/usr/bin/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:01:59,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:01:59,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:01:59,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:01:59,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:01:59,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:01:59,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:01:59,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:01:59,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:01:59,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:01:59,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:01:59,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:01:59,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:01:59,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:01:59,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:01:59,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:01:59,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:01:59,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:01:59,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:01:59,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:01:59,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:01:59,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:01:59,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:01:59,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:01:59,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 19:01:59,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 19:01:59,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 19:01:59,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 19:01:59,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 19:01:59,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 19:01:59,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:01:59,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:01:59,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:01:59,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:01:59,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:01:59,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:01:59,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:01:59,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:01:59,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:01:59,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:01:59,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:01:59,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 19:01:59,194 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:01:59,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:01:59,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:01:59,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:01:59,198 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:01:59,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:01:59,198 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:01:59,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:01:59,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:01:59,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:01:59,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:01:59,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:01:59,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:01:59,200 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:01:59,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:01:59,201 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:01:59,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:01:59,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:01:59,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:01:59,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:01:59,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:01:59,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:01:59,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:01:59,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:01:59,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:01:59,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:01:59,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:01:59,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:01:59,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:01:59,480 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:01:59,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:01:59,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:01:59,508 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:01:59,508 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:01:59,509 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label05.c [2019-11-06 19:01:59,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c412b0c4/98ffade54f534a51b89c6dcbd2db413b/FLAGe11784156 [2019-11-06 19:02:00,371 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:02:00,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label05.c [2019-11-06 19:02:00,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c412b0c4/98ffade54f534a51b89c6dcbd2db413b/FLAGe11784156 [2019-11-06 19:02:00,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c412b0c4/98ffade54f534a51b89c6dcbd2db413b [2019-11-06 19:02:00,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:02:00,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:02:00,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:02:00,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:02:00,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:02:00,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:00" (1/1) ... [2019-11-06 19:02:00,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee7042c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:00, skipping insertion in model container [2019-11-06 19:02:00,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:00" (1/1) ... [2019-11-06 19:02:00,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:02:00,779 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:02:02,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:02:02,317 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:02:02,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:02:02,995 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:02:02,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02 WrapperNode [2019-11-06 19:02:02,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:02:02,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:02:02,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:02:02,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:02:03,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (1/1) ... [2019-11-06 19:02:03,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (1/1) ... [2019-11-06 19:02:03,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (1/1) ... [2019-11-06 19:02:03,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (1/1) ... [2019-11-06 19:02:03,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (1/1) ... [2019-11-06 19:02:03,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (1/1) ... [2019-11-06 19:02:03,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (1/1) ... [2019-11-06 19:02:03,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:02:03,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:02:03,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:02:03,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:02:03,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (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 [2019-11-06 19:02:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:02:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:02:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:02:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:02:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:02:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:02:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:02:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:02:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:02:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:02:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:02:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:02:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:02:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:02:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:02:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:02:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:02:07,834 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:02:07,834 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:02:07,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:02:07 BoogieIcfgContainer [2019-11-06 19:02:07,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:02:07,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:02:07,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:02:07,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:02:07,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:02:00" (1/3) ... [2019-11-06 19:02:07,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6a9bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:02:07, skipping insertion in model container [2019-11-06 19:02:07,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:02" (2/3) ... [2019-11-06 19:02:07,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6a9bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:02:07, skipping insertion in model container [2019-11-06 19:02:07,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:02:07" (3/3) ... [2019-11-06 19:02:07,854 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label05.c [2019-11-06 19:02:07,866 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:02:07,878 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:02:07,891 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:02:07,933 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:02:07,933 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:02:07,933 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:02:07,933 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:02:07,933 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:02:07,934 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:02:07,934 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:02:07,934 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:02:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 19:02:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2019-11-06 19:02:08,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:02:08,038 INFO L410 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] [2019-11-06 19:02:08,042 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:02:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:02:08,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1084993238, now seen corresponding path program 1 times [2019-11-06 19:02:08,057 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:02:08,058 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93959678] [2019-11-06 19:02:08,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:02:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:02:10,222 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93959678] [2019-11-06 19:02:10,223 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:02:10,224 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:02:10,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156920733] [2019-11-06 19:02:10,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:02:10,233 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:02:10,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:02:10,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:02:10,247 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2019-11-06 19:02:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:02:18,540 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2019-11-06 19:02:18,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 19:02:18,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 795 [2019-11-06 19:02:18,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:02:18,596 INFO L225 Difference]: With dead ends: 2672 [2019-11-06 19:02:18,597 INFO L226 Difference]: Without dead ends: 1702 [2019-11-06 19:02:18,609 INFO L630 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 [2019-11-06 19:02:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2019-11-06 19:02:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2019-11-06 19:02:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2019-11-06 19:02:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3135 transitions. [2019-11-06 19:02:18,789 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3135 transitions. Word has length 795 [2019-11-06 19:02:18,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:02:18,793 INFO L462 AbstractCegarLoop]: Abstraction has 1687 states and 3135 transitions. [2019-11-06 19:02:18,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:02:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3135 transitions. [2019-11-06 19:02:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2019-11-06 19:02:18,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:02:18,828 INFO L410 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] [2019-11-06 19:02:18,829 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:02:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:02:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash 959317371, now seen corresponding path program 1 times [2019-11-06 19:02:18,830 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:02:18,830 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120632790] [2019-11-06 19:02:18,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:02:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:02:20,282 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120632790] [2019-11-06 19:02:20,282 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842897874] [2019-11-06 19:02:20,282 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 [2019-11-06 19:02:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:20,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-06 19:02:20,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:02:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:02:21,454 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:02:21,454 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:02:21,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265873213] [2019-11-06 19:02:21,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:02:21,458 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:02:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:02:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:02:21,459 INFO L87 Difference]: Start difference. First operand 1687 states and 3135 transitions. Second operand 3 states. [2019-11-06 19:02:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:02:25,718 INFO L93 Difference]: Finished difference Result 5047 states and 9443 transitions. [2019-11-06 19:02:25,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:02:25,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 803 [2019-11-06 19:02:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:02:25,746 INFO L225 Difference]: With dead ends: 5047 [2019-11-06 19:02:25,746 INFO L226 Difference]: Without dead ends: 3366 [2019-11-06 19:02:25,750 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:02:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2019-11-06 19:02:25,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3366. [2019-11-06 19:02:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3366 states. [2019-11-06 19:02:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 5448 transitions. [2019-11-06 19:02:25,894 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 5448 transitions. Word has length 803 [2019-11-06 19:02:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:02:25,898 INFO L462 AbstractCegarLoop]: Abstraction has 3366 states and 5448 transitions. [2019-11-06 19:02:25,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:02:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 5448 transitions. [2019-11-06 19:02:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2019-11-06 19:02:25,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:02:25,921 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:02:26,127 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:02:26,127 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:02:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:02:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1026627193, now seen corresponding path program 1 times [2019-11-06 19:02:26,128 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:02:26,128 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684215264] [2019-11-06 19:02:26,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:02:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:02:28,090 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684215264] [2019-11-06 19:02:28,090 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156919958] [2019-11-06 19:02:28,090 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 [2019-11-06 19:02:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:28,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-06 19:02:28,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:02:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:02:28,913 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:02:28,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-11-06 19:02:28,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224848803] [2019-11-06 19:02:28,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:02:28,916 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:02:28,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:02:28,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:02:28,916 INFO L87 Difference]: Start difference. First operand 3366 states and 5448 transitions. Second operand 3 states. [2019-11-06 19:02:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:02:33,432 INFO L93 Difference]: Finished difference Result 8405 states and 14117 transitions. [2019-11-06 19:02:33,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:02:33,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 814 [2019-11-06 19:02:33,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:02:33,481 INFO L225 Difference]: With dead ends: 8405 [2019-11-06 19:02:33,481 INFO L226 Difference]: Without dead ends: 5045 [2019-11-06 19:02:33,491 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 819 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:02:33,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5045 states. [2019-11-06 19:02:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5045 to 5045. [2019-11-06 19:02:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5045 states. [2019-11-06 19:02:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5045 states to 5045 states and 7730 transitions. [2019-11-06 19:02:33,668 INFO L78 Accepts]: Start accepts. Automaton has 5045 states and 7730 transitions. Word has length 814 [2019-11-06 19:02:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:02:33,670 INFO L462 AbstractCegarLoop]: Abstraction has 5045 states and 7730 transitions. [2019-11-06 19:02:33,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:02:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5045 states and 7730 transitions. [2019-11-06 19:02:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2019-11-06 19:02:33,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:02:33,692 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:02:33,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:02:33,896 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:02:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:02:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash 888969439, now seen corresponding path program 1 times [2019-11-06 19:02:33,897 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:02:33,897 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864596377] [2019-11-06 19:02:33,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:02:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat