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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:59:16,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:59:16,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:59:16,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:59:16,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:59:16,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:59:16,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:59:16,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:59:16,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:59:16,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:59:16,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:59:16,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:59:16,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:59:16,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:59:16,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:59:16,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:59:16,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:59:16,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:59:16,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:59:16,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:59:16,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:59:16,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:59:16,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:59:16,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:59:16,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:59:16,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 00:59:16,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 00:59:16,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 00:59:16,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 00:59:16,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 00:59:16,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 00:59:16,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 00:59:16,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 00:59:16,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:59:16,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:59:16,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:59:16,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 00:59:16,741 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:59:16,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:59:16,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:59:16,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:59:16,744 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:59:16,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:59:16,744 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:59:16,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:59:16,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:59:16,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:59:16,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:59:16,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:59:16,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:59:16,747 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:59:16,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:59:16,747 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:59:16,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:59:16,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:59:16,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:59:16,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:59:16,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:59:16,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:59:16,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:59:16,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:59:16,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:59:16,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:59:16,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:59:16,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:59:16,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:59:17,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:59:17,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:59:17,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:59:17,050 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:59:17,051 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:59:17,051 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label00.c [2019-10-07 00:59:17,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf7fb47f/630c3b6621eb43358c55deed6e5781d9/FLAG2ea0fc572 [2019-10-07 00:59:17,903 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:59:17,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label00.c [2019-10-07 00:59:17,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf7fb47f/630c3b6621eb43358c55deed6e5781d9/FLAG2ea0fc572 [2019-10-07 00:59:17,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf7fb47f/630c3b6621eb43358c55deed6e5781d9 [2019-10-07 00:59:18,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:59:18,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:59:18,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:59:18,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:59:18,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:59:18,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:59:17" (1/1) ... [2019-10-07 00:59:18,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d79651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:18, skipping insertion in model container [2019-10-07 00:59:18,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:59:17" (1/1) ... [2019-10-07 00:59:18,023 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:59:18,219 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:59:19,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:59:19,747 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:59:20,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:59:20,439 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:59:20,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20 WrapperNode [2019-10-07 00:59:20,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:59:20,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:59:20,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:59:20,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:59:20,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (1/1) ... [2019-10-07 00:59:20,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (1/1) ... [2019-10-07 00:59:20,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (1/1) ... [2019-10-07 00:59:20,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (1/1) ... [2019-10-07 00:59:20,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (1/1) ... [2019-10-07 00:59:20,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (1/1) ... [2019-10-07 00:59:20,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (1/1) ... [2019-10-07 00:59:20,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:59:20,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:59:20,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:59:20,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:59:20,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:59:20,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:59:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:59:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:59:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 00:59:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 00:59:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 00:59:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:59:20,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:59:20,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 00:59:20,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 00:59:20,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 00:59:20,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:59:20,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:59:20,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:59:20,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:59:20,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:59:20,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:59:26,344 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:59:26,344 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:59:26,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:59:26 BoogieIcfgContainer [2019-10-07 00:59:26,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:59:26,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:59:26,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:59:26,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:59:26,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:59:17" (1/3) ... [2019-10-07 00:59:26,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fac9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:59:26, skipping insertion in model container [2019-10-07 00:59:26,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:20" (2/3) ... [2019-10-07 00:59:26,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fac9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:59:26, skipping insertion in model container [2019-10-07 00:59:26,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:59:26" (3/3) ... [2019-10-07 00:59:26,365 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label00.c [2019-10-07 00:59:26,375 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:59:26,384 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:59:26,396 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:59:26,439 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:59:26,439 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:59:26,439 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:59:26,439 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:59:26,439 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:59:26,439 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:59:26,440 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:59:26,440 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:59:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-07 00:59:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-07 00:59:26,546 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:26,548 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:59:26,551 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1899129703, now seen corresponding path program 1 times [2019-10-07 00:59:26,568 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:26,568 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:26,572 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:26,572 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:59:28,433 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:28,433 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:59:28,434 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:59:28,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:59:28,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:59:28,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:59:28,457 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-07 00:59:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:59:32,859 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-07 00:59:32,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:59:32,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-07 00:59:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:59:32,908 INFO L225 Difference]: With dead ends: 2343 [2019-10-07 00:59:32,908 INFO L226 Difference]: Without dead ends: 1555 [2019-10-07 00:59:32,919 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:59:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-07 00:59:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-07 00:59:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-07 00:59:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2871 transitions. [2019-10-07 00:59:33,165 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2871 transitions. Word has length 767 [2019-10-07 00:59:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:59:33,174 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 2871 transitions. [2019-10-07 00:59:33,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:59:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2871 transitions. [2019-10-07 00:59:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2019-10-07 00:59:33,209 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:33,209 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:59:33,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:33,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:33,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1537900312, now seen corresponding path program 1 times [2019-10-07 00:59:33,212 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:33,212 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:33,213 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:33,213 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:59:35,032 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:35,033 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:59:35,033 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 00:59:35,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:59:35,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:59:35,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:59:35,038 INFO L87 Difference]: Start difference. First operand 1555 states and 2871 transitions. Second operand 4 states. [2019-10-07 00:59:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:59:41,568 INFO L93 Difference]: Finished difference Result 6201 states and 11595 transitions. [2019-10-07 00:59:41,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:59:41,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 775 [2019-10-07 00:59:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:59:41,601 INFO L225 Difference]: With dead ends: 6201 [2019-10-07 00:59:41,601 INFO L226 Difference]: Without dead ends: 4651 [2019-10-07 00:59:41,607 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:59:41,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2019-10-07 00:59:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 4651. [2019-10-07 00:59:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2019-10-07 00:59:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 8101 transitions. [2019-10-07 00:59:41,742 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 8101 transitions. Word has length 775 [2019-10-07 00:59:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:59:41,744 INFO L462 AbstractCegarLoop]: Abstraction has 4651 states and 8101 transitions. [2019-10-07 00:59:41,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:59:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 8101 transitions. [2019-10-07 00:59:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2019-10-07 00:59:41,768 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:41,769 INFO L385 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] [2019-10-07 00:59:41,769 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:41,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:41,771 INFO L82 PathProgramCache]: Analyzing trace with hash 529906866, now seen corresponding path program 1 times [2019-10-07 00:59:41,771 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:41,772 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:41,773 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:41,773 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:59:42,867 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:42,867 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:59:42,867 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:59:42,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:59:42,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:59:42,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:59:42,875 INFO L87 Difference]: Start difference. First operand 4651 states and 8101 transitions. Second operand 6 states. [2019-10-07 00:59:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:59:48,859 INFO L93 Difference]: Finished difference Result 11826 states and 20765 transitions. [2019-10-07 00:59:48,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:59:48,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2019-10-07 00:59:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:59:48,901 INFO L225 Difference]: With dead ends: 11826 [2019-10-07 00:59:48,901 INFO L226 Difference]: Without dead ends: 7180 [2019-10-07 00:59:48,911 INFO L606 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 [2019-10-07 00:59:48,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7180 states. [2019-10-07 00:59:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7180 to 7134. [2019-10-07 00:59:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7134 states. [2019-10-07 00:59:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7134 states to 7134 states and 11385 transitions. [2019-10-07 00:59:49,137 INFO L78 Accepts]: Start accepts. Automaton has 7134 states and 11385 transitions. Word has length 840 [2019-10-07 00:59:49,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:59:49,138 INFO L462 AbstractCegarLoop]: Abstraction has 7134 states and 11385 transitions. [2019-10-07 00:59:49,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:59:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7134 states and 11385 transitions. [2019-10-07 00:59:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2019-10-07 00:59:49,171 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:49,173 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:59:49,173 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:49,174 INFO L82 PathProgramCache]: Analyzing trace with hash 169793745, now seen corresponding path program 1 times [2019-10-07 00:59:49,174 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:49,174 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:49,175 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:49,175 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 88 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:59:50,055 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:50,056 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:59:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:59:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:50,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 00:59:50,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:59:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-07 00:59:51,083 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:59:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 88 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:59:51,622 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 00:59:51,622 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2019-10-07 00:59:51,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 00:59:51,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 00:59:51,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-07 00:59:51,625 INFO L87 Difference]: Start difference. First operand 7134 states and 11385 transitions. Second operand 5 states. [2019-10-07 00:59:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:59:57,534 INFO L93 Difference]: Finished difference Result 21788 states and 36301 transitions. [2019-10-07 00:59:57,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 00:59:57,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 861 [2019-10-07 00:59:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:59:57,619 INFO L225 Difference]: With dead ends: 21788 [2019-10-07 00:59:57,619 INFO L226 Difference]: Without dead ends: 14659 [2019-10-07 00:59:57,640 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1732 GetRequests, 1717 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-10-07 00:59:57,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14659 states. [2019-10-07 00:59:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14659 to 14561. [2019-10-07 00:59:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14561 states. [2019-10-07 00:59:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14561 states to 14561 states and 21618 transitions. [2019-10-07 00:59:58,062 INFO L78 Accepts]: Start accepts. Automaton has 14561 states and 21618 transitions. Word has length 861 [2019-10-07 00:59:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:59:58,063 INFO L462 AbstractCegarLoop]: Abstraction has 14561 states and 21618 transitions. [2019-10-07 00:59:58,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 00:59:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14561 states and 21618 transitions. [2019-10-07 00:59:58,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2019-10-07 00:59:58,119 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:58,120 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:59:58,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:59:58,333 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:58,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1812326073, now seen corresponding path program 1 times [2019-10-07 00:59:58,334 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:58,334 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:58,335 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:58,335 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 00:59:58,921 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:58,921 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:59:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:59:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:59,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:59:59,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:59:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-07 00:59:59,618 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:00:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 159 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 01:00:00,107 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 01:00:00,166 INFO L162 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-10-07 01:00:00,166 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 01:00:00,176 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 01:00:00,190 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 01:00:00,191 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 01:00:00,524 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 101 for LOIs [2019-10-07 01:00:01,371 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:00:01,372 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 01:00:01,379 INFO L168 Benchmark]: Toolchain (without parser) took 43375.93 ms. Allocated memory was 146.3 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 87.7 MB in the beginning and 812.7 MB in the end (delta: -725.0 MB). Peak memory consumption was 528.6 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:01,380 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 01:00:01,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2435.99 ms. Allocated memory was 146.3 MB in the beginning and 255.9 MB in the end (delta: 109.6 MB). Free memory was 87.3 MB in the beginning and 172.6 MB in the end (delta: -85.3 MB). Peak memory consumption was 111.3 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:01,382 INFO L168 Benchmark]: Boogie Preprocessor took 243.98 ms. Allocated memory is still 255.9 MB. Free memory was 172.6 MB in the beginning and 143.6 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:01,383 INFO L168 Benchmark]: RCFGBuilder took 5666.22 ms. Allocated memory was 255.9 MB in the beginning and 399.0 MB in the end (delta: 143.1 MB). Free memory was 143.6 MB in the beginning and 306.5 MB in the end (delta: -162.9 MB). Peak memory consumption was 239.2 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:01,384 INFO L168 Benchmark]: TraceAbstraction took 35023.65 ms. Allocated memory was 399.0 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 306.5 MB in the beginning and 812.7 MB in the end (delta: -506.2 MB). Peak memory consumption was 494.7 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:01,388 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2435.99 ms. Allocated memory was 146.3 MB in the beginning and 255.9 MB in the end (delta: 109.6 MB). Free memory was 87.3 MB in the beginning and 172.6 MB in the end (delta: -85.3 MB). Peak memory consumption was 111.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 243.98 ms. Allocated memory is still 255.9 MB. Free memory was 172.6 MB in the beginning and 143.6 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5666.22 ms. Allocated memory was 255.9 MB in the beginning and 399.0 MB in the end (delta: 143.1 MB). Free memory was 143.6 MB in the beginning and 306.5 MB in the end (delta: -162.9 MB). Peak memory consumption was 239.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35023.65 ms. Allocated memory was 399.0 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 306.5 MB in the beginning and 812.7 MB in the end (delta: -506.2 MB). Peak memory consumption was 494.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...