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/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:51:27,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:51:27,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:51:27,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 07:51:27,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 07:51:27,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 07:51:27,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 07:51:27,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 07:51:27,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 07:51:27,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 07:51:27,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 07:51:27,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 07:51:27,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:51:27,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:51:27,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:51:27,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:51:27,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:51:27,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:51:27,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:51:27,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:51:27,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:51:27,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:51:27,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:51:27,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:51:27,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:51:27,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 07:51:27,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 07:51:27,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 07:51:27,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 07:51:27,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 07:51:27,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 07:51:27,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 07:51:27,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 07:51:27,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:51:27,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:51:27,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:51:27,245 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 [2019-09-08 07:51:27,268 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:51:27,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:51:27,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:51:27,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:51:27,269 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:51:27,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:51:27,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:51:27,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:51:27,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:51:27,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:51:27,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:51:27,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:51:27,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:51:27,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:51:27,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:51:27,272 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:51:27,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:51:27,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:51:27,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:51:27,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:51:27,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:51:27,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:51:27,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:51:27,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:51:27,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:51:27,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:51:27,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:51:27,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:51:27,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:51:27,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:51:27,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:51:27,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:51:27,318 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:51:27,319 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:51:27,319 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2019-09-08 07:51:27,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fe8816e/fa28b0f934214c63b298eea65d5b86f5/FLAG0125a68d6 [2019-09-08 07:51:27,860 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:51:27,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2019-09-08 07:51:27,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fe8816e/fa28b0f934214c63b298eea65d5b86f5/FLAG0125a68d6 [2019-09-08 07:51:28,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fe8816e/fa28b0f934214c63b298eea65d5b86f5 [2019-09-08 07:51:28,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:51:28,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:51:28,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:51:28,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:51:28,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:51:28,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a39f893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28, skipping insertion in model container [2019-09-08 07:51:28,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,240 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:51:28,295 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:51:28,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:51:28,759 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:51:28,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:51:28,857 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:51:28,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28 WrapperNode [2019-09-08 07:51:28,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:51:28,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:51:28,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:51:28,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:51:28,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (1/1) ... [2019-09-08 07:51:28,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:51:28,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:51:28,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:51:28,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:51:28,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (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 [2019-09-08 07:51:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:51:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:51:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:51:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:51:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:51:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 07:51:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:51:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:51:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:51:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:51:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:51:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:51:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:51:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 07:51:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:51:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:51:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:51:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:51:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:51:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:51:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:51:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 07:51:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:51:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:51:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:51:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:51:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:51:29,589 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:51:29,590 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:51:29,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:51:29 BoogieIcfgContainer [2019-09-08 07:51:29,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:51:29,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:51:29,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:51:29,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:51:29,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:51:28" (1/3) ... [2019-09-08 07:51:29,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184843bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:51:29, skipping insertion in model container [2019-09-08 07:51:29,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:51:28" (2/3) ... [2019-09-08 07:51:29,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184843bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:51:29, skipping insertion in model container [2019-09-08 07:51:29,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:51:29" (3/3) ... [2019-09-08 07:51:29,599 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2019-09-08 07:51:29,608 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:51:29,616 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:51:29,632 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:51:29,663 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:51:29,664 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:51:29,665 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:51:29,665 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:51:29,665 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:51:29,665 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:51:29,665 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:51:29,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:51:29,666 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:51:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2019-09-08 07:51:29,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 07:51:29,696 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:29,698 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] [2019-09-08 07:51:29,700 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:29,706 INFO L82 PathProgramCache]: Analyzing trace with hash -40511920, now seen corresponding path program 1 times [2019-09-08 07:51:29,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:29,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:29,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:29,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:29,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:30,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:30,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:51:30,119 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:51:30,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:51:30,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:51:30,133 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 5 states. [2019-09-08 07:51:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:30,258 INFO L93 Difference]: Finished difference Result 176 states and 257 transitions. [2019-09-08 07:51:30,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:51:30,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2019-09-08 07:51:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:30,271 INFO L225 Difference]: With dead ends: 176 [2019-09-08 07:51:30,272 INFO L226 Difference]: Without dead ends: 101 [2019-09-08 07:51:30,275 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 07:51:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-09-08 07:51:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2019-09-08 07:51:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-09-08 07:51:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2019-09-08 07:51:30,324 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 54 [2019-09-08 07:51:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:30,325 INFO L475 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2019-09-08 07:51:30,325 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:51:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2019-09-08 07:51:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-09-08 07:51:30,328 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:30,329 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:30,329 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:30,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1067510165, now seen corresponding path program 1 times [2019-09-08 07:51:30,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:30,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:30,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:30,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:30,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:30,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:30,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:51:30,666 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:51:30,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:51:30,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:51:30,667 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand 11 states. [2019-09-08 07:51:33,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:33,294 INFO L93 Difference]: Finished difference Result 760 states and 1091 transitions. [2019-09-08 07:51:33,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-08 07:51:33,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2019-09-08 07:51:33,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:33,310 INFO L225 Difference]: With dead ends: 760 [2019-09-08 07:51:33,310 INFO L226 Difference]: Without dead ends: 694 [2019-09-08 07:51:33,313 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 07:51:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-09-08 07:51:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 499. [2019-09-08 07:51:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-09-08 07:51:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 700 transitions. [2019-09-08 07:51:33,426 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 700 transitions. Word has length 76 [2019-09-08 07:51:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:33,426 INFO L475 AbstractCegarLoop]: Abstraction has 499 states and 700 transitions. [2019-09-08 07:51:33,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:51:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 700 transitions. [2019-09-08 07:51:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 07:51:33,431 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:33,431 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:33,431 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:33,432 INFO L82 PathProgramCache]: Analyzing trace with hash -933077243, now seen corresponding path program 1 times [2019-09-08 07:51:33,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:33,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:33,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:33,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:33,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:33,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:33,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 07:51:33,527 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 07:51:33,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 07:51:33,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 07:51:33,527 INFO L87 Difference]: Start difference. First operand 499 states and 700 transitions. Second operand 3 states. [2019-09-08 07:51:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:33,604 INFO L93 Difference]: Finished difference Result 1383 states and 1980 transitions. [2019-09-08 07:51:33,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 07:51:33,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2019-09-08 07:51:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:33,613 INFO L225 Difference]: With dead ends: 1383 [2019-09-08 07:51:33,613 INFO L226 Difference]: Without dead ends: 919 [2019-09-08 07:51:33,617 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 07:51:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-09-08 07:51:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 903. [2019-09-08 07:51:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-09-08 07:51:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1268 transitions. [2019-09-08 07:51:33,683 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1268 transitions. Word has length 78 [2019-09-08 07:51:33,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:33,684 INFO L475 AbstractCegarLoop]: Abstraction has 903 states and 1268 transitions. [2019-09-08 07:51:33,684 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 07:51:33,684 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1268 transitions. [2019-09-08 07:51:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 07:51:33,688 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:33,688 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:33,688 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:33,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:33,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2074187597, now seen corresponding path program 1 times [2019-09-08 07:51:33,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:33,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:33,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:33,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:33,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:33,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:33,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:51:33,848 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:51:33,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:51:33,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:51:33,849 INFO L87 Difference]: Start difference. First operand 903 states and 1268 transitions. Second operand 5 states. [2019-09-08 07:51:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:34,329 INFO L93 Difference]: Finished difference Result 2543 states and 3614 transitions. [2019-09-08 07:51:34,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:51:34,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-08 07:51:34,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:34,341 INFO L225 Difference]: With dead ends: 2543 [2019-09-08 07:51:34,342 INFO L226 Difference]: Without dead ends: 1675 [2019-09-08 07:51:34,346 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:51:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2019-09-08 07:51:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1673. [2019-09-08 07:51:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1673 states. [2019-09-08 07:51:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2340 transitions. [2019-09-08 07:51:34,459 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2340 transitions. Word has length 78 [2019-09-08 07:51:34,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:34,460 INFO L475 AbstractCegarLoop]: Abstraction has 1673 states and 2340 transitions. [2019-09-08 07:51:34,460 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:51:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2340 transitions. [2019-09-08 07:51:34,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 07:51:34,463 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:34,463 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:34,463 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:34,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:34,464 INFO L82 PathProgramCache]: Analyzing trace with hash -973270845, now seen corresponding path program 1 times [2019-09-08 07:51:34,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:34,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:34,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:34,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:34,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:34,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:34,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:51:34,618 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:51:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:51:34,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:51:34,619 INFO L87 Difference]: Start difference. First operand 1673 states and 2340 transitions. Second operand 5 states. [2019-09-08 07:51:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:35,188 INFO L93 Difference]: Finished difference Result 4769 states and 6718 transitions. [2019-09-08 07:51:35,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:51:35,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-08 07:51:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:35,206 INFO L225 Difference]: With dead ends: 4769 [2019-09-08 07:51:35,206 INFO L226 Difference]: Without dead ends: 3131 [2019-09-08 07:51:35,212 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:51:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2019-09-08 07:51:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3129. [2019-09-08 07:51:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2019-09-08 07:51:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 4336 transitions. [2019-09-08 07:51:35,461 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 4336 transitions. Word has length 78 [2019-09-08 07:51:35,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:35,461 INFO L475 AbstractCegarLoop]: Abstraction has 3129 states and 4336 transitions. [2019-09-08 07:51:35,461 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:51:35,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 4336 transitions. [2019-09-08 07:51:35,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 07:51:35,463 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:35,463 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:35,463 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:35,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:35,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1683468301, now seen corresponding path program 1 times [2019-09-08 07:51:35,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:35,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:35,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:35,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:35,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:35,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:35,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:51:35,549 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:51:35,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:51:35,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:51:35,549 INFO L87 Difference]: Start difference. First operand 3129 states and 4336 transitions. Second operand 5 states. [2019-09-08 07:51:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:36,179 INFO L93 Difference]: Finished difference Result 8933 states and 12458 transitions. [2019-09-08 07:51:36,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:51:36,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-08 07:51:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:36,214 INFO L225 Difference]: With dead ends: 8933 [2019-09-08 07:51:36,214 INFO L226 Difference]: Without dead ends: 5839 [2019-09-08 07:51:36,224 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:51:36,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5839 states. [2019-09-08 07:51:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5839 to 5837. [2019-09-08 07:51:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5837 states. [2019-09-08 07:51:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5837 states to 5837 states and 8004 transitions. [2019-09-08 07:51:36,618 INFO L78 Accepts]: Start accepts. Automaton has 5837 states and 8004 transitions. Word has length 78 [2019-09-08 07:51:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:36,620 INFO L475 AbstractCegarLoop]: Abstraction has 5837 states and 8004 transitions. [2019-09-08 07:51:36,621 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:51:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5837 states and 8004 transitions. [2019-09-08 07:51:36,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 07:51:36,625 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:36,626 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:36,633 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:36,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:36,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1415753725, now seen corresponding path program 1 times [2019-09-08 07:51:36,636 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:36,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:36,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:36,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:36,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:36,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:36,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:51:36,950 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:51:36,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:51:36,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:51:36,951 INFO L87 Difference]: Start difference. First operand 5837 states and 8004 transitions. Second operand 11 states. [2019-09-08 07:51:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:39,287 INFO L93 Difference]: Finished difference Result 14003 states and 19787 transitions. [2019-09-08 07:51:39,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-08 07:51:39,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2019-09-08 07:51:39,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:39,349 INFO L225 Difference]: With dead ends: 14003 [2019-09-08 07:51:39,350 INFO L226 Difference]: Without dead ends: 8201 [2019-09-08 07:51:39,371 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 07:51:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2019-09-08 07:51:39,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 5861. [2019-09-08 07:51:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5861 states. [2019-09-08 07:51:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5861 states to 5861 states and 7988 transitions. [2019-09-08 07:51:39,862 INFO L78 Accepts]: Start accepts. Automaton has 5861 states and 7988 transitions. Word has length 78 [2019-09-08 07:51:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:39,863 INFO L475 AbstractCegarLoop]: Abstraction has 5861 states and 7988 transitions. [2019-09-08 07:51:39,863 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:51:39,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5861 states and 7988 transitions. [2019-09-08 07:51:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-08 07:51:39,864 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:39,864 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:39,865 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1035416937, now seen corresponding path program 1 times [2019-09-08 07:51:39,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:39,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:39,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:39,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:39,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:39,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:39,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:51:39,983 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:51:39,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:51:39,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:51:39,984 INFO L87 Difference]: Start difference. First operand 5861 states and 7988 transitions. Second operand 5 states. [2019-09-08 07:51:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:40,707 INFO L93 Difference]: Finished difference Result 14411 states and 19759 transitions. [2019-09-08 07:51:40,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:51:40,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2019-09-08 07:51:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:40,751 INFO L225 Difference]: With dead ends: 14411 [2019-09-08 07:51:40,751 INFO L226 Difference]: Without dead ends: 8585 [2019-09-08 07:51:40,769 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:51:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2019-09-08 07:51:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 8365. [2019-09-08 07:51:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8365 states. [2019-09-08 07:51:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 11276 transitions. [2019-09-08 07:51:41,203 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 11276 transitions. Word has length 79 [2019-09-08 07:51:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:41,203 INFO L475 AbstractCegarLoop]: Abstraction has 8365 states and 11276 transitions. [2019-09-08 07:51:41,203 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:51:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 11276 transitions. [2019-09-08 07:51:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-08 07:51:41,205 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:41,205 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:41,205 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:41,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:41,205 INFO L82 PathProgramCache]: Analyzing trace with hash 612008024, now seen corresponding path program 1 times [2019-09-08 07:51:41,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:41,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:41,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:41,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:41,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:41,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:41,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 07:51:41,310 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:51:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:51:41,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:51:41,311 INFO L87 Difference]: Start difference. First operand 8365 states and 11276 transitions. Second operand 8 states. [2019-09-08 07:51:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:41,774 INFO L93 Difference]: Finished difference Result 10239 states and 14548 transitions. [2019-09-08 07:51:41,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:51:41,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2019-09-08 07:51:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:41,821 INFO L225 Difference]: With dead ends: 10239 [2019-09-08 07:51:41,822 INFO L226 Difference]: Without dead ends: 10237 [2019-09-08 07:51:41,828 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:51:41,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10237 states. [2019-09-08 07:51:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10237 to 9229. [2019-09-08 07:51:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9229 states. [2019-09-08 07:51:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9229 states to 9229 states and 12164 transitions. [2019-09-08 07:51:42,325 INFO L78 Accepts]: Start accepts. Automaton has 9229 states and 12164 transitions. Word has length 79 [2019-09-08 07:51:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:42,326 INFO L475 AbstractCegarLoop]: Abstraction has 9229 states and 12164 transitions. [2019-09-08 07:51:42,326 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:51:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9229 states and 12164 transitions. [2019-09-08 07:51:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:51:42,327 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:42,328 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:42,328 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash 902213724, now seen corresponding path program 1 times [2019-09-08 07:51:42,329 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:42,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:42,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:42,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:42,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:42,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:42,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:51:42,558 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:51:42,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:51:42,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:51:42,562 INFO L87 Difference]: Start difference. First operand 9229 states and 12164 transitions. Second operand 9 states. [2019-09-08 07:51:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:43,490 INFO L93 Difference]: Finished difference Result 17487 states and 23237 transitions. [2019-09-08 07:51:43,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:51:43,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:51:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:43,533 INFO L225 Difference]: With dead ends: 17487 [2019-09-08 07:51:43,533 INFO L226 Difference]: Without dead ends: 10901 [2019-09-08 07:51:43,554 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:51:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10901 states. [2019-09-08 07:51:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10901 to 9261. [2019-09-08 07:51:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9261 states. [2019-09-08 07:51:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9261 states to 9261 states and 12204 transitions. [2019-09-08 07:51:44,235 INFO L78 Accepts]: Start accepts. Automaton has 9261 states and 12204 transitions. Word has length 80 [2019-09-08 07:51:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:44,236 INFO L475 AbstractCegarLoop]: Abstraction has 9261 states and 12204 transitions. [2019-09-08 07:51:44,236 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:51:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 9261 states and 12204 transitions. [2019-09-08 07:51:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-08 07:51:44,238 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:44,238 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:44,238 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:44,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:44,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1065134300, now seen corresponding path program 1 times [2019-09-08 07:51:44,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:44,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:44,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:44,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:44,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:51:44,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:51:44,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:51:44,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:51:44,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:51:44,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:51:44,376 INFO L87 Difference]: Start difference. First operand 9261 states and 12204 transitions. Second operand 5 states. [2019-09-08 07:51:45,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:45,192 INFO L93 Difference]: Finished difference Result 19725 states and 26101 transitions. [2019-09-08 07:51:45,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:51:45,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2019-09-08 07:51:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:45,233 INFO L225 Difference]: With dead ends: 19725 [2019-09-08 07:51:45,233 INFO L226 Difference]: Without dead ends: 13135 [2019-09-08 07:51:45,250 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:51:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13135 states. [2019-09-08 07:51:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13135 to 13130. [2019-09-08 07:51:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2019-09-08 07:51:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 17029 transitions. [2019-09-08 07:51:45,874 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 17029 transitions. Word has length 81 [2019-09-08 07:51:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:45,874 INFO L475 AbstractCegarLoop]: Abstraction has 13130 states and 17029 transitions. [2019-09-08 07:51:45,874 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:51:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 17029 transitions. [2019-09-08 07:51:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-08 07:51:45,880 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:45,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:45,881 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash 400882303, now seen corresponding path program 1 times [2019-09-08 07:51:45,881 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:45,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:45,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:45,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:45,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 07:51:45,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:51:45,973 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-09-08 07:51:45,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:46,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:51:46,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:51:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 07:51:46,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:51:46,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2019-09-08 07:51:46,355 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 07:51:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 07:51:46,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:51:46,356 INFO L87 Difference]: Start difference. First operand 13130 states and 17029 transitions. Second operand 12 states. [2019-09-08 07:51:49,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:49,073 INFO L93 Difference]: Finished difference Result 22511 states and 29154 transitions. [2019-09-08 07:51:49,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-08 07:51:49,074 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2019-09-08 07:51:49,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:49,108 INFO L225 Difference]: With dead ends: 22511 [2019-09-08 07:51:49,108 INFO L226 Difference]: Without dead ends: 9445 [2019-09-08 07:51:49,158 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2019-09-08 07:51:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9445 states. [2019-09-08 07:51:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9445 to 8807. [2019-09-08 07:51:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8807 states. [2019-09-08 07:51:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8807 states to 8807 states and 11184 transitions. [2019-09-08 07:51:49,897 INFO L78 Accepts]: Start accepts. Automaton has 8807 states and 11184 transitions. Word has length 123 [2019-09-08 07:51:49,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:49,897 INFO L475 AbstractCegarLoop]: Abstraction has 8807 states and 11184 transitions. [2019-09-08 07:51:49,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 07:51:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8807 states and 11184 transitions. [2019-09-08 07:51:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 07:51:49,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:49,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:49,904 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:49,904 INFO L82 PathProgramCache]: Analyzing trace with hash 735244934, now seen corresponding path program 1 times [2019-09-08 07:51:49,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:49,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:49,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:49,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:49,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 07:51:50,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:51:50,250 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) [2019-09-08 07:51:50,274 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 [2019-09-08 07:51:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:50,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:51:50,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:51:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 07:51:50,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:51:50,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2019-09-08 07:51:50,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 07:51:50,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 07:51:50,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2019-09-08 07:51:50,639 INFO L87 Difference]: Start difference. First operand 8807 states and 11184 transitions. Second operand 22 states. [2019-09-08 07:51:52,863 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2019-09-08 07:51:57,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:57,498 INFO L93 Difference]: Finished difference Result 28764 states and 37366 transitions. [2019-09-08 07:51:57,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-08 07:51:57,499 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 125 [2019-09-08 07:51:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:57,566 INFO L225 Difference]: With dead ends: 28764 [2019-09-08 07:51:57,566 INFO L226 Difference]: Without dead ends: 22738 [2019-09-08 07:51:57,583 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=939, Invalid=4173, Unknown=0, NotChecked=0, Total=5112 [2019-09-08 07:51:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22738 states. [2019-09-08 07:51:58,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22738 to 16874. [2019-09-08 07:51:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16874 states. [2019-09-08 07:51:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16874 states to 16874 states and 21515 transitions. [2019-09-08 07:51:58,897 INFO L78 Accepts]: Start accepts. Automaton has 16874 states and 21515 transitions. Word has length 125 [2019-09-08 07:51:58,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:51:58,897 INFO L475 AbstractCegarLoop]: Abstraction has 16874 states and 21515 transitions. [2019-09-08 07:51:58,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-08 07:51:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 16874 states and 21515 transitions. [2019-09-08 07:51:58,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 07:51:58,902 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:51:58,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:51:58,902 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:51:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:51:58,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1971017990, now seen corresponding path program 1 times [2019-09-08 07:51:58,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:51:58,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:51:58,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:58,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:51:58,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:51:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:51:59,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:51:59,108 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) [2019-09-08 07:51:59,134 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 [2019-09-08 07:51:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:51:59,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:51:59,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:51:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:51:59,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:51:59,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2019-09-08 07:51:59,486 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 07:51:59,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 07:51:59,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2019-09-08 07:51:59,487 INFO L87 Difference]: Start difference. First operand 16874 states and 21515 transitions. Second operand 22 states. [2019-09-08 07:52:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:52:05,219 INFO L93 Difference]: Finished difference Result 34707 states and 44524 transitions. [2019-09-08 07:52:05,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-09-08 07:52:05,220 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 125 [2019-09-08 07:52:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:52:05,311 INFO L225 Difference]: With dead ends: 34707 [2019-09-08 07:52:05,311 INFO L226 Difference]: Without dead ends: 26196 [2019-09-08 07:52:05,335 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=708, Invalid=2952, Unknown=0, NotChecked=0, Total=3660 [2019-09-08 07:52:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26196 states. [2019-09-08 07:52:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26196 to 25764. [2019-09-08 07:52:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25764 states. [2019-09-08 07:52:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25764 states to 25764 states and 32991 transitions. [2019-09-08 07:52:08,009 INFO L78 Accepts]: Start accepts. Automaton has 25764 states and 32991 transitions. Word has length 125 [2019-09-08 07:52:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:08,010 INFO L475 AbstractCegarLoop]: Abstraction has 25764 states and 32991 transitions. [2019-09-08 07:52:08,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-08 07:52:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 25764 states and 32991 transitions. [2019-09-08 07:52:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 07:52:08,014 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:08,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:08,015 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:08,015 INFO L82 PathProgramCache]: Analyzing trace with hash 741491750, now seen corresponding path program 1 times [2019-09-08 07:52:08,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:08,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:08,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:08,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:08,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 07:52:08,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:08,229 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 [2019-09-08 07:52:08,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:08,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:52:08,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 07:52:08,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:52:08,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2019-09-08 07:52:08,844 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 07:52:08,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 07:52:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2019-09-08 07:52:08,845 INFO L87 Difference]: Start difference. First operand 25764 states and 32991 transitions. Second operand 24 states. [2019-09-08 07:52:17,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:52:17,059 INFO L93 Difference]: Finished difference Result 52971 states and 68146 transitions. [2019-09-08 07:52:17,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-08 07:52:17,060 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 125 [2019-09-08 07:52:17,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:52:17,192 INFO L225 Difference]: With dead ends: 52971 [2019-09-08 07:52:17,193 INFO L226 Difference]: Without dead ends: 43909 [2019-09-08 07:52:17,225 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 147 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=819, Invalid=4583, Unknown=0, NotChecked=0, Total=5402 [2019-09-08 07:52:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43909 states. [2019-09-08 07:52:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43909 to 36031. [2019-09-08 07:52:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36031 states. [2019-09-08 07:52:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36031 states to 36031 states and 46434 transitions. [2019-09-08 07:52:19,565 INFO L78 Accepts]: Start accepts. Automaton has 36031 states and 46434 transitions. Word has length 125 [2019-09-08 07:52:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:19,565 INFO L475 AbstractCegarLoop]: Abstraction has 36031 states and 46434 transitions. [2019-09-08 07:52:19,565 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 07:52:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 36031 states and 46434 transitions. [2019-09-08 07:52:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-08 07:52:19,571 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:19,572 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:19,572 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:19,572 INFO L82 PathProgramCache]: Analyzing trace with hash -721975086, now seen corresponding path program 1 times [2019-09-08 07:52:19,572 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:19,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:19,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:19,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:19,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-08 07:52:19,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:19,854 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) [2019-09-08 07:52:19,873 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 [2019-09-08 07:52:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:19,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 07:52:19,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:20,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:52:20,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:52:20,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2019-09-08 07:52:20,595 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-08 07:52:20,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-08 07:52:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2019-09-08 07:52:20,596 INFO L87 Difference]: Start difference. First operand 36031 states and 46434 transitions. Second operand 31 states. [2019-09-08 07:52:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:52:30,081 INFO L93 Difference]: Finished difference Result 132544 states and 169186 transitions. [2019-09-08 07:52:30,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-08 07:52:30,082 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 126 [2019-09-08 07:52:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:52:30,341 INFO L225 Difference]: With dead ends: 132544 [2019-09-08 07:52:30,342 INFO L226 Difference]: Without dead ends: 96598 [2019-09-08 07:52:30,420 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1102, Invalid=4750, Unknown=0, NotChecked=0, Total=5852 [2019-09-08 07:52:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96598 states. [2019-09-08 07:52:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96598 to 90604. [2019-09-08 07:52:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90604 states. [2019-09-08 07:52:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90604 states to 90604 states and 116320 transitions. [2019-09-08 07:52:38,001 INFO L78 Accepts]: Start accepts. Automaton has 90604 states and 116320 transitions. Word has length 126 [2019-09-08 07:52:38,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:38,001 INFO L475 AbstractCegarLoop]: Abstraction has 90604 states and 116320 transitions. [2019-09-08 07:52:38,001 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-08 07:52:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 90604 states and 116320 transitions. [2019-09-08 07:52:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-08 07:52:38,012 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:38,012 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:38,013 INFO L418 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:38,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1453942512, now seen corresponding path program 1 times [2019-09-08 07:52:38,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:38,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:38,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:38,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:38,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:52:38,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:38,337 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 [2019-09-08 07:52:38,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:38,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:52:38,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:52:38,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:52:38,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2019-09-08 07:52:38,737 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 07:52:38,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 07:52:38,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2019-09-08 07:52:38,739 INFO L87 Difference]: Start difference. First operand 90604 states and 116320 transitions. Second operand 26 states. [2019-09-08 07:53:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:53:00,257 INFO L93 Difference]: Finished difference Result 300814 states and 387590 transitions. [2019-09-08 07:53:00,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2019-09-08 07:53:00,258 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 126 [2019-09-08 07:53:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:53:00,826 INFO L225 Difference]: With dead ends: 300814 [2019-09-08 07:53:00,826 INFO L226 Difference]: Without dead ends: 209470 [2019-09-08 07:53:00,937 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5070 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2633, Invalid=12619, Unknown=0, NotChecked=0, Total=15252 [2019-09-08 07:53:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209470 states. [2019-09-08 07:53:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209470 to 192122. [2019-09-08 07:53:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192122 states. [2019-09-08 07:53:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192122 states to 192122 states and 244920 transitions. [2019-09-08 07:53:18,933 INFO L78 Accepts]: Start accepts. Automaton has 192122 states and 244920 transitions. Word has length 126 [2019-09-08 07:53:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:53:18,933 INFO L475 AbstractCegarLoop]: Abstraction has 192122 states and 244920 transitions. [2019-09-08 07:53:18,933 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 07:53:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 192122 states and 244920 transitions. [2019-09-08 07:53:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:53:18,943 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:53:18,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:53:18,944 INFO L418 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:53:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:53:18,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1532363283, now seen corresponding path program 1 times [2019-09-08 07:53:18,944 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:53:18,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:53:18,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:18,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:18,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:53:19,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:53:19,016 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) [2019-09-08 07:53:19,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:53:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:19,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:53:19,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:53:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:53:19,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:53:19,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 13 [2019-09-08 07:53:19,235 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:53:19,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:53:19,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:53:19,236 INFO L87 Difference]: Start difference. First operand 192122 states and 244920 transitions. Second operand 13 states. [2019-09-08 07:53:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:53:29,482 INFO L93 Difference]: Finished difference Result 287688 states and 369126 transitions. [2019-09-08 07:53:29,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 07:53:29,483 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 127 [2019-09-08 07:53:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:53:29,705 INFO L225 Difference]: With dead ends: 287688 [2019-09-08 07:53:29,705 INFO L226 Difference]: Without dead ends: 95722 [2019-09-08 07:53:29,865 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2019-09-08 07:53:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95722 states. [2019-09-08 07:53:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95722 to 93828. [2019-09-08 07:53:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93828 states. [2019-09-08 07:53:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93828 states to 93828 states and 117630 transitions. [2019-09-08 07:53:36,963 INFO L78 Accepts]: Start accepts. Automaton has 93828 states and 117630 transitions. Word has length 127 [2019-09-08 07:53:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:53:36,964 INFO L475 AbstractCegarLoop]: Abstraction has 93828 states and 117630 transitions. [2019-09-08 07:53:36,964 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:53:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 93828 states and 117630 transitions. [2019-09-08 07:53:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:53:36,970 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:53:36,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:53:36,970 INFO L418 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:53:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:53:36,971 INFO L82 PathProgramCache]: Analyzing trace with hash 75160112, now seen corresponding path program 1 times [2019-09-08 07:53:36,971 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:53:36,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:53:36,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:36,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:36,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:53:37,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:53:37,288 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 [2019-09-08 07:53:37,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:37,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 35 conjunts are in the unsatisfiable core [2019-09-08 07:53:37,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:53:37,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:37,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:37,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:38,110 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-09-08 07:53:38,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 07:53:38,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:38,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:38,463 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 48 [2019-09-08 07:53:39,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:53:39,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 07:53:39,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 07:53:39,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-08 07:53:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:53:39,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:53:39,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 38 [2019-09-08 07:53:39,667 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-09-08 07:53:39,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-09-08 07:53:39,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 07:53:39,668 INFO L87 Difference]: Start difference. First operand 93828 states and 117630 transitions. Second operand 38 states. [2019-09-08 07:53:39,955 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2019-09-08 07:53:40,406 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2019-09-08 07:53:42,322 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 07:53:43,114 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-09-08 07:53:43,319 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-08 07:53:43,470 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-08 07:53:43,697 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2019-09-08 07:53:43,940 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2019-09-08 07:53:44,584 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 48 [2019-09-08 07:53:44,722 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-08 07:53:45,007 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2019-09-08 07:53:45,144 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2019-09-08 07:53:45,577 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2019-09-08 07:53:45,966 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2019-09-08 07:53:47,196 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-09-08 07:53:47,579 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-09-08 07:53:47,841 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2019-09-08 07:53:48,248 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2019-09-08 07:53:48,775 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2019-09-08 07:53:49,139 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2019-09-08 07:53:49,410 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 07:53:49,633 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 07:53:51,080 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2019-09-08 07:53:51,659 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2019-09-08 07:53:52,159 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2019-09-08 07:53:52,717 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2019-09-08 07:53:53,158 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-09-08 07:53:55,816 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2019-09-08 07:53:55,971 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-09-08 07:53:56,382 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2019-09-08 07:53:56,540 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-08 07:54:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:54:16,902 INFO L93 Difference]: Finished difference Result 362688 states and 454851 transitions. [2019-09-08 07:54:16,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-08 07:54:16,903 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 127 [2019-09-08 07:54:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:54:17,681 INFO L225 Difference]: With dead ends: 362688 [2019-09-08 07:54:17,681 INFO L226 Difference]: Without dead ends: 269012 [2019-09-08 07:54:17,796 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1981 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1363, Invalid=7193, Unknown=0, NotChecked=0, Total=8556 [2019-09-08 07:54:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269012 states. [2019-09-08 07:54:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269012 to 252340. [2019-09-08 07:54:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252340 states. [2019-09-08 07:54:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252340 states to 252340 states and 318888 transitions. [2019-09-08 07:54:44,845 INFO L78 Accepts]: Start accepts. Automaton has 252340 states and 318888 transitions. Word has length 127 [2019-09-08 07:54:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:54:44,845 INFO L475 AbstractCegarLoop]: Abstraction has 252340 states and 318888 transitions. [2019-09-08 07:54:44,845 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-09-08 07:54:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 252340 states and 318888 transitions. [2019-09-08 07:54:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:54:44,856 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:54:44,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:54:44,857 INFO L418 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:54:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:54:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1990771706, now seen corresponding path program 1 times [2019-09-08 07:54:44,857 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:54:44,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:54:44,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:54:44,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:54:44,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:54:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:54:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 07:54:44,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:54:44,929 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) [2019-09-08 07:54:44,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:54:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:54:45,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:54:45,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:54:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:54:45,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:54:45,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 13 [2019-09-08 07:54:45,148 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:54:45,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:54:45,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:54:45,149 INFO L87 Difference]: Start difference. First operand 252340 states and 318888 transitions. Second operand 13 states. [2019-09-08 07:55:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:55:00,501 INFO L93 Difference]: Finished difference Result 378912 states and 485134 transitions. [2019-09-08 07:55:00,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 07:55:00,501 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 127 [2019-09-08 07:55:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:55:00,824 INFO L225 Difference]: With dead ends: 378912 [2019-09-08 07:55:00,824 INFO L226 Difference]: Without dead ends: 126822 [2019-09-08 07:55:01,039 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2019-09-08 07:55:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126822 states. [2019-09-08 07:55:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126822 to 122678. [2019-09-08 07:55:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122678 states. [2019-09-08 07:55:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122678 states to 122678 states and 152082 transitions. [2019-09-08 07:55:12,711 INFO L78 Accepts]: Start accepts. Automaton has 122678 states and 152082 transitions. Word has length 127 [2019-09-08 07:55:12,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:55:12,712 INFO L475 AbstractCegarLoop]: Abstraction has 122678 states and 152082 transitions. [2019-09-08 07:55:12,712 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:55:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 122678 states and 152082 transitions. [2019-09-08 07:55:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:55:12,720 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:55:12,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:55:12,720 INFO L418 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:55:12,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:55:12,720 INFO L82 PathProgramCache]: Analyzing trace with hash -982677966, now seen corresponding path program 1 times [2019-09-08 07:55:12,721 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:55:12,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:55:12,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:55:12,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:55:12,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:55:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:55:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:55:13,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:55:13,051 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 [2019-09-08 07:55:13,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:55:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:55:13,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:55:13,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:55:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:55:13,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:55:13,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 26 [2019-09-08 07:55:13,342 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 07:55:13,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 07:55:13,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2019-09-08 07:55:13,343 INFO L87 Difference]: Start difference. First operand 122678 states and 152082 transitions. Second operand 26 states. [2019-09-08 07:55:26,096 WARN L188 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-08 07:56:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:56:13,010 INFO L93 Difference]: Finished difference Result 659178 states and 813194 transitions. [2019-09-08 07:56:13,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2019-09-08 07:56:13,011 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 127 [2019-09-08 07:56:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:56:14,275 INFO L225 Difference]: With dead ends: 659178 [2019-09-08 07:56:14,275 INFO L226 Difference]: Without dead ends: 534374 [2019-09-08 07:56:14,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19113 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=5412, Invalid=41460, Unknown=0, NotChecked=0, Total=46872 [2019-09-08 07:56:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534374 states. [2019-09-08 07:57:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534374 to 494004. [2019-09-08 07:57:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494004 states. [2019-09-08 07:57:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494004 states to 494004 states and 611928 transitions. [2019-09-08 07:57:14,562 INFO L78 Accepts]: Start accepts. Automaton has 494004 states and 611928 transitions. Word has length 127 [2019-09-08 07:57:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:57:14,563 INFO L475 AbstractCegarLoop]: Abstraction has 494004 states and 611928 transitions. [2019-09-08 07:57:14,563 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 07:57:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 494004 states and 611928 transitions. [2019-09-08 07:57:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:57:14,580 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:57:14,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:57:14,581 INFO L418 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:57:14,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:57:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash 192444656, now seen corresponding path program 1 times [2019-09-08 07:57:14,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:57:14,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:57:14,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:57:14,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:57:14,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:57:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:57:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 07:57:14,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:57:14,657 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:57:14,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:57:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:57:15,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:57:15,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:57:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:57:15,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:57:15,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-09-08 07:57:15,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 07:57:15,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 07:57:15,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:57:15,912 INFO L87 Difference]: Start difference. First operand 494004 states and 611928 transitions. Second operand 12 states. [2019-09-08 07:58:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:58:08,066 INFO L93 Difference]: Finished difference Result 925074 states and 1144177 transitions. [2019-09-08 07:58:08,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-08 07:58:08,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 127 [2019-09-08 07:58:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:58:09,269 INFO L225 Difference]: With dead ends: 925074 [2019-09-08 07:58:09,269 INFO L226 Difference]: Without dead ends: 430972 [2019-09-08 07:58:09,776 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=552, Invalid=2204, Unknown=0, NotChecked=0, Total=2756 [2019-09-08 07:58:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430972 states. [2019-09-08 07:59:00,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430972 to 377068. [2019-09-08 07:59:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377068 states. [2019-09-08 07:59:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377068 states to 377068 states and 459737 transitions. [2019-09-08 07:59:01,295 INFO L78 Accepts]: Start accepts. Automaton has 377068 states and 459737 transitions. Word has length 127 [2019-09-08 07:59:01,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:59:01,295 INFO L475 AbstractCegarLoop]: Abstraction has 377068 states and 459737 transitions. [2019-09-08 07:59:01,295 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 07:59:01,295 INFO L276 IsEmpty]: Start isEmpty. Operand 377068 states and 459737 transitions. [2019-09-08 07:59:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:59:01,310 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:59:01,310 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:59:01,311 INFO L418 AbstractCegarLoop]: === Iteration 23 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:59:01,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:59:01,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1579226273, now seen corresponding path program 1 times [2019-09-08 07:59:01,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:59:01,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:59:01,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:59:01,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:59:01,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:59:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:59:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:59:01,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:59:01,479 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:59:01,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:59:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:59:01,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:59:01,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:59:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-08 07:59:01,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:59:01,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2019-09-08 07:59:01,772 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 07:59:01,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 07:59:01,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2019-09-08 07:59:01,773 INFO L87 Difference]: Start difference. First operand 377068 states and 459737 transitions. Second operand 17 states. [2019-09-08 07:59:57,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:59:57,543 INFO L93 Difference]: Finished difference Result 850716 states and 1049934 transitions. [2019-09-08 07:59:57,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2019-09-08 07:59:57,544 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 127 [2019-09-08 07:59:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:59:58,606 INFO L225 Difference]: With dead ends: 850716 [2019-09-08 07:59:58,606 INFO L226 Difference]: Without dead ends: 473742 [2019-09-08 07:59:58,994 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3955 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1454, Invalid=9466, Unknown=0, NotChecked=0, Total=10920 [2019-09-08 07:59:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473742 states. [2019-09-08 08:00:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473742 to 414116. [2019-09-08 08:00:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414116 states. [2019-09-08 08:00:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414116 states to 414116 states and 502703 transitions. [2019-09-08 08:00:54,255 INFO L78 Accepts]: Start accepts. Automaton has 414116 states and 502703 transitions. Word has length 127 [2019-09-08 08:00:54,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:00:54,255 INFO L475 AbstractCegarLoop]: Abstraction has 414116 states and 502703 transitions. [2019-09-08 08:00:54,255 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 08:00:54,255 INFO L276 IsEmpty]: Start isEmpty. Operand 414116 states and 502703 transitions. [2019-09-08 08:00:54,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-08 08:00:54,264 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:00:54,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 08:00:54,264 INFO L418 AbstractCegarLoop]: === Iteration 24 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:00:54,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:00:54,265 INFO L82 PathProgramCache]: Analyzing trace with hash 631485281, now seen corresponding path program 1 times [2019-09-08 08:00:54,265 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:00:54,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:00:54,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:00:54,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:00:54,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:00:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:00:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 08:00:54,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 08:00:54,727 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 08:00:54,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:00:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:00:54,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 08:00:54,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 08:00:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:00:55,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 08:00:55,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 25 [2019-09-08 08:00:55,021 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-08 08:00:55,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-08 08:00:55,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2019-09-08 08:00:55,022 INFO L87 Difference]: Start difference. First operand 414116 states and 502703 transitions. Second operand 25 states. [2019-09-08 08:00:56,695 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-08 08:00:57,924 WARN L188 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-09-08 08:00:59,217 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2019-09-08 08:01:01,821 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2019-09-08 08:01:06,519 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2019-09-08 08:01:09,489 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-08 08:01:20,373 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2019-09-08 08:02:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:02:11,194 INFO L93 Difference]: Finished difference Result 1044039 states and 1256928 transitions. [2019-09-08 08:02:11,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2019-09-08 08:02:11,194 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 128 [2019-09-08 08:02:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:02:12,620 INFO L225 Difference]: With dead ends: 1044039 [2019-09-08 08:02:12,620 INFO L226 Difference]: Without dead ends: 642958 [2019-09-08 08:02:13,038 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10088 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=3411, Invalid=23321, Unknown=0, NotChecked=0, Total=26732 [2019-09-08 08:02:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642958 states.