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_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 01:00:28,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 01:00:28,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 01:00:28,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 01:00:28,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 01:00:28,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 01:00:28,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 01:00:28,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 01:00:28,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 01:00:28,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 01:00:28,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 01:00:28,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 01:00:28,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 01:00:28,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 01:00:28,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 01:00:28,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 01:00:28,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 01:00:28,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 01:00:28,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 01:00:28,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 01:00:28,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 01:00:28,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 01:00:28,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 01:00:28,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 01:00:28,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 01:00:28,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 01:00:28,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 01:00:28,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 01:00:28,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 01:00:28,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 01:00:28,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 01:00:28,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 01:00:28,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 01:00:28,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 01:00:28,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 01:00:28,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 01:00:28,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 01:00:28,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 01:00:28,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 01:00:28,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 01:00:28,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 01:00:28,159 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 01:00:28,190 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 01:00:28,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 01:00:28,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 01:00:28,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 01:00:28,194 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 01:00:28,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 01:00:28,195 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 01:00:28,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 01:00:28,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 01:00:28,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 01:00:28,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 01:00:28,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 01:00:28,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 01:00:28,198 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 01:00:28,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 01:00:28,198 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 01:00:28,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 01:00:28,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 01:00:28,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 01:00:28,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 01:00:28,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 01:00:28,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 01:00:28,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 01:00:28,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 01:00:28,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 01:00:28,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 01:00:28,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 01:00:28,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 01:00:28,201 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 01:00:28,491 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 01:00:28,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 01:00:28,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 01:00:28,512 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 01:00:28,512 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 01:00:28,513 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label48.c [2019-10-07 01:00:28,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47639f1bd/f032e1d5756b4a3098e0c3536e7f98ad/FLAGaf7dd9bf3 [2019-10-07 01:00:29,471 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 01:00:29,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label48.c [2019-10-07 01:00:29,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47639f1bd/f032e1d5756b4a3098e0c3536e7f98ad/FLAGaf7dd9bf3 [2019-10-07 01:00:29,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47639f1bd/f032e1d5756b4a3098e0c3536e7f98ad [2019-10-07 01:00:29,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 01:00:29,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 01:00:29,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 01:00:29,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 01:00:29,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 01:00:29,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:00:29" (1/1) ... [2019-10-07 01:00:29,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6f65bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:29, skipping insertion in model container [2019-10-07 01:00:29,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:00:29" (1/1) ... [2019-10-07 01:00:29,945 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 01:00:30,114 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 01:00:31,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 01:00:31,598 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 01:00:32,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 01:00:32,370 INFO L192 MainTranslator]: Completed translation [2019-10-07 01:00:32,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32 WrapperNode [2019-10-07 01:00:32,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 01:00:32,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 01:00:32,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 01:00:32,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 01:00:32,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (1/1) ... [2019-10-07 01:00:32,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (1/1) ... [2019-10-07 01:00:32,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (1/1) ... [2019-10-07 01:00:32,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (1/1) ... [2019-10-07 01:00:32,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (1/1) ... [2019-10-07 01:00:32,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (1/1) ... [2019-10-07 01:00:32,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (1/1) ... [2019-10-07 01:00:32,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 01:00:32,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 01:00:32,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 01:00:32,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 01:00:32,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (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 01:00:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 01:00:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 01:00:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 01:00:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 01:00:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 01:00:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 01:00:32,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 01:00:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 01:00:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 01:00:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 01:00:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 01:00:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 01:00:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 01:00:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 01:00:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 01:00:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 01:00:32,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 01:00:38,211 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 01:00:38,211 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 01:00:38,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:38 BoogieIcfgContainer [2019-10-07 01:00:38,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 01:00:38,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 01:00:38,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 01:00:38,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 01:00:38,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:00:29" (1/3) ... [2019-10-07 01:00:38,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683e7351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:38, skipping insertion in model container [2019-10-07 01:00:38,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:32" (2/3) ... [2019-10-07 01:00:38,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683e7351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:38, skipping insertion in model container [2019-10-07 01:00:38,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:38" (3/3) ... [2019-10-07 01:00:38,221 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label48.c [2019-10-07 01:00:38,232 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 01:00:38,242 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 01:00:38,253 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 01:00:38,297 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 01:00:38,298 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 01:00:38,298 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 01:00:38,298 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 01:00:38,298 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 01:00:38,298 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 01:00:38,298 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 01:00:38,299 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 01:00:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-07 01:00:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-07 01:00:38,383 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:38,385 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 01:00:38,388 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:38,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:38,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1899128423, now seen corresponding path program 1 times [2019-10-07 01:00:38,405 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:38,405 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:38,406 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:38,406 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:40,362 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 01:00:40,363 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:40,363 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:40,364 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 01:00:40,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:00:40,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:00:40,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:40,386 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-07 01:00:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:45,059 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-07 01:00:45,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:00:45,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-07 01:00:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:45,100 INFO L225 Difference]: With dead ends: 2343 [2019-10-07 01:00:45,101 INFO L226 Difference]: Without dead ends: 1555 [2019-10-07 01:00:45,111 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 01:00:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-07 01:00:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-07 01:00:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-07 01:00:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2847 transitions. [2019-10-07 01:00:45,270 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2847 transitions. Word has length 767 [2019-10-07 01:00:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:45,273 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 2847 transitions. [2019-10-07 01:00:45,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:00:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2847 transitions. [2019-10-07 01:00:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2019-10-07 01:00:45,301 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:45,302 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:00:45,303 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1340665958, now seen corresponding path program 1 times [2019-10-07 01:00:45,304 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:45,304 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:45,304 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:45,304 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:45,814 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:45,814 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:45,814 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 01:00:45,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 01:00:45,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 01:00:45,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 01:00:45,818 INFO L87 Difference]: Start difference. First operand 1555 states and 2847 transitions. Second operand 6 states. [2019-10-07 01:00:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:52,120 INFO L93 Difference]: Finished difference Result 4764 states and 8788 transitions. [2019-10-07 01:00:52,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 01:00:52,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 782 [2019-10-07 01:00:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:52,144 INFO L225 Difference]: With dead ends: 4764 [2019-10-07 01:00:52,145 INFO L226 Difference]: Without dead ends: 3214 [2019-10-07 01:00:52,150 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 01:00:52,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2019-10-07 01:00:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 3154. [2019-10-07 01:00:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2019-10-07 01:00:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5656 transitions. [2019-10-07 01:00:52,278 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5656 transitions. Word has length 782 [2019-10-07 01:00:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:52,279 INFO L462 AbstractCegarLoop]: Abstraction has 3154 states and 5656 transitions. [2019-10-07 01:00:52,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 01:00:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5656 transitions. [2019-10-07 01:00:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2019-10-07 01:00:52,293 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:52,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:52,294 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:52,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:52,295 INFO L82 PathProgramCache]: Analyzing trace with hash 949891904, now seen corresponding path program 1 times [2019-10-07 01:00:52,295 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:52,296 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:52,296 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:52,296 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:53,199 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:53,200 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:53,200 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 01:00:53,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 01:00:53,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 01:00:53,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 01:00:53,212 INFO L87 Difference]: Start difference. First operand 3154 states and 5656 transitions. Second operand 6 states. [2019-10-07 01:00:58,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:58,817 INFO L93 Difference]: Finished difference Result 8033 states and 14305 transitions. [2019-10-07 01:00:58,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 01:00:58,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 795 [2019-10-07 01:00:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:58,846 INFO L225 Difference]: With dead ends: 8033 [2019-10-07 01:00:58,846 INFO L226 Difference]: Without dead ends: 4884 [2019-10-07 01:00:58,854 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 01:00:58,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2019-10-07 01:00:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 4855. [2019-10-07 01:00:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4855 states. [2019-10-07 01:00:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7630 transitions. [2019-10-07 01:00:59,016 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7630 transitions. Word has length 795 [2019-10-07 01:00:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:59,017 INFO L462 AbstractCegarLoop]: Abstraction has 4855 states and 7630 transitions. [2019-10-07 01:00:59,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 01:00:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7630 transitions. [2019-10-07 01:00:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2019-10-07 01:00:59,060 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:59,061 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:00:59,061 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:59,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:59,062 INFO L82 PathProgramCache]: Analyzing trace with hash -599413375, now seen corresponding path program 1 times [2019-10-07 01:00:59,062 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:59,063 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:59,063 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:59,063 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:59,862 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:59,862 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:00:59,863 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 01:01:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:00,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 01:01:00,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:01:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 01:01:01,047 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 01:01:01,660 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 01:01:01,660 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-07 01:01:01,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:01:01,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:01:01,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 01:01:01,664 INFO L87 Difference]: Start difference. First operand 4855 states and 7630 transitions. Second operand 3 states. [2019-10-07 01:01:06,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:06,097 INFO L93 Difference]: Finished difference Result 14481 states and 23385 transitions. [2019-10-07 01:01:06,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:01:06,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 801 [2019-10-07 01:01:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:06,157 INFO L225 Difference]: With dead ends: 14481 [2019-10-07 01:01:06,158 INFO L226 Difference]: Without dead ends: 9631 [2019-10-07 01:01:06,173 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1607 GetRequests, 1597 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 01:01:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2019-10-07 01:01:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 9631. [2019-10-07 01:01:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9631 states. [2019-10-07 01:01:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9631 states to 9631 states and 14940 transitions. [2019-10-07 01:01:06,476 INFO L78 Accepts]: Start accepts. Automaton has 9631 states and 14940 transitions. Word has length 801 [2019-10-07 01:01:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:06,480 INFO L462 AbstractCegarLoop]: Abstraction has 9631 states and 14940 transitions. [2019-10-07 01:01:06,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:01:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 9631 states and 14940 transitions. [2019-10-07 01:01:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2019-10-07 01:01:06,522 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:06,522 INFO L385 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, 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] [2019-10-07 01:01:06,727 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:06,728 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:06,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1680718633, now seen corresponding path program 1 times [2019-10-07 01:01:06,729 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:06,730 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:06,731 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:06,731 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:07,728 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:07,728 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:01:07,729 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 01:01:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:08,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 01:01:08,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:01:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 01:01:08,563 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 01:01:09,173 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 01:01:09,173 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-07 01:01:09,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:01:09,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:01:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 01:01:09,178 INFO L87 Difference]: Start difference. First operand 9631 states and 14940 transitions. Second operand 3 states. [2019-10-07 01:01:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:13,629 INFO L93 Difference]: Finished difference Result 23999 states and 37684 transitions. [2019-10-07 01:01:13,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:01:13,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 860 [2019-10-07 01:01:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:13,709 INFO L225 Difference]: With dead ends: 23999 [2019-10-07 01:01:13,709 INFO L226 Difference]: Without dead ends: 14373 [2019-10-07 01:01:13,735 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1725 GetRequests, 1715 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 01:01:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2019-10-07 01:01:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 14373. [2019-10-07 01:01:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14373 states. [2019-10-07 01:01:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14373 states to 14373 states and 21455 transitions. [2019-10-07 01:01:14,051 INFO L78 Accepts]: Start accepts. Automaton has 14373 states and 21455 transitions. Word has length 860 [2019-10-07 01:01:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:14,053 INFO L462 AbstractCegarLoop]: Abstraction has 14373 states and 21455 transitions. [2019-10-07 01:01:14,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:01:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 14373 states and 21455 transitions. [2019-10-07 01:01:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2019-10-07 01:01:14,104 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:14,105 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, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 01:01:14,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:14,311 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:14,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:14,312 INFO L82 PathProgramCache]: Analyzing trace with hash 295868499, now seen corresponding path program 1 times [2019-10-07 01:01:14,312 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:14,312 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:14,312 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:14,315 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 129 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-07 01:01:15,423 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:15,423 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:01:15,423 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 01:01:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:15,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 01:01:15,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:01:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 01:01:16,135 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 151 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 01:01:16,470 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 01:01:16,523 INFO L162 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-10-07 01:01:16,523 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 01:01:16,534 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 01:01:16,542 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 01:01:16,543 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 01:01:16,864 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs [2019-10-07 01:01:17,689 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:17,689 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 01:01:17,696 INFO L168 Benchmark]: Toolchain (without parser) took 47768.16 ms. Allocated memory was 145.2 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 87.8 MB in the beginning and 102.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2019-10-07 01:01:17,700 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 01:01:17,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2444.38 ms. Allocated memory was 145.2 MB in the beginning and 258.5 MB in the end (delta: 113.2 MB). Free memory was 87.8 MB in the beginning and 195.3 MB in the end (delta: -107.5 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:17,702 INFO L168 Benchmark]: Boogie Preprocessor took 276.96 ms. Allocated memory is still 258.5 MB. Free memory was 195.3 MB in the beginning and 166.3 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:17,703 INFO L168 Benchmark]: RCFGBuilder took 5563.69 ms. Allocated memory was 258.5 MB in the beginning and 399.0 MB in the end (delta: 140.5 MB). Free memory was 166.3 MB in the beginning and 317.6 MB in the end (delta: -151.3 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:17,704 INFO L168 Benchmark]: TraceAbstraction took 39478.28 ms. Allocated memory was 399.0 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 317.6 MB in the beginning and 102.8 MB in the end (delta: 214.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2019-10-07 01:01:17,709 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2444.38 ms. Allocated memory was 145.2 MB in the beginning and 258.5 MB in the end (delta: 113.2 MB). Free memory was 87.8 MB in the beginning and 195.3 MB in the end (delta: -107.5 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 276.96 ms. Allocated memory is still 258.5 MB. Free memory was 195.3 MB in the beginning and 166.3 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5563.69 ms. Allocated memory was 258.5 MB in the beginning and 399.0 MB in the end (delta: 140.5 MB). Free memory was 166.3 MB in the beginning and 317.6 MB in the end (delta: -151.3 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39478.28 ms. Allocated memory was 399.0 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 317.6 MB in the beginning and 102.8 MB in the end (delta: 214.8 MB). Peak memory consumption was 1.5 GB. 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...