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_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:31:34,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:31:34,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:31:34,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:31:34,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:31:34,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:31:34,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:31:34,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:31:34,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:31:34,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:31:34,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:31:34,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:31:34,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:31:34,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:31:34,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:31:34,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:31:34,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:31:34,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:31:34,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:31:34,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:31:34,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:31:34,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:31:34,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:31:34,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:31:34,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:31:34,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:31:34,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:31:34,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:31:34,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:31:34,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:31:34,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:31:34,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:31:34,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:31:34,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:31:34,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:31:34,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:31:34,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:31:34,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:31:34,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:31:34,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:31:34,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:31:34,637 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 03:31:34,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:31:34,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:31:34,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:31:34,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:31:34,675 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:31:34,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:31:34,676 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:31:34,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:31:34,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:31:34,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:31:34,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:31:34,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:31:34,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:31:34,677 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:31:34,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:31:34,677 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:31:34,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:31:34,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:31:34,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:31:34,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:31:34,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:31:34,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:31:34,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:31:34,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:31:34,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:31:34,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:31:34,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:31:34,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:31:34,680 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 03:31:34,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:31:34,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:31:34,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:31:34,990 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:31:34,991 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:31:34,991 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c [2019-10-15 03:31:35,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3a6e8256/d6d1cd585cb94918bb0edd54f3756b6b/FLAG6d634393c [2019-10-15 03:31:35,502 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:31:35,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c [2019-10-15 03:31:35,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3a6e8256/d6d1cd585cb94918bb0edd54f3756b6b/FLAG6d634393c [2019-10-15 03:31:35,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3a6e8256/d6d1cd585cb94918bb0edd54f3756b6b [2019-10-15 03:31:35,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:31:35,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:31:35,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:35,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:31:35,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:31:35,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:35" (1/1) ... [2019-10-15 03:31:35,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:35, skipping insertion in model container [2019-10-15 03:31:35,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:31:35" (1/1) ... [2019-10-15 03:31:35,913 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:31:35,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:31:36,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:36,135 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:31:36,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:31:36,287 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:31:36,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36 WrapperNode [2019-10-15 03:31:36,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:31:36,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:31:36,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:31:36,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:31:36,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (1/1) ... [2019-10-15 03:31:36,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (1/1) ... [2019-10-15 03:31:36,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (1/1) ... [2019-10-15 03:31:36,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (1/1) ... [2019-10-15 03:31:36,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (1/1) ... [2019-10-15 03:31:36,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (1/1) ... [2019-10-15 03:31:36,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (1/1) ... [2019-10-15 03:31:36,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:31:36,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:31:36,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:31:36,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:31:36,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (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 03:31:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:31:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:31:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-15 03:31:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-10-15 03:31:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-10-15 03:31:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-10-15 03:31:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-10-15 03:31:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-10-15 03:31:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-15 03:31:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-15 03:31:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-15 03:31:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-15 03:31:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-15 03:31:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-15 03:31:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:31:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:31:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:31:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-15 03:31:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-10-15 03:31:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-10-15 03:31:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-10-15 03:31:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-10-15 03:31:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-10-15 03:31:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-15 03:31:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-15 03:31:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-15 03:31:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-15 03:31:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-15 03:31:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-15 03:31:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:31:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:31:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:31:36,945 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:31:36,945 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 03:31:36,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:36 BoogieIcfgContainer [2019-10-15 03:31:36,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:31:36,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:31:36,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:31:36,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:31:36,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:31:35" (1/3) ... [2019-10-15 03:31:36,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcadaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:36, skipping insertion in model container [2019-10-15 03:31:36,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:31:36" (2/3) ... [2019-10-15 03:31:36,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcadaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:31:36, skipping insertion in model container [2019-10-15 03:31:36,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:31:36" (3/3) ... [2019-10-15 03:31:36,956 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2019-10-15 03:31:36,966 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:31:36,974 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:31:36,985 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:31:37,011 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:31:37,012 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:31:37,012 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:31:37,012 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:31:37,013 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:31:37,013 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:31:37,013 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:31:37,013 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:31:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2019-10-15 03:31:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 03:31:37,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:31:37,043 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] [2019-10-15 03:31:37,045 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:31:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:31:37,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1717171110, now seen corresponding path program 1 times [2019-10-15 03:31:37,060 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:31:37,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752645152] [2019-10-15 03:31:37,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:37,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:31:37,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:31:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 03:31:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 03:31:37,358 INFO L168 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-15 03:31:37,359 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-15 03:31:37,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:31:37 BoogieIcfgContainer [2019-10-15 03:31:37,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:31:37,419 INFO L168 Benchmark]: Toolchain (without parser) took 1520.01 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 103.2 MB in the beginning and 119.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2019-10-15 03:31:37,420 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 03:31:37,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.45 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 179.9 MB in the end (delta: -76.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-10-15 03:31:37,422 INFO L168 Benchmark]: Boogie Preprocessor took 37.09 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 177.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-15 03:31:37,423 INFO L168 Benchmark]: RCFGBuilder took 621.60 ms. Allocated memory is still 200.8 MB. Free memory was 177.5 MB in the beginning and 140.2 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2019-10-15 03:31:37,424 INFO L168 Benchmark]: TraceAbstraction took 468.24 ms. Allocated memory is still 200.8 MB. Free memory was 139.5 MB in the beginning and 119.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-10-15 03:31:37,429 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.45 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 179.9 MB in the end (delta: -76.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.09 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 177.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 621.60 ms. Allocated memory is still 200.8 MB. Free memory was 177.5 MB in the beginning and 140.2 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 468.24 ms. Allocated memory is still 200.8 MB. Free memory was 139.5 MB in the beginning and 119.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int q_buf_0 ; [L15] int q_free ; [L16] int q_read_ev ; [L17] int q_write_ev ; [L18] int p_num_write ; [L19] int p_last_write ; [L20] int p_dw_st ; [L21] int p_dw_pc ; [L22] int p_dw_i ; [L23] int c_num_read ; [L24] int c_last_read ; [L25] int c_dr_st ; [L26] int c_dr_pc ; [L27] int c_dr_i ; [L134] static int a_t ; [L350] int __retres1 ; VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=0, \old(q_read_ev)=0, \old(q_write_ev)=0, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=0, q_read_ev=0, q_write_ev=0] [L354] CALL init_model() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=0, \old(q_read_ev)=0, \old(q_write_ev)=0, a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=0, q_read_ev=0, q_write_ev=0] [L336] q_free = 1 [L337] q_write_ev = 2 [L338] q_read_ev = q_write_ev [L339] p_num_write = 0 [L340] p_dw_pc = 0 [L341] p_dw_i = 1 [L342] c_num_read = 0 [L343] c_dr_pc = 0 [L344] c_dr_i = 1 [L354] RET init_model() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=0, \old(q_read_ev)=0, \old(q_write_ev)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L355] CALL start_simulation() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L304] int kernel_st ; [L305] int tmp ; [L309] kernel_st = 0 VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L310] CALL init_threads() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L196] COND TRUE (int )p_dw_i == 1 [L197] p_dw_st = 0 [L201] COND TRUE (int )c_dr_i == 1 [L202] c_dr_st = 0 [L310] RET init_threads() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L313] COND TRUE 1 [L316] kernel_st = 1 VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=1, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L317] CALL eval() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L237] COND TRUE 1 VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L240] CALL, EXPR exists_runnable_thread() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L211] int __retres1 ; [L214] COND TRUE (int )p_dw_st == 0 [L215] __retres1 = 1 [L227] return (__retres1); [L240] RET, EXPR exists_runnable_thread() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, exists_runnable_thread()=1, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L240] tmp___1 = exists_runnable_thread() [L242] COND TRUE \read(tmp___1) VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, tmp___1=1] [L247] COND TRUE (int )p_dw_st == 0 [L249] tmp = __VERIFIER_nondet_int() [L251] COND FALSE !(\read(tmp)) VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, tmp=0, tmp___1=1] [L257] CALL error() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L9] __VERIFIER_error() VAL [\old(a_t)=0, \old(c_dr_i)=0, \old(c_dr_pc)=0, \old(c_dr_st)=0, \old(c_last_read)=0, \old(c_num_read)=0, \old(p_dw_i)=0, \old(p_dw_pc)=0, \old(p_dw_st)=0, \old(p_last_write)=0, \old(p_num_write)=0, \old(q_buf_0)=0, \old(q_free)=1, \old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 88 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...