/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:57:52,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:57:52,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:57:52,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:57:52,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:57:52,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:57:52,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:57:52,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:57:52,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:57:52,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:57:52,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:57:52,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:57:52,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:57:52,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:57:52,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:57:52,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:57:52,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:57:52,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:57:52,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:57:52,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:57:52,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:57:52,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:57:52,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:57:52,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:57:52,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:57:52,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:57:52,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:57:52,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:57:52,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:57:52,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:57:52,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:57:52,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:57:52,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:57:52,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:57:52,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:57:52,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:57:52,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:57:52,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:57:52,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:57:52,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:57:52,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:57:52,672 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 [2020-09-24 22:57:52,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:57:52,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:57:52,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:57:52,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:57:52,728 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:57:52,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:57:52,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:57:52,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:57:52,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:57:52,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:57:52,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:57:52,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:57:52,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:57:52,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:57:52,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:57:52,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:57:52,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:57:52,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:57:52,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:57:52,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:57:52,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:57:52,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:57:52,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:57:52,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:57:52,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:57:52,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:57:52,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:57:52,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:57:52,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:57:52,735 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:57:53,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:57:53,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:57:53,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:57:53,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:57:53,213 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:57:53,214 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-09-24 22:57:53,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0b1f40fc/7791a346b7944503a12d29b569d9b9c3/FLAG72f9ba261 [2020-09-24 22:57:53,881 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:57:53,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-09-24 22:57:53,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0b1f40fc/7791a346b7944503a12d29b569d9b9c3/FLAG72f9ba261 [2020-09-24 22:57:54,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0b1f40fc/7791a346b7944503a12d29b569d9b9c3 [2020-09-24 22:57:54,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:57:54,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:57:54,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:54,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:57:54,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:57:54,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494a0c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54, skipping insertion in model container [2020-09-24 22:57:54,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:57:54,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:57:54,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:54,557 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:57:54,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:54,703 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:57:54,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54 WrapperNode [2020-09-24 22:57:54,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:54,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:57:54,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:57:54,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:57:54,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:57:54,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:57:54,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:57:54,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:57:54,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (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 [2020-09-24 22:57:54,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:57:54,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:57:54,848 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-24 22:57:54,848 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2020-09-24 22:57:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-09-24 22:57:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-09-24 22:57:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-09-24 22:57:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-09-24 22:57:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-09-24 22:57:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-09-24 22:57:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-24 22:57:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-24 22:57:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-09-24 22:57:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-09-24 22:57:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-09-24 22:57:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-24 22:57:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-24 22:57:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-24 22:57:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-24 22:57:54,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:57:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:57:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:57:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-24 22:57:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2020-09-24 22:57:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-09-24 22:57:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-09-24 22:57:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-09-24 22:57:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-09-24 22:57:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-09-24 22:57:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-09-24 22:57:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-24 22:57:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-24 22:57:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-09-24 22:57:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-09-24 22:57:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-09-24 22:57:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-24 22:57:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-24 22:57:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-24 22:57:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-24 22:57:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:57:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:57:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:57:55,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:57:55,427 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 22:57:55,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:55 BoogieIcfgContainer [2020-09-24 22:57:55,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:57:55,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:57:55,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:57:55,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:57:55,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:57:54" (1/3) ... [2020-09-24 22:57:55,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f71c070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:55, skipping insertion in model container [2020-09-24 22:57:55,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (2/3) ... [2020-09-24 22:57:55,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f71c070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:55, skipping insertion in model container [2020-09-24 22:57:55,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:55" (3/3) ... [2020-09-24 22:57:55,446 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2020-09-24 22:57:55,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:57:55,471 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:57:55,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:57:55,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:57:55,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:57:55,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:57:55,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:57:55,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:57:55,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:57:55,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:57:55,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:57:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states. [2020-09-24 22:57:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 22:57:55,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:55,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:55,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2038925416, now seen corresponding path program 1 times [2020-09-24 22:57:55,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:55,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323514732] [2020-09-24 22:57:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:57:55,928 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:57:55,929 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:57:55,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:57:55,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:57:55 BoogieIcfgContainer [2020-09-24 22:57:55,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:57:55,964 INFO L168 Benchmark]: Toolchain (without parser) took 1767.64 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 121.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:55,965 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:57:55,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.98 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 182.7 MB in the end (delta: -79.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:55,967 INFO L168 Benchmark]: Boogie Preprocessor took 52.23 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 180.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:55,968 INFO L168 Benchmark]: RCFGBuilder took 677.49 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 141.8 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:55,969 INFO L168 Benchmark]: TraceAbstraction took 523.29 ms. Allocated memory is still 203.9 MB. Free memory was 141.2 MB in the beginning and 121.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:55,973 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 503.98 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 182.7 MB in the end (delta: -79.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.23 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 180.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.49 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 141.8 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 523.29 ms. Allocated memory is still 203.9 MB. Free memory was 141.2 MB in the beginning and 121.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int q_buf_0 ; [L16] int q_free ; [L17] int q_read_ev ; [L18] int q_write_ev ; [L19] int q_req_up ; [L20] int q_ev ; [L41] int p_num_write ; [L42] int p_last_write ; [L43] int p_dw_st ; [L44] int p_dw_pc ; [L45] int p_dw_i ; [L46] int c_num_read ; [L47] int c_last_read ; [L48] int c_dr_st ; [L49] int c_dr_pc ; [L50] int c_dr_i ; [L154] static int a_t ; [L456] int __retres1 ; [L460] CALL init_model() [L442] q_free = 1 [L443] q_write_ev = 2 [L444] q_read_ev = q_write_ev [L445] p_num_write = 0 [L446] p_dw_pc = 0 [L447] p_dw_i = 1 [L448] c_num_read = 0 [L449] c_dr_pc = 0 [L450] c_dr_i = 1 [L460] RET init_model() [L461] CALL start_simulation() [L396] int kernel_st ; [L397] int tmp ; [L401] kernel_st = 0 [L402] CALL update_channels() [L212] COND FALSE !((int )q_req_up == 1) [L402] RET update_channels() [L403] CALL init_threads() [L227] COND TRUE (int )p_dw_i == 1 [L228] p_dw_st = 0 [L232] COND TRUE (int )c_dr_i == 1 [L233] c_dr_st = 0 [L403] RET init_threads() [L404] CALL fire_delta_events() [L265] COND FALSE !((int )q_read_ev == 0) [L270] COND FALSE !((int )q_write_ev == 0) [L404] RET fire_delta_events() [L405] CALL activate_threads() [L298] int tmp ; [L299] int tmp___0 ; [L303] CALL, EXPR is_do_write_p_triggered() [L52] int __retres1 ; [L55] COND FALSE !((int )p_dw_pc == 1) [L65] __retres1 = 0 [L67] return (__retres1); [L303] RET, EXPR is_do_write_p_triggered() [L303] tmp = is_do_write_p_triggered() [L305] COND FALSE !(\read(tmp)) [L311] CALL, EXPR is_do_read_c_triggered() [L71] int __retres1 ; [L74] COND FALSE !((int )c_dr_pc == 1) [L84] __retres1 = 0 [L86] return (__retres1); [L311] RET, EXPR is_do_read_c_triggered() [L311] tmp___0 = is_do_read_c_triggered() [L313] COND FALSE !(\read(tmp___0)) [L405] RET activate_threads() [L406] CALL reset_delta_events() [L283] COND FALSE !((int )q_read_ev == 1) [L288] COND FALSE !((int )q_write_ev == 1) [L406] RET reset_delta_events() [L409] COND TRUE 1 [L412] kernel_st = 1 [L413] CALL eval() [L323] int tmp ; [L324] int tmp___0 ; [L325] int tmp___1 ; [L329] COND TRUE 1 [L332] CALL, EXPR exists_runnable_thread() [L242] int __retres1 ; [L245] COND TRUE (int )p_dw_st == 0 [L246] __retres1 = 1 [L258] return (__retres1); [L332] RET, EXPR exists_runnable_thread() [L332] tmp___1 = exists_runnable_thread() [L334] COND TRUE \read(tmp___1) [L339] COND TRUE (int )p_dw_st == 0 [L341] tmp = __VERIFIER_nondet_int() [L343] COND FALSE !(\read(tmp)) [L349] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 20 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=228occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 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...