/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 --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:43:04,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:43:04,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:43:04,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:43:04,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:43:04,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:43:04,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:43:04,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:43:04,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:43:04,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:43:04,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:43:04,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:43:04,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:43:04,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:43:04,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:43:04,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:43:04,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:43:04,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:43:04,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:43:04,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:43:04,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:43:04,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:43:04,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:43:04,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:43:04,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:43:04,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:43:04,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:43:04,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:43:04,850 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 [2019-11-07 01:43:04,863 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:43:04,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:43:04,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:43:04,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:43:04,865 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:43:04,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:43:04,865 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:43:04,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:43:04,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:43:04,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:43:04,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:43:04,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:43:04,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:43:04,866 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:43:04,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:43:04,867 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:43:04,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:43:04,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:43:04,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:43:04,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:43:04,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:43:04,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:43:04,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:43:04,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:43:04,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:43:04,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:43:04,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:43:04,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:43:04,869 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 [2019-11-07 01:43:05,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:43:05,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:43:05,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:43:05,153 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:43:05,153 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:43:05,154 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label03.c [2019-11-07 01:43:05,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f93c7fc4/af85115f687b49f5a775b323ab2c8e93/FLAGdba9d09b4 [2019-11-07 01:43:05,985 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:43:05,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label03.c [2019-11-07 01:43:06,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f93c7fc4/af85115f687b49f5a775b323ab2c8e93/FLAGdba9d09b4 [2019-11-07 01:43:06,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f93c7fc4/af85115f687b49f5a775b323ab2c8e93 [2019-11-07 01:43:06,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:43:06,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:43:06,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:43:06,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:43:06,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:43:06,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:43:06" (1/1) ... [2019-11-07 01:43:06,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0d483e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:06, skipping insertion in model container [2019-11-07 01:43:06,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:43:06" (1/1) ... [2019-11-07 01:43:06,085 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:43:06,252 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:43:07,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:43:07,873 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:43:08,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:43:08,544 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:43:08,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08 WrapperNode [2019-11-07 01:43:08,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:43:08,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:43:08,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:43:08,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:43:08,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (1/1) ... [2019-11-07 01:43:08,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (1/1) ... [2019-11-07 01:43:08,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (1/1) ... [2019-11-07 01:43:08,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (1/1) ... [2019-11-07 01:43:08,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (1/1) ... [2019-11-07 01:43:08,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (1/1) ... [2019-11-07 01:43:08,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (1/1) ... [2019-11-07 01:43:08,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:43:08,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:43:08,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:43:08,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:43:08,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (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 [2019-11-07 01:43:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:43:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:43:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:43:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-07 01:43:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-07 01:43:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-07 01:43:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:43:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:43:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-07 01:43:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-07 01:43:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-07 01:43:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:43:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:43:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:43:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:43:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:43:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:43:13,972 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:43:13,972 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:43:13,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:43:13 BoogieIcfgContainer [2019-11-07 01:43:13,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:43:13,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:43:13,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:43:13,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:43:13,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:43:06" (1/3) ... [2019-11-07 01:43:13,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50472a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:43:13, skipping insertion in model container [2019-11-07 01:43:13,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:08" (2/3) ... [2019-11-07 01:43:13,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50472a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:43:13, skipping insertion in model container [2019-11-07 01:43:13,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:43:13" (3/3) ... [2019-11-07 01:43:13,985 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label03.c [2019-11-07 01:43:13,998 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:43:14,009 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:43:14,024 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:43:14,063 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:43:14,063 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:43:14,063 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:43:14,063 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:43:14,064 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:43:14,064 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:43:14,064 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:43:14,064 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:43:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-11-07 01:43:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-11-07 01:43:14,167 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:14,169 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] [2019-11-07 01:43:14,170 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:14,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:14,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1899133799, now seen corresponding path program 1 times [2019-11-07 01:43:14,187 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:14,187 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346568152] [2019-11-07 01:43:14,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:16,280 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346568152] [2019-11-07 01:43:16,281 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:43:16,281 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 01:43:16,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770822470] [2019-11-07 01:43:16,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:43:16,289 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:43:16,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:43:16,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:43:16,304 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 4 states. [2019-11-07 01:43:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:43:23,504 INFO L93 Difference]: Finished difference Result 3121 states and 6165 transitions. [2019-11-07 01:43:23,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:43:23,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 767 [2019-11-07 01:43:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:43:23,572 INFO L225 Difference]: With dead ends: 3121 [2019-11-07 01:43:23,572 INFO L226 Difference]: Without dead ends: 2329 [2019-11-07 01:43:23,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:43:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2019-11-07 01:43:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2019-11-07 01:43:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2329 states. [2019-11-07 01:43:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4495 transitions. [2019-11-07 01:43:23,850 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4495 transitions. Word has length 767 [2019-11-07 01:43:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:43:23,853 INFO L462 AbstractCegarLoop]: Abstraction has 2329 states and 4495 transitions. [2019-11-07 01:43:23,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:43:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4495 transitions. [2019-11-07 01:43:23,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2019-11-07 01:43:23,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:23,901 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] [2019-11-07 01:43:23,902 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:23,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:23,903 INFO L82 PathProgramCache]: Analyzing trace with hash 529902770, now seen corresponding path program 1 times [2019-11-07 01:43:23,903 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:23,904 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901902400] [2019-11-07 01:43:23,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:24,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901902400] [2019-11-07 01:43:24,637 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:43:24,637 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:43:24,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877909618] [2019-11-07 01:43:24,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:43:24,644 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:43:24,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:43:24,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:43:24,645 INFO L87 Difference]: Start difference. First operand 2329 states and 4495 transitions. Second operand 6 states. [2019-11-07 01:43:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:43:30,426 INFO L93 Difference]: Finished difference Result 5524 states and 10651 transitions. [2019-11-07 01:43:30,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 01:43:30,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2019-11-07 01:43:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:43:30,449 INFO L225 Difference]: With dead ends: 5524 [2019-11-07 01:43:30,449 INFO L226 Difference]: Without dead ends: 3200 [2019-11-07 01:43:30,455 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:43:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2019-11-07 01:43:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3154. [2019-11-07 01:43:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2019-11-07 01:43:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5488 transitions. [2019-11-07 01:43:30,555 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5488 transitions. Word has length 840 [2019-11-07 01:43:30,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:43:30,556 INFO L462 AbstractCegarLoop]: Abstraction has 3154 states and 5488 transitions. [2019-11-07 01:43:30,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:43:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5488 transitions. [2019-11-07 01:43:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2019-11-07 01:43:30,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:30,573 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 01:43:30,573 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1011401229, now seen corresponding path program 1 times [2019-11-07 01:43:30,574 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:30,575 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372817756] [2019-11-07 01:43:30,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 87 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:31,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372817756] [2019-11-07 01:43:31,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718239135] [2019-11-07 01:43:31,662 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 [2019-11-07 01:43:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:32,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:43:32,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:43:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:32,574 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:43:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:33,120 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [822809123] [2019-11-07 01:43:33,184 INFO L159 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-11-07 01:43:33,184 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:43:33,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:43:33,204 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:43:33,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:43:33,411 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs [2019-11-07 01:43:35,338 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 101 for LOIs