./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd3c8db8e31ce49eee6a05a7461ee33c144aa3be3e9b156d9a42d1f2ed9b7940 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:28,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:28,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:28,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:28,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:28,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:28,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:28,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:28,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:28,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:28,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:28,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:28,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:28,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:28,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:28,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:28,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:28,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:28,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:28,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:28,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:28,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:28,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:28,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:28,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:28,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:28,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:28,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:29,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:29,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:29,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:29,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:29,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:29,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:29,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:29,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:29,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:29,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:29,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:29,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:29,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:29,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 19:54:29,037 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:29,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:29,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:29,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:29,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:29,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:29,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:29,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:29,040 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:29,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:29,041 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:29,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 19:54:29,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:29,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:29,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:29,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:29,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:29,042 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:29,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:29,042 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:29,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:29,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:29,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:29,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:29,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:29,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:29,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:29,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:29,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 19:54:29,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 19:54:29,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:29,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:29,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:29,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd3c8db8e31ce49eee6a05a7461ee33c144aa3be3e9b156d9a42d1f2ed9b7940 [2022-02-20 19:54:29,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:29,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:29,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:29,281 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:29,282 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:29,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c [2022-02-20 19:54:29,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d76f6f8a/0219e80b41e14a59bc16d6660c0dc257/FLAG3ff24d6e4 [2022-02-20 19:54:29,741 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:29,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c [2022-02-20 19:54:29,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d76f6f8a/0219e80b41e14a59bc16d6660c0dc257/FLAG3ff24d6e4 [2022-02-20 19:54:30,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d76f6f8a/0219e80b41e14a59bc16d6660c0dc257 [2022-02-20 19:54:30,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:30,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:30,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:30,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:30,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:30,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a955145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30, skipping insertion in model container [2022-02-20 19:54:30,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:30,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:30,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c[913,926] [2022-02-20 19:54:30,378 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c[5994,6007] [2022-02-20 19:54:30,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:30,500 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:30,510 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c[913,926] [2022-02-20 19:54:30,525 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c[5994,6007] [2022-02-20 19:54:30,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:30,651 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:30,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30 WrapperNode [2022-02-20 19:54:30,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:30,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:30,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:30,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:30,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,759 INFO L137 Inliner]: procedures = 70, calls = 82, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 998 [2022-02-20 19:54:30,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:30,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:30,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:30,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:30,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:30,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:30,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:30,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:30,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:30,888 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) [2022-02-20 19:54:30,918 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 [2022-02-20 19:54:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 19:54:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:31,058 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:31,060 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:31,941 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:31,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:31,968 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-02-20 19:54:31,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:31 BoogieIcfgContainer [2022-02-20 19:54:31,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:31,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:31,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:31,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:31,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:30" (1/3) ... [2022-02-20 19:54:31,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70acbe66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:31, skipping insertion in model container [2022-02-20 19:54:31,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (2/3) ... [2022-02-20 19:54:31,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70acbe66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:31, skipping insertion in model container [2022-02-20 19:54:31,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:31" (3/3) ... [2022-02-20 19:54:31,978 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.11.cil-2.c [2022-02-20 19:54:31,982 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:31,982 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:32,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:32,043 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:54:32,044 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 430 states, 386 states have (on average 1.645077720207254) internal successors, (635), 392 states have internal predecessors, (635), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-20 19:54:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:32,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:32,085 INFO L514 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] [2022-02-20 19:54:32,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:32,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:32,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1762413941, now seen corresponding path program 1 times [2022-02-20 19:54:32,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:54:32,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997235019] [2022-02-20 19:54:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:32,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:54:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:32,243 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:32,327 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 19:54:32,329 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:32,330 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:32,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:32,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 19:54:32,335 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 19:54:32,338 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:32,395 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:32,396 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 19:54:32,423 INFO L158 Benchmark]: Toolchain (without parser) took 2301.33ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.7MB in the beginning and 84.4MB in the end (delta: -18.7MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2022-02-20 19:54:32,424 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 55.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:32,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.96ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.5MB in the beginning and 81.1MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 19:54:32,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.30ms. Allocated memory is still 121.6MB. Free memory was 81.1MB in the beginning and 74.8MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-02-20 19:54:32,426 INFO L158 Benchmark]: Boogie Preprocessor took 89.48ms. Allocated memory is still 121.6MB. Free memory was 74.8MB in the beginning and 70.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:32,430 INFO L158 Benchmark]: RCFGBuilder took 1113.73ms. Allocated memory is still 121.6MB. Free memory was 70.6MB in the beginning and 70.6MB in the end (delta: 22.0kB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2022-02-20 19:54:32,431 INFO L158 Benchmark]: TraceAbstraction took 449.44ms. Allocated memory is still 121.6MB. Free memory was 70.6MB in the beginning and 84.4MB in the end (delta: -13.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-02-20 19:54:32,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 55.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.96ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.5MB in the beginning and 81.1MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.30ms. Allocated memory is still 121.6MB. Free memory was 81.1MB in the beginning and 74.8MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.48ms. Allocated memory is still 121.6MB. Free memory was 74.8MB in the beginning and 70.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1113.73ms. Allocated memory is still 121.6MB. Free memory was 70.6MB in the beginning and 70.6MB in the end (delta: 22.0kB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * TraceAbstraction took 449.44ms. Allocated memory is still 121.6MB. Free memory was 70.6MB in the beginning and 84.4MB in the end (delta: -13.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * 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 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 19:54:32,476 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd3c8db8e31ce49eee6a05a7461ee33c144aa3be3e9b156d9a42d1f2ed9b7940 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:34,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:34,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:34,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:34,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:34,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:34,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:34,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:34,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:34,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:34,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:34,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:34,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:34,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:34,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:34,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:34,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:34,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:34,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:34,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:34,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:34,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:34,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:34,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:34,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:34,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:34,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:34,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:34,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:34,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:34,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:34,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:34,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:34,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:34,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:34,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:34,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:34,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:34,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:34,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:34,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:34,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 19:54:34,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:34,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:34,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:34,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:34,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:34,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:34,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:34,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:34,538 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:34,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:34,539 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:34,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:34,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:34,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:34,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:34,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:34,540 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 19:54:34,540 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 19:54:34,540 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 19:54:34,540 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:34,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:34,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:34,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:34,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:34,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:34,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:34,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:34,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:34,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:34,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:34,543 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 19:54:34,543 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 19:54:34,543 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:34,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:34,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:34,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 19:54:34,544 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd3c8db8e31ce49eee6a05a7461ee33c144aa3be3e9b156d9a42d1f2ed9b7940 [2022-02-20 19:54:34,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:34,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:34,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:34,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:34,865 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:34,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c [2022-02-20 19:54:34,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a2c0913/548951096ffa4cd185e8ca14e67ddd19/FLAG482f810fb [2022-02-20 19:54:35,453 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:35,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c [2022-02-20 19:54:35,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a2c0913/548951096ffa4cd185e8ca14e67ddd19/FLAG482f810fb [2022-02-20 19:54:35,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a2c0913/548951096ffa4cd185e8ca14e67ddd19 [2022-02-20 19:54:35,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:35,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:35,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:35,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:35,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:35,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:35" (1/1) ... [2022-02-20 19:54:35,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff1b802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:35, skipping insertion in model container [2022-02-20 19:54:35,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:35" (1/1) ... [2022-02-20 19:54:35,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:35,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:36,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c[913,926] [2022-02-20 19:54:36,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c[5994,6007] [2022-02-20 19:54:36,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:36,227 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:36,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c[913,926] [2022-02-20 19:54:36,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.11.cil-2.c[5994,6007] [2022-02-20 19:54:36,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:36,347 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:36,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36 WrapperNode [2022-02-20 19:54:36,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:36,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:36,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:36,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:36,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,430 INFO L137 Inliner]: procedures = 71, calls = 82, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 959 [2022-02-20 19:54:36,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:36,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:36,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:36,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:36,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:36,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:36,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:36,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:36,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:36,544 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) [2022-02-20 19:54:36,547 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 [2022-02-20 19:54:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:36,581 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:36,582 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 19:54:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:36,722 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:36,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:37,586 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:37,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:37,606 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-02-20 19:54:37,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:37 BoogieIcfgContainer [2022-02-20 19:54:37,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:37,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:37,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:37,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:35" (1/3) ... [2022-02-20 19:54:37,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d0c4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:37, skipping insertion in model container [2022-02-20 19:54:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36" (2/3) ... [2022-02-20 19:54:37,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d0c4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:37, skipping insertion in model container [2022-02-20 19:54:37,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:37" (3/3) ... [2022-02-20 19:54:37,616 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.11.cil-2.c [2022-02-20 19:54:37,620 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:37,620 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:37,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:37,667 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:54:37,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 430 states, 386 states have (on average 1.645077720207254) internal successors, (635), 392 states have internal predecessors, (635), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-20 19:54:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:37,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:37,706 INFO L514 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] [2022-02-20 19:54:37,706 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1762413941, now seen corresponding path program 1 times [2022-02-20 19:54:37,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:54:37,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436978136] [2022-02-20 19:54:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:37,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:54:37,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:54:37,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 19:54:37,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 19:54:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:37,878 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:38,036 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 19:54:38,037 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:38,038 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:38,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:38,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 19:54:38,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 19:54:38,257 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 19:54:38,259 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:38,317 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:38,317 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 19:54:38,321 INFO L158 Benchmark]: Toolchain (without parser) took 2536.76ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 41.9MB in the beginning and 31.5MB in the end (delta: 10.4MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2022-02-20 19:54:38,321 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 48.2MB. Free memory was 30.0MB in the beginning and 29.9MB in the end (delta: 32.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:38,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.21ms. Allocated memory is still 58.7MB. Free memory was 41.7MB in the beginning and 27.1MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:38,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.91ms. Allocated memory is still 58.7MB. Free memory was 27.1MB in the beginning and 37.4MB in the end (delta: -10.3MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:38,323 INFO L158 Benchmark]: Boogie Preprocessor took 78.56ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 32.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:38,323 INFO L158 Benchmark]: RCFGBuilder took 1098.03ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 32.7MB in the beginning and 44.9MB in the end (delta: -12.2MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:38,324 INFO L158 Benchmark]: TraceAbstraction took 709.10ms. Allocated memory is still 75.5MB. Free memory was 44.1MB in the beginning and 31.5MB in the end (delta: 12.6MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:38,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 48.2MB. Free memory was 30.0MB in the beginning and 29.9MB in the end (delta: 32.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.21ms. Allocated memory is still 58.7MB. Free memory was 41.7MB in the beginning and 27.1MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.91ms. Allocated memory is still 58.7MB. Free memory was 27.1MB in the beginning and 37.4MB in the end (delta: -10.3MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.56ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 32.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1098.03ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 32.7MB in the beginning and 44.9MB in the end (delta: -12.2MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * TraceAbstraction took 709.10ms. Allocated memory is still 75.5MB. Free memory was 44.1MB in the beginning and 31.5MB in the end (delta: 12.6MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * 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 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 19:54:38,372 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator