./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer --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 75b6321658285c0e5c05d59d7bf40c5ba47b7cd7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:59:57,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:59:57,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:59:57,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:59:57,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:59:57,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:59:57,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:59:57,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:59:57,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:59:57,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:59:57,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:59:57,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:59:57,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:59:57,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:59:57,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:59:57,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:59:57,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:59:57,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:59:57,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:59:57,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:59:57,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:59:57,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:59:57,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:59:57,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:59:57,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:59:57,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:59:57,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:59:57,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:59:57,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:59:57,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:59:57,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:59:57,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:59:57,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:59:57,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:59:57,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:59:57,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:59:57,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:59:57,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:59:57,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:59:57,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:59:57,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:59:57,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:59:57,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:59:57,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:59:57,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:59:57,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:59:57,646 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:59:57,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:59:57,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:59:57,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:59:57,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:59:57,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:59:57,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:59:57,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:59:57,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:59:57,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:59:57,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:59:57,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:59:57,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:59:57,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:59:57,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:59:57,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:59:57,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:59:57,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:59:57,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:59:57,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:59:57,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:59:57,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:59:57,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:59:57,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:59:57,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:59:57,654 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:/tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b6321658285c0e5c05d59d7bf40c5ba47b7cd7 [2020-11-29 20:59:57,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:59:57,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:59:57,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:59:57,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:59:57,929 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:59:57,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i [2020-11-29 20:59:57,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/data/e1da9eacf/db3fddece23a4478ac5ea0d7bd9d0a4c/FLAG595d56309 [2020-11-29 20:59:58,559 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:59:58,560 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i [2020-11-29 20:59:58,575 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/data/e1da9eacf/db3fddece23a4478ac5ea0d7bd9d0a4c/FLAG595d56309 [2020-11-29 20:59:58,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/data/e1da9eacf/db3fddece23a4478ac5ea0d7bd9d0a4c [2020-11-29 20:59:58,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:59:58,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:59:58,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:59:58,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:59:58,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:59:58,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:59:58" (1/1) ... [2020-11-29 20:59:58,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91a306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:58, skipping insertion in model container [2020-11-29 20:59:58,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:59:58" (1/1) ... [2020-11-29 20:59:58,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:59:58,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:59:59,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:59:59,451 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:59:59,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:59:59,578 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:59:59,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59 WrapperNode [2020-11-29 20:59:59,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:59:59,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:59:59,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:59:59,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:59:59,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:59:59,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:59:59,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:59:59,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:59:59,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... [2020-11-29 20:59:59,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:59:59,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:59:59,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:59:59,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:59:59,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:59:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:59:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 20:59:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:59:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:59:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 20:59:59,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 20:59:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 20:59:59,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 20:59:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 20:59:59,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 20:59:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:59:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 20:59:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:59:59,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:59:59,721 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 21:00:00,136 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:00:00,136 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 21:00:00,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:00 BoogieIcfgContainer [2020-11-29 21:00:00,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:00:00,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:00:00,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:00:00,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:00:00,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:59:58" (1/3) ... [2020-11-29 21:00:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311a443f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:00:00, skipping insertion in model container [2020-11-29 21:00:00,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:59:59" (2/3) ... [2020-11-29 21:00:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311a443f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:00:00, skipping insertion in model container [2020-11-29 21:00:00,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:00" (3/3) ... [2020-11-29 21:00:00,148 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-11-29 21:00:00,173 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 21:00:00,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:00:00,178 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 21:00:00,179 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 21:00:00,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,203 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,204 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,204 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,225 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,225 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,228 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,229 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:00,237 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 21:00:00,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 21:00:00,270 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:00:00,271 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:00:00,271 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:00:00,271 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:00:00,271 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:00:00,271 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:00:00,271 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:00:00,271 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:00:00,293 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 21:00:00,296 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-29 21:00:00,298 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-29 21:00:00,299 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-29 21:00:00,351 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-29 21:00:00,351 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 21:00:00,355 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-29 21:00:00,359 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 21:00:01,889 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-29 21:00:02,529 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-29 21:00:02,640 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-11-29 21:00:02,641 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-29 21:00:02,645 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-29 21:00:02,674 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-29 21:00:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-29 21:00:02,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:00:02,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:02,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:02,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:02,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-11-29 21:00:02,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:02,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396840406] [2020-11-29 21:00:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:02,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396840406] [2020-11-29 21:00:02,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:02,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:00:02,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833470784] [2020-11-29 21:00:02,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:00:02,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:02,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:00:02,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:00:02,872 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-29 21:00:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:02,902 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-29 21:00:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:00:02,903 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 21:00:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:02,920 INFO L225 Difference]: With dead ends: 362 [2020-11-29 21:00:02,921 INFO L226 Difference]: Without dead ends: 298 [2020-11-29 21:00:02,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:00:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-29 21:00:02,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-29 21:00:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-29 21:00:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-29 21:00:03,005 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-29 21:00:03,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:03,006 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-29 21:00:03,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:00:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-29 21:00:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:00:03,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:03,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:03,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:00:03,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:03,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-11-29 21:00:03,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:03,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264633245] [2020-11-29 21:00:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:03,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264633245] [2020-11-29 21:00:03,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:03,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:00:03,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558431770] [2020-11-29 21:00:03,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:00:03,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:03,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:00:03,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:03,177 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-29 21:00:03,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:03,199 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-29 21:00:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:00:03,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 21:00:03,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:03,203 INFO L225 Difference]: With dead ends: 217 [2020-11-29 21:00:03,203 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 21:00:03,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 21:00:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-29 21:00:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-29 21:00:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-29 21:00:03,228 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-29 21:00:03,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:03,229 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-29 21:00:03,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:00:03,230 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-29 21:00:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:00:03,233 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:03,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:03,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:00:03,234 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:03,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-11-29 21:00:03,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:03,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142684166] [2020-11-29 21:00:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:03,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142684166] [2020-11-29 21:00:03,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:03,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:00:03,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381229370] [2020-11-29 21:00:03,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:00:03,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:03,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:00:03,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:03,331 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-11-29 21:00:03,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:03,363 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-29 21:00:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:00:03,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 21:00:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:03,365 INFO L225 Difference]: With dead ends: 136 [2020-11-29 21:00:03,365 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 21:00:03,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 21:00:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-29 21:00:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 21:00:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-29 21:00:03,375 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-29 21:00:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:03,375 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-29 21:00:03,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:00:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-29 21:00:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:00:03,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:03,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:03,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:00:03,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:03,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:03,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-11-29 21:00:03,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:03,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114114018] [2020-11-29 21:00:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:03,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114114018] [2020-11-29 21:00:03,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:03,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:00:03,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644637407] [2020-11-29 21:00:03,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:00:03,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:03,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:00:03,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:00:03,458 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-11-29 21:00:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:03,490 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-29 21:00:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:00:03,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 21:00:03,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:03,492 INFO L225 Difference]: With dead ends: 109 [2020-11-29 21:00:03,492 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 21:00:03,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:00:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 21:00:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-29 21:00:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 21:00:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-29 21:00:03,498 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-29 21:00:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:03,499 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-29 21:00:03,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:00:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-29 21:00:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:00:03,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:03,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:03,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:00:03,501 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:03,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-11-29 21:00:03,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:03,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058999633] [2020-11-29 21:00:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:03,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058999633] [2020-11-29 21:00:03,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:03,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:00:03,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533161559] [2020-11-29 21:00:03,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:00:03,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:03,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:00:03,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:00:03,606 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-11-29 21:00:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:03,658 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-29 21:00:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:00:03,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 21:00:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:03,659 INFO L225 Difference]: With dead ends: 135 [2020-11-29 21:00:03,659 INFO L226 Difference]: Without dead ends: 85 [2020-11-29 21:00:03,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:00:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-29 21:00:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-29 21:00:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-29 21:00:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-11-29 21:00:03,665 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 18 [2020-11-29 21:00:03,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:03,665 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-11-29 21:00:03,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:00:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-11-29 21:00:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:00:03,666 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:03,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:03,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:00:03,667 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:03,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:03,667 INFO L82 PathProgramCache]: Analyzing trace with hash 129745538, now seen corresponding path program 2 times [2020-11-29 21:00:03,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:03,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89978286] [2020-11-29 21:00:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:03,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:03,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89978286] [2020-11-29 21:00:03,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:03,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:00:03,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467722521] [2020-11-29 21:00:03,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:00:03,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:03,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:00:03,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:00:03,799 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 5 states. [2020-11-29 21:00:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:03,847 INFO L93 Difference]: Finished difference Result 123 states and 251 transitions. [2020-11-29 21:00:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:00:03,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 21:00:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:03,849 INFO L225 Difference]: With dead ends: 123 [2020-11-29 21:00:03,849 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 21:00:03,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:00:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 21:00:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-29 21:00:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 21:00:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 117 transitions. [2020-11-29 21:00:03,852 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 117 transitions. Word has length 18 [2020-11-29 21:00:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:03,852 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 117 transitions. [2020-11-29 21:00:03,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:00:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 117 transitions. [2020-11-29 21:00:03,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:00:03,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:03,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:03,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 21:00:03,853 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:03,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:03,854 INFO L82 PathProgramCache]: Analyzing trace with hash -898209114, now seen corresponding path program 3 times [2020-11-29 21:00:03,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:03,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917120121] [2020-11-29 21:00:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:03,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917120121] [2020-11-29 21:00:03,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:03,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:00:03,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919969372] [2020-11-29 21:00:03,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:00:03,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:03,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:00:03,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:03,931 INFO L87 Difference]: Start difference. First operand 61 states and 117 transitions. Second operand 4 states. [2020-11-29 21:00:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:03,978 INFO L93 Difference]: Finished difference Result 60 states and 116 transitions. [2020-11-29 21:00:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:00:03,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 21:00:03,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:03,979 INFO L225 Difference]: With dead ends: 60 [2020-11-29 21:00:03,979 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:00:03,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:00:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:00:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:00:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:00:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:00:03,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 21:00:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:03,980 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:00:03,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:00:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:00:03,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:00:03,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 21:00:03,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:00:03 BasicIcfg [2020-11-29 21:00:03,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:00:03,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:00:03,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:00:03,985 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:00:03,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:00" (3/4) ... [2020-11-29 21:00:03,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:00:03,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 21:00:03,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 21:00:03,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 21:00:04,004 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 21:00:04,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:00:04,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:00:04,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:00:04,067 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fb9006b0-600c-4c54-ba9b-da3543e9c388/bin/uautomizer/witness.graphml [2020-11-29 21:00:04,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:00:04,069 INFO L168 Benchmark]: Toolchain (without parser) took 5210.44 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 59.0 MB in the beginning and 103.8 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:00:04,070 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 48.0 MB in the beginning and 48.0 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:00:04,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.26 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 58.8 MB in the beginning and 65.6 MB in the end (delta: -6.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:04,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.06 ms. Allocated memory is still 109.1 MB. Free memory was 65.6 MB in the beginning and 64.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:04,073 INFO L168 Benchmark]: Boogie Preprocessor took 25.50 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 62.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:00:04,074 INFO L168 Benchmark]: RCFGBuilder took 487.11 ms. Allocated memory is still 109.1 MB. Free memory was 62.5 MB in the beginning and 40.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:04,075 INFO L168 Benchmark]: TraceAbstraction took 3841.07 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 39.9 MB in the beginning and 105.9 MB in the end (delta: -65.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:04,075 INFO L168 Benchmark]: Witness Printer took 83.44 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 103.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:04,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 48.0 MB in the beginning and 48.0 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 713.26 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 58.8 MB in the beginning and 65.6 MB in the end (delta: -6.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.06 ms. Allocated memory is still 109.1 MB. Free memory was 65.6 MB in the beginning and 64.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.50 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 62.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 487.11 ms. Allocated memory is still 109.1 MB. Free memory was 62.5 MB in the beginning and 40.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3841.07 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 39.9 MB in the beginning and 105.9 MB in the end (delta: -65.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * Witness Printer took 83.44 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 103.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 952 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 117 SDtfs, 86 SDslu, 155 SDs, 0 SdLazy, 62 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...