./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/spaghetti.wvr.c --full-output -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/spaghetti.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 ca6c606e5644b41bb7a8f07e99c3eab28eb5762c -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf ........................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-05 22:03:11,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-05 22:03:11,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-05 22:03:11,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-05 22:03:11,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-05 22:03:11,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-05 22:03:11,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-05 22:03:11,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-05 22:03:11,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-05 22:03:11,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-05 22:03:11,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-05 22:03:11,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-05 22:03:11,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-05 22:03:11,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-05 22:03:11,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-05 22:03:11,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-05 22:03:11,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-05 22:03:11,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-05 22:03:11,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-05 22:03:11,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-05 22:03:11,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-05 22:03:11,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-05 22:03:11,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-05 22:03:11,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-05 22:03:11,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-05 22:03:11,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-05 22:03:11,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-05 22:03:11,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-05 22:03:11,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-05 22:03:11,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-05 22:03:11,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-05 22:03:11,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-05 22:03:11,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-05 22:03:11,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-05 22:03:11,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-05 22:03:11,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-05 22:03:11,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-05 22:03:11,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-05 22:03:11,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-05 22:03:11,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-05 22:03:11,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-05 22:03:11,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-05 22:03:11,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-05 22:03:11,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-05 22:03:11,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-05 22:03:11,557 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-05 22:03:11,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-05 22:03:11,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-05 22:03:11,560 INFO L138 SettingsManager]: * Use SBE=true [2021-10-05 22:03:11,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-05 22:03:11,561 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-05 22:03:11,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-05 22:03:11,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-05 22:03:11,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-05 22:03:11,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-05 22:03:11,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-05 22:03:11,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-05 22:03:11,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-05 22:03:11,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-05 22:03:11,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-05 22:03:11,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-05 22:03:11,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-05 22:03:11,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-05 22:03:11,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-05 22:03:11,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 22:03:11,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-05 22:03:11,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-05 22:03:11,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-05 22:03:11,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-05 22:03:11,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-05 22:03:11,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-05 22:03:11,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-05 22:03:11,567 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca6c606e5644b41bb7a8f07e99c3eab28eb5762c [2021-10-05 22:03:12,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-05 22:03:12,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-05 22:03:12,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-05 22:03:12,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-05 22:03:12,056 INFO L275 PluginConnector]: CDTParser initialized [2021-10-05 22:03:12,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-10-05 22:03:12,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507660f1e/390ba43f014a4b559fa4bb17d8b9bed2/FLAGd0374d321 [2021-10-05 22:03:12,771 INFO L306 CDTParser]: Found 1 translation units. [2021-10-05 22:03:12,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-10-05 22:03:12,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507660f1e/390ba43f014a4b559fa4bb17d8b9bed2/FLAGd0374d321 [2021-10-05 22:03:13,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507660f1e/390ba43f014a4b559fa4bb17d8b9bed2 [2021-10-05 22:03:13,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-05 22:03:13,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-05 22:03:13,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-05 22:03:13,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-05 22:03:13,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-05 22:03:13,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34668a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13, skipping insertion in model container [2021-10-05 22:03:13,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-05 22:03:13,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-05 22:03:13,486 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c[2315,2328] [2021-10-05 22:03:13,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 22:03:13,510 INFO L203 MainTranslator]: Completed pre-run [2021-10-05 22:03:13,567 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c[2315,2328] [2021-10-05 22:03:13,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 22:03:13,590 INFO L208 MainTranslator]: Completed translation [2021-10-05 22:03:13,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13 WrapperNode [2021-10-05 22:03:13,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-05 22:03:13,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-05 22:03:13,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-05 22:03:13,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-05 22:03:13,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-05 22:03:13,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-05 22:03:13,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-05 22:03:13,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-05 22:03:13,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-05 22:03:13,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-05 22:03:13,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-05 22:03:13,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-05 22:03:13,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (1/1) ... [2021-10-05 22:03:13,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 22:03:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:03:13,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-05 22:03:13,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-05 22:03:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-05 22:03:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-05 22:03:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-05 22:03:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-05 22:03:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-05 22:03:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-05 22:03:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-05 22:03:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-05 22:03:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-05 22:03:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-05 22:03:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-05 22:03:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-05 22:03:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-05 22:03:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-05 22:03:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-05 22:03:13,786 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-05 22:03:14,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-05 22:03:14,199 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-05 22:03:14,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:03:14 BoogieIcfgContainer [2021-10-05 22:03:14,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-05 22:03:14,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-05 22:03:14,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-05 22:03:14,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-05 22:03:14,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:03:13" (1/3) ... [2021-10-05 22:03:14,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10147093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:03:14, skipping insertion in model container [2021-10-05 22:03:14,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:03:13" (2/3) ... [2021-10-05 22:03:14,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10147093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:03:14, skipping insertion in model container [2021-10-05 22:03:14,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:03:14" (3/3) ... [2021-10-05 22:03:14,213 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2021-10-05 22:03:14,223 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-05 22:03:14,223 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-05 22:03:14,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-05 22:03:14,224 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-05 22:03:14,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,311 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,311 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,311 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,311 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,314 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,315 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,315 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,315 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,316 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,316 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,316 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,316 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,317 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,319 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,319 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,319 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,319 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,320 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,320 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,321 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,321 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,321 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,322 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,322 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,323 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,323 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,323 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,324 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,324 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,324 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,325 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,335 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,336 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,336 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:03:14,366 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-05 22:03:14,429 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-05 22:03:14,438 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-05 22:03:14,438 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-05 22:03:14,459 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-05 22:03:14,472 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 119 transitions, 270 flow [2021-10-05 22:03:14,476 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 119 transitions, 270 flow [2021-10-05 22:03:14,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 119 transitions, 270 flow [2021-10-05 22:03:14,562 INFO L129 PetriNetUnfolder]: 9/115 cut-off events. [2021-10-05 22:03:14,562 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-05 22:03:14,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 115 events. 9/115 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2021-10-05 22:03:14,584 INFO L116 LiptonReduction]: Number of co-enabled transitions 2718 [2021-10-05 22:03:18,524 INFO L131 LiptonReduction]: Checked pairs total: 4076 [2021-10-05 22:03:18,525 INFO L133 LiptonReduction]: Total number of compositions: 95 [2021-10-05 22:03:18,535 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 34 transitions, 100 flow [2021-10-05 22:03:18,577 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:03:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:03:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-05 22:03:18,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:03:18,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:03:18,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 22:03:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:03:18,605 INFO L82 PathProgramCache]: Analyzing trace with hash 314748107, now seen corresponding path program 1 times [2021-10-05 22:03:18,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:03:18,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985540396] [2021-10-05 22:03:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:03:18,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:03:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:03:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:03:19,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:03:19,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985540396] [2021-10-05 22:03:19,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985540396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:03:19,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 22:03:19,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 22:03:19,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567996666] [2021-10-05 22:03:19,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 22:03:19,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:03:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 22:03:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-05 22:03:19,039 INFO L87 Difference]: Start difference. First operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:03:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:03:19,158 INFO L93 Difference]: Finished difference Result 481 states and 1791 transitions. [2021-10-05 22:03:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 22:03:19,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-05 22:03:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:03:19,178 INFO L225 Difference]: With dead ends: 481 [2021-10-05 22:03:19,178 INFO L226 Difference]: Without dead ends: 256 [2021-10-05 22:03:19,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-05 22:03:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-05 22:03:19,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 206. [2021-10-05 22:03:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.873170731707317) internal successors, (794), 205 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:03:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 794 transitions. [2021-10-05 22:03:19,255 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 794 transitions. Word has length 21 [2021-10-05 22:03:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:03:19,256 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 794 transitions. [2021-10-05 22:03:19,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:03:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 794 transitions. [2021-10-05 22:03:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-05 22:03:19,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:03:19,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:03:19,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-05 22:03:19,262 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 22:03:19,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:03:19,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1109113305, now seen corresponding path program 2 times [2021-10-05 22:03:19,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:03:19,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134618221] [2021-10-05 22:03:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:03:19,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:03:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:03:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:03:19,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:03:19,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134618221] [2021-10-05 22:03:19,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134618221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:03:19,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 22:03:19,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 22:03:19,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847488457] [2021-10-05 22:03:19,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 22:03:19,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:03:19,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 22:03:19,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-05 22:03:19,454 INFO L87 Difference]: Start difference. First operand 206 states and 794 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:03:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:03:19,553 INFO L93 Difference]: Finished difference Result 259 states and 968 transitions. [2021-10-05 22:03:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 22:03:19,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-05 22:03:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:03:19,556 INFO L225 Difference]: With dead ends: 259 [2021-10-05 22:03:19,556 INFO L226 Difference]: Without dead ends: 0 [2021-10-05 22:03:19,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-05 22:03:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-05 22:03:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-05 22:03:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:03:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-05 22:03:19,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-05 22:03:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:03:19,559 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-05 22:03:19,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:03:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-05 22:03:19,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-05 22:03:19,562 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-05 22:03:19,563 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-05 22:03:19,563 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-05 22:03:19,564 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-05 22:03:19,564 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-05 22:03:19,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-05 22:03:19,569 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-05 22:03:19,569 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-05 22:03:19,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:03:19 BasicIcfg [2021-10-05 22:03:19,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-05 22:03:19,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-05 22:03:19,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-05 22:03:19,573 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-05 22:03:19,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:03:14" (3/4) ... [2021-10-05 22:03:19,577 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-05 22:03:19,584 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-05 22:03:19,585 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-05 22:03:19,585 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-05 22:03:19,585 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-05 22:03:19,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-05 22:03:19,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-05 22:03:19,591 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 22:03:19,591 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 22:03:19,643 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-05 22:03:19,643 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-05 22:03:19,648 INFO L168 Benchmark]: Toolchain (without parser) took 6496.57 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 29.8 MB in the beginning and 39.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-05 22:03:19,648 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 39.8 MB. Free memory was 20.0 MB in the beginning and 20.0 MB in the end (delta: 20.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 22:03:19,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.91 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 32.4 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-05 22:03:19,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 30.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 22:03:19,650 INFO L168 Benchmark]: Boogie Preprocessor took 32.15 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 29.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 22:03:19,651 INFO L168 Benchmark]: RCFGBuilder took 532.33 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 29.8 MB in the end (delta: -312.3 kB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-05 22:03:19,652 INFO L168 Benchmark]: TraceAbstraction took 5367.50 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 29.3 MB in the beginning and 41.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-05 22:03:19,653 INFO L168 Benchmark]: Witness Printer took 70.91 ms. Allocated memory is still 81.8 MB. Free memory was 41.9 MB in the beginning and 39.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 22:03:19,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 39.8 MB. Free memory was 20.0 MB in the beginning and 20.0 MB in the end (delta: 20.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 434.91 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 32.4 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 30.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.15 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 29.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 532.33 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 29.8 MB in the end (delta: -312.3 kB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5367.50 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 29.3 MB in the beginning and 41.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 70.91 ms. Allocated memory is still 81.8 MB. Free memory was 41.9 MB in the beginning and 39.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4048.8ms, 123 PlacesBefore, 43 PlacesAfterwards, 119 TransitionsBefore, 34 TransitionsAfterwards, 2718 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 95 TotalNumberOfCompositions, 4076 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3124, positive: 3063, positive conditional: 0, positive unconditional: 3063, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2058, positive: 2032, positive conditional: 0, positive unconditional: 2032, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2058, positive: 1999, positive conditional: 0, positive unconditional: 1999, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 59, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3124, positive: 1031, positive conditional: 0, positive unconditional: 1031, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 2058, unknown conditional: 0, unknown unconditional: 2058] , Statistics on independence cache: Total cache size (in pairs): 148, Positive cache size: 136, Positive conditional cache size: 0, Positive unconditional cache size: 136, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 91]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 153 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5142.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 24.5ms, AutomataDifference: 265.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4138.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 105 SDtfs, 40 SDslu, 60 SDs, 0 SdLazy, 91 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 50 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.0ms SsaConstructionTime, 164.4ms SatisfiabilityAnalysisTime, 317.6ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 88 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-05 22:03:19,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...