java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:42:12,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:42:12,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:42:12,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:42:12,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:42:12,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:42:12,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:42:12,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:42:12,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:42:12,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:42:12,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:42:12,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:42:12,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:42:12,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:42:12,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:42:12,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:42:12,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:42:12,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:42:12,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:42:12,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:42:12,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:42:12,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:42:12,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:42:12,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:42:12,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:42:12,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:42:12,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:42:12,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:42:12,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:42:12,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:42:12,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:42:12,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:42:12,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:42:12,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:42:12,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:42:12,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:42:12,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:42:12,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:42:12,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:42:12,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:42:12,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:42:12,985 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 [2019-10-13 21:42:13,006 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:42:13,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:42:13,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:42:13,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:42:13,008 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:42:13,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:42:13,009 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:42:13,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:42:13,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:42:13,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:42:13,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:42:13,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:42:13,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:42:13,011 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:42:13,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:42:13,011 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:42:13,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:42:13,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:42:13,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:42:13,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:42:13,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:42:13,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:42:13,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:42:13,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:42:13,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:42:13,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:42:13,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:42:13,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:42:13,014 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 [2019-10-13 21:42:13,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:42:13,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:42:13,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:42:13,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:42:13,309 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:42:13,310 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label21.c [2019-10-13 21:42:13,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41609eb55/d0e55769ea9c4e628eff21b3a5ba0210/FLAG657d2f93f [2019-10-13 21:42:14,078 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:42:14,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label21.c [2019-10-13 21:42:14,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41609eb55/d0e55769ea9c4e628eff21b3a5ba0210/FLAG657d2f93f [2019-10-13 21:42:14,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41609eb55/d0e55769ea9c4e628eff21b3a5ba0210 [2019-10-13 21:42:14,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:42:14,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:42:14,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:42:14,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:42:14,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:42:14,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:14" (1/1) ... [2019-10-13 21:42:14,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4924bc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:14, skipping insertion in model container [2019-10-13 21:42:14,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:14" (1/1) ... [2019-10-13 21:42:14,177 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:42:14,373 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:42:15,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:42:15,906 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:42:16,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:42:16,576 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:42:16,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16 WrapperNode [2019-10-13 21:42:16,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:42:16,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:42:16,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:42:16,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:42:16,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (1/1) ... [2019-10-13 21:42:16,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (1/1) ... [2019-10-13 21:42:16,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (1/1) ... [2019-10-13 21:42:16,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (1/1) ... [2019-10-13 21:42:16,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (1/1) ... [2019-10-13 21:42:16,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (1/1) ... [2019-10-13 21:42:16,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (1/1) ... [2019-10-13 21:42:16,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:42:16,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:42:16,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:42:16,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:42:16,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (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 [2019-10-13 21:42:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:42:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:42:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:42:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:42:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 21:42:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 21:42:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:42:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:42:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:42:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 21:42:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 21:42:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:42:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:42:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:42:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:42:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:42:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:42:21,887 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:42:21,887 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:42:21,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:21 BoogieIcfgContainer [2019-10-13 21:42:21,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:42:21,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:42:21,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:42:21,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:42:21,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:42:14" (1/3) ... [2019-10-13 21:42:21,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b0de3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:21, skipping insertion in model container [2019-10-13 21:42:21,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16" (2/3) ... [2019-10-13 21:42:21,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b0de3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:21, skipping insertion in model container [2019-10-13 21:42:21,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:21" (3/3) ... [2019-10-13 21:42:21,897 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label21.c [2019-10-13 21:42:21,907 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:42:21,915 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:42:21,926 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:42:21,956 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:42:21,957 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:42:21,957 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:42:21,957 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:42:21,957 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:42:21,957 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:42:21,957 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:42:21,958 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:42:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-13 21:42:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-13 21:42:22,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:22,050 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:42:22,052 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1899130983, now seen corresponding path program 1 times [2019-10-13 21:42:22,067 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:22,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156275809] [2019-10-13 21:42:22,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:22,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:22,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:24,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156275809] [2019-10-13 21:42:24,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:42:24,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:42:24,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091313065] [2019-10-13 21:42:24,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:42:24,068 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:42:24,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:42:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:42:24,080 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 4 states. [2019-10-13 21:42:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:42:31,013 INFO L93 Difference]: Finished difference Result 3121 states and 6165 transitions. [2019-10-13 21:42:31,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:42:31,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 767 [2019-10-13 21:42:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:42:31,080 INFO L225 Difference]: With dead ends: 3121 [2019-10-13 21:42:31,080 INFO L226 Difference]: Without dead ends: 2329 [2019-10-13 21:42:31,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:42:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2019-10-13 21:42:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2019-10-13 21:42:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2329 states. [2019-10-13 21:42:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4495 transitions. [2019-10-13 21:42:31,250 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4495 transitions. Word has length 767 [2019-10-13 21:42:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:42:31,254 INFO L462 AbstractCegarLoop]: Abstraction has 2329 states and 4495 transitions. [2019-10-13 21:42:31,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:42:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4495 transitions. [2019-10-13 21:42:31,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2019-10-13 21:42:31,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:31,291 INFO L380 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] [2019-10-13 21:42:31,291 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:31,292 INFO L82 PathProgramCache]: Analyzing trace with hash 529905586, now seen corresponding path program 1 times [2019-10-13 21:42:31,293 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:31,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272151693] [2019-10-13 21:42:31,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:31,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:31,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:32,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272151693] [2019-10-13 21:42:32,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:42:32,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:42:32,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726996147] [2019-10-13 21:42:32,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:42:32,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:42:32,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:42:32,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:42:32,181 INFO L87 Difference]: Start difference. First operand 2329 states and 4495 transitions. Second operand 6 states. [2019-10-13 21:42:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:42:37,628 INFO L93 Difference]: Finished difference Result 5524 states and 10651 transitions. [2019-10-13 21:42:37,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:42:37,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2019-10-13 21:42:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:42:37,648 INFO L225 Difference]: With dead ends: 5524 [2019-10-13 21:42:37,648 INFO L226 Difference]: Without dead ends: 3200 [2019-10-13 21:42:37,653 INFO L600 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 [2019-10-13 21:42:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2019-10-13 21:42:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3154. [2019-10-13 21:42:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2019-10-13 21:42:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5488 transitions. [2019-10-13 21:42:37,751 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5488 transitions. Word has length 840 [2019-10-13 21:42:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:42:37,752 INFO L462 AbstractCegarLoop]: Abstraction has 3154 states and 5488 transitions. [2019-10-13 21:42:37,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:42:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5488 transitions. [2019-10-13 21:42:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2019-10-13 21:42:37,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:37,772 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:42:37,772 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:37,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1011404045, now seen corresponding path program 1 times [2019-10-13 21:42:37,774 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:37,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332073105] [2019-10-13 21:42:37,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:37,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:37,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 87 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:38,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332073105] [2019-10-13 21:42:38,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044387824] [2019-10-13 21:42:38,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:42:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:39,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:42:39,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:42:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:39,649 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:42:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:40,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [747252309] [2019-10-13 21:42:40,294 INFO L162 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-10-13 21:42:40,294 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:42:40,303 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:42:40,312 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:42:40,313 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:42:40,610 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs [2019-10-13 21:42:41,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:42:41,590 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:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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:102) 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:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:42:41,596 INFO L168 Benchmark]: Toolchain (without parser) took 27438.34 ms. Allocated memory was 145.2 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 86.9 MB in the beginning and 811.1 MB in the end (delta: -724.2 MB). Peak memory consumption was 282.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:41,597 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 21:42:41,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2417.75 ms. Allocated memory was 145.2 MB in the beginning and 259.0 MB in the end (delta: 113.8 MB). Free memory was 86.7 MB in the beginning and 184.2 MB in the end (delta: -97.5 MB). Peak memory consumption was 113.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:41,599 INFO L168 Benchmark]: Boogie Preprocessor took 240.18 ms. Allocated memory is still 259.0 MB. Free memory was 184.2 MB in the beginning and 155.3 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:41,600 INFO L168 Benchmark]: RCFGBuilder took 5070.75 ms. Allocated memory was 259.0 MB in the beginning and 389.5 MB in the end (delta: 130.5 MB). Free memory was 155.3 MB in the beginning and 294.4 MB in the end (delta: -139.1 MB). Peak memory consumption was 218.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:41,605 INFO L168 Benchmark]: TraceAbstraction took 19702.71 ms. Allocated memory was 389.5 MB in the beginning and 1.2 GB in the end (delta: 762.3 MB). Free memory was 294.4 MB in the beginning and 811.1 MB in the end (delta: -516.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:41,612 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2417.75 ms. Allocated memory was 145.2 MB in the beginning and 259.0 MB in the end (delta: 113.8 MB). Free memory was 86.7 MB in the beginning and 184.2 MB in the end (delta: -97.5 MB). Peak memory consumption was 113.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 240.18 ms. Allocated memory is still 259.0 MB. Free memory was 184.2 MB in the beginning and 155.3 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5070.75 ms. Allocated memory was 259.0 MB in the beginning and 389.5 MB in the end (delta: 130.5 MB). Free memory was 155.3 MB in the beginning and 294.4 MB in the end (delta: -139.1 MB). Peak memory consumption was 218.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19702.71 ms. Allocated memory was 389.5 MB in the beginning and 1.2 GB in the end (delta: 762.3 MB). Free memory was 294.4 MB in the beginning and 811.1 MB in the end (delta: -516.7 MB). Peak memory consumption was 245.7 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:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...