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 0.1.24-13a467a-m [2019-10-15 03:31:39,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:31:39,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:31:39,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:31:39,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:31:39,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:31:39,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:31:39,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:31:39,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:31:39,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:31:39,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:31:39,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:31:39,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:31:39,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:31:39,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:31:39,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:31:39,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:31:39,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:31:39,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:31:39,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:31:39,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:31:39,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:31:39,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:31:39,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:31:39,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:31:39,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:31:39,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:31:39,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:31:39,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:31:39,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:31:39,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:31:39,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:31:39,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:31:39,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:31:39,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:31:39,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:31:39,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:31:39,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:31:39,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:31:39,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:31:39,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:31:39,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:31:39,601 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:31:39,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:31:39,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:31:39,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:31:39,603 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:31:39,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:31:39,604 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:31:39,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:31:39,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:31:39,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:31:39,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:31:39,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:31:39,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:31:39,606 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:31:39,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:31:39,607 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:31:39,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:31:39,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:31:39,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:31:39,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:31:39,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:31:39,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:31:39,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:31:39,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:31:39,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:31:39,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:31:39,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:31:39,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:31:39,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:31:39,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:31:39,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:31:39,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:31:39,913 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:31:39,913 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:31:39,914 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c [2019-10-15 03:31:39,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12acf9e1/0aa66f0b3fb74c3881441402d6873ac0/FLAG7c8b00742 [2019-10-15 03:31:40,430 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:31:40,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c [2019-10-15 03:31:40,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12acf9e1/0aa66f0b3fb74c3881441402d6873ac0/FLAG7c8b00742 [2019-10-15 03:31:40,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12acf9e1/0aa66f0b3fb74c3881441402d6873ac0 [2019-10-15 03:31:40,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:31:40,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:31:40,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:40,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:31:40,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:31:40,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:40" (1/1) ... [2019-10-15 03:31:40,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a972dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:40, skipping insertion in model container [2019-10-15 03:31:40,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:40" (1/1) ... [2019-10-15 03:31:40,821 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:31:40,875 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:31:41,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:41,088 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:31:41,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:41,238 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:31:41,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41 WrapperNode [2019-10-15 03:31:41,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:41,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:31:41,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:31:41,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:31:41,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (1/1) ... [2019-10-15 03:31:41,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (1/1) ... [2019-10-15 03:31:41,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (1/1) ... [2019-10-15 03:31:41,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (1/1) ... [2019-10-15 03:31:41,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (1/1) ... [2019-10-15 03:31:41,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (1/1) ... [2019-10-15 03:31:41,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (1/1) ... [2019-10-15 03:31:41,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:31:41,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:31:41,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:31:41,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:31:41,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:31:41,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:31:41,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:31:41,337 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-15 03:31:41,337 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2019-10-15 03:31:41,337 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-10-15 03:31:41,337 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-10-15 03:31:41,337 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-10-15 03:31:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-10-15 03:31:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-10-15 03:31:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-15 03:31:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-15 03:31:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-15 03:31:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-15 03:31:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-15 03:31:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-15 03:31:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-15 03:31:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-15 03:31:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-15 03:31:41,340 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-15 03:31:41,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:31:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:31:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:31:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-15 03:31:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2019-10-15 03:31:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-10-15 03:31:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-10-15 03:31:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-10-15 03:31:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-10-15 03:31:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-10-15 03:31:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-15 03:31:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-15 03:31:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-15 03:31:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-15 03:31:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-15 03:31:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-15 03:31:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-15 03:31:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-15 03:31:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-15 03:31:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-15 03:31:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:31:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:31:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:31:42,077 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:31:42,078 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 03:31:42,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:42 BoogieIcfgContainer [2019-10-15 03:31:42,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:31:42,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:31:42,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:31:42,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:31:42,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:31:40" (1/3) ... [2019-10-15 03:31:42,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e87a841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:42, skipping insertion in model container [2019-10-15 03:31:42,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:41" (2/3) ... [2019-10-15 03:31:42,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e87a841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:42, skipping insertion in model container [2019-10-15 03:31:42,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:42" (3/3) ... [2019-10-15 03:31:42,088 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1.c [2019-10-15 03:31:42,097 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:31:42,105 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:31:42,115 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:31:42,137 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:31:42,138 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:31:42,138 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:31:42,138 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:31:42,138 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:31:42,139 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:31:42,139 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:31:42,139 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:31:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2019-10-15 03:31:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-15 03:31:42,169 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:42,170 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:42,173 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:42,179 INFO L82 PathProgramCache]: Analyzing trace with hash -396785800, now seen corresponding path program 1 times [2019-10-15 03:31:42,188 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:42,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315493392] [2019-10-15 03:31:42,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:42,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:42,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:42,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315493392] [2019-10-15 03:31:42,509 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:42,510 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:31:42,510 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955423820] [2019-10-15 03:31:42,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:31:42,515 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:42,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:31:42,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:42,529 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states. [2019-10-15 03:31:42,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:42,874 INFO L93 Difference]: Finished difference Result 271 states and 362 transitions. [2019-10-15 03:31:42,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:31:42,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2019-10-15 03:31:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:42,894 INFO L225 Difference]: With dead ends: 271 [2019-10-15 03:31:42,895 INFO L226 Difference]: Without dead ends: 172 [2019-10-15 03:31:42,902 INFO L600 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 [2019-10-15 03:31:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-10-15 03:31:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 163. [2019-10-15 03:31:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-10-15 03:31:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2019-10-15 03:31:42,965 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 197 transitions. Word has length 60 [2019-10-15 03:31:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:42,966 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 197 transitions. [2019-10-15 03:31:42,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:31:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 197 transitions. [2019-10-15 03:31:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:31:42,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:42,970 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:42,970 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:42,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:42,971 INFO L82 PathProgramCache]: Analyzing trace with hash 640256483, now seen corresponding path program 1 times [2019-10-15 03:31:42,971 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:42,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777636865] [2019-10-15 03:31:42,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:42,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:42,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:43,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777636865] [2019-10-15 03:31:43,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:43,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:31:43,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111731377] [2019-10-15 03:31:43,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:31:43,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:43,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:31:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:31:43,243 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand 7 states. [2019-10-15 03:31:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:43,715 INFO L93 Difference]: Finished difference Result 606 states and 788 transitions. [2019-10-15 03:31:43,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:31:43,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:31:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:43,723 INFO L225 Difference]: With dead ends: 606 [2019-10-15 03:31:43,723 INFO L226 Difference]: Without dead ends: 460 [2019-10-15 03:31:43,727 INFO L600 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 [2019-10-15 03:31:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-10-15 03:31:43,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 434. [2019-10-15 03:31:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-10-15 03:31:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 548 transitions. [2019-10-15 03:31:43,832 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 548 transitions. Word has length 61 [2019-10-15 03:31:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:43,833 INFO L462 AbstractCegarLoop]: Abstraction has 434 states and 548 transitions. [2019-10-15 03:31:43,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:31:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 548 transitions. [2019-10-15 03:31:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-15 03:31:43,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:43,836 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:31:43,836 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1370943992, now seen corresponding path program 1 times [2019-10-15 03:31:43,837 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:43,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916718117] [2019-10-15 03:31:43,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:43,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:43,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:43,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916718117] [2019-10-15 03:31:43,941 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:43,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:31:43,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446290027] [2019-10-15 03:31:43,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:31:43,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:43,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:31:43,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:31:43,943 INFO L87 Difference]: Start difference. First operand 434 states and 548 transitions. Second operand 5 states. [2019-10-15 03:31:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:44,467 INFO L93 Difference]: Finished difference Result 1467 states and 2064 transitions. [2019-10-15 03:31:44,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:31:44,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-10-15 03:31:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:44,482 INFO L225 Difference]: With dead ends: 1467 [2019-10-15 03:31:44,482 INFO L226 Difference]: Without dead ends: 1049 [2019-10-15 03:31:44,486 INFO L600 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 [2019-10-15 03:31:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-10-15 03:31:44,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1009. [2019-10-15 03:31:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-10-15 03:31:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1361 transitions. [2019-10-15 03:31:44,608 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1361 transitions. Word has length 70 [2019-10-15 03:31:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:44,608 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1361 transitions. [2019-10-15 03:31:44,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:31:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1361 transitions. [2019-10-15 03:31:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-15 03:31:44,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:44,612 INFO L380 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] [2019-10-15 03:31:44,612 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1314740249, now seen corresponding path program 1 times [2019-10-15 03:31:44,613 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:44,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072490018] [2019-10-15 03:31:44,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:44,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:44,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:44,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072490018] [2019-10-15 03:31:44,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:31:44,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:31:44,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276862017] [2019-10-15 03:31:44,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:31:44,713 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:31:44,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:31:44,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:31:44,714 INFO L87 Difference]: Start difference. First operand 1009 states and 1361 transitions. Second operand 4 states. [2019-10-15 03:31:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:31:44,927 INFO L93 Difference]: Finished difference Result 1257 states and 1711 transitions. [2019-10-15 03:31:44,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:31:44,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2019-10-15 03:31:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:31:44,942 INFO L225 Difference]: With dead ends: 1257 [2019-10-15 03:31:44,942 INFO L226 Difference]: Without dead ends: 1254 [2019-10-15 03:31:44,943 INFO L600 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 [2019-10-15 03:31:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2019-10-15 03:31:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1209. [2019-10-15 03:31:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2019-10-15 03:31:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1638 transitions. [2019-10-15 03:31:45,046 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1638 transitions. Word has length 71 [2019-10-15 03:31:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:31:45,046 INFO L462 AbstractCegarLoop]: Abstraction has 1209 states and 1638 transitions. [2019-10-15 03:31:45,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:31:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1638 transitions. [2019-10-15 03:31:45,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 03:31:45,052 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:45,052 INFO L380 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] [2019-10-15 03:31:45,052 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:45,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2102562176, now seen corresponding path program 1 times [2019-10-15 03:31:45,053 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:45,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801545535] [2019-10-15 03:31:45,054 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:45,054 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:45,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:45,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801545535] [2019-10-15 03:31:45,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423512597] [2019-10-15 03:31:45,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:31:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:31:45,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:31:45,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:31:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:45,501 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:31:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:31:45,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [334907688] [2019-10-15 03:31:45,698 INFO L162 IcfgInterpreter]: Started Sifa with 71 locations of interest [2019-10-15 03:31:45,698 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:31:45,706 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:31:45,718 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:31:45,719 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:31:46,067 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 52 for LOIs [2019-10-15 03:31:46,145 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 76 for LOIs [2019-10-15 03:31:46,711 INFO L199 IcfgInterpreter]: Interpreting procedure init_model with input of size 56 for LOIs [2019-10-15 03:31:46,830 INFO L199 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 86 for LOIs [2019-10-15 03:31:48,274 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-15 03:31:48,418 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 130 [2019-10-15 03:31:48,975 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-10-15 03:31:55,652 INFO L199 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 69 for LOIs [2019-10-15 03:31:55,711 INFO L199 IcfgInterpreter]: Interpreting procedure update_channels with input of size 58 for LOIs [2019-10-15 03:31:55,770 INFO L199 IcfgInterpreter]: Interpreting procedure eval with input of size 76 for LOIs [2019-10-15 03:31:58,018 INFO L199 IcfgInterpreter]: Interpreting procedure do_read_c with input of size 59 for LOIs [2019-10-15 03:31:58,115 INFO L199 IcfgInterpreter]: Interpreting procedure error with input of size 40 for LOIs [2019-10-15 03:31:58,129 INFO L199 IcfgInterpreter]: Interpreting procedure do_write_p with input of size 66 for LOIs [2019-10-15 03:31:58,516 INFO L199 IcfgInterpreter]: Interpreting procedure init_threads with input of size 62 for LOIs [2019-10-15 03:31:58,552 INFO L199 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 60 for LOIs [2019-10-15 03:31:58,582 INFO L199 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 46 for LOIs [2019-10-15 03:31:58,605 INFO L199 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 67 for LOIs [2019-10-15 03:31:59,402 INFO L199 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 63 for LOIs [2019-10-15 03:31:59,601 INFO L199 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 54 for LOIs [2019-10-15 03:31:59,661 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:32:00,019 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2019-10-15 03:32:00,627 WARN L191 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 87 [2019-10-15 03:32:01,002 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2019-10-15 03:32:01,385 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2019-10-15 03:32:01,982 WARN L191 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 89 [2019-10-15 03:32:02,532 WARN L191 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 83 [2019-10-15 03:32:03,101 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 85 [2019-10-15 03:32:03,374 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2019-10-15 03:32:03,958 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2019-10-15 03:32:04,141 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2019-10-15 03:32:05,370 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2019-10-15 03:32:05,811 WARN L191 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-10-15 03:32:06,401 WARN L191 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 83 [2019-10-15 03:32:06,900 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2019-10-15 03:32:07,168 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2019-10-15 03:32:07,564 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-10-15 03:32:07,907 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2019-10-15 03:32:08,085 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2019-10-15 03:32:08,266 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2019-10-15 03:32:08,489 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2019-10-15 03:32:08,667 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2019-10-15 03:32:08,877 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2019-10-15 03:32:09,107 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2019-10-15 03:32:09,601 WARN L191 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2019-10-15 03:32:09,757 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2019-10-15 03:32:10,342 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2019-10-15 03:32:10,702 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2019-10-15 03:32:11,388 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2019-10-15 03:32:11,783 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-10-15 03:32:12,196 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2019-10-15 03:32:12,683 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2019-10-15 03:32:13,173 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2019-10-15 03:32:13,488 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2019-10-15 03:32:14,236 WARN L191 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2019-10-15 03:32:14,928 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2019-10-15 03:32:15,310 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-10-15 03:32:15,768 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2019-10-15 03:32:16,236 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2019-10-15 03:32:16,478 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2019-10-15 03:32:16,984 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2019-10-15 03:32:17,255 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2019-10-15 03:32:17,529 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-10-15 03:32:17,532 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:32:17,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6, 48] total 61 [2019-10-15 03:32:17,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050985775] [2019-10-15 03:32:17,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 61 states [2019-10-15 03:32:17,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:17,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2019-10-15 03:32:17,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=3233, Unknown=0, NotChecked=0, Total=3660 [2019-10-15 03:32:17,537 INFO L87 Difference]: Start difference. First operand 1209 states and 1638 transitions. Second operand 61 states. [2019-10-15 03:32:18,156 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87