./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.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/Problem05_label42+token_ring.13.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 216404335c43b82447a03ad9d88ac8bc18e7528b04f40169d87fb26955d8753c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:46:39,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:46:39,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:46:39,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:46:39,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:46:39,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:46:39,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:46:39,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:46:39,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:46:39,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:46:39,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:46:39,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:46:39,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:46:39,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:46:39,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:46:39,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:46:39,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:46:39,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:46:39,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:46:39,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:46:39,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:46:39,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:46:39,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:46:39,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:46:39,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:46:39,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:46:39,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:46:39,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:46:39,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:46:39,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:46:39,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:46:39,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:46:39,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:46:39,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:46:39,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:46:39,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:46:39,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:46:39,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:46:39,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:46:39,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:46:39,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:46:39,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:46:39,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:46:39,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:46:39,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:46:39,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:46:39,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:46:39,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:46:39,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:46:39,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:46:39,540 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:46:39,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:46:39,540 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:46:39,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:46:39,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:46:39,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:46:39,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:46:39,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:46:39,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:46:39,541 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:46:39,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:46:39,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:46:39,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:46:39,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:46:39,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:46:39,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:46:39,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:39,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:46:39,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:46:39,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:46:39,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:46:39,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:46:39,544 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:46:39,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:46:39,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:46:39,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:46:39,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216404335c43b82447a03ad9d88ac8bc18e7528b04f40169d87fb26955d8753c [2021-12-15 11:46:39,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:46:39,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:46:39,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:46:39,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:46:39,803 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:46:39,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-2.c [2021-12-15 11:46:39,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ffd1472/42736a82902a42579b2cb508f64ec244/FLAGac89ee15f [2021-12-15 11:46:40,720 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:46:40,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-2.c [2021-12-15 11:46:40,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ffd1472/42736a82902a42579b2cb508f64ec244/FLAGac89ee15f [2021-12-15 11:46:40,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ffd1472/42736a82902a42579b2cb508f64ec244 [2021-12-15 11:46:40,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:46:40,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:46:40,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:40,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:46:40,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:46:40,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:40" (1/1) ... [2021-12-15 11:46:40,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360712c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:40, skipping insertion in model container [2021-12-15 11:46:40,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:40" (1/1) ... [2021-12-15 11:46:40,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:46:41,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:46:42,581 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_label42+token_ring.13.cil-2.c[378560,378573] [2021-12-15 11:46:42,607 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_label42+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:46:42,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:42,890 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:46:43,635 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_label42+token_ring.13.cil-2.c[378560,378573] [2021-12-15 11:46:43,642 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_label42+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:46:43,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:43,730 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:46:43,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43 WrapperNode [2021-12-15 11:46:43,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:43,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:43,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:46:43,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:46:43,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:43,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,249 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-15 11:46:44,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:44,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:46:44,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:46:44,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:46:44,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:46:44,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:46:44,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:46:44,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:46:44,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (1/1) ... [2021-12-15 11:46:44,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:44,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:46:44,785 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 11:46:44,823 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 11:46:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:46:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:46:44,854 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:46:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:46:44,854 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:46:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:46:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:46:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:46:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:46:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:46:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:46:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:46:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:46:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:46:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:46:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:46:45,053 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:46:45,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:46:51,120 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:46:51,151 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:46:51,151 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:46:51,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:51 BoogieIcfgContainer [2021-12-15 11:46:51,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:46:51,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:46:51,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:46:51,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:46:51,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:46:40" (1/3) ... [2021-12-15 11:46:51,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bee39da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:51, skipping insertion in model container [2021-12-15 11:46:51,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:43" (2/3) ... [2021-12-15 11:46:51,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bee39da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:51, skipping insertion in model container [2021-12-15 11:46:51,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:51" (3/3) ... [2021-12-15 11:46:51,168 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.13.cil-2.c [2021-12-15 11:46:51,172 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:46:51,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:46:51,222 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:46:51,229 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 11:46:51,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:46:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-15 11:46:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-15 11:46:51,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:46:51,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:51,312 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:46:51,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:46:51,317 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-15 11:46:51,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:46:51,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226566310] [2021-12-15 11:46:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:46:51,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:46:51,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:46:51,383 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 11:46:51,388 INFO L158 Benchmark]: Toolchain (without parser) took 10499.93ms. Allocated memory was 90.2MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 41.3MB in the beginning and 749.1MB in the end (delta: -707.7MB). Peak memory consumption was 299.3MB. Max. memory is 16.1GB. [2021-12-15 11:46:51,389 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 40.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:46:51,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2840.76ms. Allocated memory was 90.2MB in the beginning and 304.1MB in the end (delta: 213.9MB). Free memory was 41.0MB in the beginning and 195.7MB in the end (delta: -154.7MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. [2021-12-15 11:46:51,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 518.45ms. Allocated memory is still 304.1MB. Free memory was 195.7MB in the beginning and 163.3MB in the end (delta: 32.3MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. [2021-12-15 11:46:51,391 INFO L158 Benchmark]: Boogie Preprocessor took 466.49ms. Allocated memory is still 304.1MB. Free memory was 163.3MB in the beginning and 142.0MB in the end (delta: 21.3MB). Peak memory consumption was 79.1MB. Max. memory is 16.1GB. [2021-12-15 11:46:51,396 INFO L158 Benchmark]: RCFGBuilder took 6439.37ms. Allocated memory was 304.1MB in the beginning and 1.1GB in the end (delta: 794.8MB). Free memory was 142.0MB in the beginning and 772.1MB in the end (delta: -630.1MB). Peak memory consumption was 331.3MB. Max. memory is 16.1GB. [2021-12-15 11:46:51,396 INFO L158 Benchmark]: TraceAbstraction took 226.18ms. Allocated memory is still 1.1GB. Free memory was 771.1MB in the beginning and 749.1MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:46:51,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 40.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2840.76ms. Allocated memory was 90.2MB in the beginning and 304.1MB in the end (delta: 213.9MB). Free memory was 41.0MB in the beginning and 195.7MB in the end (delta: -154.7MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 518.45ms. Allocated memory is still 304.1MB. Free memory was 195.7MB in the beginning and 163.3MB in the end (delta: 32.3MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 466.49ms. Allocated memory is still 304.1MB. Free memory was 163.3MB in the beginning and 142.0MB in the end (delta: 21.3MB). Peak memory consumption was 79.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6439.37ms. Allocated memory was 304.1MB in the beginning and 1.1GB in the end (delta: 794.8MB). Free memory was 142.0MB in the beginning and 772.1MB in the end (delta: -630.1MB). Peak memory consumption was 331.3MB. Max. memory is 16.1GB. * TraceAbstraction took 226.18ms. Allocated memory is still 1.1GB. Free memory was 771.1MB in the beginning and 749.1MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. 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 11:46:51,435 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_label42+token_ring.13.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 216404335c43b82447a03ad9d88ac8bc18e7528b04f40169d87fb26955d8753c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:46:53,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:46:53,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:46:53,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:46:53,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:46:53,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:46:53,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:46:53,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:46:53,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:46:53,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:46:53,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:46:53,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:46:53,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:46:53,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:46:53,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:46:53,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:46:53,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:46:53,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:46:53,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:46:53,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:46:53,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:46:53,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:46:53,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:46:53,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:46:53,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:46:53,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:46:53,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:46:53,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:46:53,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:46:53,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:46:53,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:46:53,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:46:53,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:46:53,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:46:53,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:46:53,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:46:53,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:46:53,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:46:53,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:46:53,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:46:53,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:46:53,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:46:53,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:46:53,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:46:53,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:46:53,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:46:53,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:46:53,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:46:53,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:46:53,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:46:53,488 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:46:53,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:46:53,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:46:53,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:46:53,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:46:53,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:46:53,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:46:53,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:46:53,490 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:46:53,491 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:46:53,491 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:46:53,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:46:53,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:46:53,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:46:53,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:46:53,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:46:53,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:46:53,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:46:53,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:53,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:46:53,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:46:53,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:46:53,494 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:46:53,494 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:46:53,494 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:46:53,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:46:53,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:46:53,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:46:53,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:46:53,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216404335c43b82447a03ad9d88ac8bc18e7528b04f40169d87fb26955d8753c [2021-12-15 11:46:53,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:46:53,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:46:53,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:46:53,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:46:53,839 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:46:53,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-2.c [2021-12-15 11:46:53,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9aea25414/b45af4100b9c462c9e356b3238312246/FLAG6feaaf37f [2021-12-15 11:46:54,776 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:46:54,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-2.c [2021-12-15 11:46:54,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9aea25414/b45af4100b9c462c9e356b3238312246/FLAG6feaaf37f [2021-12-15 11:46:54,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9aea25414/b45af4100b9c462c9e356b3238312246 [2021-12-15 11:46:54,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:46:54,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:46:54,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:54,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:46:54,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:46:54,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:54" (1/1) ... [2021-12-15 11:46:54,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76385d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:54, skipping insertion in model container [2021-12-15 11:46:54,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:54" (1/1) ... [2021-12-15 11:46:54,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:46:55,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:46:56,657 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_label42+token_ring.13.cil-2.c[378560,378573] [2021-12-15 11:46:56,681 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_label42+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:46:56,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:56,954 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:46:57,831 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_label42+token_ring.13.cil-2.c[378560,378573] [2021-12-15 11:46:57,838 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_label42+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:46:57,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:57,933 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:46:57,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57 WrapperNode [2021-12-15 11:46:57,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:57,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:57,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:46:57,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:46:57,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,384 INFO L137 Inliner]: procedures = 71, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13213 [2021-12-15 11:46:58,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:58,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:46:58,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:46:58,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:46:58,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:46:58,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:46:58,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:46:58,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:46:58,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:58,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:58,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:46:58,945 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 11:46:59,012 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 11:46:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:46:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:46:59,068 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:46:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:46:59,068 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:46:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:46:59,069 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:46:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:46:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:46:59,069 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:46:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:46:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:46:59,070 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:46:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:46:59,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:46:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:46:59,320 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:46:59,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:07,332 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:07,360 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:07,361 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:47:07,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:07 BoogieIcfgContainer [2021-12-15 11:47:07,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:07,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:07,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:07,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:07,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:46:54" (1/3) ... [2021-12-15 11:47:07,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717bae93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:07, skipping insertion in model container [2021-12-15 11:47:07,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57" (2/3) ... [2021-12-15 11:47:07,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717bae93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:07, skipping insertion in model container [2021-12-15 11:47:07,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:07" (3/3) ... [2021-12-15 11:47:07,373 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.13.cil-2.c [2021-12-15 11:47:07,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:07,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:07,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:07,431 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 11:47:07,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-15 11:47:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-15 11:47:07,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:07,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:07,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:07,503 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-15 11:47:07,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:47:07,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142867049] [2021-12-15 11:47:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:07,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:47:07,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:47:07,517 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 11:47:07,565 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 11:47:07,601 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 11:47:07,800 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 11:47:07,801 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 11:47:07,805 INFO L158 Benchmark]: Toolchain (without parser) took 12866.61ms. Allocated memory was 79.7MB in the beginning and 1.0GB in the end (delta: 926.9MB). Free memory was 47.7MB in the beginning and 542.4MB in the end (delta: -494.7MB). Peak memory consumption was 430.1MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,805 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:07,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2992.42ms. Allocated memory was 79.7MB in the beginning and 239.1MB in the end (delta: 159.4MB). Free memory was 47.4MB in the beginning and 128.2MB in the end (delta: -80.8MB). Peak memory consumption was 111.3MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 451.32ms. Allocated memory is still 239.1MB. Free memory was 128.2MB in the beginning and 93.1MB in the end (delta: 35.1MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,807 INFO L158 Benchmark]: Boogie Preprocessor took 465.47ms. Allocated memory was 239.1MB in the beginning and 503.3MB in the end (delta: 264.2MB). Free memory was 93.1MB in the beginning and 345.3MB in the end (delta: -252.2MB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,808 INFO L158 Benchmark]: RCFGBuilder took 8513.63ms. Allocated memory was 503.3MB in the beginning and 1.0GB in the end (delta: 503.3MB). Free memory was 345.3MB in the beginning and 569.6MB in the end (delta: -224.3MB). Peak memory consumption was 285.2MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,808 INFO L158 Benchmark]: TraceAbstraction took 436.26ms. Allocated memory is still 1.0GB. Free memory was 569.6MB in the beginning and 542.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2992.42ms. Allocated memory was 79.7MB in the beginning and 239.1MB in the end (delta: 159.4MB). Free memory was 47.4MB in the beginning and 128.2MB in the end (delta: -80.8MB). Peak memory consumption was 111.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 451.32ms. Allocated memory is still 239.1MB. Free memory was 128.2MB in the beginning and 93.1MB in the end (delta: 35.1MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 465.47ms. Allocated memory was 239.1MB in the beginning and 503.3MB in the end (delta: 264.2MB). Free memory was 93.1MB in the beginning and 345.3MB in the end (delta: -252.2MB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. * RCFGBuilder took 8513.63ms. Allocated memory was 503.3MB in the beginning and 1.0GB in the end (delta: 503.3MB). Free memory was 345.3MB in the beginning and 569.6MB in the end (delta: -224.3MB). Peak memory consumption was 285.2MB. Max. memory is 16.1GB. * TraceAbstraction took 436.26ms. Allocated memory is still 1.0GB. Free memory was 569.6MB in the beginning and 542.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. 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 11:47:07,840 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