/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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:44:13,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:44:13,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:44:13,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:44:13,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:44:13,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:44:13,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:44:13,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:44:13,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:44:13,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:44:13,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:44:13,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:44:13,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:44:13,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:44:13,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:44:13,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:44:13,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:44:13,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:44:13,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:44:13,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:44:13,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:44:13,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:44:13,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:44:13,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:44:13,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:44:13,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 01:44:13,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 01:44:13,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 01:44:13,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 01:44:13,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 01:44:13,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 01:44:13,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 01:44:13,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 01:44:13,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:44:13,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:44:13,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:44:13,468 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 01:44:13,500 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:44:13,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:44:13,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:44:13,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:44:13,504 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:44:13,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:44:13,504 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:44:13,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:44:13,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:44:13,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:44:13,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:44:13,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:44:13,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:44:13,507 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:44:13,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:44:13,507 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:44:13,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:44:13,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:44:13,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:44:13,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:44:13,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:44:13,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:44:13,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:44:13,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:44:13,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:44:13,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:44:13,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:44:13,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:44:13,510 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 01:44:13,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:44:13,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:44:13,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:44:13,894 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:44:13,895 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:44:13,895 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label41.c [2019-11-07 01:44:13,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055d75f6a/a631381140934b2a91bb37ce3417522b/FLAG1ec4af961 [2019-11-07 01:44:14,735 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:44:14,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label41.c [2019-11-07 01:44:14,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055d75f6a/a631381140934b2a91bb37ce3417522b/FLAG1ec4af961 [2019-11-07 01:44:14,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055d75f6a/a631381140934b2a91bb37ce3417522b [2019-11-07 01:44:14,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:44:14,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:44:14,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:44:14,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:44:14,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:44:14,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:14" (1/1) ... [2019-11-07 01:44:14,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120a0594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:14, skipping insertion in model container [2019-11-07 01:44:14,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:14" (1/1) ... [2019-11-07 01:44:14,846 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:44:15,004 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:44:16,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:44:16,741 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:44:17,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:44:17,583 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:44:17,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17 WrapperNode [2019-11-07 01:44:17,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:44:17,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:44:17,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:44:17,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:44:17,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (1/1) ... [2019-11-07 01:44:17,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (1/1) ... [2019-11-07 01:44:17,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (1/1) ... [2019-11-07 01:44:17,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (1/1) ... [2019-11-07 01:44:17,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (1/1) ... [2019-11-07 01:44:17,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (1/1) ... [2019-11-07 01:44:17,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (1/1) ... [2019-11-07 01:44:17,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:44:17,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:44:17,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:44:17,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:44:17,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (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 01:44:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:44:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:44:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:44:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-07 01:44:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-07 01:44:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-07 01:44:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:44:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:44:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-07 01:44:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-07 01:44:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-07 01:44:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:44:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:44:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:44:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:44:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:44:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:44:23,881 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:44:23,881 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:44:23,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:23 BoogieIcfgContainer [2019-11-07 01:44:23,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:44:23,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:44:23,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:44:23,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:44:23,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:44:14" (1/3) ... [2019-11-07 01:44:23,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d41e372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:44:23, skipping insertion in model container [2019-11-07 01:44:23,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:17" (2/3) ... [2019-11-07 01:44:23,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d41e372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:44:23, skipping insertion in model container [2019-11-07 01:44:23,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:23" (3/3) ... [2019-11-07 01:44:23,894 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label41.c [2019-11-07 01:44:23,904 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:44:23,914 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:44:23,927 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:44:23,962 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:44:23,962 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:44:23,963 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:44:23,963 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:44:23,963 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:44:23,963 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:44:23,963 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:44:23,963 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:44:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-11-07 01:44:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-11-07 01:44:24,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:44:24,043 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 01:44:24,045 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:44:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:44:24,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1899127143, now seen corresponding path program 1 times [2019-11-07 01:44:24,063 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:44:24,063 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956376563] [2019-11-07 01:44:24,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:44:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:44:26,332 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 01:44:26,333 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956376563] [2019-11-07 01:44:26,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:44:26,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:44:26,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199247825] [2019-11-07 01:44:26,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:44:26,345 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:44:26,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:44:26,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:44:26,369 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-11-07 01:44:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:44:31,079 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-11-07 01:44:31,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:44:31,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-11-07 01:44:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:44:31,125 INFO L225 Difference]: With dead ends: 2343 [2019-11-07 01:44:31,125 INFO L226 Difference]: Without dead ends: 1555 [2019-11-07 01:44:31,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:44:31,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-11-07 01:44:31,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-11-07 01:44:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-11-07 01:44:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2847 transitions. [2019-11-07 01:44:31,306 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2847 transitions. Word has length 767 [2019-11-07 01:44:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:44:31,309 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 2847 transitions. [2019-11-07 01:44:31,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:44:31,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2847 transitions. [2019-11-07 01:44:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2019-11-07 01:44:31,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:44:31,334 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:44:31,334 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:44:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:44:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1340667238, now seen corresponding path program 1 times [2019-11-07 01:44:31,335 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:44:31,335 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765097797] [2019-11-07 01:44:31,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:44:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:44:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:44:32,192 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765097797] [2019-11-07 01:44:32,192 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:44:32,193 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:44:32,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188473141] [2019-11-07 01:44:32,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:44:32,196 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:44:32,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:44:32,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:44:32,197 INFO L87 Difference]: Start difference. First operand 1555 states and 2847 transitions. Second operand 6 states. [2019-11-07 01:44:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:44:39,269 INFO L93 Difference]: Finished difference Result 4764 states and 8788 transitions. [2019-11-07 01:44:39,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 01:44:39,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 782 [2019-11-07 01:44:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:44:39,302 INFO L225 Difference]: With dead ends: 4764 [2019-11-07 01:44:39,302 INFO L226 Difference]: Without dead ends: 3214 [2019-11-07 01:44:39,312 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 01:44:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2019-11-07 01:44:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 3154. [2019-11-07 01:44:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2019-11-07 01:44:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5656 transitions. [2019-11-07 01:44:39,497 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5656 transitions. Word has length 782 [2019-11-07 01:44:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:44:39,498 INFO L462 AbstractCegarLoop]: Abstraction has 3154 states and 5656 transitions. [2019-11-07 01:44:39,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:44:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5656 transitions. [2019-11-07 01:44:39,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2019-11-07 01:44:39,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:44:39,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:39,533 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:44:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:44:39,534 INFO L82 PathProgramCache]: Analyzing trace with hash 949893184, now seen corresponding path program 1 times [2019-11-07 01:44:39,534 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:44:39,535 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280350852] [2019-11-07 01:44:39,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:44:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:44:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:44:40,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280350852] [2019-11-07 01:44:40,492 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:44:40,492 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:44:40,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096734614] [2019-11-07 01:44:40,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:44:40,494 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:44:40,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:44:40,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:44:40,498 INFO L87 Difference]: Start difference. First operand 3154 states and 5656 transitions. Second operand 6 states. [2019-11-07 01:44:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:44:46,225 INFO L93 Difference]: Finished difference Result 8033 states and 14305 transitions. [2019-11-07 01:44:46,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 01:44:46,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 795 [2019-11-07 01:44:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:44:46,263 INFO L225 Difference]: With dead ends: 8033 [2019-11-07 01:44:46,263 INFO L226 Difference]: Without dead ends: 4884 [2019-11-07 01:44:46,272 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 01:44:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2019-11-07 01:44:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 4855. [2019-11-07 01:44:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4855 states. [2019-11-07 01:44:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7630 transitions. [2019-11-07 01:44:46,433 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7630 transitions. Word has length 795 [2019-11-07 01:44:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:44:46,434 INFO L462 AbstractCegarLoop]: Abstraction has 4855 states and 7630 transitions. [2019-11-07 01:44:46,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:44:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7630 transitions. [2019-11-07 01:44:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2019-11-07 01:44:46,455 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:44:46,456 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:44:46,456 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:44:46,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:44:46,457 INFO L82 PathProgramCache]: Analyzing trace with hash -599412095, now seen corresponding path program 1 times [2019-11-07 01:44:46,457 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:44:46,458 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652922973] [2019-11-07 01:44:46,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:44:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:44:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:44:47,179 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652922973] [2019-11-07 01:44:47,180 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146564984] [2019-11-07 01:44:47,180 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