/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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:01:40,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:01:40,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:01:40,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:01:40,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:01:40,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:01:40,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:01:40,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:01:40,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:01:40,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:01:40,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:01:40,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:01:40,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:01:40,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:01:40,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:01:40,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:01:40,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:01:40,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:01:40,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:01:40,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:01:40,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:01:40,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:01:40,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:01:40,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:01:40,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:01:40,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:01:40,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:01:40,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:01:40,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:01:40,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:01:40,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:01:40,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:01:40,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:01:40,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:01:40,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:01:40,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:01:40,442 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 19:01:40,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:01:40,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:01:40,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:01:40,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:01:40,458 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:01:40,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:01:40,458 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:01:40,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:01:40,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:01:40,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:01:40,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:01:40,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:01:40,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:01:40,460 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:01:40,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:01:40,460 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:01:40,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:01:40,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:01:40,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:01:40,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:01:40,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:01:40,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:01:40,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:01:40,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:01:40,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:01:40,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:01:40,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:01:40,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:01:40,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:01:40,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:01:40,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:01:40,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:01:40,796 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:01:40,797 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:01:40,798 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label03.c [2019-11-06 19:01:40,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f776e4e/55acf4724f954c7b8601c6191750e662/FLAG91c44fc39 [2019-11-06 19:01:41,723 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:01:41,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label03.c [2019-11-06 19:01:41,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f776e4e/55acf4724f954c7b8601c6191750e662/FLAG91c44fc39 [2019-11-06 19:01:42,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f776e4e/55acf4724f954c7b8601c6191750e662 [2019-11-06 19:01:42,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:01:42,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:01:42,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:01:42,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:01:42,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:01:42,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:42" (1/1) ... [2019-11-06 19:01:42,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60edfb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:42, skipping insertion in model container [2019-11-06 19:01:42,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:42" (1/1) ... [2019-11-06 19:01:42,236 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:01:42,393 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:01:44,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:01:44,077 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:01:44,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:01:44,879 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:01:44,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44 WrapperNode [2019-11-06 19:01:44,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:01:44,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:01:44,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:01:44,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:01:44,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (1/1) ... [2019-11-06 19:01:44,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (1/1) ... [2019-11-06 19:01:44,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (1/1) ... [2019-11-06 19:01:44,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (1/1) ... [2019-11-06 19:01:45,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (1/1) ... [2019-11-06 19:01:45,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (1/1) ... [2019-11-06 19:01:45,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (1/1) ... [2019-11-06 19:01:45,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:01:45,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:01:45,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:01:45,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:01:45,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (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 19:01:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:01:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:01:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:01:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:01:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:01:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:01:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:01:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:01:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:01:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:01:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:01:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:01:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:01:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:01:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:01:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:01:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:01:49,984 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:01:49,985 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:01:49,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:49 BoogieIcfgContainer [2019-11-06 19:01:49,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:01:49,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:01:49,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:01:49,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:01:49,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:01:42" (1/3) ... [2019-11-06 19:01:49,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec7ff7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:49, skipping insertion in model container [2019-11-06 19:01:49,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:44" (2/3) ... [2019-11-06 19:01:49,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec7ff7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:49, skipping insertion in model container [2019-11-06 19:01:49,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:49" (3/3) ... [2019-11-06 19:01:49,998 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label03.c [2019-11-06 19:01:50,015 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:01:50,026 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:01:50,046 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:01:50,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:01:50,106 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:01:50,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:01:50,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:01:50,107 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:01:50,107 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:01:50,107 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:01:50,108 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:01:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 19:01:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2019-11-06 19:01:50,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:50,259 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, 1, 1] [2019-11-06 19:01:50,262 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:50,272 INFO L82 PathProgramCache]: Analyzing trace with hash 998699090, now seen corresponding path program 1 times [2019-11-06 19:01:50,283 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:50,283 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599646593] [2019-11-06 19:01:50,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:52,798 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 19:01:52,799 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599646593] [2019-11-06 19:01:52,800 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:52,800 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:01:52,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638076859] [2019-11-06 19:01:52,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:01:52,809 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:01:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:01:52,824 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2019-11-06 19:02:05,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:02:05,366 INFO L93 Difference]: Finished difference Result 3521 states and 6823 transitions. [2019-11-06 19:02:05,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:02:05,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 797 [2019-11-06 19:02:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:02:05,411 INFO L225 Difference]: With dead ends: 3521 [2019-11-06 19:02:05,411 INFO L226 Difference]: Without dead ends: 2547 [2019-11-06 19:02:05,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:02:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2019-11-06 19:02:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534. [2019-11-06 19:02:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2534 states. [2019-11-06 19:02:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4700 transitions. [2019-11-06 19:02:05,624 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4700 transitions. Word has length 797 [2019-11-06 19:02:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:02:05,628 INFO L462 AbstractCegarLoop]: Abstraction has 2534 states and 4700 transitions. [2019-11-06 19:02:05,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:02:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4700 transitions. [2019-11-06 19:02:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2019-11-06 19:02:05,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:02:05,666 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:02:05,666 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:02:05,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:02:05,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1028569331, now seen corresponding path program 1 times [2019-11-06 19:02:05,667 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:02:05,668 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982902421] [2019-11-06 19:02:05,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:02:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:02:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:02:06,675 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982902421] [2019-11-06 19:02:06,676 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:02:06,676 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:02:06,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452305711] [2019-11-06 19:02:06,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:02:06,681 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:02:06,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:02:06,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:02:06,682 INFO L87 Difference]: Start difference. First operand 2534 states and 4700 transitions. Second operand 9 states.