java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 17:56:39,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 17:56:39,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 17:56:39,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 17:56:39,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 17:56:39,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 17:56:39,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 17:56:39,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 17:56:39,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 17:56:39,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 17:56:39,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 17:56:39,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 17:56:39,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 17:56:39,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 17:56:39,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 17:56:39,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 17:56:39,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 17:56:39,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 17:56:39,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 17:56:39,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 17:56:39,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 17:56:39,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 17:56:39,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 17:56:39,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 17:56:39,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 17:56:39,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 17:56:39,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 17:56:39,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 17:56:39,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 17:56:39,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 17:56:39,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 17:56:39,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 17:56:39,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 17:56:39,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 17:56:39,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 17:56:39,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 17:56:39,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 17:56:39,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 17:56:39,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 17:56:39,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 17:56:39,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 17:56:39,271 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 [2019-10-13 17:56:39,306 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 17:56:39,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 17:56:39,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 17:56:39,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 17:56:39,308 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 17:56:39,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 17:56:39,309 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 17:56:39,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 17:56:39,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 17:56:39,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 17:56:39,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 17:56:39,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 17:56:39,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 17:56:39,310 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 17:56:39,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 17:56:39,310 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 17:56:39,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 17:56:39,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 17:56:39,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 17:56:39,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 17:56:39,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 17:56:39,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 17:56:39,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 17:56:39,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 17:56:39,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 17:56:39,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 17:56:39,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 17:56:39,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 17:56:39,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 17:56:39,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 17:56:39,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 17:56:39,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 17:56:39,633 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 17:56:39,634 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 17:56:39,635 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label29.c [2019-10-13 17:56:39,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20342275a/25aae88776234be9bc6e19806c39c0a8/FLAGa98d2a718 [2019-10-13 17:56:40,556 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 17:56:40,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label29.c [2019-10-13 17:56:40,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20342275a/25aae88776234be9bc6e19806c39c0a8/FLAGa98d2a718 [2019-10-13 17:56:40,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20342275a/25aae88776234be9bc6e19806c39c0a8 [2019-10-13 17:56:40,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 17:56:40,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 17:56:40,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 17:56:40,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 17:56:40,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 17:56:40,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:56:40" (1/1) ... [2019-10-13 17:56:40,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517e93e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:40, skipping insertion in model container [2019-10-13 17:56:40,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:56:40" (1/1) ... [2019-10-13 17:56:40,686 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 17:56:40,876 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 17:56:42,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:56:42,367 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 17:56:43,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:56:43,062 INFO L192 MainTranslator]: Completed translation [2019-10-13 17:56:43,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43 WrapperNode [2019-10-13 17:56:43,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 17:56:43,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 17:56:43,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 17:56:43,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 17:56:43,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (1/1) ... [2019-10-13 17:56:43,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (1/1) ... [2019-10-13 17:56:43,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (1/1) ... [2019-10-13 17:56:43,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (1/1) ... [2019-10-13 17:56:43,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (1/1) ... [2019-10-13 17:56:43,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (1/1) ... [2019-10-13 17:56:43,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (1/1) ... [2019-10-13 17:56:43,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 17:56:43,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 17:56:43,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 17:56:43,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 17:56:43,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 17:56:43,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 17:56:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 17:56:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 17:56:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 17:56:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 17:56:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 17:56:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 17:56:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 17:56:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 17:56:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 17:56:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 17:56:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 17:56:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 17:56:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 17:56:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 17:56:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 17:56:43,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 17:56:48,114 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 17:56:48,115 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 17:56:48,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:56:48 BoogieIcfgContainer [2019-10-13 17:56:48,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 17:56:48,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 17:56:48,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 17:56:48,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 17:56:48,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:56:40" (1/3) ... [2019-10-13 17:56:48,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e191e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:56:48, skipping insertion in model container [2019-10-13 17:56:48,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:43" (2/3) ... [2019-10-13 17:56:48,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e191e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:56:48, skipping insertion in model container [2019-10-13 17:56:48,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:56:48" (3/3) ... [2019-10-13 17:56:48,130 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label29.c [2019-10-13 17:56:48,144 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 17:56:48,154 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 17:56:48,166 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 17:56:48,214 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 17:56:48,214 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 17:56:48,214 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 17:56:48,215 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 17:56:48,215 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 17:56:48,215 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 17:56:48,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 17:56:48,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 17:56:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-10-13 17:56:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2019-10-13 17:56:48,322 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:56:48,324 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:56:48,327 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:56:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:56:48,334 INFO L82 PathProgramCache]: Analyzing trace with hash 724952611, now seen corresponding path program 1 times [2019-10-13 17:56:48,343 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:56:48,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164983447] [2019-10-13 17:56:48,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:56:48,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:56:48,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:56:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:56:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:56:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:56:50,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164983447] [2019-10-13 17:56:50,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 17:56:50,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 17:56:50,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728928047] [2019-10-13 17:56:50,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 17:56:50,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:56:50,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 17:56:50,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 17:56:50,592 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2019-10-13 17:56:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:56:58,502 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2019-10-13 17:56:58,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 17:56:58,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 796 [2019-10-13 17:56:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:56:58,544 INFO L225 Difference]: With dead ends: 2672 [2019-10-13 17:56:58,544 INFO L226 Difference]: Without dead ends: 1702 [2019-10-13 17:56:58,558 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 17:56:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2019-10-13 17:56:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2019-10-13 17:56:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2019-10-13 17:56:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3135 transitions. [2019-10-13 17:56:58,739 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3135 transitions. Word has length 796 [2019-10-13 17:56:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:56:58,742 INFO L462 AbstractCegarLoop]: Abstraction has 1687 states and 3135 transitions. [2019-10-13 17:56:58,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 17:56:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3135 transitions. [2019-10-13 17:56:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2019-10-13 17:56:58,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:56:58,767 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:56:58,768 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:56:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:56:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash -325927950, now seen corresponding path program 1 times [2019-10-13 17:56:58,769 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:56:58,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178014185] [2019-10-13 17:56:58,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:56:58,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:56:58,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:56:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:56:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:56:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:57:00,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178014185] [2019-10-13 17:57:00,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538227822] [2019-10-13 17:57:00,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:57:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:00,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 17:57:00,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:57:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:57:01,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 17:57:01,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 17:57:01,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232649897] [2019-10-13 17:57:01,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 17:57:01,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:57:01,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 17:57:01,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 17:57:01,213 INFO L87 Difference]: Start difference. First operand 1687 states and 3135 transitions. Second operand 3 states. [2019-10-13 17:57:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:57:05,515 INFO L93 Difference]: Finished difference Result 5047 states and 9446 transitions. [2019-10-13 17:57:05,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 17:57:05,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 804 [2019-10-13 17:57:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:57:05,555 INFO L225 Difference]: With dead ends: 5047 [2019-10-13 17:57:05,555 INFO L226 Difference]: Without dead ends: 3366 [2019-10-13 17:57:05,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 811 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 17:57:05,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2019-10-13 17:57:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3366. [2019-10-13 17:57:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3366 states. [2019-10-13 17:57:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 5415 transitions. [2019-10-13 17:57:05,691 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 5415 transitions. Word has length 804 [2019-10-13 17:57:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:57:05,696 INFO L462 AbstractCegarLoop]: Abstraction has 3366 states and 5415 transitions. [2019-10-13 17:57:05,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 17:57:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 5415 transitions. [2019-10-13 17:57:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2019-10-13 17:57:05,723 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:57:05,725 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:57:05,933 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:57:05,933 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:57:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:57:05,934 INFO L82 PathProgramCache]: Analyzing trace with hash 628420722, now seen corresponding path program 1 times [2019-10-13 17:57:05,936 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:57:05,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819659151] [2019-10-13 17:57:05,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:05,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:57:05,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:57:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:07,003 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 17:57:07,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819659151] [2019-10-13 17:57:07,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468649793] [2019-10-13 17:57:07,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:57:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:57:07,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:57:07,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:57:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 17:57:07,889 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:57:07,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 17:57:07,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576607209] [2019-10-13 17:57:07,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 17:57:07,892 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:57:07,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 17:57:07,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 17:57:07,893 INFO L87 Difference]: Start difference. First operand 3366 states and 5415 transitions. Second operand 11 states.