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_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 01:00:46,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 01:00:46,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 01:00:46,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 01:00:46,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 01:00:46,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 01:00:46,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 01:00:46,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 01:00:46,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 01:00:46,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 01:00:46,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 01:00:46,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 01:00:46,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 01:00:46,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 01:00:46,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 01:00:46,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 01:00:46,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 01:00:46,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 01:00:46,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 01:00:46,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 01:00:46,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 01:00:46,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 01:00:46,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 01:00:46,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 01:00:46,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 01:00:46,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 01:00:46,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 01:00:46,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 01:00:46,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 01:00:46,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 01:00:46,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 01:00:46,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 01:00:46,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 01:00:46,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 01:00:46,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 01:00:46,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 01:00:46,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 01:00:46,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 01:00:46,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 01:00:46,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 01:00:46,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 01:00:46,178 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 01:00:46,203 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 01:00:46,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 01:00:46,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 01:00:46,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 01:00:46,208 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 01:00:46,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 01:00:46,209 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 01:00:46,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 01:00:46,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 01:00:46,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 01:00:46,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 01:00:46,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 01:00:46,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 01:00:46,211 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 01:00:46,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 01:00:46,211 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 01:00:46,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 01:00:46,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 01:00:46,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 01:00:46,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 01:00:46,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 01:00:46,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 01:00:46,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 01:00:46,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 01:00:46,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 01:00:46,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 01:00:46,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 01:00:46,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 01:00:46,214 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 01:00:46,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 01:00:46,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 01:00:46,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 01:00:46,521 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 01:00:46,521 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 01:00:46,522 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label59.c [2019-10-07 01:00:46,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f098ef7/aa6a26ca2d3a4a2384eaf29ab86a45eb/FLAGf4d7dfd78 [2019-10-07 01:00:47,402 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 01:00:47,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label59.c [2019-10-07 01:00:47,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f098ef7/aa6a26ca2d3a4a2384eaf29ab86a45eb/FLAGf4d7dfd78 [2019-10-07 01:00:47,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f098ef7/aa6a26ca2d3a4a2384eaf29ab86a45eb [2019-10-07 01:00:47,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 01:00:47,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 01:00:47,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 01:00:47,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 01:00:47,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 01:00:47,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:00:47" (1/1) ... [2019-10-07 01:00:47,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f898099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:47, skipping insertion in model container [2019-10-07 01:00:47,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:00:47" (1/1) ... [2019-10-07 01:00:47,968 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 01:00:48,128 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 01:00:49,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 01:00:49,778 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 01:00:50,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 01:00:50,517 INFO L192 MainTranslator]: Completed translation [2019-10-07 01:00:50,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50 WrapperNode [2019-10-07 01:00:50,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 01:00:50,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 01:00:50,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 01:00:50,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 01:00:50,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (1/1) ... [2019-10-07 01:00:50,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (1/1) ... [2019-10-07 01:00:50,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (1/1) ... [2019-10-07 01:00:50,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (1/1) ... [2019-10-07 01:00:50,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (1/1) ... [2019-10-07 01:00:50,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (1/1) ... [2019-10-07 01:00:50,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (1/1) ... [2019-10-07 01:00:50,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 01:00:50,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 01:00:50,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 01:00:50,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 01:00:50,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (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 01:00:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 01:00:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 01:00:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 01:00:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 01:00:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 01:00:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 01:00:50,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 01:00:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 01:00:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 01:00:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 01:00:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 01:00:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 01:00:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 01:00:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 01:00:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 01:00:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 01:00:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 01:00:55,957 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 01:00:55,958 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 01:00:55,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:55 BoogieIcfgContainer [2019-10-07 01:00:55,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 01:00:55,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 01:00:55,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 01:00:55,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 01:00:55,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:00:47" (1/3) ... [2019-10-07 01:00:55,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553c06cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:55, skipping insertion in model container [2019-10-07 01:00:55,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:50" (2/3) ... [2019-10-07 01:00:55,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553c06cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:55, skipping insertion in model container [2019-10-07 01:00:55,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:55" (3/3) ... [2019-10-07 01:00:55,969 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label59.c [2019-10-07 01:00:55,979 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 01:00:55,988 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 01:00:56,000 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 01:00:56,034 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 01:00:56,035 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 01:00:56,035 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 01:00:56,035 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 01:00:56,035 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 01:00:56,035 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 01:00:56,036 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 01:00:56,036 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 01:00:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-07 01:00:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-07 01:00:56,128 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:56,130 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 01:00:56,132 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1899132519, now seen corresponding path program 1 times [2019-10-07 01:00:56,148 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:56,148 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:56,149 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:56,149 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:57,908 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 01:00:57,909 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:57,910 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:57,910 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 01:00:57,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:00:57,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:00:57,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:57,934 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-07 01:01:02,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:02,256 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-07 01:01:02,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:01:02,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-07 01:01:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:02,305 INFO L225 Difference]: With dead ends: 2343 [2019-10-07 01:01:02,305 INFO L226 Difference]: Without dead ends: 1555 [2019-10-07 01:01:02,315 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:01:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-07 01:01:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-07 01:01:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-07 01:01:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 3003 transitions. [2019-10-07 01:01:02,473 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 3003 transitions. Word has length 767 [2019-10-07 01:01:02,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:02,475 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 3003 transitions. [2019-10-07 01:01:02,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:01:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 3003 transitions. [2019-10-07 01:01:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2019-10-07 01:01:02,500 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:02,500 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 01:01:02,501 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:02,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:02,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1537903128, now seen corresponding path program 1 times [2019-10-07 01:01:02,502 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:02,502 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:02,502 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:02,503 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:03,785 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 01:01:03,786 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:03,786 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:01:03,786 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 01:01:03,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 01:01:03,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 01:01:03,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 01:01:03,790 INFO L87 Difference]: Start difference. First operand 1555 states and 3003 transitions. Second operand 4 states. [2019-10-07 01:01:10,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:10,300 INFO L93 Difference]: Finished difference Result 6201 states and 12123 transitions. [2019-10-07 01:01:10,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 01:01:10,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 775 [2019-10-07 01:01:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:10,332 INFO L225 Difference]: With dead ends: 6201 [2019-10-07 01:01:10,333 INFO L226 Difference]: Without dead ends: 4651 [2019-10-07 01:01:10,339 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 01:01:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2019-10-07 01:01:10,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 4651. [2019-10-07 01:01:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2019-10-07 01:01:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 7819 transitions. [2019-10-07 01:01:10,497 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 7819 transitions. Word has length 775 [2019-10-07 01:01:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:10,499 INFO L462 AbstractCegarLoop]: Abstraction has 4651 states and 7819 transitions. [2019-10-07 01:01:10,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 01:01:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 7819 transitions. [2019-10-07 01:01:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2019-10-07 01:01:10,562 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:10,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:10,564 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:10,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1233986684, now seen corresponding path program 1 times [2019-10-07 01:01:10,566 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:10,566 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:10,566 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:10,567 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:12,861 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:12,861 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:01:12,861 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 01:01:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:13,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 01:01:13,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:01:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:14,174 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:14,884 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 01:01:14,885 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-07 01:01:14,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:01:14,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:01:14,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-07 01:01:14,888 INFO L87 Difference]: Start difference. First operand 4651 states and 7819 transitions. Second operand 3 states. [2019-10-07 01:01:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:19,607 INFO L93 Difference]: Finished difference Result 13941 states and 23839 transitions. [2019-10-07 01:01:19,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:01:19,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 793 [2019-10-07 01:01:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:19,689 INFO L225 Difference]: With dead ends: 13941 [2019-10-07 01:01:19,689 INFO L226 Difference]: Without dead ends: 9295 [2019-10-07 01:01:19,703 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1586 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-07 01:01:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9295 states. [2019-10-07 01:01:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9295 to 9295. [2019-10-07 01:01:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9295 states. [2019-10-07 01:01:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 15121 transitions. [2019-10-07 01:01:19,997 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 15121 transitions. Word has length 793 [2019-10-07 01:01:19,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:20,000 INFO L462 AbstractCegarLoop]: Abstraction has 9295 states and 15121 transitions. [2019-10-07 01:01:20,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:01:20,000 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 15121 transitions. [2019-10-07 01:01:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2019-10-07 01:01:20,051 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:20,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:20,262 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:20,262 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:20,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:20,263 INFO L82 PathProgramCache]: Analyzing trace with hash 845903956, now seen corresponding path program 1 times [2019-10-07 01:01:20,264 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:20,264 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:20,264 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:20,265 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:21,179 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:21,179 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:01:21,180 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 01:01:21,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 01:01:21,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 01:01:21,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 01:01:21,183 INFO L87 Difference]: Start difference. First operand 9295 states and 15121 transitions. Second operand 6 states. [2019-10-07 01:01:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:27,482 INFO L93 Difference]: Finished difference Result 28297 states and 48159 transitions. [2019-10-07 01:01:27,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 01:01:27,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 817 [2019-10-07 01:01:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:27,604 INFO L225 Difference]: With dead ends: 28297 [2019-10-07 01:01:27,605 INFO L226 Difference]: Without dead ends: 19007 [2019-10-07 01:01:27,632 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 01:01:27,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19007 states. [2019-10-07 01:01:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19007 to 18935. [2019-10-07 01:01:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18935 states. [2019-10-07 01:01:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18935 states to 18935 states and 29724 transitions. [2019-10-07 01:01:28,199 INFO L78 Accepts]: Start accepts. Automaton has 18935 states and 29724 transitions. Word has length 817 [2019-10-07 01:01:28,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:28,200 INFO L462 AbstractCegarLoop]: Abstraction has 18935 states and 29724 transitions. [2019-10-07 01:01:28,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 01:01:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 18935 states and 29724 transitions. [2019-10-07 01:01:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2019-10-07 01:01:28,265 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:28,266 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:28,266 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:28,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:28,267 INFO L82 PathProgramCache]: Analyzing trace with hash 533647297, now seen corresponding path program 1 times [2019-10-07 01:01:28,267 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:28,267 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:28,268 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:28,268 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 75 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 01:01:29,883 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:29,883 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:01:29,884 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 01:01:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:30,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 01:01:30,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:01:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-07 01:01:30,717 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 75 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 01:01:31,184 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 01:01:31,184 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2019-10-07 01:01:31,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 01:01:31,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 01:01:31,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-07 01:01:31,186 INFO L87 Difference]: Start difference. First operand 18935 states and 29724 transitions. Second operand 5 states. [2019-10-07 01:01:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:37,546 INFO L93 Difference]: Finished difference Result 56930 states and 92967 transitions. [2019-10-07 01:01:37,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 01:01:37,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 848 [2019-10-07 01:01:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:37,707 INFO L225 Difference]: With dead ends: 56930 [2019-10-07 01:01:37,708 INFO L226 Difference]: Without dead ends: 38000 [2019-10-07 01:01:37,776 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1703 GetRequests, 1692 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-07 01:01:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38000 states. [2019-10-07 01:01:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38000 to 36343. [2019-10-07 01:01:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2019-10-07 01:01:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 52530 transitions. [2019-10-07 01:01:38,619 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 52530 transitions. Word has length 848 [2019-10-07 01:01:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:38,620 INFO L462 AbstractCegarLoop]: Abstraction has 36343 states and 52530 transitions. [2019-10-07 01:01:38,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 01:01:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 52530 transitions. [2019-10-07 01:01:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2019-10-07 01:01:38,725 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:38,726 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:38,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:38,939 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:38,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1392555815, now seen corresponding path program 1 times [2019-10-07 01:01:38,939 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:38,940 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:38,940 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:38,940 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 01:01:39,536 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:39,536 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:01:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:39,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 01:01:39,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:01:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-07 01:01:40,649 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 146 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 01:01:41,036 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 01:01:41,094 INFO L162 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-10-07 01:01:41,094 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 01:01:41,107 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 01:01:41,116 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 01:01:41,121 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 01:01:41,451 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs [2019-10-07 01:01:42,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:42,530 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 01:01:42,540 INFO L168 Benchmark]: Toolchain (without parser) took 54585.81 ms. Allocated memory was 138.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 89.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 266.2 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:42,542 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 01:01:42,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2567.42 ms. Allocated memory was 138.9 MB in the beginning and 253.2 MB in the end (delta: 114.3 MB). Free memory was 88.9 MB in the beginning and 177.3 MB in the end (delta: -88.4 MB). Peak memory consumption was 120.3 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:42,544 INFO L168 Benchmark]: Boogie Preprocessor took 263.05 ms. Allocated memory is still 253.2 MB. Free memory was 177.3 MB in the beginning and 147.6 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:42,545 INFO L168 Benchmark]: RCFGBuilder took 5179.12 ms. Allocated memory was 253.2 MB in the beginning and 386.4 MB in the end (delta: 133.2 MB). Free memory was 147.6 MB in the beginning and 268.5 MB in the end (delta: -120.9 MB). Peak memory consumption was 229.1 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:42,551 INFO L168 Benchmark]: TraceAbstraction took 46571.22 ms. Allocated memory was 386.4 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 268.5 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 197.9 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:42,564 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 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2567.42 ms. Allocated memory was 138.9 MB in the beginning and 253.2 MB in the end (delta: 114.3 MB). Free memory was 88.9 MB in the beginning and 177.3 MB in the end (delta: -88.4 MB). Peak memory consumption was 120.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 263.05 ms. Allocated memory is still 253.2 MB. Free memory was 177.3 MB in the beginning and 147.6 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5179.12 ms. Allocated memory was 253.2 MB in the beginning and 386.4 MB in the end (delta: 133.2 MB). Free memory was 147.6 MB in the beginning and 268.5 MB in the end (delta: -120.9 MB). Peak memory consumption was 229.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46571.22 ms. Allocated memory was 386.4 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 268.5 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 197.9 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...