:42:22,523 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1090 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7472 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=3146, Invalid=15211, Unknown=3, NotChecked=0, Total=18360 [2019-09-07 18:42:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529409 states. [2019-09-07 18:42:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529409 to 506125. [2019-09-07 18:42:42,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506125 states. [2019-09-07 18:42:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506125 states to 506125 states and 572261 transitions. [2019-09-07 18:42:43,756 INFO L78 Accepts]: Start accepts. Automaton has 506125 states and 572261 transitions. Word has length 1013 [2019-09-07 18:42:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:42:43,757 INFO L475 AbstractCegarLoop]: Abstraction has 506125 states and 572261 transitions. [2019-09-07 18:42:43,757 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-07 18:42:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 506125 states and 572261 transitions. [2019-09-07 18:42:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2019-09-07 18:42:44,181 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:42:44,182 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:42:44,182 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:42:44,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:42:44,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1641909323, now seen corresponding path program 1 times [2019-09-07 18:42:44,183 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:42:44,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:42:44,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:42:44,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:42:44,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:42:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:42:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 588 proven. 1089 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2019-09-07 18:42:51,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:42:51,704 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:42:51,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:42:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:42:52,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:42:52,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:42:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 1866 proven. 2 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2019-09-07 18:42:52,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:42:52,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 18:42:52,950 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 18:42:52,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 18:42:52,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 18:42:52,951 INFO L87 Difference]: Start difference. First operand 506125 states and 572261 transitions. Second operand 8 states. [2019-09-07 18:43:07,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:43:07,298 INFO L93 Difference]: Finished difference Result 1005021 states and 1135709 transitions. [2019-09-07 18:43:07,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 18:43:07,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1495 [2019-09-07 18:43:07,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:43:09,542 INFO L225 Difference]: With dead ends: 1005021 [2019-09-07 18:43:09,542 INFO L226 Difference]: Without dead ends: 499669 [2019-09-07 18:43:09,984 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1515 GetRequests, 1504 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-09-07 18:43:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499669 states. [2019-09-07 18:43:24,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499669 to 498061. [2019-09-07 18:43:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498061 states. [2019-09-07 18:43:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498061 states to 498061 states and 547636 transitions. [2019-09-07 18:43:26,505 INFO L78 Accepts]: Start accepts. Automaton has 498061 states and 547636 transitions. Word has length 1495 [2019-09-07 18:43:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:43:26,506 INFO L475 AbstractCegarLoop]: Abstraction has 498061 states and 547636 transitions. [2019-09-07 18:43:26,506 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 18:43:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 498061 states and 547636 transitions. [2019-09-07 18:43:26,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1915 [2019-09-07 18:43:26,924 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:43:26,925 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:43:26,925 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:43:26,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:43:26,926 INFO L82 PathProgramCache]: Analyzing trace with hash 766727988, now seen corresponding path program 1 times [2019-09-07 18:43:26,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:43:26,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:43:26,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:43:26,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:43:26,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:43:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:43:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 1771 proven. 6 refuted. 0 times theorem prover too weak. 1505 trivial. 0 not checked. [2019-09-07 18:43:35,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:43:35,588 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:43:35,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:43:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:43:36,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 18:43:36,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:43:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 1347 proven. 2 refuted. 0 times theorem prover too weak. 1933 trivial. 0 not checked. [2019-09-07 18:43:37,623 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:43:37,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 18:43:37,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 18:43:37,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 18:43:37,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 18:43:37,626 INFO L87 Difference]: Start difference. First operand 498061 states and 547636 transitions. Second operand 7 states. [2019-09-07 18:43:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:43:55,891 INFO L93 Difference]: Finished difference Result 1050167 states and 1196783 transitions. [2019-09-07 18:43:55,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 18:43:55,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1914 [2019-09-07 18:43:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:43:57,471 INFO L225 Difference]: With dead ends: 1050167 [2019-09-07 18:43:57,471 INFO L226 Difference]: Without dead ends: 552879 [2019-09-07 18:43:59,012 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1939 GetRequests, 1927 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-09-07 18:43:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552879 states. [2019-09-07 18:44:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552879 to 544379. [2019-09-07 18:44:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544379 states. [2019-09-07 18:44:26,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544379 states to 544379 states and 600330 transitions. [2019-09-07 18:44:26,369 INFO L78 Accepts]: Start accepts. Automaton has 544379 states and 600330 transitions. Word has length 1914 [2019-09-07 18:44:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:44:26,371 INFO L475 AbstractCegarLoop]: Abstraction has 544379 states and 600330 transitions. [2019-09-07 18:44:26,371 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 18:44:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 544379 states and 600330 transitions. [2019-09-07 18:44:27,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2195 [2019-09-07 18:44:27,051 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:44:27,052 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:44:27,053 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:44:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:44:27,054 INFO L82 PathProgramCache]: Analyzing trace with hash -774309322, now seen corresponding path program 1 times [2019-09-07 18:44:27,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:44:27,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:44:27,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:44:27,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:44:27,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:44:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:44:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3972 backedges. 1040 proven. 1748 refuted. 0 times theorem prover too weak. 1184 trivial. 0 not checked. [2019-09-07 18:44:33,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:44:33,736 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:44:33,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:44:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:44:34,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 18:44:34,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:44:34,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:44:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3972 backedges. 850 proven. 0 refuted. 0 times theorem prover too weak. 3122 trivial. 0 not checked. [2019-09-07 18:44:36,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:44:36,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [19] total 22 [2019-09-07 18:44:36,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 18:44:36,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 18:44:36,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-09-07 18:44:36,475 INFO L87 Difference]: Start difference. First operand 544379 states and 600330 transitions. Second operand 22 states. [2019-09-07 18:44:39,497 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-07 18:44:39,750 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-07 18:44:41,746 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 18:44:43,204 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51