/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:15:38,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:15:38,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:15:38,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:15:38,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:15:38,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:15:38,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:15:38,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:15:38,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:15:38,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:15:38,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:15:38,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:15:38,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:15:38,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:15:38,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:15:38,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:15:38,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:15:38,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:15:38,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:15:38,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:15:38,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:15:38,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:15:38,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:15:38,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:15:38,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:15:38,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:15:38,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:15:38,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:15:38,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:15:38,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:15:38,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:15:38,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:15:38,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:15:38,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:15:38,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:15:38,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:15:38,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:15:38,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:15:38,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:15:38,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:15:38,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:15:38,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:15:38,832 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:15:38,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:15:38,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:15:38,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:15:38,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:15:38,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:15:38,834 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:15:38,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:15:38,834 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:15:38,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:15:38,834 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:15:38,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:15:38,835 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:15:38,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:15:38,835 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:15:38,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:15:38,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:15:38,835 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:15:38,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:15:38,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:15:38,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:15:38,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:15:38,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:15:38,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:15:38,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:15:38,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:15:38,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:15:38,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:15:38,837 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:15:38,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:15:38,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:15:38,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:15:38,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:15:38,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:15:38,838 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:15:38,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:15:38,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:15:38,838 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:15:38,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:15:38,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:15:38,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:15:38,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:15:39,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:15:39,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:15:39,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:15:39,096 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:15:39,097 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:15:39,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2023-04-01 12:15:40,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:15:40,534 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:15:40,535 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2023-04-01 12:15:40,541 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70acec727/ed0b6cede6d14d99a62cebf3e6179e9a/FLAGea53338f2 [2023-04-01 12:15:40,552 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70acec727/ed0b6cede6d14d99a62cebf3e6179e9a [2023-04-01 12:15:40,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:15:40,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:15:40,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:15:40,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:15:40,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:15:40,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eeffb9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40, skipping insertion in model container [2023-04-01 12:15:40,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:15:40,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:15:40,697 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c[642,655] [2023-04-01 12:15:40,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:15:40,741 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:15:40,751 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c[642,655] [2023-04-01 12:15:40,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:15:40,780 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:15:40,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40 WrapperNode [2023-04-01 12:15:40,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:15:40,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:15:40,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:15:40,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:15:40,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,827 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:15:40,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:15:40,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:15:40,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:15:40,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (1/1) ... [2023-04-01 12:15:40,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:15:40,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:15:40,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:15:40,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:15:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:15:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:15:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:15:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-01 12:15:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-04-01 12:15:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-04-01 12:15:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-04-01 12:15:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2023-04-01 12:15:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2023-04-01 12:15:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-01 12:15:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-01 12:15:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-01 12:15:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-01 12:15:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-01 12:15:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-01 12:15:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:15:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:15:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:15:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:15:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-01 12:15:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:15:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:15:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:15:40,971 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:15:40,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:15:41,308 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:15:41,432 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:15:41,432 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-01 12:15:41,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:15:41 BoogieIcfgContainer [2023-04-01 12:15:41,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:15:41,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:15:41,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:15:41,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:15:41,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:15:40" (1/3) ... [2023-04-01 12:15:41,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef725d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:15:41, skipping insertion in model container [2023-04-01 12:15:41,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:40" (2/3) ... [2023-04-01 12:15:41,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef725d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:15:41, skipping insertion in model container [2023-04-01 12:15:41,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:15:41" (3/3) ... [2023-04-01 12:15:41,448 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2023-04-01 12:15:41,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:15:41,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:15:41,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:15:41,533 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dd11d7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:15:41,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:15:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 61 states have internal predecessors, (77), 18 states have call successors, (18), 14 states have call predecessors, (18), 14 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-01 12:15:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 12:15:41,546 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:15:41,546 INFO L195 NwaCegarLoop]: 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] [2023-04-01 12:15:41,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:15:41,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:15:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash -839026951, now seen corresponding path program 1 times [2023-04-01 12:15:41,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:15:41,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219078879] [2023-04-01 12:15:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:15:41,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:15:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 12:15:41,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 12:15:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 12:15:41,819 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 12:15:41,820 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 12:15:41,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 12:15:41,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:15:41,827 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-01 12:15:41,830 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 12:15:41,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 12:15:41 BoogieIcfgContainer [2023-04-01 12:15:41,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 12:15:41,888 INFO L158 Benchmark]: Toolchain (without parser) took 1332.74ms. Allocated memory is still 307.2MB. Free memory was 263.8MB in the beginning and 270.8MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 12:15:41,888 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory was 138.2MB in the beginning and 138.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 12:15:41,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.39ms. Allocated memory is still 307.2MB. Free memory was 263.5MB in the beginning and 251.6MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 12:15:41,889 INFO L158 Benchmark]: Boogie Preprocessor took 48.97ms. Allocated memory is still 307.2MB. Free memory was 251.6MB in the beginning and 249.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 12:15:41,890 INFO L158 Benchmark]: RCFGBuilder took 603.17ms. Allocated memory is still 307.2MB. Free memory was 249.6MB in the beginning and 227.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-04-01 12:15:41,890 INFO L158 Benchmark]: TraceAbstraction took 445.77ms. Allocated memory is still 307.2MB. Free memory was 226.8MB in the beginning and 270.8MB in the end (delta: -44.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 12:15:41,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory was 138.2MB in the beginning and 138.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.39ms. Allocated memory is still 307.2MB. Free memory was 263.5MB in the beginning and 251.6MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.97ms. Allocated memory is still 307.2MB. Free memory was 251.6MB in the beginning and 249.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 603.17ms. Allocated memory is still 307.2MB. Free memory was 249.6MB in the beginning and 227.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 445.77ms. Allocated memory is still 307.2MB. Free memory was 226.8MB in the beginning and 270.8MB in the end (delta: -44.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int q_buf_0 ; [L25] int q_free ; [L26] int q_read_ev ; [L27] int q_write_ev ; [L28] int p_num_write ; [L29] int p_last_write ; [L30] int p_dw_st ; [L31] int p_dw_pc ; [L32] int p_dw_i ; [L33] int c_num_read ; [L34] int c_last_read ; [L35] int c_dr_st ; [L36] int c_dr_pc ; [L37] int c_dr_i ; [L144] static int a_t ; [L360] 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] [L364] 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] [L346] q_free = 1 [L347] q_write_ev = 2 [L348] q_read_ev = q_write_ev [L349] p_num_write = 0 [L350] p_dw_pc = 0 [L351] p_dw_i = 1 [L352] c_num_read = 0 [L353] c_dr_pc = 0 [L354] c_dr_i = 1 [L364] 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] [L365] 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] [L314] int kernel_st ; [L315] int tmp ; [L319] 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] [L320] 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] [L206] COND TRUE (int )p_dw_i == 1 [L207] p_dw_st = 0 [L211] COND TRUE (int )c_dr_i == 1 [L212] c_dr_st = 0 [L320] 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] [L323] COND TRUE 1 [L326] 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] [L327] 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] [L241] int tmp ; [L242] int tmp___0 ; [L243] 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] [L247] 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] [L250] 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] [L221] int __retres1 ; [L224] COND TRUE (int )p_dw_st == 0 [L225] __retres1 = 1 [L237] return (__retres1); [L250] 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] [L250] tmp___1 = exists_runnable_thread() [L252] 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] [L257] COND TRUE (int )p_dw_st == 0 [L259] tmp = __VERIFIER_nondet_int() [L261] 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] [L267] 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] [L19] reach_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 16 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=0, InterpolantAutomatonStates: 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, 0.1s 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-01 12:15:41,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...