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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:44:35,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:44:35,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:44:35,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:44:35,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:44:35,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:44:35,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:44:35,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:44:35,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:44:35,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:44:35,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:44:35,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:44:35,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:44:35,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:44:35,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:44:35,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:44:35,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:44:35,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:44:35,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:44:35,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:44:35,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:44:35,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:44:35,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:44:35,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:44:35,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:44:35,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:44:35,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:44:35,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:44:35,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:44:35,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:44:35,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:44:35,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:44:35,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:44:35,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:44:35,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:44:35,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:44:35,210 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 [2019-10-15 01:44:35,232 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:44:35,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:44:35,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:44:35,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:44:35,235 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:44:35,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:44:35,235 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:44:35,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:44:35,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:44:35,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:44:35,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:44:35,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:44:35,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:44:35,238 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:44:35,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:44:35,238 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:44:35,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:44:35,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:44:35,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:44:35,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:44:35,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:44:35,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:44:35,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:44:35,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:44:35,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:44:35,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:44:35,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:44:35,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:44:35,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:44:35,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:44:35,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:44:35,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:44:35,545 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:44:35,546 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:44:35,546 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label22.c [2019-10-15 01:44:35,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ee003e5/a22a088a61d04b6a87a7cfb86e08f4e3/FLAG2be81eed9 [2019-10-15 01:44:36,462 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:44:36,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label22.c [2019-10-15 01:44:36,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ee003e5/a22a088a61d04b6a87a7cfb86e08f4e3/FLAG2be81eed9 [2019-10-15 01:44:36,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ee003e5/a22a088a61d04b6a87a7cfb86e08f4e3 [2019-10-15 01:44:37,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:44:37,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:44:37,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:37,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:44:37,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:44:37,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:36" (1/1) ... [2019-10-15 01:44:37,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ba2c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:37, skipping insertion in model container [2019-10-15 01:44:37,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:36" (1/1) ... [2019-10-15 01:44:37,022 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:44:37,201 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:44:38,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:38,767 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:44:39,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:39,460 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:44:39,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39 WrapperNode [2019-10-15 01:44:39,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:39,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:44:39,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:44:39,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:44:39,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (1/1) ... [2019-10-15 01:44:39,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (1/1) ... [2019-10-15 01:44:39,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (1/1) ... [2019-10-15 01:44:39,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (1/1) ... [2019-10-15 01:44:39,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (1/1) ... [2019-10-15 01:44:39,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (1/1) ... [2019-10-15 01:44:39,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (1/1) ... [2019-10-15 01:44:39,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:44:39,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:44:39,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:44:39,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:44:39,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (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 [2019-10-15 01:44:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:44:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:44:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:44:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:44:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 01:44:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 01:44:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:44:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:44:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:44:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 01:44:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 01:44:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:44:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:44:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:44:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:44:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:44:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:44:45,087 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:44:45,088 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:44:45,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:45 BoogieIcfgContainer [2019-10-15 01:44:45,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:44:45,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:44:45,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:44:45,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:44:45,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:44:36" (1/3) ... [2019-10-15 01:44:45,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5436984e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:45, skipping insertion in model container [2019-10-15 01:44:45,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:39" (2/3) ... [2019-10-15 01:44:45,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5436984e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:45, skipping insertion in model container [2019-10-15 01:44:45,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:45" (3/3) ... [2019-10-15 01:44:45,108 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label22.c [2019-10-15 01:44:45,119 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:44:45,129 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:44:45,142 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:44:45,180 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:44:45,180 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:44:45,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:44:45,181 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:44:45,181 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:44:45,181 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:44:45,181 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:44:45,181 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:44:45,229 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-15 01:44:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-15 01:44:45,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:45,275 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] [2019-10-15 01:44:45,277 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1899126631, now seen corresponding path program 1 times [2019-10-15 01:44:45,293 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:45,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295398227] [2019-10-15 01:44:45,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:45,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:45,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:47,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295398227] [2019-10-15 01:44:47,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:47,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:44:47,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492732740] [2019-10-15 01:44:47,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:44:47,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:47,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:44:47,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:47,093 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-15 01:44:51,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:51,648 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-15 01:44:51,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:44:51,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-15 01:44:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:51,693 INFO L225 Difference]: With dead ends: 2343 [2019-10-15 01:44:51,693 INFO L226 Difference]: Without dead ends: 1555 [2019-10-15 01:44:51,704 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-15 01:44:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-15 01:44:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-15 01:44:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2895 transitions. [2019-10-15 01:44:51,883 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2895 transitions. Word has length 767 [2019-10-15 01:44:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:51,886 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 2895 transitions. [2019-10-15 01:44:51,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:44:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2895 transitions. [2019-10-15 01:44:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2019-10-15 01:44:51,929 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:51,930 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] [2019-10-15 01:44:51,931 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:51,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:51,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1537897240, now seen corresponding path program 1 times [2019-10-15 01:44:51,932 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:51,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40372972] [2019-10-15 01:44:51,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:51,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:51,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:53,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40372972] [2019-10-15 01:44:53,172 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:53,172 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:44:53,172 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108452681] [2019-10-15 01:44:53,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:44:53,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:53,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:44:53,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:44:53,177 INFO L87 Difference]: Start difference. First operand 1555 states and 2895 transitions. Second operand 5 states. [2019-10-15 01:45:01,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:45:01,806 INFO L93 Difference]: Finished difference Result 6201 states and 11685 transitions. [2019-10-15 01:45:01,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:45:01,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 775 [2019-10-15 01:45:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:45:01,840 INFO L225 Difference]: With dead ends: 6201 [2019-10-15 01:45:01,841 INFO L226 Difference]: Without dead ends: 4651 [2019-10-15 01:45:01,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:45:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2019-10-15 01:45:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 4651. [2019-10-15 01:45:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2019-10-15 01:45:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 7735 transitions. [2019-10-15 01:45:02,004 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 7735 transitions. Word has length 775 [2019-10-15 01:45:02,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:45:02,006 INFO L462 AbstractCegarLoop]: Abstraction has 4651 states and 7735 transitions. [2019-10-15 01:45:02,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:45:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 7735 transitions. [2019-10-15 01:45:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2019-10-15 01:45:02,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:45:02,044 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:45:02,045 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:45:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:45:02,046 INFO L82 PathProgramCache]: Analyzing trace with hash 747489693, now seen corresponding path program 1 times [2019-10-15 01:45:02,046 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:45:02,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033052078] [2019-10-15 01:45:02,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:02,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:02,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:45:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:45:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:45:02,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033052078] [2019-10-15 01:45:02,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948133204] [2019-10-15 01:45:02,909 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 [2019-10-15 01:45:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:45:03,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:45:03,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:45:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:45:03,824 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:45:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:45:04,341 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:45:04,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-15 01:45:04,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14921399] [2019-10-15 01:45:04,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:45:04,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:45:04,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:45:04,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:45:04,345 INFO L87 Difference]: Start difference. First operand 4651 states and 7735 transitions. Second operand 5 states.