./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.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/Problem05_label44+token_ring.07.cil-1.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 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:47:49,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:47:49,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:47:49,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:47:49,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:47:49,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:47:49,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:47:49,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:47:49,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:47:49,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:47:49,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:47:49,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:47:49,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:47:49,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:47:49,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:47:49,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:47:49,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:47:49,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:47:49,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:47:49,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:47:49,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:47:49,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:47:49,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:47:49,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:47:49,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:47:49,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:47:49,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:47:49,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:47:49,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:47:49,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:47:49,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:47:49,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:47:49,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:47:49,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:47:49,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:47:49,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:47:49,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:47:49,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:47:49,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:47:49,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:47:49,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:47:49,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:47:49,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:47:49,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:47:49,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:47:49,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:47:49,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:47:49,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:47:49,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:47:49,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:47:49,643 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:47:49,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:47:49,644 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:47:49,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:47:49,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:47:49,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:47:49,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:47:49,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:47:49,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:47:49,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:47:49,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:47:49,646 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:47:49,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:47:49,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:47:49,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:47:49,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:47:49,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:49,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:47:49,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:47:49,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:47:49,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:47:49,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:47:49,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:47:49,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:47:49,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:47:49,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:47:49,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 [2021-12-15 11:47:49,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:47:49,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:47:49,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:47:49,881 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:47:49,882 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:47:49,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2021-12-15 11:47:49,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc2f70a0/f47f7ceda14c4868834780151a2e120d/FLAG6bcd7770d [2021-12-15 11:47:50,633 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:47:50,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2021-12-15 11:47:50,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc2f70a0/f47f7ceda14c4868834780151a2e120d/FLAG6bcd7770d [2021-12-15 11:47:50,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc2f70a0/f47f7ceda14c4868834780151a2e120d [2021-12-15 11:47:50,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:47:50,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:47:50,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:50,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:47:50,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:47:50,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:50,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf4d7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50, skipping insertion in model container [2021-12-15 11:47:50,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:50,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:47:51,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:47:52,253 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/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2021-12-15 11:47:52,279 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/Problem05_label44+token_ring.07.cil-1.c[383339,383352] [2021-12-15 11:47:52,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:52,624 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:47:53,331 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/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2021-12-15 11:47:53,337 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/Problem05_label44+token_ring.07.cil-1.c[383339,383352] [2021-12-15 11:47:53,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:53,434 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:47:53,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53 WrapperNode [2021-12-15 11:47:53,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:53,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:53,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:47:53,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:47:53,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:53,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:53,682 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-15 11:47:53,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:53,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:47:53,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:47:53,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:47:53,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:53,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:53,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:53,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:53,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:53,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:54,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:54,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:47:54,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:47:54,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:47:54,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:47:54,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (1/1) ... [2021-12-15 11:47:54,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:54,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:47:54,223 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 11:47:54,252 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 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:47:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:47:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:47:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:47:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:47:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:47:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:47:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:47:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:47:54,373 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:47:54,374 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:59,181 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:59,200 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:59,200 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-15 11:47:59,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:59 BoogieIcfgContainer [2021-12-15 11:47:59,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:59,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:59,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:59,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:59,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:47:50" (1/3) ... [2021-12-15 11:47:59,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394d3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:59, skipping insertion in model container [2021-12-15 11:47:59,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:53" (2/3) ... [2021-12-15 11:47:59,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394d3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:59, skipping insertion in model container [2021-12-15 11:47:59,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:59" (3/3) ... [2021-12-15 11:47:59,209 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.07.cil-1.c [2021-12-15 11:47:59,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:59,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:59,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:59,324 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 11:47:59,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:59,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-15 11:47:59,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-15 11:47:59,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:59,371 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, 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 11:47:59,372 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:59,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:59,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-15 11:47:59,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:47:59,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039171174] [2021-12-15 11:47:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:59,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:47:59,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:47:59,420 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 11:47:59,424 INFO L158 Benchmark]: Toolchain (without parser) took 8460.45ms. Allocated memory was 115.3MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 74.6MB in the beginning and 1.0GB in the end (delta: -941.3MB). Peak memory consumption was 169.3MB. Max. memory is 16.1GB. [2021-12-15 11:47:59,424 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:59,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2470.93ms. Allocated memory was 115.3MB in the beginning and 339.7MB in the end (delta: 224.4MB). Free memory was 74.2MB in the beginning and 243.6MB in the end (delta: -169.4MB). Peak memory consumption was 159.4MB. Max. memory is 16.1GB. [2021-12-15 11:47:59,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 247.03ms. Allocated memory is still 339.7MB. Free memory was 243.6MB in the beginning and 167.0MB in the end (delta: 76.5MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2021-12-15 11:47:59,426 INFO L158 Benchmark]: Boogie Preprocessor took 466.27ms. Allocated memory is still 339.7MB. Free memory was 167.0MB in the beginning and 179.6MB in the end (delta: -12.6MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. [2021-12-15 11:47:59,426 INFO L158 Benchmark]: RCFGBuilder took 5053.49ms. Allocated memory was 339.7MB in the beginning and 679.5MB in the end (delta: 339.7MB). Free memory was 179.6MB in the beginning and 207.7MB in the end (delta: -28.1MB). Peak memory consumption was 312.7MB. Max. memory is 16.1GB. [2021-12-15 11:47:59,427 INFO L158 Benchmark]: TraceAbstraction took 218.29ms. Allocated memory was 679.5MB in the beginning and 1.2GB in the end (delta: 547.4MB). Free memory was 207.7MB in the beginning and 1.0GB in the end (delta: -808.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:59,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2470.93ms. Allocated memory was 115.3MB in the beginning and 339.7MB in the end (delta: 224.4MB). Free memory was 74.2MB in the beginning and 243.6MB in the end (delta: -169.4MB). Peak memory consumption was 159.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 247.03ms. Allocated memory is still 339.7MB. Free memory was 243.6MB in the beginning and 167.0MB in the end (delta: 76.5MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 466.27ms. Allocated memory is still 339.7MB. Free memory was 167.0MB in the beginning and 179.6MB in the end (delta: -12.6MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. * RCFGBuilder took 5053.49ms. Allocated memory was 339.7MB in the beginning and 679.5MB in the end (delta: 339.7MB). Free memory was 179.6MB in the beginning and 207.7MB in the end (delta: -28.1MB). Peak memory consumption was 312.7MB. Max. memory is 16.1GB. * TraceAbstraction took 218.29ms. Allocated memory was 679.5MB in the beginning and 1.2GB in the end (delta: 547.4MB). Free memory was 207.7MB in the beginning and 1.0GB in the end (delta: -808.2MB). 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 11:47:59,465 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 -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/Problem05_label44+token_ring.07.cil-1.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 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:48:01,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:48:01,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:48:01,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:48:01,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:48:01,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:48:01,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:48:01,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:48:01,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:48:01,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:48:01,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:48:01,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:48:01,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:48:01,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:48:01,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:48:01,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:48:01,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:48:01,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:48:01,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:48:01,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:48:01,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:48:01,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:48:01,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:48:01,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:48:01,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:48:01,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:48:01,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:48:01,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:48:01,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:48:01,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:48:01,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:48:01,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:48:01,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:48:01,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:48:01,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:48:01,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:48:01,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:48:01,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:48:01,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:48:01,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:48:01,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:48:01,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:48:01,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:48:01,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:48:01,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:48:01,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:48:01,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:48:01,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:48:01,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:48:01,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:48:01,367 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:48:01,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:48:01,368 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:48:01,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:48:01,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:48:01,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:48:01,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:48:01,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:48:01,369 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:48:01,369 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:48:01,369 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:48:01,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:48:01,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:48:01,370 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:48:01,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:48:01,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:48:01,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:48:01,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:48:01,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:01,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:48:01,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:48:01,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:48:01,371 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:48:01,371 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:48:01,371 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:48:01,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:48:01,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:48:01,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:48:01,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:48:01,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 [2021-12-15 11:48:01,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:48:01,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:48:01,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:48:01,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:48:01,658 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:48:01,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2021-12-15 11:48:01,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c5d1d11/30ef2fe36c304e808939e1a70f7e0859/FLAG25ce79ce7 [2021-12-15 11:48:02,429 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:48:02,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2021-12-15 11:48:02,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c5d1d11/30ef2fe36c304e808939e1a70f7e0859/FLAG25ce79ce7 [2021-12-15 11:48:02,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c5d1d11/30ef2fe36c304e808939e1a70f7e0859 [2021-12-15 11:48:02,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:48:02,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:48:02,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:02,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:48:02,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:48:02,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:02" (1/1) ... [2021-12-15 11:48:02,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0c503d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:02, skipping insertion in model container [2021-12-15 11:48:02,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:02" (1/1) ... [2021-12-15 11:48:02,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:48:03,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:48:04,435 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/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2021-12-15 11:48:04,458 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/Problem05_label44+token_ring.07.cil-1.c[383339,383352] [2021-12-15 11:48:04,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:04,630 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:48:05,253 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/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2021-12-15 11:48:05,258 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/Problem05_label44+token_ring.07.cil-1.c[383339,383352] [2021-12-15 11:48:05,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:05,316 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:48:05,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05 WrapperNode [2021-12-15 11:48:05,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:05,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:05,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:48:05,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:48:05,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:05,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:05,646 INFO L137 Inliner]: procedures = 59, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12877 [2021-12-15 11:48:05,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:05,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:48:05,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:48:05,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:48:05,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:05,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:05,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:05,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:05,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:05,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:05,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:06,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:48:06,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:48:06,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:48:06,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:48:06,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (1/1) ... [2021-12-15 11:48:06,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:06,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:48:06,172 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 11:48:06,260 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 11:48:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:48:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:48:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:48:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:48:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:48:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:48:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:48:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:48:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:48:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:48:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:48:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:48:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:48:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:48:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:48:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:48:06,361 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:48:06,362 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:48:12,821 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:48:12,845 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:48:12,845 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-15 11:48:12,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:12 BoogieIcfgContainer [2021-12-15 11:48:12,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:48:12,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:48:12,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:48:12,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:48:12,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:02" (1/3) ... [2021-12-15 11:48:12,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b0d85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:12, skipping insertion in model container [2021-12-15 11:48:12,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:05" (2/3) ... [2021-12-15 11:48:12,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b0d85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:12, skipping insertion in model container [2021-12-15 11:48:12,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:12" (3/3) ... [2021-12-15 11:48:12,856 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.07.cil-1.c [2021-12-15 11:48:12,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:48:12,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:48:12,902 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:48:12,908 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 11:48:12,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:48:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-15 11:48:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-15 11:48:12,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:48:12,960 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, 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 11:48:12,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:48:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:48:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-15 11:48:12,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:48:12,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993110674] [2021-12-15 11:48:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:48:12,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:48:12,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:48:12,975 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 11:48:12,976 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 11:48:13,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 11:48:13,217 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 11:48:13,217 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 11:48:13,221 INFO L158 Benchmark]: Toolchain (without parser) took 10256.77ms. Allocated memory was 71.3MB in the beginning and 832.6MB in the end (delta: 761.3MB). Free memory was 33.3MB in the beginning and 503.6MB in the end (delta: -470.4MB). Peak memory consumption was 290.9MB. Max. memory is 16.1GB. [2021-12-15 11:48:13,221 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory was 51.9MB in the beginning and 51.9MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:48:13,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2351.76ms. Allocated memory was 71.3MB in the beginning and 186.6MB in the end (delta: 115.3MB). Free memory was 33.1MB in the beginning and 73.8MB in the end (delta: -40.7MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. [2021-12-15 11:48:13,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 328.85ms. Allocated memory was 186.6MB in the beginning and 360.7MB in the end (delta: 174.1MB). Free memory was 73.8MB in the beginning and 207.9MB in the end (delta: -134.1MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2021-12-15 11:48:13,223 INFO L158 Benchmark]: Boogie Preprocessor took 477.14ms. Allocated memory is still 360.7MB. Free memory was 207.9MB in the beginning and 203.7MB in the end (delta: 4.2MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2021-12-15 11:48:13,223 INFO L158 Benchmark]: RCFGBuilder took 6725.10ms. Allocated memory was 360.7MB in the beginning and 832.6MB in the end (delta: 471.9MB). Free memory was 203.7MB in the beginning and 528.8MB in the end (delta: -325.1MB). Peak memory consumption was 348.1MB. Max. memory is 16.1GB. [2021-12-15 11:48:13,224 INFO L158 Benchmark]: TraceAbstraction took 368.22ms. Allocated memory is still 832.6MB. Free memory was 528.8MB in the beginning and 503.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:48:13,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory was 51.9MB in the beginning and 51.9MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2351.76ms. Allocated memory was 71.3MB in the beginning and 186.6MB in the end (delta: 115.3MB). Free memory was 33.1MB in the beginning and 73.8MB in the end (delta: -40.7MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 328.85ms. Allocated memory was 186.6MB in the beginning and 360.7MB in the end (delta: 174.1MB). Free memory was 73.8MB in the beginning and 207.9MB in the end (delta: -134.1MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 477.14ms. Allocated memory is still 360.7MB. Free memory was 207.9MB in the beginning and 203.7MB in the end (delta: 4.2MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * RCFGBuilder took 6725.10ms. Allocated memory was 360.7MB in the beginning and 832.6MB in the end (delta: 471.9MB). Free memory was 203.7MB in the beginning and 528.8MB in the end (delta: -325.1MB). Peak memory consumption was 348.1MB. Max. memory is 16.1GB. * TraceAbstraction took 368.22ms. Allocated memory is still 832.6MB. Free memory was 528.8MB in the beginning and 503.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. 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 11:48:13,254 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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable