./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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_3.cil+token_ring.09.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 20da2548babe3ea7ba69c8856235b685b3dad9dcce2cbb8d7159e2037477f2fb --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:16:01,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:16:01,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:16:01,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:16:01,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:16:01,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:16:01,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:16:01,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:16:01,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:16:01,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:16:01,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:16:01,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:16:01,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:16:01,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:16:01,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:16:01,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:16:01,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:16:01,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:16:01,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:16:01,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:16:01,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:16:01,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:16:01,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:16:01,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:16:01,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:16:01,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:16:01,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:16:01,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:16:01,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:16:01,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:16:01,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:16:01,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:16:01,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:16:01,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:16:01,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:16:01,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:16:01,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:16:01,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:16:01,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:16:01,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:16:01,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:16:01,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:16:01,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:16:01,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:16:01,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:16:01,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:16:01,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:16:01,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:16:01,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:16:01,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:16:01,772 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:16:01,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:16:01,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:16:01,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:16:01,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:16:01,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:16:01,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:16:01,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:16:01,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:16:01,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:16:01,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:16:01,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:16:01,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:16:01,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:16:01,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:16:01,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:16:01,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:01,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:16:01,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:16:01,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:16:01,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:16:01,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:16:01,777 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:16:01,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:16:01,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:16:01,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:16:01,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20da2548babe3ea7ba69c8856235b685b3dad9dcce2cbb8d7159e2037477f2fb [2021-12-15 12:16:02,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:16:02,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:16:02,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:16:02,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:16:02,056 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:16:02,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c [2021-12-15 12:16:02,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c58ecebed/41d59e22c8754d3ead8d96f75b4e1715/FLAGa85194c39 [2021-12-15 12:16:02,611 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:16:02,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c [2021-12-15 12:16:02,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c58ecebed/41d59e22c8754d3ead8d96f75b4e1715/FLAGa85194c39 [2021-12-15 12:16:02,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c58ecebed/41d59e22c8754d3ead8d96f75b4e1715 [2021-12-15 12:16:02,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:16:02,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:16:02,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:02,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:16:02,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:16:02,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:02" (1/1) ... [2021-12-15 12:16:02,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726f857b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:02, skipping insertion in model container [2021-12-15 12:16:02,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:02" (1/1) ... [2021-12-15 12:16:02,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:16:03,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:16:03,224 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_3.cil+token_ring.09.cil-2.c[911,924] [2021-12-15 12:16:03,307 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_3.cil+token_ring.09.cil-2.c[8416,8429] [2021-12-15 12:16:03,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:03,426 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:16:03,437 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_3.cil+token_ring.09.cil-2.c[911,924] [2021-12-15 12:16:03,459 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_3.cil+token_ring.09.cil-2.c[8416,8429] [2021-12-15 12:16:03,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:03,504 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:16:03,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03 WrapperNode [2021-12-15 12:16:03,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:03,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:03,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:16:03,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:16:03,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,569 INFO L137 Inliner]: procedures = 73, calls = 89, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 909 [2021-12-15 12:16:03,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:03,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:16:03,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:16:03,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:16:03,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:16:03,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:16:03,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:16:03,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:16:03,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (1/1) ... [2021-12-15 12:16:03,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:03,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:16:03,689 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) [2021-12-15 12:16:03,691 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 [2021-12-15 12:16:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:16:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:16:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:16:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:16:03,725 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:16:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:16:03,725 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:16:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:16:03,726 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:16:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:16:03,726 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:16:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:16:03,726 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:16:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:16:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:16:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:16:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:16:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:16:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:16:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:16:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:16:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:16:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:16:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:16:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:16:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:16:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:16:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:16:03,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:16:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:16:03,729 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:16:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:16:03,729 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-15 12:16:03,730 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-15 12:16:03,885 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:16:03,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:16:04,512 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-15 12:16:04,512 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2021-12-15 12:16:04,559 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:16:04,568 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:16:04,570 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-15 12:16:04,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:04 BoogieIcfgContainer [2021-12-15 12:16:04,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:16:04,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:16:04,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:16:04,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:16:04,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:16:02" (1/3) ... [2021-12-15 12:16:04,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74051068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:04, skipping insertion in model container [2021-12-15 12:16:04,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:03" (2/3) ... [2021-12-15 12:16:04,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74051068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:04, skipping insertion in model container [2021-12-15 12:16:04,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:04" (3/3) ... [2021-12-15 12:16:04,581 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.09.cil-2.c [2021-12-15 12:16:04,585 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:16:04,585 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:16:04,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:16:04,626 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 [2021-12-15 12:16:04,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:16:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 432 states, 373 states have (on average 1.6300268096514745) internal successors, (608), 381 states have internal predecessors, (608), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-15 12:16:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 12:16:04,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:16:04,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:16:04,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:16:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:16:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash 140273204, now seen corresponding path program 1 times [2021-12-15 12:16:04,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:16:04,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205985756] [2021-12-15 12:16:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:16:04,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:16:04,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:16:04,730 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 12:16:04,735 INFO L158 Benchmark]: Toolchain (without parser) took 1794.79ms. Allocated memory is still 109.1MB. Free memory was 78.1MB in the beginning and 56.2MB in the end (delta: 21.9MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:04,735 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:04,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.01ms. Allocated memory is still 109.1MB. Free memory was 78.1MB in the beginning and 73.5MB in the end (delta: 4.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:04,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.19ms. Allocated memory is still 109.1MB. Free memory was 73.5MB in the beginning and 69.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:04,737 INFO L158 Benchmark]: Boogie Preprocessor took 49.71ms. Allocated memory is still 109.1MB. Free memory was 69.3MB in the beginning and 65.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:04,737 INFO L158 Benchmark]: RCFGBuilder took 945.51ms. Allocated memory is still 109.1MB. Free memory was 65.1MB in the beginning and 67.9MB in the end (delta: -2.8MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2021-12-15 12:16:04,738 INFO L158 Benchmark]: TraceAbstraction took 157.23ms. Allocated memory is still 109.1MB. Free memory was 67.3MB in the beginning and 56.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 12:16:04,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.01ms. Allocated memory is still 109.1MB. Free memory was 78.1MB in the beginning and 73.5MB in the end (delta: 4.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.19ms. Allocated memory is still 109.1MB. Free memory was 73.5MB in the beginning and 69.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.71ms. Allocated memory is still 109.1MB. Free memory was 69.3MB in the beginning and 65.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 945.51ms. Allocated memory is still 109.1MB. Free memory was 65.1MB in the beginning and 67.9MB in the end (delta: -2.8MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * TraceAbstraction took 157.23ms. Allocated memory is still 109.1MB. Free memory was 67.3MB in the beginning and 56.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:16:04,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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 -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_3.cil+token_ring.09.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 20da2548babe3ea7ba69c8856235b685b3dad9dcce2cbb8d7159e2037477f2fb --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:16:06,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:16:06,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:16:06,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:16:06,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:16:06,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:16:06,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:16:06,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:16:06,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:16:06,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:16:06,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:16:06,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:16:06,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:16:06,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:16:06,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:16:06,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:16:06,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:16:06,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:16:06,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:16:06,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:16:06,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:16:06,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:16:06,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:16:06,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:16:06,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:16:06,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:16:06,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:16:06,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:16:06,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:16:06,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:16:06,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:16:06,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:16:06,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:16:06,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:16:06,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:16:06,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:16:06,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:16:06,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:16:06,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:16:06,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:16:06,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:16:06,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:16:06,908 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:16:06,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:16:06,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:16:06,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:16:06,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:16:06,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:16:06,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:16:06,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:16:06,913 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:16:06,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:16:06,914 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:16:06,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:16:06,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:16:06,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:16:06,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:16:06,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:16:06,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:16:06,915 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:16:06,916 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:16:06,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:16:06,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:16:06,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:16:06,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:16:06,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:16:06,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:16:06,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:16:06,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:06,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:16:06,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:16:06,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:16:06,918 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:16:06,918 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:16:06,919 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:16:06,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:16:06,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:16:06,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:16:06,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:16:06,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20da2548babe3ea7ba69c8856235b685b3dad9dcce2cbb8d7159e2037477f2fb [2021-12-15 12:16:07,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:16:07,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:16:07,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:16:07,271 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:16:07,272 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:16:07,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c [2021-12-15 12:16:07,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a150f5a9e/3a1b75316bdc4827b45c2727a40ff05c/FLAG69c06a6bc [2021-12-15 12:16:07,837 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:16:07,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c [2021-12-15 12:16:07,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a150f5a9e/3a1b75316bdc4827b45c2727a40ff05c/FLAG69c06a6bc [2021-12-15 12:16:08,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a150f5a9e/3a1b75316bdc4827b45c2727a40ff05c [2021-12-15 12:16:08,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:16:08,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:16:08,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:08,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:16:08,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:16:08,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2865912b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08, skipping insertion in model container [2021-12-15 12:16:08,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:16:08,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:16:08,387 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_3.cil+token_ring.09.cil-2.c[911,924] [2021-12-15 12:16:08,486 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_3.cil+token_ring.09.cil-2.c[8416,8429] [2021-12-15 12:16:08,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:08,635 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:16:08,644 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_3.cil+token_ring.09.cil-2.c[911,924] [2021-12-15 12:16:08,670 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_3.cil+token_ring.09.cil-2.c[8416,8429] [2021-12-15 12:16:08,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:08,754 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:16:08,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08 WrapperNode [2021-12-15 12:16:08,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:08,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:08,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:16:08,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:16:08,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,844 INFO L137 Inliner]: procedures = 74, calls = 89, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 874 [2021-12-15 12:16:08,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:08,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:16:08,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:16:08,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:16:08,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:16:08,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:16:08,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:16:08,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:16:08,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:08,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:16:08,942 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) [2021-12-15 12:16:08,950 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 [2021-12-15 12:16:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:16:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:16:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:16:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:16:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:16:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:16:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:16:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:16:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:16:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:16:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:16:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:16:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:16:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:16:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:16:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:16:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:16:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:16:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:16:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:16:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:16:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:16:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:16:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:16:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:16:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:16:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:16:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:16:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:16:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:16:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:16:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:16:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-15 12:16:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-15 12:16:09,141 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:16:09,143 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:16:09,927 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2021-12-15 12:16:09,927 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2021-12-15 12:16:10,007 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:16:10,020 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:16:10,021 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-15 12:16:10,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:10 BoogieIcfgContainer [2021-12-15 12:16:10,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:16:10,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:16:10,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:16:10,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:16:10,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:16:08" (1/3) ... [2021-12-15 12:16:10,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fd8b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:10, skipping insertion in model container [2021-12-15 12:16:10,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (2/3) ... [2021-12-15 12:16:10,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fd8b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:10, skipping insertion in model container [2021-12-15 12:16:10,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:10" (3/3) ... [2021-12-15 12:16:10,033 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.09.cil-2.c [2021-12-15 12:16:10,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:16:10,039 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:16:10,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:16:10,089 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 [2021-12-15 12:16:10,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:16:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 432 states, 373 states have (on average 1.6300268096514745) internal successors, (608), 381 states have internal predecessors, (608), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-15 12:16:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 12:16:10,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:16:10,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:16:10,135 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:16:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:16:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash 140273204, now seen corresponding path program 1 times [2021-12-15 12:16:10,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:16:10,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707016676] [2021-12-15 12:16:10,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:16:10,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:16:10,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:16:10,163 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) [2021-12-15 12:16:10,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 12:16:10,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 12:16:10,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 12:16:10,445 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 12:16:10,452 INFO L158 Benchmark]: Toolchain (without parser) took 2272.40ms. Allocated memory was 48.2MB in the beginning and 71.3MB in the end (delta: 23.1MB). Free memory was 23.3MB in the beginning and 42.6MB in the end (delta: -19.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,453 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 48.2MB. Free memory was 30.9MB in the beginning and 30.8MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:10,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.93ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.0MB in the beginning and 29.7MB in the end (delta: -6.6MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.08ms. Allocated memory is still 58.7MB. Free memory was 29.5MB in the beginning and 39.1MB in the end (delta: -9.6MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,455 INFO L158 Benchmark]: Boogie Preprocessor took 53.39ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 34.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,456 INFO L158 Benchmark]: RCFGBuilder took 1117.22ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.8MB in the beginning and 36.1MB in the end (delta: -1.3MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,456 INFO L158 Benchmark]: TraceAbstraction took 424.74ms. Allocated memory is still 71.3MB. Free memory was 35.8MB in the beginning and 42.6MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:10,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 48.2MB. Free memory was 30.9MB in the beginning and 30.8MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.93ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.0MB in the beginning and 29.7MB in the end (delta: -6.6MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.08ms. Allocated memory is still 58.7MB. Free memory was 29.5MB in the beginning and 39.1MB in the end (delta: -9.6MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.39ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 34.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1117.22ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.8MB in the beginning and 36.1MB in the end (delta: -1.3MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 424.74ms. Allocated memory is still 71.3MB. Free memory was 35.8MB in the beginning and 42.6MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:16:10,498 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: UnsupportedOperationException: Set is immutable