/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/pc_sfifo_2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:51:16,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:51:16,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:51:16,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:51:16,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:51:16,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:51:16,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:51:16,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:51:16,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:51:16,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:51:16,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:51:16,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:51:16,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:51:16,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:51:16,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:51:16,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:51:16,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:51:16,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:51:16,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:51:16,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:51:16,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:51:16,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:51:16,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:51:16,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:51:16,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:51:16,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:51:16,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:51:16,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:51:16,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:51:16,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:51:16,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:51:16,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:51:16,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:51:16,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:51:16,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:51:16,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:51:16,606 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 04:51:16,619 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:51:16,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:51:16,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:51:16,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:51:16,621 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:51:16,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:51:16,622 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:51:16,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:51:16,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:51:16,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:51:16,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:51:16,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:51:16,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:51:16,623 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:51:16,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:51:16,623 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:51:16,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:51:16,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:51:16,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:51:16,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:51:16,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:51:16,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:51:16,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:51:16,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:51:16,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:51:16,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:51:16,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:51:16,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:51:16,626 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 04:51:16,911 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:51:16,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:51:16,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:51:16,935 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:51:16,935 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:51:16,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c [2019-11-07 04:51:17,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c17e117/74832dd47a9349268f2cf138f53680b9/FLAG9764a8560 [2019-11-07 04:51:17,495 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:51:17,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c [2019-11-07 04:51:17,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c17e117/74832dd47a9349268f2cf138f53680b9/FLAG9764a8560 [2019-11-07 04:51:17,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c17e117/74832dd47a9349268f2cf138f53680b9 [2019-11-07 04:51:17,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:51:17,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:51:17,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:51:17,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:51:17,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:51:17,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:51:17" (1/1) ... [2019-11-07 04:51:17,889 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 04:51:17, skipping insertion in model container [2019-11-07 04:51:17,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:51:17" (1/1) ... [2019-11-07 04:51:17,897 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:51:17,950 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:51:18,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:51:18,159 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:51:18,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:51:18,306 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:51:18,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18 WrapperNode [2019-11-07 04:51:18,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:51:18,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:51:18,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:51:18,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:51:18,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (1/1) ... [2019-11-07 04:51:18,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (1/1) ... [2019-11-07 04:51:18,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (1/1) ... [2019-11-07 04:51:18,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (1/1) ... [2019-11-07 04:51:18,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (1/1) ... [2019-11-07 04:51:18,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (1/1) ... [2019-11-07 04:51:18,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (1/1) ... [2019-11-07 04:51:18,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:51:18,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:51:18,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:51:18,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:51:18,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (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 04:51:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:51:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:51:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-11-07 04:51:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2019-11-07 04:51:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-11-07 04:51:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-11-07 04:51:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-11-07 04:51:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-11-07 04:51:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-11-07 04:51:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-11-07 04:51:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-11-07 04:51:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-11-07 04:51:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-11-07 04:51:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-11-07 04:51:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-11-07 04:51:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-11-07 04:51:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-11-07 04:51:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-11-07 04:51:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-11-07 04:51:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:51:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:51:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:51:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-11-07 04:51:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2019-11-07 04:51:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-11-07 04:51:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-11-07 04:51:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-11-07 04:51:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-11-07 04:51:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-11-07 04:51:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-11-07 04:51:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-11-07 04:51:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-11-07 04:51:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-11-07 04:51:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-11-07 04:51:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-11-07 04:51:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-11-07 04:51:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-11-07 04:51:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-11-07 04:51:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-11-07 04:51:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:51:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:51:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:51:19,141 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:51:19,141 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 04:51:19,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:19 BoogieIcfgContainer [2019-11-07 04:51:19,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:51:19,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:51:19,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:51:19,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:51:19,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:51:17" (1/3) ... [2019-11-07 04:51:19,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149e228f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:51:19, skipping insertion in model container [2019-11-07 04:51:19,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:18" (2/3) ... [2019-11-07 04:51:19,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149e228f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:51:19, skipping insertion in model container [2019-11-07 04:51:19,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:19" (3/3) ... [2019-11-07 04:51:19,162 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1.c [2019-11-07 04:51:19,176 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:51:19,189 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:51:19,201 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:51:19,225 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:51:19,225 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:51:19,225 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:51:19,225 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:51:19,226 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:51:19,226 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:51:19,226 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:51:19,226 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:51:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2019-11-07 04:51:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 04:51:19,258 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:51:19,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:51:19,261 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:51:19,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:51:19,265 INFO L82 PathProgramCache]: Analyzing trace with hash -396785800, now seen corresponding path program 1 times [2019-11-07 04:51:19,275 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:51:19,276 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295789890] [2019-11-07 04:51:19,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:51:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:51:19,614 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 04:51:19,615 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295789890] [2019-11-07 04:51:19,615 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:51:19,616 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:51:19,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537128314] [2019-11-07 04:51:19,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:51:19,624 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:51:19,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:51:19,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:51:19,641 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states. [2019-11-07 04:51:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:51:19,939 INFO L93 Difference]: Finished difference Result 271 states and 362 transitions. [2019-11-07 04:51:19,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:51:19,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2019-11-07 04:51:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:51:19,956 INFO L225 Difference]: With dead ends: 271 [2019-11-07 04:51:19,957 INFO L226 Difference]: Without dead ends: 172 [2019-11-07 04:51:19,961 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:51:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-07 04:51:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 163. [2019-11-07 04:51:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-11-07 04:51:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2019-11-07 04:51:20,037 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 197 transitions. Word has length 60 [2019-11-07 04:51:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:51:20,037 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 197 transitions. [2019-11-07 04:51:20,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:51:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 197 transitions. [2019-11-07 04:51:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-07 04:51:20,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:51:20,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:51:20,042 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:51:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:51:20,043 INFO L82 PathProgramCache]: Analyzing trace with hash 640256483, now seen corresponding path program 1 times [2019-11-07 04:51:20,045 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:51:20,045 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641335714] [2019-11-07 04:51:20,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:51:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:51:20,341 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 04:51:20,342 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641335714] [2019-11-07 04:51:20,342 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:51:20,342 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:51:20,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674350682] [2019-11-07 04:51:20,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:51:20,345 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:51:20,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:51:20,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:51:20,346 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand 7 states. [2019-11-07 04:51:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:51:20,785 INFO L93 Difference]: Finished difference Result 606 states and 788 transitions. [2019-11-07 04:51:20,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:51:20,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-11-07 04:51:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:51:20,793 INFO L225 Difference]: With dead ends: 606 [2019-11-07 04:51:20,793 INFO L226 Difference]: Without dead ends: 460 [2019-11-07 04:51:20,796 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:51:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-11-07 04:51:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 434. [2019-11-07 04:51:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-11-07 04:51:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 548 transitions. [2019-11-07 04:51:20,915 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 548 transitions. Word has length 61 [2019-11-07 04:51:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:51:20,917 INFO L462 AbstractCegarLoop]: Abstraction has 434 states and 548 transitions. [2019-11-07 04:51:20,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:51:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 548 transitions. [2019-11-07 04:51:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-07 04:51:20,925 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:51:20,930 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, 1, 1, 1, 1, 1, 1, 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 04:51:20,930 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:51:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:51:20,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1370943992, now seen corresponding path program 1 times [2019-11-07 04:51:20,931 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:51:20,931 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038577970] [2019-11-07 04:51:20,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:51:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:51:21,104 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 04:51:21,105 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038577970] [2019-11-07 04:51:21,105 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:51:21,106 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:51:21,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799919725] [2019-11-07 04:51:21,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:51:21,109 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:51:21,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:51:21,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:51:21,111 INFO L87 Difference]: Start difference. First operand 434 states and 548 transitions. Second operand 5 states. [2019-11-07 04:51:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:51:21,654 INFO L93 Difference]: Finished difference Result 1467 states and 2064 transitions. [2019-11-07 04:51:21,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:51:21,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-11-07 04:51:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:51:21,665 INFO L225 Difference]: With dead ends: 1467 [2019-11-07 04:51:21,666 INFO L226 Difference]: Without dead ends: 1049 [2019-11-07 04:51:21,669 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:51:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-11-07 04:51:21,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1009. [2019-11-07 04:51:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-11-07 04:51:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1361 transitions. [2019-11-07 04:51:21,761 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1361 transitions. Word has length 70 [2019-11-07 04:51:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:51:21,761 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1361 transitions. [2019-11-07 04:51:21,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:51:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1361 transitions. [2019-11-07 04:51:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-07 04:51:21,764 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:51:21,764 INFO L410 BasicCegarLoop]: trace histogram [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 04:51:21,764 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:51:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:51:21,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1314740249, now seen corresponding path program 1 times [2019-11-07 04:51:21,765 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:51:21,765 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141361282] [2019-11-07 04:51:21,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:51:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:51:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:51:21,847 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141361282] [2019-11-07 04:51:21,847 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:51:21,847 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:51:21,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301380552] [2019-11-07 04:51:21,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:51:21,848 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:51:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:51:21,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:51:21,849 INFO L87 Difference]: Start difference. First operand 1009 states and 1361 transitions. Second operand 4 states. [2019-11-07 04:51:22,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:51:22,054 INFO L93 Difference]: Finished difference Result 1257 states and 1711 transitions. [2019-11-07 04:51:22,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:51:22,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2019-11-07 04:51:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:51:22,063 INFO L225 Difference]: With dead ends: 1257 [2019-11-07 04:51:22,063 INFO L226 Difference]: Without dead ends: 1254 [2019-11-07 04:51:22,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:51:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2019-11-07 04:51:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1209. [2019-11-07 04:51:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2019-11-07 04:51:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1638 transitions. [2019-11-07 04:51:22,161 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1638 transitions. Word has length 71 [2019-11-07 04:51:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:51:22,162 INFO L462 AbstractCegarLoop]: Abstraction has 1209 states and 1638 transitions. [2019-11-07 04:51:22,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:51:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1638 transitions. [2019-11-07 04:51:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-07 04:51:22,164 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:51:22,164 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:51:22,164 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:51:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:51:22,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2102562176, now seen corresponding path program 1 times [2019-11-07 04:51:22,165 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:51:22,165 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130478948] [2019-11-07 04:51:22,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:51:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:51:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:51:22,313 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130478948] [2019-11-07 04:51:22,313 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021349184] [2019-11-07 04:51:22,313 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 04:51:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:51:22,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-07 04:51:22,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:51:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:51:22,572 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:51:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:51:22,720 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [203612875] [2019-11-07 04:51:22,761 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2019-11-07 04:51:22,762 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:51:22,769 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:51:22,776 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:51:22,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:51:22,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 52 for LOIs [2019-11-07 04:51:22,975 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 76 for LOIs [2019-11-07 04:51:23,223 INFO L197 IcfgInterpreter]: Interpreting procedure init_model with input of size 56 for LOIs [2019-11-07 04:51:23,227 INFO L197 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 86 for LOIs [2019-11-07 04:51:25,010 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 64 for LOIs [2019-11-07 04:51:25,013 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 60 for LOIs [2019-11-07 04:51:25,017 INFO L197 IcfgInterpreter]: Interpreting procedure eval with input of size 65 for LOIs [2019-11-07 04:51:25,205 INFO L197 IcfgInterpreter]: Interpreting procedure do_read_c with input of size 53 for LOIs [2019-11-07 04:51:25,221 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 44 for LOIs [2019-11-07 04:51:25,223 INFO L197 IcfgInterpreter]: Interpreting procedure do_write_p with input of size 55 for LOIs [2019-11-07 04:51:25,372 INFO L197 IcfgInterpreter]: Interpreting procedure init_threads with input of size 60 for LOIs [2019-11-07 04:51:25,376 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 48 for LOIs [2019-11-07 04:51:25,379 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2019-11-07 04:51:25,380 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 50 for LOIs [2019-11-07 04:51:25,476 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 46 for LOIs [2019-11-07 04:51:25,484 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 46 for LOIs [2019-11-07 04:51:25,490 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:51:25,974 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2019-11-07 04:51:26,138 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-11-07 04:51:26,280 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-11-07 04:51:27,001 WARN L191 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 89 [2019-11-07 04:51:27,271 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-11-07 04:51:27,568 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-11-07 04:51:27,770 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-11-07 04:51:28,369 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2019-11-07 04:51:28,534 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2019-11-07 04:51:28,861 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2019-11-07 04:51:29,121 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-11-07 04:51:29,697 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2019-11-07 04:51:29,872 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-11-07 04:51:30,024 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-07 04:51:30,232 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-11-07 04:51:30,427 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-11-07 04:51:30,624 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-11-07 04:51:30,832 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2019-11-07 04:51:31,148 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-11-07 04:51:31,338 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-11-07 04:51:31,568 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-11-07 04:51:31,829 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2019-11-07 04:51:32,299 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2019-11-07 04:51:32,458 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-11-07 04:51:32,679 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-11-07 04:51:33,282 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2019-11-07 04:51:33,524 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-11-07 04:51:33,857 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-11-07 04:51:34,214 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-11-07 04:51:34,554 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-11-07 04:51:35,027 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-11-07 04:51:35,547 WARN L191 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-11-07 04:51:36,078 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-11-07 04:51:36,328 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-11-07 04:51:37,022 WARN L191 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2019-11-07 04:51:37,665 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2019-11-07 04:51:38,040 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-11-07 04:51:38,410 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-11-07 04:51:38,824 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-11-07 04:51:39,004 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-11-07 04:51:39,389 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2019-11-07 04:51:39,602 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-11-07 04:51:39,815 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-11-07 04:51:39,817 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:51:39,817 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6, 47] total 60 [2019-11-07 04:51:39,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048144883] [2019-11-07 04:51:39,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2019-11-07 04:51:39,821 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:51:39,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2019-11-07 04:51:39,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3150, Unknown=0, NotChecked=0, Total=3540 [2019-11-07 04:51:39,833 INFO L87 Difference]: Start difference. First operand 1209 states and 1638 transitions. Second operand 60 states. [2019-11-07 04:51:40,293 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-07 04:51:40,518 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-11-07 04:51:41,360 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2019-11-07 04:51:41,747 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2019-11-07 04:51:42,147 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2019-11-07 04:51:42,526 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2019-11-07 04:51:43,041 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2019-11-07 04:51:43,498 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2019-11-07 04:51:43,908 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2019-11-07 04:51:44,317 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2019-11-07 04:51:44,924 WARN L191 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2019-11-07 04:51:45,443 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 82 [2019-11-07 04:51:45,937 WARN L191 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2019-11-07 04:51:46,428 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2019-11-07 04:51:46,893 WARN L191 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2019-11-07 04:51:47,409 WARN L191 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 90 [2019-11-07 04:51:47,819 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-11-07 04:51:48,277 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2019-11-07 04:51:48,720 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-11-07 04:51:49,200 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2019-11-07 04:51:49,574 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2019-11-07 04:51:50,008 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-11-07 04:51:50,318 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-11-07 04:51:50,635 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-11-07 04:51:50,935 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-11-07 04:51:51,526 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-11-07 04:51:56,447 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 93