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 0.1.24-36ac518-m [2019-10-07 17:14:00,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 17:14:00,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 17:14:00,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 17:14:00,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 17:14:00,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 17:14:00,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 17:14:00,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 17:14:00,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 17:14:00,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 17:14:00,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 17:14:00,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 17:14:00,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 17:14:00,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 17:14:00,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 17:14:00,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 17:14:00,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 17:14:00,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 17:14:00,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 17:14:00,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 17:14:00,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 17:14:00,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 17:14:00,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 17:14:00,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 17:14:00,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 17:14:00,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 17:14:00,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 17:14:00,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 17:14:00,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 17:14:00,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 17:14:00,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 17:14:00,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 17:14:00,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 17:14:00,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 17:14:00,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 17:14:00,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 17:14:00,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 17:14:00,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 17:14:00,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 17:14:00,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 17:14:00,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 17:14:00,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 17:14:00,129 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 17:14:00,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 17:14:00,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 17:14:00,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 17:14:00,131 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 17:14:00,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 17:14:00,131 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 17:14:00,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 17:14:00,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 17:14:00,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 17:14:00,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 17:14:00,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 17:14:00,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 17:14:00,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 17:14:00,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 17:14:00,133 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 17:14:00,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 17:14:00,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 17:14:00,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 17:14:00,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 17:14:00,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 17:14:00,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 17:14:00,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 17:14:00,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 17:14:00,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 17:14:00,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 17:14:00,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 17:14:00,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 17:14:00,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 17:14:00,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 17:14:00,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 17:14:00,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 17:14:00,456 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 17:14:00,457 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 17:14:00,457 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c [2019-10-07 17:14:00,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/077b544b5/5f6e8807479f4751a4e1b5d980eeec95/FLAG6147bad7a [2019-10-07 17:14:00,998 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 17:14:00,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c [2019-10-07 17:14:01,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/077b544b5/5f6e8807479f4751a4e1b5d980eeec95/FLAG6147bad7a [2019-10-07 17:14:01,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/077b544b5/5f6e8807479f4751a4e1b5d980eeec95 [2019-10-07 17:14:01,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 17:14:01,373 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 17:14:01,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 17:14:01,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 17:14:01,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 17:14:01,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358a6207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01, skipping insertion in model container [2019-10-07 17:14:01,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,389 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 17:14:01,433 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 17:14:01,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 17:14:01,645 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 17:14:01,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 17:14:01,793 INFO L192 MainTranslator]: Completed translation [2019-10-07 17:14:01,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01 WrapperNode [2019-10-07 17:14:01,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 17:14:01,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 17:14:01,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 17:14:01,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 17:14:01,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (1/1) ... [2019-10-07 17:14:01,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 17:14:01,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 17:14:01,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 17:14:01,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 17:14:01,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 17:14:01,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 17:14:01,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 17:14:01,896 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-07 17:14:01,896 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2019-10-07 17:14:01,896 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-10-07 17:14:01,896 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-10-07 17:14:01,896 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-10-07 17:14:01,896 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-10-07 17:14:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-10-07 17:14:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-07 17:14:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-07 17:14:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-07 17:14:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-07 17:14:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-07 17:14:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-07 17:14:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-07 17:14:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-07 17:14:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-07 17:14:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-07 17:14:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 17:14:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 17:14:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 17:14:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-07 17:14:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2019-10-07 17:14:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-10-07 17:14:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-10-07 17:14:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-10-07 17:14:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-10-07 17:14:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-10-07 17:14:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-07 17:14:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-07 17:14:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-07 17:14:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-07 17:14:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-07 17:14:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-07 17:14:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-07 17:14:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-07 17:14:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-07 17:14:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-07 17:14:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 17:14:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 17:14:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 17:14:02,627 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 17:14:02,627 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 17:14:02,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 05:14:02 BoogieIcfgContainer [2019-10-07 17:14:02,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 17:14:02,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 17:14:02,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 17:14:02,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 17:14:02,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 05:14:01" (1/3) ... [2019-10-07 17:14:02,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b1ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 05:14:02, skipping insertion in model container [2019-10-07 17:14:02,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:01" (2/3) ... [2019-10-07 17:14:02,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b1ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 05:14:02, skipping insertion in model container [2019-10-07 17:14:02,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 05:14:02" (3/3) ... [2019-10-07 17:14:02,637 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1.c [2019-10-07 17:14:02,646 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 17:14:02,652 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 17:14:02,661 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 17:14:02,685 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 17:14:02,686 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 17:14:02,686 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 17:14:02,686 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 17:14:02,686 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 17:14:02,686 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 17:14:02,687 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 17:14:02,687 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 17:14:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2019-10-07 17:14:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-07 17:14:02,718 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:02,719 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 17:14:02,721 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:02,727 INFO L82 PathProgramCache]: Analyzing trace with hash -396785800, now seen corresponding path program 1 times [2019-10-07 17:14:02,734 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:02,734 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:02,735 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:02,735 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:03,072 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:03,073 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 17:14:03,073 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 17:14:03,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 17:14:03,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 17:14:03,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 17:14:03,095 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states. [2019-10-07 17:14:03,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:03,398 INFO L93 Difference]: Finished difference Result 271 states and 362 transitions. [2019-10-07 17:14:03,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 17:14:03,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2019-10-07 17:14:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:03,414 INFO L225 Difference]: With dead ends: 271 [2019-10-07 17:14:03,414 INFO L226 Difference]: Without dead ends: 172 [2019-10-07 17:14:03,419 INFO L606 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 [2019-10-07 17:14:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-10-07 17:14:03,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 163. [2019-10-07 17:14:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-10-07 17:14:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2019-10-07 17:14:03,505 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 197 transitions. Word has length 60 [2019-10-07 17:14:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:03,505 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 197 transitions. [2019-10-07 17:14:03,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 17:14:03,506 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 197 transitions. [2019-10-07 17:14:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-07 17:14:03,512 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:03,512 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 17:14:03,512 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash 640256483, now seen corresponding path program 1 times [2019-10-07 17:14:03,513 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:03,513 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:03,514 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:03,514 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:03,806 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:03,807 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 17:14:03,807 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 17:14:03,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 17:14:03,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 17:14:03,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-07 17:14:03,814 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand 7 states. [2019-10-07 17:14:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:04,247 INFO L93 Difference]: Finished difference Result 606 states and 788 transitions. [2019-10-07 17:14:04,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 17:14:04,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-07 17:14:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:04,258 INFO L225 Difference]: With dead ends: 606 [2019-10-07 17:14:04,259 INFO L226 Difference]: Without dead ends: 460 [2019-10-07 17:14:04,265 INFO L606 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 [2019-10-07 17:14:04,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-10-07 17:14:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 434. [2019-10-07 17:14:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-10-07 17:14:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 548 transitions. [2019-10-07 17:14:04,373 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 548 transitions. Word has length 61 [2019-10-07 17:14:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:04,374 INFO L462 AbstractCegarLoop]: Abstraction has 434 states and 548 transitions. [2019-10-07 17:14:04,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 17:14:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 548 transitions. [2019-10-07 17:14:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-07 17:14:04,380 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:04,381 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 17:14:04,381 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1370943992, now seen corresponding path program 1 times [2019-10-07 17:14:04,382 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:04,382 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:04,382 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:04,382 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:04,482 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:04,482 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 17:14:04,482 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 17:14:04,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 17:14:04,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 17:14:04,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 17:14:04,485 INFO L87 Difference]: Start difference. First operand 434 states and 548 transitions. Second operand 5 states. [2019-10-07 17:14:05,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:05,017 INFO L93 Difference]: Finished difference Result 1467 states and 2064 transitions. [2019-10-07 17:14:05,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 17:14:05,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-10-07 17:14:05,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:05,031 INFO L225 Difference]: With dead ends: 1467 [2019-10-07 17:14:05,031 INFO L226 Difference]: Without dead ends: 1049 [2019-10-07 17:14:05,034 INFO L606 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 [2019-10-07 17:14:05,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-10-07 17:14:05,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1009. [2019-10-07 17:14:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-10-07 17:14:05,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1361 transitions. [2019-10-07 17:14:05,156 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1361 transitions. Word has length 70 [2019-10-07 17:14:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:05,157 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1361 transitions. [2019-10-07 17:14:05,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 17:14:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1361 transitions. [2019-10-07 17:14:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-07 17:14:05,166 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:05,167 INFO L385 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] [2019-10-07 17:14:05,167 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:05,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1314740249, now seen corresponding path program 1 times [2019-10-07 17:14:05,168 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:05,168 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:05,168 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:05,168 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:05,270 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:05,271 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 17:14:05,271 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 17:14:05,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 17:14:05,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 17:14:05,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 17:14:05,272 INFO L87 Difference]: Start difference. First operand 1009 states and 1361 transitions. Second operand 4 states. [2019-10-07 17:14:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:05,501 INFO L93 Difference]: Finished difference Result 1257 states and 1711 transitions. [2019-10-07 17:14:05,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 17:14:05,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2019-10-07 17:14:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:05,510 INFO L225 Difference]: With dead ends: 1257 [2019-10-07 17:14:05,510 INFO L226 Difference]: Without dead ends: 1254 [2019-10-07 17:14:05,511 INFO L606 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 [2019-10-07 17:14:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2019-10-07 17:14:05,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1209. [2019-10-07 17:14:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2019-10-07 17:14:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1638 transitions. [2019-10-07 17:14:05,618 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1638 transitions. Word has length 71 [2019-10-07 17:14:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:05,618 INFO L462 AbstractCegarLoop]: Abstraction has 1209 states and 1638 transitions. [2019-10-07 17:14:05,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 17:14:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1638 transitions. [2019-10-07 17:14:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-07 17:14:05,620 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:05,620 INFO L385 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] [2019-10-07 17:14:05,621 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:05,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:05,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2102562176, now seen corresponding path program 1 times [2019-10-07 17:14:05,621 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:05,621 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:05,622 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:05,622 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:05,760 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:05,761 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 17:14:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 17:14:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:05,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-07 17:14:05,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 17:14:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:06,033 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 17:14:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:06,206 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 17:14:06,259 INFO L162 IcfgInterpreter]: Started Sifa with 71 locations of interest [2019-10-07 17:14:06,260 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 17:14:06,267 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 17:14:06,277 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 17:14:06,278 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 17:14:06,594 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 52 for LOIs [2019-10-07 17:14:06,641 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 76 for LOIs [2019-10-07 17:14:07,222 INFO L199 IcfgInterpreter]: Interpreting procedure init_model with input of size 56 for LOIs [2019-10-07 17:14:07,319 INFO L199 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 86 for LOIs [2019-10-07 17:14:08,790 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 131 [2019-10-07 17:14:09,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 17:14:09,760 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee is_do_read_c_triggered at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee is_do_read_c_triggered at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 17:14:09,767 INFO L168 Benchmark]: Toolchain (without parser) took 8392.84 ms. Allocated memory was 137.4 MB in the beginning and 386.4 MB in the end (delta: 249.0 MB). Free memory was 101.5 MB in the beginning and 102.2 MB in the end (delta: -740.8 kB). Peak memory consumption was 248.3 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:09,768 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 17:14:09,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.98 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 178.7 MB in the end (delta: -77.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:09,771 INFO L168 Benchmark]: Boogie Preprocessor took 47.13 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 176.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:09,772 INFO L168 Benchmark]: RCFGBuilder took 786.64 ms. Allocated memory is still 201.3 MB. Free memory was 176.7 MB in the beginning and 127.0 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:09,773 INFO L168 Benchmark]: TraceAbstraction took 7134.49 ms. Allocated memory was 201.3 MB in the beginning and 386.4 MB in the end (delta: 185.1 MB). Free memory was 127.0 MB in the beginning and 102.2 MB in the end (delta: 24.8 MB). Peak memory consumption was 209.9 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:09,783 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 419.98 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 178.7 MB in the end (delta: -77.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.13 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 176.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 786.64 ms. Allocated memory is still 201.3 MB. Free memory was 176.7 MB in the beginning and 127.0 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7134.49 ms. Allocated memory was 201.3 MB in the beginning and 386.4 MB in the end (delta: 185.1 MB). Free memory was 127.0 MB in the beginning and 102.2 MB in the end (delta: 24.8 MB). Peak memory consumption was 209.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee is_do_read_c_triggered de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee is_do_read_c_triggered: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...