/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:17:44,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:17:44,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:17:44,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:17:44,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:17:44,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:17:44,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:17:44,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:17:44,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:17:44,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:17:44,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:17:44,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:17:44,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:17:44,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:17:44,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:17:44,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:17:44,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:17:44,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:17:44,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:17:44,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:17:44,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:17:44,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:17:44,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:17:44,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:17:44,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:17:44,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:17:44,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:17:44,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:17:44,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:17:44,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:17:44,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:17:44,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:17:44,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:17:44,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:17:44,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:17:44,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:17:44,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:17:44,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:17:44,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:17:44,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:17:44,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:17:44,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:17:44,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:17:44,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:17:44,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:17:44,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:17:44,830 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:17:44,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:17:44,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:17:44,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:17:44,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:17:44,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:17:44,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:17:44,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:17:44,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:17:44,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:17:44,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:17:44,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:17:44,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:17:44,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:17:44,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:17:44,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:17:44,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:17:44,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:17:44,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:17:44,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:17:44,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:17:44,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:17:44,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:17:44,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:17:44,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:17:44,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:17:45,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:17:45,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:17:45,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:17:45,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:17:45,201 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:17:45,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c [2020-08-18 12:17:45,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc8dc3c5f/9c17b4f4b317476e8235fc0c1a12c55f/FLAG6fe38abe7 [2020-08-18 12:17:45,736 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:17:45,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c [2020-08-18 12:17:45,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc8dc3c5f/9c17b4f4b317476e8235fc0c1a12c55f/FLAG6fe38abe7 [2020-08-18 12:17:46,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc8dc3c5f/9c17b4f4b317476e8235fc0c1a12c55f [2020-08-18 12:17:46,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:17:46,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:17:46,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:17:46,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:17:46,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:17:46,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377d8449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46, skipping insertion in model container [2020-08-18 12:17:46,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:17:46,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:17:46,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:17:46,373 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:17:46,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:17:46,428 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:17:46,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46 WrapperNode [2020-08-18 12:17:46,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:17:46,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:17:46,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:17:46,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:17:46,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (1/1) ... [2020-08-18 12:17:46,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:17:46,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:17:46,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:17:46,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:17:46,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 12:17:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:17:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:17:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 12:17:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-08-18 12:17:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-08-18 12:17:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-08-18 12:17:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-08-18 12:17:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-08-18 12:17:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 12:17:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 12:17:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 12:17:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 12:17:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 12:17:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 12:17:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:17:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:17:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:17:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 12:17:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-08-18 12:17:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-08-18 12:17:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-08-18 12:17:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-08-18 12:17:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-08-18 12:17:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 12:17:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 12:17:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 12:17:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 12:17:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 12:17:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 12:17:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:17:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:17:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:17:47,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:17:47,014 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 12:17:47,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:17:47 BoogieIcfgContainer [2020-08-18 12:17:47,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:17:47,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:17:47,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:17:47,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:17:47,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:17:46" (1/3) ... [2020-08-18 12:17:47,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23df7595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:17:47, skipping insertion in model container [2020-08-18 12:17:47,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:17:46" (2/3) ... [2020-08-18 12:17:47,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23df7595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:17:47, skipping insertion in model container [2020-08-18 12:17:47,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:17:47" (3/3) ... [2020-08-18 12:17:47,028 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2020-08-18 12:17:47,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:17:47,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:17:47,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:17:47,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:17:47,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:17:47,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:17:47,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:17:47,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:17:47,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:17:47,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:17:47,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:17:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-08-18 12:17:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 12:17:47,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:17:47,124 INFO L422 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] [2020-08-18 12:17:47,124 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:17:47,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:17:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash 332338830, now seen corresponding path program 1 times [2020-08-18 12:17:47,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:17:47,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686895512] [2020-08-18 12:17:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:17:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 12:17:47,330 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 12:17:47,331 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:17:47,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:17:47,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:17:47 BoogieIcfgContainer [2020-08-18 12:17:47,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:17:47,359 INFO L168 Benchmark]: Toolchain (without parser) took 1260.17 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 135.7 MB in the end (delta: -33.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-08-18 12:17:47,361 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 12:17:47,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.38 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 89.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 12:17:47,363 INFO L168 Benchmark]: Boogie Preprocessor took 130.92 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.3 MB in the beginning and 178.7 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-18 12:17:47,364 INFO L168 Benchmark]: RCFGBuilder took 459.18 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 151.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-08-18 12:17:47,365 INFO L168 Benchmark]: TraceAbstraction took 335.05 ms. Allocated memory is still 201.3 MB. Free memory was 150.9 MB in the beginning and 135.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-08-18 12:17:47,370 INFO L336 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 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.38 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 89.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.92 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.3 MB in the beginning and 178.7 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.18 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 151.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 335.05 ms. Allocated memory is still 201.3 MB. Free memory was 150.9 MB in the beginning and 135.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 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 ; [L354] CALL init_model() [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() [L355] CALL start_simulation() [L304] int kernel_st ; [L305] int tmp ; [L309] kernel_st = 0 [L310] CALL init_threads() [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() [L313] COND TRUE 1 [L316] kernel_st = 1 [L317] CALL eval() [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L237] COND TRUE 1 [L240] CALL, EXPR exists_runnable_thread() [L211] int __retres1 ; [L214] COND TRUE (int )p_dw_st == 0 [L215] __retres1 = 1 [L227] return (__retres1); [L240] RET, EXPR exists_runnable_thread() [L240] tmp___1 = exists_runnable_thread() [L242] COND TRUE \read(tmp___1) [L247] COND TRUE (int )p_dw_st == 0 [L249] tmp = __VERIFIER_nondet_int() [L251] COND FALSE !(\read(tmp)) [L257] CALL error() [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred 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, 34 NumberOfCodeBlocks, 34 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...