/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:43:24,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:43:24,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:43:24,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:43:24,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:43:24,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:43:24,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:43:24,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:43:24,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:43:24,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:43:24,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:43:24,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:43:24,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:43:24,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:43:24,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:43:24,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:43:24,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:43:24,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:43:24,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:43:24,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:43:24,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:43:24,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:43:24,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:43:24,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:43:24,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:43:24,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:43:24,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:43:24,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:43:24,993 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 01:43:25,015 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:43:25,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:43:25,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:43:25,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:43:25,017 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:43:25,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:43:25,017 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:43:25,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:43:25,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:43:25,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:43:25,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:43:25,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:43:25,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:43:25,018 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:43:25,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:43:25,019 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:43:25,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:43:25,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:43:25,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:43:25,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:43:25,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:43:25,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:43:25,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:43:25,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:43:25,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:43:25,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:43:25,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:43:25,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:43:25,021 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 01:43:25,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:43:25,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:43:25,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:43:25,367 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:43:25,367 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:43:25,368 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label21.c [2019-11-07 01:43:25,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b56df1a3/04594bbee7954117a317cf6cf970ca6a/FLAG187a003a6 [2019-11-07 01:43:26,222 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:43:26,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label21.c [2019-11-07 01:43:26,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b56df1a3/04594bbee7954117a317cf6cf970ca6a/FLAG187a003a6 [2019-11-07 01:43:26,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b56df1a3/04594bbee7954117a317cf6cf970ca6a [2019-11-07 01:43:26,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:43:26,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:43:26,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:43:26,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:43:26,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:43:26,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:43:26" (1/1) ... [2019-11-07 01:43:26,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1e9ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:26, skipping insertion in model container [2019-11-07 01:43:26,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:43:26" (1/1) ... [2019-11-07 01:43:26,903 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:43:27,178 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:43:28,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:43:28,652 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:43:29,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:43:29,348 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:43:29,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29 WrapperNode [2019-11-07 01:43:29,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:43:29,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:43:29,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:43:29,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:43:29,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (1/1) ... [2019-11-07 01:43:29,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (1/1) ... [2019-11-07 01:43:29,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (1/1) ... [2019-11-07 01:43:29,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (1/1) ... [2019-11-07 01:43:29,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (1/1) ... [2019-11-07 01:43:29,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (1/1) ... [2019-11-07 01:43:29,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (1/1) ... [2019-11-07 01:43:29,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:43:29,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:43:29,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:43:29,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:43:29,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (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 01:43:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:43:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:43:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:43:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-07 01:43:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-07 01:43:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-07 01:43:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:43:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:43:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-07 01:43:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-07 01:43:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-07 01:43:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:43:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:43:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:43:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:43:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:43:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:43:34,937 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:43:34,938 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:43:34,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:43:34 BoogieIcfgContainer [2019-11-07 01:43:34,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:43:34,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:43:34,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:43:34,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:43:34,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:43:26" (1/3) ... [2019-11-07 01:43:34,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e159c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:43:34, skipping insertion in model container [2019-11-07 01:43:34,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:29" (2/3) ... [2019-11-07 01:43:34,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e159c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:43:34, skipping insertion in model container [2019-11-07 01:43:34,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:43:34" (3/3) ... [2019-11-07 01:43:34,948 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label21.c [2019-11-07 01:43:34,958 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:43:34,967 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:43:34,979 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:43:35,055 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:43:35,056 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:43:35,056 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:43:35,056 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:43:35,056 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:43:35,056 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:43:35,056 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:43:35,057 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:43:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-11-07 01:43:35,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-11-07 01:43:35,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:35,142 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 01:43:35,144 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:35,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1899130983, now seen corresponding path program 1 times [2019-11-07 01:43:35,161 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:35,162 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95364022] [2019-11-07 01:43:35,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:37,189 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 01:43:37,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95364022] [2019-11-07 01:43:37,192 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:43:37,192 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 01:43:37,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913251256] [2019-11-07 01:43:37,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:43:37,230 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:43:37,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:43:37,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:43:37,251 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 4 states. [2019-11-07 01:43:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:43:44,711 INFO L93 Difference]: Finished difference Result 3121 states and 6165 transitions. [2019-11-07 01:43:44,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:43:44,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 767 [2019-11-07 01:43:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:43:44,776 INFO L225 Difference]: With dead ends: 3121 [2019-11-07 01:43:44,777 INFO L226 Difference]: Without dead ends: 2329 [2019-11-07 01:43:44,791 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 01:43:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2019-11-07 01:43:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2019-11-07 01:43:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2329 states. [2019-11-07 01:43:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4495 transitions. [2019-11-07 01:43:45,010 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4495 transitions. Word has length 767 [2019-11-07 01:43:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:43:45,014 INFO L462 AbstractCegarLoop]: Abstraction has 2329 states and 4495 transitions. [2019-11-07 01:43:45,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:43:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4495 transitions. [2019-11-07 01:43:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2019-11-07 01:43:45,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:45,059 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 01:43:45,060 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash 529905586, now seen corresponding path program 1 times [2019-11-07 01:43:45,061 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:45,062 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738757064] [2019-11-07 01:43:45,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:46,230 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 01:43:46,231 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738757064] [2019-11-07 01:43:46,232 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:43:46,232 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:43:46,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744942044] [2019-11-07 01:43:46,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:43:46,239 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:43:46,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:43:46,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:43:46,240 INFO L87 Difference]: Start difference. First operand 2329 states and 4495 transitions. Second operand 6 states. [2019-11-07 01:43:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:43:52,382 INFO L93 Difference]: Finished difference Result 5524 states and 10651 transitions. [2019-11-07 01:43:52,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 01:43:52,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2019-11-07 01:43:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:43:52,412 INFO L225 Difference]: With dead ends: 5524 [2019-11-07 01:43:52,412 INFO L226 Difference]: Without dead ends: 3200 [2019-11-07 01:43:52,425 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 01:43:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2019-11-07 01:43:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3154. [2019-11-07 01:43:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2019-11-07 01:43:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5488 transitions. [2019-11-07 01:43:52,608 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5488 transitions. Word has length 840 [2019-11-07 01:43:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:43:52,608 INFO L462 AbstractCegarLoop]: Abstraction has 3154 states and 5488 transitions. [2019-11-07 01:43:52,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:43:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5488 transitions. [2019-11-07 01:43:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2019-11-07 01:43:52,670 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:52,672 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 01:43:52,673 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:52,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1011404045, now seen corresponding path program 1 times [2019-11-07 01:43:52,675 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:52,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026003312] [2019-11-07 01:43:52,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:53,797 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 01:43:53,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026003312] [2019-11-07 01:43:53,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453760288] [2019-11-07 01:43:53,799 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 01:43:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:54,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:43:54,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:43:54,818 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 01:43:54,819 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:43:55,330 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 01:43:55,331 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2017455813] [2019-11-07 01:43:55,403 INFO L159 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-11-07 01:43:55,403 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:43:55,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:43:55,428 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:43:55,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:43:55,579 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs [2019-11-07 01:43:57,480 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 101 for LOIs