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_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 08:17:44,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 08:17:44,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 08:17:44,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 08:17:44,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 08:17:44,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 08:17:44,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 08:17:44,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 08:17:44,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 08:17:44,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 08:17:44,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 08:17:44,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 08:17:44,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 08:17:44,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 08:17:44,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 08:17:44,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 08:17:44,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 08:17:44,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 08:17:44,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 08:17:44,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 08:17:44,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 08:17:44,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 08:17:44,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 08:17:44,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 08:17:44,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 08:17:44,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 08:17:44,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 08:17:44,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 08:17:44,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 08:17:44,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 08:17:44,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 08:17:44,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 08:17:44,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 08:17:44,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 08:17:44,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 08:17:44,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 08:17:44,175 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 08:17:44,190 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 08:17:44,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 08:17:44,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 08:17:44,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 08:17:44,192 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 08:17:44,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 08:17:44,193 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 08:17:44,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 08:17:44,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 08:17:44,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 08:17:44,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 08:17:44,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 08:17:44,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 08:17:44,194 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 08:17:44,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 08:17:44,195 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 08:17:44,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 08:17:44,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 08:17:44,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 08:17:44,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 08:17:44,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 08:17:44,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 08:17:44,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 08:17:44,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 08:17:44,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 08:17:44,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 08:17:44,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 08:17:44,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 08:17:44,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 08:17:44,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 08:17:44,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 08:17:44,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 08:17:44,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 08:17:44,243 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 08:17:44,244 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c [2019-09-08 08:17:44,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ad07eae/edcb21cb23404e059c5b551744a345bc/FLAG2e6cf8990 [2019-09-08 08:17:44,799 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 08:17:44,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c [2019-09-08 08:17:44,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ad07eae/edcb21cb23404e059c5b551744a345bc/FLAG2e6cf8990 [2019-09-08 08:17:45,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ad07eae/edcb21cb23404e059c5b551744a345bc [2019-09-08 08:17:45,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 08:17:45,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 08:17:45,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 08:17:45,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 08:17:45,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 08:17:45,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:45,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10dcc338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45, skipping insertion in model container [2019-09-08 08:17:45,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:45,180 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 08:17:45,250 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 08:17:45,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 08:17:45,737 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 08:17:45,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 08:17:45,863 INFO L192 MainTranslator]: Completed translation [2019-09-08 08:17:45,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45 WrapperNode [2019-09-08 08:17:45,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 08:17:45,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 08:17:45,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 08:17:45,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 08:17:45,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:45,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:45,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:45,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:45,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:45,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:45,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (1/1) ... [2019-09-08 08:17:46,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 08:17:46,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 08:17:46,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 08:17:46,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 08:17:46,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (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 08:17:46,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 08:17:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 08:17:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 08:17:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 08:17:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 08:17:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 08:17:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 08:17:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 08:17:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 08:17:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 08:17:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 08:17:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 08:17:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 08:17:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 08:17:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 08:17:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 08:17:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 08:17:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 08:17:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 08:17:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 08:17:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 08:17:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 08:17:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 08:17:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 08:17:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 08:17:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 08:17:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 08:17:47,745 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 08:17:47,745 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 08:17:47,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:17:47 BoogieIcfgContainer [2019-09-08 08:17:47,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 08:17:47,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 08:17:47,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 08:17:47,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 08:17:47,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 08:17:45" (1/3) ... [2019-09-08 08:17:47,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e55b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:17:47, skipping insertion in model container [2019-09-08 08:17:47,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:17:45" (2/3) ... [2019-09-08 08:17:47,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e55b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:17:47, skipping insertion in model container [2019-09-08 08:17:47,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:17:47" (3/3) ... [2019-09-08 08:17:47,758 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c [2019-09-08 08:17:47,768 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 08:17:47,780 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 08:17:47,797 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 08:17:47,853 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 08:17:47,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 08:17:47,854 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 08:17:47,855 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 08:17:47,855 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 08:17:47,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 08:17:47,855 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 08:17:47,855 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 08:17:47,856 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 08:17:47,885 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2019-09-08 08:17:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-08 08:17:47,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:17:47,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 08:17:47,906 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:17:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:17:47,913 INFO L82 PathProgramCache]: Analyzing trace with hash 987011754, now seen corresponding path program 1 times [2019-09-08 08:17:47,915 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:17:47,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:17:47,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:17:47,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:17:47,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:17:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:17:48,592 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 08:17:48,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:17:48,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 08:17:48,601 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 08:17:48,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 08:17:48,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 08:17:48,618 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 5 states. [2019-09-08 08:17:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:17:48,788 INFO L93 Difference]: Finished difference Result 503 states and 849 transitions. [2019-09-08 08:17:48,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 08:17:48,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2019-09-08 08:17:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:17:48,808 INFO L225 Difference]: With dead ends: 503 [2019-09-08 08:17:48,809 INFO L226 Difference]: Without dead ends: 342 [2019-09-08 08:17:48,814 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 08:17:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-09-08 08:17:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2019-09-08 08:17:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2019-09-08 08:17:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 555 transitions. [2019-09-08 08:17:48,895 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 555 transitions. Word has length 102 [2019-09-08 08:17:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:17:48,896 INFO L475 AbstractCegarLoop]: Abstraction has 342 states and 555 transitions. [2019-09-08 08:17:48,896 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 08:17:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 555 transitions. [2019-09-08 08:17:48,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-08 08:17:48,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:17:48,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:48,903 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:17:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:17:48,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2122494834, now seen corresponding path program 1 times [2019-09-08 08:17:48,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:17:48,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:17:48,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:17:48,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:17:48,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:17:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:17:49,371 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 08:17:49,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:17:49,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 08:17:49,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 08:17:49,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 08:17:49,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-09-08 08:17:49,374 INFO L87 Difference]: Start difference. First operand 342 states and 555 transitions. Second operand 11 states. [2019-09-08 08:17:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:17:55,211 INFO L93 Difference]: Finished difference Result 1651 states and 2694 transitions. [2019-09-08 08:17:55,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 08:17:55,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 135 [2019-09-08 08:17:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:17:55,235 INFO L225 Difference]: With dead ends: 1651 [2019-09-08 08:17:55,235 INFO L226 Difference]: Without dead ends: 1499 [2019-09-08 08:17:55,243 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=1390, Unknown=0, NotChecked=0, Total=1806 [2019-09-08 08:17:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2019-09-08 08:17:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1272. [2019-09-08 08:17:55,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2019-09-08 08:17:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 2064 transitions. [2019-09-08 08:17:55,401 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 2064 transitions. Word has length 135 [2019-09-08 08:17:55,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:17:55,407 INFO L475 AbstractCegarLoop]: Abstraction has 1272 states and 2064 transitions. [2019-09-08 08:17:55,407 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 08:17:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 2064 transitions. [2019-09-08 08:17:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-08 08:17:55,423 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:17:55,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:55,425 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:17:55,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:17:55,425 INFO L82 PathProgramCache]: Analyzing trace with hash 46803838, now seen corresponding path program 1 times [2019-09-08 08:17:55,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:17:55,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:17:55,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:17:55,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:17:55,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:17:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:17:55,775 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 08:17:55,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:17:55,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:17:55,784 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:17:55,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:17:55,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:17:55,786 INFO L87 Difference]: Start difference. First operand 1272 states and 2064 transitions. Second operand 6 states. [2019-09-08 08:17:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:17:58,410 INFO L93 Difference]: Finished difference Result 4310 states and 6980 transitions. [2019-09-08 08:17:58,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:17:58,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-09-08 08:17:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:17:58,441 INFO L225 Difference]: With dead ends: 4310 [2019-09-08 08:17:58,441 INFO L226 Difference]: Without dead ends: 3228 [2019-09-08 08:17:58,449 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:17:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2019-09-08 08:17:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3213. [2019-09-08 08:17:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2019-09-08 08:17:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5182 transitions. [2019-09-08 08:17:58,630 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5182 transitions. Word has length 136 [2019-09-08 08:17:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:17:58,632 INFO L475 AbstractCegarLoop]: Abstraction has 3213 states and 5182 transitions. [2019-09-08 08:17:58,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:17:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5182 transitions. [2019-09-08 08:17:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-08 08:17:58,636 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:17:58,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:58,636 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:17:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:17:58,637 INFO L82 PathProgramCache]: Analyzing trace with hash 73207465, now seen corresponding path program 1 times [2019-09-08 08:17:58,637 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:17:58,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:17:58,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:17:58,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:17:58,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:17:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:17:58,886 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 08:17:58,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:17:58,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:17:58,887 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:17:58,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:17:58,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:17:58,888 INFO L87 Difference]: Start difference. First operand 3213 states and 5182 transitions. Second operand 6 states. [2019-09-08 08:18:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:18:01,250 INFO L93 Difference]: Finished difference Result 11906 states and 19152 transitions. [2019-09-08 08:18:01,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:18:01,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2019-09-08 08:18:01,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:18:01,306 INFO L225 Difference]: With dead ends: 11906 [2019-09-08 08:18:01,306 INFO L226 Difference]: Without dead ends: 8883 [2019-09-08 08:18:01,317 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:18:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2019-09-08 08:18:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 8853. [2019-09-08 08:18:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8853 states. [2019-09-08 08:18:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 14186 transitions. [2019-09-08 08:18:01,681 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 14186 transitions. Word has length 137 [2019-09-08 08:18:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:18:01,681 INFO L475 AbstractCegarLoop]: Abstraction has 8853 states and 14186 transitions. [2019-09-08 08:18:01,681 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:18:01,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 14186 transitions. [2019-09-08 08:18:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-08 08:18:01,687 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:18:01,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:01,688 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:18:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:18:01,689 INFO L82 PathProgramCache]: Analyzing trace with hash 840034965, now seen corresponding path program 1 times [2019-09-08 08:18:01,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:18:01,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:18:01,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:18:01,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:18:01,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:18:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:18:01,893 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 08:18:01,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:18:01,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:18:01,895 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:18:01,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:18:01,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:18:01,896 INFO L87 Difference]: Start difference. First operand 8853 states and 14186 transitions. Second operand 6 states. [2019-09-08 08:18:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:18:04,795 INFO L93 Difference]: Finished difference Result 38691 states and 61866 transitions. [2019-09-08 08:18:04,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:18:04,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2019-09-08 08:18:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:18:04,964 INFO L225 Difference]: With dead ends: 38691 [2019-09-08 08:18:04,965 INFO L226 Difference]: Without dead ends: 30028 [2019-09-08 08:18:04,996 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:18:05,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30028 states. [2019-09-08 08:18:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30028 to 29940. [2019-09-08 08:18:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29940 states. [2019-09-08 08:18:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29940 states to 29940 states and 47736 transitions. [2019-09-08 08:18:06,806 INFO L78 Accepts]: Start accepts. Automaton has 29940 states and 47736 transitions. Word has length 138 [2019-09-08 08:18:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:18:06,807 INFO L475 AbstractCegarLoop]: Abstraction has 29940 states and 47736 transitions. [2019-09-08 08:18:06,807 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:18:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 29940 states and 47736 transitions. [2019-09-08 08:18:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-08 08:18:06,812 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:18:06,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:06,812 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:18:06,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:18:06,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1209801248, now seen corresponding path program 1 times [2019-09-08 08:18:06,813 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:18:06,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:18:06,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:18:06,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:18:06,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:18:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:18:06,995 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 08:18:06,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:18:06,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:18:06,996 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:18:06,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:18:06,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:18:06,997 INFO L87 Difference]: Start difference. First operand 29940 states and 47736 transitions. Second operand 6 states. [2019-09-08 08:18:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:18:10,247 INFO L93 Difference]: Finished difference Result 158489 states and 253535 transitions. [2019-09-08 08:18:10,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:18:10,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2019-09-08 08:18:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:18:10,756 INFO L225 Difference]: With dead ends: 158489 [2019-09-08 08:18:10,757 INFO L226 Difference]: Without dead ends: 128739 [2019-09-08 08:18:10,859 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-09-08 08:18:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128739 states. [2019-09-08 08:18:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128739 to 102306. [2019-09-08 08:18:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102306 states. [2019-09-08 08:18:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102306 states to 102306 states and 163562 transitions. [2019-09-08 08:18:15,547 INFO L78 Accepts]: Start accepts. Automaton has 102306 states and 163562 transitions. Word has length 139 [2019-09-08 08:18:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:18:15,548 INFO L475 AbstractCegarLoop]: Abstraction has 102306 states and 163562 transitions. [2019-09-08 08:18:15,548 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:18:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 102306 states and 163562 transitions. [2019-09-08 08:18:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-08 08:18:15,553 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:18:15,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:15,554 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:18:15,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:18:15,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2058852264, now seen corresponding path program 1 times [2019-09-08 08:18:15,554 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:18:15,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:18:15,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:18:15,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:18:15,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:18:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:18:15,661 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 08:18:15,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:18:15,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 08:18:15,662 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 08:18:15,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 08:18:15,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 08:18:15,663 INFO L87 Difference]: Start difference. First operand 102306 states and 163562 transitions. Second operand 4 states. [2019-09-08 08:18:21,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:18:21,758 INFO L93 Difference]: Finished difference Result 372645 states and 600005 transitions. [2019-09-08 08:18:21,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 08:18:21,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2019-09-08 08:18:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:18:22,728 INFO L225 Difference]: With dead ends: 372645 [2019-09-08 08:18:22,728 INFO L226 Difference]: Without dead ends: 270529 [2019-09-08 08:18:22,934 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 08:18:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270529 states. [2019-09-08 08:18:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270529 to 268521. [2019-09-08 08:18:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268521 states. [2019-09-08 08:18:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268521 states to 268521 states and 428076 transitions. [2019-09-08 08:18:36,415 INFO L78 Accepts]: Start accepts. Automaton has 268521 states and 428076 transitions. Word has length 141 [2019-09-08 08:18:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:18:36,415 INFO L475 AbstractCegarLoop]: Abstraction has 268521 states and 428076 transitions. [2019-09-08 08:18:36,416 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 08:18:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 268521 states and 428076 transitions. [2019-09-08 08:18:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-09-08 08:18:36,425 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:18:36,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:36,426 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:18:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:18:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash 285888988, now seen corresponding path program 1 times [2019-09-08 08:18:36,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:18:36,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:18:36,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:18:36,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:18:36,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:18:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:18:36,643 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 08:18:36,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:18:36,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 08:18:36,644 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 08:18:36,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 08:18:36,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-08 08:18:36,645 INFO L87 Difference]: Start difference. First operand 268521 states and 428076 transitions. Second operand 11 states. [2019-09-08 08:18:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:18:52,172 INFO L93 Difference]: Finished difference Result 462873 states and 738936 transitions. [2019-09-08 08:18:52,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-08 08:18:52,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2019-09-08 08:18:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:18:53,476 INFO L225 Difference]: With dead ends: 462873 [2019-09-08 08:18:53,476 INFO L226 Difference]: Without dead ends: 385379 [2019-09-08 08:18:53,653 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=607, Invalid=2473, Unknown=0, NotChecked=0, Total=3080 [2019-09-08 08:18:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385379 states. [2019-09-08 08:19:08,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385379 to 346429. [2019-09-08 08:19:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346429 states. [2019-09-08 08:19:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346429 states to 346429 states and 552200 transitions. [2019-09-08 08:19:09,473 INFO L78 Accepts]: Start accepts. Automaton has 346429 states and 552200 transitions. Word has length 142 [2019-09-08 08:19:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:19:09,474 INFO L475 AbstractCegarLoop]: Abstraction has 346429 states and 552200 transitions. [2019-09-08 08:19:09,474 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 08:19:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 346429 states and 552200 transitions. [2019-09-08 08:19:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-08 08:19:09,480 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:19:09,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:09,481 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:19:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:19:09,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1053402540, now seen corresponding path program 1 times [2019-09-08 08:19:09,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:19:09,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:19:09,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:19:09,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:19:09,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:19:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:19:09,721 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 08:19:09,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:19:09,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-09-08 08:19:09,722 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 08:19:09,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 08:19:09,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:19:09,723 INFO L87 Difference]: Start difference. First operand 346429 states and 552200 transitions. Second operand 12 states. [2019-09-08 08:19:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:19:37,489 INFO L93 Difference]: Finished difference Result 1087538 states and 1753968 transitions. [2019-09-08 08:19:37,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-08 08:19:37,489 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2019-09-08 08:19:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:19:39,867 INFO L225 Difference]: With dead ends: 1087538 [2019-09-08 08:19:39,868 INFO L226 Difference]: Without dead ends: 867055 [2019-09-08 08:19:40,277 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=771, Invalid=2651, Unknown=0, NotChecked=0, Total=3422 [2019-09-08 08:19:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867055 states. [2019-09-08 08:20:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867055 to 713904. [2019-09-08 08:20:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713904 states. [2019-09-08 08:20:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713904 states to 713904 states and 1152524 transitions. [2019-09-08 08:20:37,615 INFO L78 Accepts]: Start accepts. Automaton has 713904 states and 1152524 transitions. Word has length 143 [2019-09-08 08:20:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:20:37,615 INFO L475 AbstractCegarLoop]: Abstraction has 713904 states and 1152524 transitions. [2019-09-08 08:20:37,615 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 08:20:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 713904 states and 1152524 transitions. [2019-09-08 08:20:37,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-08 08:20:37,621 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:20:37,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:37,622 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:20:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:20:37,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2082761838, now seen corresponding path program 1 times [2019-09-08 08:20:37,622 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:20:37,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:20:37,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:20:37,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:20:37,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:20:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:20:37,777 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 08:20:37,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:20:37,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 08:20:37,778 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 08:20:37,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 08:20:37,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 08:20:37,781 INFO L87 Difference]: Start difference. First operand 713904 states and 1152524 transitions. Second operand 7 states. [2019-09-08 08:20:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:20:54,939 INFO L93 Difference]: Finished difference Result 1278627 states and 2067548 transitions. [2019-09-08 08:20:54,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:20:54,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-09-08 08:20:54,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:20:58,616 INFO L225 Difference]: With dead ends: 1278627 [2019-09-08 08:20:58,616 INFO L226 Difference]: Without dead ends: 698509 [2019-09-08 08:20:59,380 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:20:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698509 states. [2019-09-08 08:21:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698509 to 589641. [2019-09-08 08:21:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589641 states. [2019-09-08 08:21:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589641 states to 589641 states and 952468 transitions. [2019-09-08 08:21:42,081 INFO L78 Accepts]: Start accepts. Automaton has 589641 states and 952468 transitions. Word has length 143 [2019-09-08 08:21:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:21:42,082 INFO L475 AbstractCegarLoop]: Abstraction has 589641 states and 952468 transitions. [2019-09-08 08:21:42,082 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 08:21:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 589641 states and 952468 transitions. [2019-09-08 08:21:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-08 08:21:42,087 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:21:42,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:42,088 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:21:42,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:21:42,088 INFO L82 PathProgramCache]: Analyzing trace with hash -286420435, now seen corresponding path program 1 times [2019-09-08 08:21:42,088 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:21:42,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:21:42,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:21:42,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:21:42,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:21:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:21:42,326 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 08:21:42,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:21:42,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 08:21:42,327 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 08:21:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 08:21:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 08:21:42,328 INFO L87 Difference]: Start difference. First operand 589641 states and 952468 transitions. Second operand 5 states. [2019-09-08 08:22:05,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:22:05,197 INFO L93 Difference]: Finished difference Result 1363204 states and 2191497 transitions. [2019-09-08 08:22:05,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 08:22:05,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-09-08 08:22:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:22:07,188 INFO L225 Difference]: With dead ends: 1363204 [2019-09-08 08:22:07,188 INFO L226 Difference]: Without dead ends: 773994 [2019-09-08 08:22:09,162 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 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 08:22:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773994 states. [2019-09-08 08:22:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773994 to 730482. [2019-09-08 08:22:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730482 states. [2019-09-08 08:23:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730482 states to 730482 states and 1187947 transitions. [2019-09-08 08:23:00,095 INFO L78 Accepts]: Start accepts. Automaton has 730482 states and 1187947 transitions. Word has length 144 [2019-09-08 08:23:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:23:00,096 INFO L475 AbstractCegarLoop]: Abstraction has 730482 states and 1187947 transitions. [2019-09-08 08:23:00,096 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 08:23:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 730482 states and 1187947 transitions. [2019-09-08 08:23:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-09-08 08:23:00,102 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:23:00,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:00,103 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:23:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:23:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1038829530, now seen corresponding path program 1 times [2019-09-08 08:23:00,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:23:00,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:23:00,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:23:00,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:23:00,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:23:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:23:00,332 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 08:23:00,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:23:00,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 08:23:00,333 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 08:23:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 08:23:00,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-08 08:23:00,334 INFO L87 Difference]: Start difference. First operand 730482 states and 1187947 transitions. Second operand 11 states. [2019-09-08 08:23:35,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:23:35,584 INFO L93 Difference]: Finished difference Result 1403876 states and 2290168 transitions. [2019-09-08 08:23:35,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-09-08 08:23:35,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 145 [2019-09-08 08:23:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:23:39,296 INFO L225 Difference]: With dead ends: 1403876 [2019-09-08 08:23:39,297 INFO L226 Difference]: Without dead ends: 1119247 [2019-09-08 08:23:39,763 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=625, Invalid=2567, Unknown=0, NotChecked=0, Total=3192 [2019-09-08 08:23:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119247 states. [2019-09-08 08:24:38,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119247 to 1077875. [2019-09-08 08:24:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077875 states. [2019-09-08 08:24:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077875 states to 1077875 states and 1754281 transitions. [2019-09-08 08:24:42,486 INFO L78 Accepts]: Start accepts. Automaton has 1077875 states and 1754281 transitions. Word has length 145 [2019-09-08 08:24:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:24:42,487 INFO L475 AbstractCegarLoop]: Abstraction has 1077875 states and 1754281 transitions. [2019-09-08 08:24:42,487 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 08:24:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1077875 states and 1754281 transitions. [2019-09-08 08:24:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-09-08 08:24:42,491 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:24:42,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:42,492 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:24:42,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:24:42,492 INFO L82 PathProgramCache]: Analyzing trace with hash -898697865, now seen corresponding path program 1 times [2019-09-08 08:24:42,492 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:24:42,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:24:42,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:24:42,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:24:42,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:24:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:24:42,691 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 08:24:42,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:24:42,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 08:24:42,692 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 08:24:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 08:24:42,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 08:24:42,693 INFO L87 Difference]: Start difference. First operand 1077875 states and 1754281 transitions. Second operand 5 states. [2019-09-08 08:25:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:25:57,351 INFO L93 Difference]: Finished difference Result 3218720 states and 5290483 transitions. [2019-09-08 08:25:57,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 08:25:57,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-09-08 08:25:57,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:26:07,088 INFO L225 Difference]: With dead ends: 3218720 [2019-09-08 08:26:07,089 INFO L226 Difference]: Without dead ends: 2140861 [2019-09-08 08:26:08,713 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 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 08:26:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140861 states.