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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:12:05,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:12:05,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:12:05,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 19:12:05,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:12:05,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:12:05,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:12:05,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:12:05,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:12:05,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:12:05,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:12:05,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:12:05,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:12:05,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:12:05,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:12:05,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:12:05,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:12:05,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:12:05,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:12:05,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:12:05,213 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 19:12:05,227 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:12:05,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:12:05,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:12:05,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:12:05,229 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:12:05,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:12:05,229 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:12:05,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:12:05,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:12:05,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:12:05,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:12:05,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:12:05,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:12:05,230 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:12:05,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:12:05,231 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:12:05,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:12:05,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:12:05,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:12:05,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:12:05,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:12:05,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:12:05,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:12:05,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:12:05,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:12:05,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:12:05,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:12:05,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:12:05,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:12:05,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:12:05,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:12:05,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:12:05,284 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:12:05,285 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:12:05,286 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label56.c [2019-09-07 19:12:05,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d642652a/ef022ec6ae3f48e7b62028b008efff78/FLAG76a9cddaa [2019-09-07 19:12:06,235 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:12:06,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label56.c [2019-09-07 19:12:06,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d642652a/ef022ec6ae3f48e7b62028b008efff78/FLAG76a9cddaa [2019-09-07 19:12:06,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d642652a/ef022ec6ae3f48e7b62028b008efff78 [2019-09-07 19:12:06,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:12:06,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:12:06,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:12:06,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:12:06,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:12:06,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:12:06" (1/1) ... [2019-09-07 19:12:06,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af60bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:06, skipping insertion in model container [2019-09-07 19:12:06,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:12:06" (1/1) ... [2019-09-07 19:12:06,800 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:12:06,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:12:08,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:12:08,392 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:12:09,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:12:09,112 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:12:09,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09 WrapperNode [2019-09-07 19:12:09,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:12:09,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:12:09,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:12:09,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:12:09,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (1/1) ... [2019-09-07 19:12:09,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (1/1) ... [2019-09-07 19:12:09,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (1/1) ... [2019-09-07 19:12:09,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (1/1) ... [2019-09-07 19:12:09,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (1/1) ... [2019-09-07 19:12:09,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (1/1) ... [2019-09-07 19:12:09,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (1/1) ... [2019-09-07 19:12:09,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:12:09,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:12:09,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:12:09,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:12:09,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (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 19:12:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:12:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:12:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:12:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:12:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:12:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:12:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:12:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:12:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:12:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:12:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:12:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:12:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:12:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:12:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:12:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:12:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:12:14,631 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:12:14,631 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:12:14,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:12:14 BoogieIcfgContainer [2019-09-07 19:12:14,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:12:14,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:12:14,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:12:14,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:12:14,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:12:06" (1/3) ... [2019-09-07 19:12:14,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfa3867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:12:14, skipping insertion in model container [2019-09-07 19:12:14,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:12:09" (2/3) ... [2019-09-07 19:12:14,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfa3867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:12:14, skipping insertion in model container [2019-09-07 19:12:14,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:12:14" (3/3) ... [2019-09-07 19:12:14,652 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label56.c [2019-09-07 19:12:14,664 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:12:14,674 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:12:14,691 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:12:14,742 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:12:14,743 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:12:14,743 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:12:14,743 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:12:14,743 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:12:14,743 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:12:14,743 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:12:14,744 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:12:14,744 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:12:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-07 19:12:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-07 19:12:14,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:14,795 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:12:14,797 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:14,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash 655830005, now seen corresponding path program 1 times [2019-09-07 19:12:14,805 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:14,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:14,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:14,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:14,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:15,241 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 19:12:15,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:12:15,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:12:15,249 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:12:15,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:12:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:12:15,267 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-07 19:12:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:12:20,981 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-09-07 19:12:20,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:12:20,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2019-09-07 19:12:20,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:12:21,023 INFO L225 Difference]: With dead ends: 2443 [2019-09-07 19:12:21,024 INFO L226 Difference]: Without dead ends: 1542 [2019-09-07 19:12:21,035 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 19:12:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-07 19:12:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-07 19:12:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-07 19:12:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2750 transitions. [2019-09-07 19:12:21,176 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2750 transitions. Word has length 62 [2019-09-07 19:12:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:12:21,177 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2750 transitions. [2019-09-07 19:12:21,177 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:12:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2750 transitions. [2019-09-07 19:12:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-07 19:12:21,186 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:21,188 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 19:12:21,188 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:21,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:21,190 INFO L82 PathProgramCache]: Analyzing trace with hash -839568063, now seen corresponding path program 1 times [2019-09-07 19:12:21,190 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:21,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:21,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:21,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:21,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:12:21,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:12:21,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:12:21,428 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:12:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:12:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:12:21,429 INFO L87 Difference]: Start difference. First operand 1542 states and 2750 transitions. Second operand 5 states. [2019-09-07 19:12:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:12:27,990 INFO L93 Difference]: Finished difference Result 4690 states and 8403 transitions. [2019-09-07 19:12:27,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:12:27,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2019-09-07 19:12:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:12:28,017 INFO L225 Difference]: With dead ends: 4690 [2019-09-07 19:12:28,017 INFO L226 Difference]: Without dead ends: 3154 [2019-09-07 19:12:28,023 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 19:12:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2019-09-07 19:12:28,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3122. [2019-09-07 19:12:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2019-09-07 19:12:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5336 transitions. [2019-09-07 19:12:28,129 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5336 transitions. Word has length 135 [2019-09-07 19:12:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:12:28,130 INFO L475 AbstractCegarLoop]: Abstraction has 3122 states and 5336 transitions. [2019-09-07 19:12:28,130 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:12:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5336 transitions. [2019-09-07 19:12:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-07 19:12:28,134 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:28,134 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:28,134 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:28,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1987745692, now seen corresponding path program 1 times [2019-09-07 19:12:28,135 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:28,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:28,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:28,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:28,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:12:28,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:12:28,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:12:28,318 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:12:28,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:12:28,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:12:28,318 INFO L87 Difference]: Start difference. First operand 3122 states and 5336 transitions. Second operand 6 states. [2019-09-07 19:12:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:12:35,510 INFO L93 Difference]: Finished difference Result 9491 states and 16483 transitions. [2019-09-07 19:12:35,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:12:35,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-09-07 19:12:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:12:35,552 INFO L225 Difference]: With dead ends: 9491 [2019-09-07 19:12:35,555 INFO L226 Difference]: Without dead ends: 6375 [2019-09-07 19:12:35,565 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:12:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2019-09-07 19:12:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 6333. [2019-09-07 19:12:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6333 states. [2019-09-07 19:12:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 10771 transitions. [2019-09-07 19:12:35,816 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 10771 transitions. Word has length 140 [2019-09-07 19:12:35,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:12:35,818 INFO L475 AbstractCegarLoop]: Abstraction has 6333 states and 10771 transitions. [2019-09-07 19:12:35,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:12:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 10771 transitions. [2019-09-07 19:12:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-09-07 19:12:35,826 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:35,827 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:35,827 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:35,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:35,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1280255476, now seen corresponding path program 1 times [2019-09-07 19:12:35,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:35,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:35,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:35,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:35,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:12:36,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:12:36,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:12:36,019 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:12:36,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:12:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:12:36,020 INFO L87 Difference]: Start difference. First operand 6333 states and 10771 transitions. Second operand 6 states. [2019-09-07 19:12:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:12:41,800 INFO L93 Difference]: Finished difference Result 15980 states and 27530 transitions. [2019-09-07 19:12:41,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:12:41,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-09-07 19:12:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:12:41,848 INFO L225 Difference]: With dead ends: 15980 [2019-09-07 19:12:41,848 INFO L226 Difference]: Without dead ends: 9653 [2019-09-07 19:12:41,867 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:12:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9653 states. [2019-09-07 19:12:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9653 to 9576. [2019-09-07 19:12:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9576 states. [2019-09-07 19:12:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 15608 transitions. [2019-09-07 19:12:42,121 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 15608 transitions. Word has length 148 [2019-09-07 19:12:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:12:42,122 INFO L475 AbstractCegarLoop]: Abstraction has 9576 states and 15608 transitions. [2019-09-07 19:12:42,122 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:12:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 15608 transitions. [2019-09-07 19:12:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-09-07 19:12:42,125 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:42,126 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:42,126 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:42,126 INFO L82 PathProgramCache]: Analyzing trace with hash 999102757, now seen corresponding path program 1 times [2019-09-07 19:12:42,127 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:42,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:42,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:42,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:42,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:12:42,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:12:42,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:12:42,276 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:12:42,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:12:42,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:12:42,277 INFO L87 Difference]: Start difference. First operand 9576 states and 15608 transitions. Second operand 6 states. [2019-09-07 19:12:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:12:54,866 INFO L93 Difference]: Finished difference Result 37842 states and 68764 transitions. [2019-09-07 19:12:54,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 19:12:54,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2019-09-07 19:12:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:12:55,128 INFO L225 Difference]: With dead ends: 37842 [2019-09-07 19:12:55,130 INFO L226 Difference]: Without dead ends: 28272 [2019-09-07 19:12:55,160 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:12:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28272 states. [2019-09-07 19:12:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28272 to 28091. [2019-09-07 19:12:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28091 states. [2019-09-07 19:12:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28091 states to 28091 states and 45131 transitions. [2019-09-07 19:12:55,992 INFO L78 Accepts]: Start accepts. Automaton has 28091 states and 45131 transitions. Word has length 165 [2019-09-07 19:12:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:12:55,993 INFO L475 AbstractCegarLoop]: Abstraction has 28091 states and 45131 transitions. [2019-09-07 19:12:55,993 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:12:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 28091 states and 45131 transitions. [2019-09-07 19:12:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-09-07 19:12:55,997 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:55,997 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:55,997 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:55,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:55,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1127876192, now seen corresponding path program 1 times [2019-09-07 19:12:55,998 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:55,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:55,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:55,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:56,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:12:56,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:12:56,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:12:56,253 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:12:56,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:12:56,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:12:56,254 INFO L87 Difference]: Start difference. First operand 28091 states and 45131 transitions. Second operand 6 states. [2019-09-07 19:13:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:13:03,102 INFO L93 Difference]: Finished difference Result 69315 states and 116446 transitions. [2019-09-07 19:13:03,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:13:03,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2019-09-07 19:13:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:13:03,284 INFO L225 Difference]: With dead ends: 69315 [2019-09-07 19:13:03,285 INFO L226 Difference]: Without dead ends: 41230 [2019-09-07 19:13:03,365 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 19:13:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41230 states. [2019-09-07 19:13:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41230 to 41135. [2019-09-07 19:13:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41135 states. [2019-09-07 19:13:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41135 states to 41135 states and 62353 transitions. [2019-09-07 19:13:05,471 INFO L78 Accepts]: Start accepts. Automaton has 41135 states and 62353 transitions. Word has length 186 [2019-09-07 19:13:05,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:13:05,472 INFO L475 AbstractCegarLoop]: Abstraction has 41135 states and 62353 transitions. [2019-09-07 19:13:05,472 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:13:05,472 INFO L276 IsEmpty]: Start isEmpty. Operand 41135 states and 62353 transitions. [2019-09-07 19:13:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-09-07 19:13:05,478 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:13:05,478 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 19:13:05,479 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:13:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:13:05,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1764824700, now seen corresponding path program 1 times [2019-09-07 19:13:05,480 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:13:05,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:13:05,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:13:05,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:13:05,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:13:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:13:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 110 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:13:05,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:13:05,612 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 19:13:05,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:13:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:13:05,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:13:05,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:13:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-07 19:13:05,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:13:05,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-09-07 19:13:05,861 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:13:05,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:13:05,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:13:05,861 INFO L87 Difference]: Start difference. First operand 41135 states and 62353 transitions. Second operand 7 states. [2019-09-07 19:13:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:13:16,467 INFO L93 Difference]: Finished difference Result 115306 states and 187006 transitions. [2019-09-07 19:13:16,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:13:16,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2019-09-07 19:13:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:13:16,900 INFO L225 Difference]: With dead ends: 115306 [2019-09-07 19:13:16,900 INFO L226 Difference]: Without dead ends: 74177 [2019-09-07 19:13:17,004 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:13:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74177 states. [2019-09-07 19:13:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74177 to 69195. [2019-09-07 19:13:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69195 states. [2019-09-07 19:13:18,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69195 states to 69195 states and 104334 transitions. [2019-09-07 19:13:18,954 INFO L78 Accepts]: Start accepts. Automaton has 69195 states and 104334 transitions. Word has length 219 [2019-09-07 19:13:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:13:18,955 INFO L475 AbstractCegarLoop]: Abstraction has 69195 states and 104334 transitions. [2019-09-07 19:13:18,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:13:18,955 INFO L276 IsEmpty]: Start isEmpty. Operand 69195 states and 104334 transitions. [2019-09-07 19:13:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2019-09-07 19:13:18,961 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:13:18,961 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 19:13:18,962 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:13:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:13:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1193629496, now seen corresponding path program 1 times [2019-09-07 19:13:18,963 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:13:18,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:13:18,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:13:18,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:13:18,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:13:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:13:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:13:20,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:13:20,840 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) [2019-09-07 19:13:20,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:13:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:13:20,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:13:20,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:13:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:13:21,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:13:21,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:13:21,118 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:13:21,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:13:21,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:13:21,119 INFO L87 Difference]: Start difference. First operand 69195 states and 104334 transitions. Second operand 9 states. [2019-09-07 19:13:36,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:13:36,667 INFO L93 Difference]: Finished difference Result 174981 states and 315295 transitions. [2019-09-07 19:13:36,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 19:13:36,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 261 [2019-09-07 19:13:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:13:37,327 INFO L225 Difference]: With dead ends: 174981 [2019-09-07 19:13:37,327 INFO L226 Difference]: Without dead ends: 97434 [2019-09-07 19:13:37,468 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 269 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 19:13:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97434 states. [2019-09-07 19:13:40,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97434 to 93392. [2019-09-07 19:13:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93392 states. [2019-09-07 19:13:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93392 states to 93392 states and 144405 transitions. [2019-09-07 19:13:41,123 INFO L78 Accepts]: Start accepts. Automaton has 93392 states and 144405 transitions. Word has length 261 [2019-09-07 19:13:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:13:41,123 INFO L475 AbstractCegarLoop]: Abstraction has 93392 states and 144405 transitions. [2019-09-07 19:13:41,123 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:13:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 93392 states and 144405 transitions. [2019-09-07 19:13:41,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-09-07 19:13:41,141 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:13:41,142 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:13:41,142 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:13:41,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:13:41,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1762496145, now seen corresponding path program 1 times [2019-09-07 19:13:41,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:13:41,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:13:41,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:13:41,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:13:41,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:13:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:13:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:13:41,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:13:41,433 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 19:13:41,452 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 19:13:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:13:41,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:13:41,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:13:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:13:43,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:13:43,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:13:43,914 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:13:43,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:13:43,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:13:43,916 INFO L87 Difference]: Start difference. First operand 93392 states and 144405 transitions. Second operand 9 states. [2019-09-07 19:14:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:14:00,232 INFO L93 Difference]: Finished difference Result 228160 states and 424367 transitions. [2019-09-07 19:14:00,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:14:00,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2019-09-07 19:14:00,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:14:00,928 INFO L225 Difference]: With dead ends: 228160 [2019-09-07 19:14:00,929 INFO L226 Difference]: Without dead ends: 134778 [2019-09-07 19:14:01,090 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:14:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134778 states. [2019-09-07 19:14:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134778 to 133833. [2019-09-07 19:14:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133833 states. [2019-09-07 19:14:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133833 states to 133833 states and 236985 transitions. [2019-09-07 19:14:07,582 INFO L78 Accepts]: Start accepts. Automaton has 133833 states and 236985 transitions. Word has length 322 [2019-09-07 19:14:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:14:07,583 INFO L475 AbstractCegarLoop]: Abstraction has 133833 states and 236985 transitions. [2019-09-07 19:14:07,583 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:14:07,583 INFO L276 IsEmpty]: Start isEmpty. Operand 133833 states and 236985 transitions. [2019-09-07 19:14:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2019-09-07 19:14:07,603 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:14:07,603 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 19:14:07,603 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:14:07,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:14:07,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1801629918, now seen corresponding path program 1 times [2019-09-07 19:14:07,604 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:14:07,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:14:07,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:07,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:14:07,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 170 proven. 143 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-09-07 19:14:07,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:14:07,813 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 19:14:07,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:14:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:07,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:14:07,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:14:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Stream closed [2019-09-07 19:14:08,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:14:08,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:14:08,057 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:14:08,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:14:08,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:14:08,058 INFO L87 Difference]: Start difference. First operand 133833 states and 236985 transitions. Second operand 9 states. [2019-09-07 19:14:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:14:25,182 INFO L93 Difference]: Finished difference Result 291710 states and 499214 transitions. [2019-09-07 19:14:25,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:14:25,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 356 [2019-09-07 19:14:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:14:25,687 INFO L225 Difference]: With dead ends: 291710 [2019-09-07 19:14:25,688 INFO L226 Difference]: Without dead ends: 157907 [2019-09-07 19:14:25,944 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 362 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:14:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157907 states. [2019-09-07 19:14:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157907 to 153843. [2019-09-07 19:14:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153843 states. [2019-09-07 19:14:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153843 states to 153843 states and 208199 transitions. [2019-09-07 19:14:29,195 INFO L78 Accepts]: Start accepts. Automaton has 153843 states and 208199 transitions. Word has length 356 [2019-09-07 19:14:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:14:29,196 INFO L475 AbstractCegarLoop]: Abstraction has 153843 states and 208199 transitions. [2019-09-07 19:14:29,196 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:14:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 153843 states and 208199 transitions. [2019-09-07 19:14:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2019-09-07 19:14:29,210 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:14:29,211 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:14:29,211 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:14:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:14:29,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1015017471, now seen corresponding path program 1 times [2019-09-07 19:14:29,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:14:29,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:14:29,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:29,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:14:29,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:14:29,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:14:29,498 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:14:29,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:14:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:29,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:14:29,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:14:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:14:29,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:14:29,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:14:29,737 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:14:29,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:14:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:14:29,737 INFO L87 Difference]: Start difference. First operand 153843 states and 208199 transitions. Second operand 9 states. [2019-09-07 19:14:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:14:43,062 INFO L93 Difference]: Finished difference Result 357045 states and 526149 transitions. [2019-09-07 19:14:43,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:14:43,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 364 [2019-09-07 19:14:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:14:43,795 INFO L225 Difference]: With dead ends: 357045 [2019-09-07 19:14:43,795 INFO L226 Difference]: Without dead ends: 203975 [2019-09-07 19:14:44,050 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:14:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203975 states. [2019-09-07 19:14:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203975 to 203248. [2019-09-07 19:14:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203248 states. [2019-09-07 19:14:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203248 states to 203248 states and 288289 transitions. [2019-09-07 19:14:54,479 INFO L78 Accepts]: Start accepts. Automaton has 203248 states and 288289 transitions. Word has length 364 [2019-09-07 19:14:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:14:54,480 INFO L475 AbstractCegarLoop]: Abstraction has 203248 states and 288289 transitions. [2019-09-07 19:14:54,480 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:14:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 203248 states and 288289 transitions. [2019-09-07 19:14:54,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2019-09-07 19:14:54,491 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:14:54,492 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:54,492 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:14:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:14:54,493 INFO L82 PathProgramCache]: Analyzing trace with hash 829922617, now seen corresponding path program 1 times [2019-09-07 19:14:54,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:14:54,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:14:54,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:54,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:14:54,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2019-09-07 19:14:54,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:14:54,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:14:54,806 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:14:54,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:14:54,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:14:54,807 INFO L87 Difference]: Start difference. First operand 203248 states and 288289 transitions. Second operand 4 states. [2019-09-07 19:15:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:06,765 INFO L93 Difference]: Finished difference Result 396916 states and 562776 transitions. [2019-09-07 19:15:06,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:15:06,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 387 [2019-09-07 19:15:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:07,413 INFO L225 Difference]: With dead ends: 396916 [2019-09-07 19:15:07,413 INFO L226 Difference]: Without dead ends: 194441 [2019-09-07 19:15:07,789 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 19:15:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194441 states. [2019-09-07 19:15:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194441 to 194396. [2019-09-07 19:15:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194396 states. [2019-09-07 19:15:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194396 states to 194396 states and 246908 transitions. [2019-09-07 19:15:12,239 INFO L78 Accepts]: Start accepts. Automaton has 194396 states and 246908 transitions. Word has length 387 [2019-09-07 19:15:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:12,240 INFO L475 AbstractCegarLoop]: Abstraction has 194396 states and 246908 transitions. [2019-09-07 19:15:12,240 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:15:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 194396 states and 246908 transitions. [2019-09-07 19:15:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2019-09-07 19:15:12,280 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:12,281 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 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 19:15:12,281 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash -276391639, now seen corresponding path program 1 times [2019-09-07 19:15:12,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:12,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:12,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:12,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:12,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 375 proven. 54 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2019-09-07 19:15:12,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:15:12,783 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 19:15:12,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:12,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:15:12,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:15:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2019-09-07 19:15:13,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:15:13,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-07 19:15:13,142 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:15:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:15:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:15:13,144 INFO L87 Difference]: Start difference. First operand 194396 states and 246908 transitions. Second operand 4 states. [2019-09-07 19:15:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:23,970 INFO L93 Difference]: Finished difference Result 391932 states and 504110 transitions. [2019-09-07 19:15:23,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 19:15:23,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 522 [2019-09-07 19:15:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:24,532 INFO L225 Difference]: With dead ends: 391932 [2019-09-07 19:15:24,532 INFO L226 Difference]: Without dead ends: 198309 [2019-09-07 19:15:24,768 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 525 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:15:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198309 states. [2019-09-07 19:15:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198309 to 194137. [2019-09-07 19:15:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194137 states. [2019-09-07 19:15:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194137 states to 194137 states and 239443 transitions. [2019-09-07 19:15:28,112 INFO L78 Accepts]: Start accepts. Automaton has 194137 states and 239443 transitions. Word has length 522 [2019-09-07 19:15:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:28,113 INFO L475 AbstractCegarLoop]: Abstraction has 194137 states and 239443 transitions. [2019-09-07 19:15:28,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:15:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 194137 states and 239443 transitions. [2019-09-07 19:15:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2019-09-07 19:15:28,159 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:28,160 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:15:28,160 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:28,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1334519583, now seen corresponding path program 1 times [2019-09-07 19:15:28,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:28,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:28,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:28,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:28,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 639 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-09-07 19:15:29,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:15:29,783 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 19:15:29,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:29,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:15:29,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:15:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 554 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2019-09-07 19:15:30,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:15:30,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-09-07 19:15:30,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:15:30,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:15:30,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:15:30,117 INFO L87 Difference]: Start difference. First operand 194137 states and 239443 transitions. Second operand 6 states. [2019-09-07 19:15:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:42,933 INFO L93 Difference]: Finished difference Result 442739 states and 551972 transitions. [2019-09-07 19:15:42,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 19:15:42,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 582 [2019-09-07 19:15:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:42,941 INFO L225 Difference]: With dead ends: 442739 [2019-09-07 19:15:42,941 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 19:15:43,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:15:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 19:15:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 19:15:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 19:15:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 19:15:43,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 582 [2019-09-07 19:15:43,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:43,493 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 19:15:43,493 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:15:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 19:15:43,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 19:15:43,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 19:15:45,837 WARN L188 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-09-07 19:15:49,670 WARN L188 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 39 [2019-09-07 19:17:11,614 WARN L188 SmtUtils]: Spent 1.33 m on a formula simplification. DAG size of input: 3847 DAG size of output: 3597 [2019-09-07 19:18:31,874 WARN L188 SmtUtils]: Spent 1.34 m on a formula simplification. DAG size of input: 3847 DAG size of output: 3597 [2019-09-07 19:18:36,769 WARN L188 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 780 DAG size of output: 65 [2019-09-07 19:18:41,894 WARN L188 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 780 DAG size of output: 65 [2019-09-07 19:18:46,917 WARN L188 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 780 DAG size of output: 65 [2019-09-07 19:18:51,904 WARN L188 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 780 DAG size of output: 65 [2019-09-07 19:18:56,989 WARN L188 SmtUtils]: Spent 5.06 s on a formula simplification. DAG size of input: 780 DAG size of output: 65 [2019-09-07 19:19:01,902 WARN L188 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 780 DAG size of output: 65 [2019-09-07 19:19:06,630 WARN L188 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 780 DAG size of output: 65 [2019-09-07 19:22:03,274 WARN L188 SmtUtils]: Spent 2.94 m on a formula simplification. DAG size of input: 3557 DAG size of output: 68