/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/systemc/bist_cell.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:50:46,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:50:46,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:50:46,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:50:46,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:50:46,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:50:46,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:50:46,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:50:46,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:50:46,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:50:46,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:50:46,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:50:46,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:50:46,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:50:46,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:50:46,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:50:46,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:50:46,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:50:46,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:50:46,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:50:46,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:50:46,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:50:46,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:50:46,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:50:46,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:50:46,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:50:46,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:50:46,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:50:46,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:50:46,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:50:46,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:50:46,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:50:46,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:50:46,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:50:46,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:50:46,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:50:46,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:50:46,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:50:46,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:50:46,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:50:46,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:50:46,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:50:46,312 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:50:46,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:50:46,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:50:46,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:50:46,314 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:50:46,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:50:46,314 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:50:46,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:50:46,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:50:46,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:50:46,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:50:46,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:50:46,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:50:46,316 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:50:46,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:50:46,316 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:50:46,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:50:46,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:50:46,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:50:46,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:50:46,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:50:46,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:50:46,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:50:46,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:50:46,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:50:46,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:50:46,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:50:46,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:50:46,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:50:46,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:50:46,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:50:46,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:50:46,658 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:50:46,658 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:50:46,659 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/bist_cell.cil.c [2019-11-07 04:50:46,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07c80618/f68eac6ce610479196b49cb481097a9c/FLAGf5911ce79 [2019-11-07 04:50:47,224 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:50:47,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/bist_cell.cil.c [2019-11-07 04:50:47,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07c80618/f68eac6ce610479196b49cb481097a9c/FLAGf5911ce79 [2019-11-07 04:50:47,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07c80618/f68eac6ce610479196b49cb481097a9c [2019-11-07 04:50:47,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:50:47,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:50:47,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:50:47,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:50:47,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:50:47,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:50:47" (1/1) ... [2019-11-07 04:50:47,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630fa84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:47, skipping insertion in model container [2019-11-07 04:50:47,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:50:47" (1/1) ... [2019-11-07 04:50:47,641 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:50:47,721 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:50:47,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:50:47,952 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:50:48,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:50:48,125 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:50:48,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48 WrapperNode [2019-11-07 04:50:48,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:50:48,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:50:48,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:50:48,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:50:48,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (1/1) ... [2019-11-07 04:50:48,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (1/1) ... [2019-11-07 04:50:48,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (1/1) ... [2019-11-07 04:50:48,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (1/1) ... [2019-11-07 04:50:48,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (1/1) ... [2019-11-07 04:50:48,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (1/1) ... [2019-11-07 04:50:48,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (1/1) ... [2019-11-07 04:50:48,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:50:48,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:50:48,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:50:48,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:50:48,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:50:48,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:50:48,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:50:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-11-07 04:50:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure method1 [2019-11-07 04:50:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure is_method1_triggered [2019-11-07 04:50:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure update_b0 [2019-11-07 04:50:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure update_b1 [2019-11-07 04:50:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure update_d0 [2019-11-07 04:50:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure update_d1 [2019-11-07 04:50:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure update_z [2019-11-07 04:50:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-11-07 04:50:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-11-07 04:50:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-11-07 04:50:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-11-07 04:50:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-11-07 04:50:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-11-07 04:50:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-11-07 04:50:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-11-07 04:50:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-11-07 04:50:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-11-07 04:50:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:50:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:50:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:50:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-11-07 04:50:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure method1 [2019-11-07 04:50:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure is_method1_triggered [2019-11-07 04:50:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure update_b0 [2019-11-07 04:50:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure update_b1 [2019-11-07 04:50:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure update_d0 [2019-11-07 04:50:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure update_d1 [2019-11-07 04:50:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure update_z [2019-11-07 04:50:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-11-07 04:50:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-11-07 04:50:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-11-07 04:50:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-11-07 04:50:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-11-07 04:50:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-11-07 04:50:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-11-07 04:50:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-11-07 04:50:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-11-07 04:50:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-11-07 04:50:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:50:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:50:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:50:49,233 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:50:49,233 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-07 04:50:49,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:50:49 BoogieIcfgContainer [2019-11-07 04:50:49,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:50:49,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:50:49,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:50:49,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:50:49,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:50:47" (1/3) ... [2019-11-07 04:50:49,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea7c5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:50:49, skipping insertion in model container [2019-11-07 04:50:49,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:50:48" (2/3) ... [2019-11-07 04:50:49,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea7c5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:50:49, skipping insertion in model container [2019-11-07 04:50:49,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:50:49" (3/3) ... [2019-11-07 04:50:49,245 INFO L109 eAbstractionObserver]: Analyzing ICFG bist_cell.cil.c [2019-11-07 04:50:49,257 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:50:49,267 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:50:49,282 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:50:49,309 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:50:49,309 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:50:49,309 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:50:49,310 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:50:49,310 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:50:49,310 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:50:49,310 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:50:49,311 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:50:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2019-11-07 04:50:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-07 04:50:49,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:50:49,341 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:50:49,343 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:50:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:50:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash -889315788, now seen corresponding path program 1 times [2019-11-07 04:50:49,360 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:50:49,360 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864343104] [2019-11-07 04:50:49,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:50:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:50:49,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864343104] [2019-11-07 04:50:49,695 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:50:49,695 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:50:49,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945402205] [2019-11-07 04:50:49,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:50:49,703 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:50:49,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:50:49,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:50:49,715 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2019-11-07 04:50:49,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:50:49,747 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2019-11-07 04:50:49,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:50:49,750 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 40 [2019-11-07 04:50:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:50:49,765 INFO L225 Difference]: With dead ends: 160 [2019-11-07 04:50:49,766 INFO L226 Difference]: Without dead ends: 84 [2019-11-07 04:50:49,771 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:50:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-07 04:50:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-11-07 04:50:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-07 04:50:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2019-11-07 04:50:49,825 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 40 [2019-11-07 04:50:49,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:50:49,827 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2019-11-07 04:50:49,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:50:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2019-11-07 04:50:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-07 04:50:49,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:50:49,832 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:50:49,833 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:50:49,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:50:49,833 INFO L82 PathProgramCache]: Analyzing trace with hash 68965705, now seen corresponding path program 1 times [2019-11-07 04:50:49,833 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:50:49,834 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451263580] [2019-11-07 04:50:49,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:50:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:50:50,174 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451263580] [2019-11-07 04:50:50,174 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736727484] [2019-11-07 04:50:50,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:50:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:50:50,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:50:50,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:50:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:50:50,465 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:50:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:50:50,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [858342589] [2019-11-07 04:50:50,737 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2019-11-07 04:50:50,737 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:50:50,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:50:50,753 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:50:50,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:50:51,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 67 for LOIs [2019-11-07 04:50:51,038 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 114 for LOIs [2019-11-07 04:50:52,635 INFO L197 IcfgInterpreter]: Interpreting procedure init_model with input of size 94 for LOIs [2019-11-07 04:50:52,640 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 44 for LOIs [2019-11-07 04:50:52,643 INFO L197 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 106 for LOIs [2019-11-07 04:50:53,961 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 125 [2019-11-07 04:50:54,788 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 125 [2019-11-07 04:50:57,099 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 23 for LOIs [2019-11-07 04:50:57,154 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 102 for LOIs [2019-11-07 04:50:57,173 INFO L197 IcfgInterpreter]: Interpreting procedure eval with input of size 51 for LOIs [2019-11-07 04:50:57,247 INFO L197 IcfgInterpreter]: Interpreting procedure stop_simulation with input of size 40 for LOIs [2019-11-07 04:50:57,320 INFO L197 IcfgInterpreter]: Interpreting procedure init_threads with input of size 48 for LOIs [2019-11-07 04:50:57,331 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 55 for LOIs [2019-11-07 04:50:57,389 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 40 for LOIs [2019-11-07 04:50:57,391 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 23 for LOIs [2019-11-07 04:50:57,445 INFO L197 IcfgInterpreter]: Interpreting procedure is_method1_triggered with input of size 23 for LOIs [2019-11-07 04:50:57,446 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:50:58,327 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2019-11-07 04:50:58,683 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2019-11-07 04:50:59,006 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2019-11-07 04:50:59,966 WARN L191 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 107 [2019-11-07 04:51:00,398 WARN L191 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2019-11-07 04:51:00,882 WARN L191 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2019-11-07 04:51:01,426 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2019-11-07 04:51:01,684 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2019-11-07 04:51:02,190 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2019-11-07 04:51:02,657 WARN L191 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2019-11-07 04:51:03,545 WARN L191 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 73 [2019-11-07 04:51:03,945 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-11-07 04:51:04,638 WARN L191 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2019-11-07 04:51:05,237 WARN L191 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2019-11-07 04:51:05,997 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-11-07 04:51:06,395 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2019-11-07 04:51:06,674 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2019-11-07 04:51:07,137 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2019-11-07 04:51:07,580 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2019-11-07 04:51:08,270 WARN L191 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2019-11-07 04:51:08,741 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2019-11-07 04:51:09,429 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2019-11-07 04:51:09,900 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-11-07 04:51:10,196 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2019-11-07 04:51:11,233 WARN L191 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2019-11-07 04:51:12,282 WARN L191 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 78 [2019-11-07 04:51:13,081 WARN L191 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 75 [2019-11-07 04:51:13,654 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2019-11-07 04:51:14,269 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2019-11-07 04:51:14,272 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:51:14,272 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5, 41] total 54 [2019-11-07 04:51:14,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031260869] [2019-11-07 04:51:14,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-11-07 04:51:14,277 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:51:14,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-11-07 04:51:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2019-11-07 04:51:14,279 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand 54 states. [2019-11-07 04:51:14,738 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-11-07 04:51:14,999 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-11-07 04:51:16,769 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-07 04:51:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:51:20,935 INFO L93 Difference]: Finished difference Result 220 states and 277 transitions. [2019-11-07 04:51:20,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-07 04:51:20,939 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 82 [2019-11-07 04:51:20,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:51:20,945 INFO L225 Difference]: With dead ends: 220 [2019-11-07 04:51:20,945 INFO L226 Difference]: Without dead ends: 147 [2019-11-07 04:51:20,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 198 SyntacticMatches, 15 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=661, Invalid=5981, Unknown=0, NotChecked=0, Total=6642 [2019-11-07 04:51:20,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-07 04:51:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 107. [2019-11-07 04:51:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-07 04:51:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2019-11-07 04:51:21,003 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 82 [2019-11-07 04:51:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:51:21,003 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2019-11-07 04:51:21,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 54 states. [2019-11-07 04:51:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2019-11-07 04:51:21,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-07 04:51:21,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:51:21,014 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:51:21,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:51:21,225 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:51:21,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:51:21,225 INFO L82 PathProgramCache]: Analyzing trace with hash -874110999, now seen corresponding path program 1 times [2019-11-07 04:51:21,225 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:51:21,226 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387666168] [2019-11-07 04:51:21,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:51:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:51:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:51:21,604 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387666168] [2019-11-07 04:51:21,604 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658913870] [2019-11-07 04:51:21,604 INFO L94 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 [2019-11-07 04:51:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:51:21,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:51:21,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:51:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:51:21,917 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:51:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:51:22,095 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [15044670] [2019-11-07 04:51:22,104 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2019-11-07 04:51:22,104 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:51:22,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:51:22,105 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:51:22,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:51:22,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 67 for LOIs [2019-11-07 04:51:22,186 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 106 for LOIs [2019-11-07 04:51:23,000 INFO L197 IcfgInterpreter]: Interpreting procedure init_model with input of size 96 for LOIs [2019-11-07 04:51:23,004 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 26 for LOIs [2019-11-07 04:51:23,006 INFO L197 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 106 for LOIs