./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/jm2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3 --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 24166db6f541d35bbfd02c8f0491b41b1a3db1de ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:17:39,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:17:39,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:17:39,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:17:39,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:17:39,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:17:39,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:17:39,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:17:39,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:17:39,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:17:39,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:17:39,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:17:39,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:17:39,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:17:39,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:17:39,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:17:39,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:17:39,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:17:39,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:17:39,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:17:39,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:17:39,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:17:39,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:17:39,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:17:39,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:17:39,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:17:39,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:17:39,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:17:39,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:17:39,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:17:39,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:17:39,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:17:39,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:17:39,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:17:39,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:17:39,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:17:39,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:17:39,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:17:39,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:17:39,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:17:39,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:17:39,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:17:39,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:17:39,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:17:39,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:17:39,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:17:39,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:17:39,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:17:39,592 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:17:39,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:17:39,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:17:39,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:17:39,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:17:39,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:17:39,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:17:39,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:17:39,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:17:39,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:17:39,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:17:39,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:17:39,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:17:39,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:17:39,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:17:39,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:17:39,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:17:39,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:17:39,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:17:39,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:17:39,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:17:39,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:17:39,598 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:17:39,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:17:39,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:17:39,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:17:39,601 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_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24166db6f541d35bbfd02c8f0491b41b1a3db1de [2021-10-15 20:17:39,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:17:39,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:17:39,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:17:39,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:17:39,926 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:17:39,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/loop-lit/jm2006.i [2021-10-15 20:17:40,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/data/f323b3828/2a622ee46641489b9dfc3097f09370a1/FLAG027fd934a [2021-10-15 20:17:40,439 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:17:40,439 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/sv-benchmarks/c/loop-lit/jm2006.i [2021-10-15 20:17:40,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/data/f323b3828/2a622ee46641489b9dfc3097f09370a1/FLAG027fd934a [2021-10-15 20:17:40,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/data/f323b3828/2a622ee46641489b9dfc3097f09370a1 [2021-10-15 20:17:40,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:17:40,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:17:40,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:17:40,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:17:40,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:17:40,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:17:40" (1/1) ... [2021-10-15 20:17:40,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa1b40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:40, skipping insertion in model container [2021-10-15 20:17:40,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:17:40" (1/1) ... [2021-10-15 20:17:40,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:17:40,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:17:41,155 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/sv-benchmarks/c/loop-lit/jm2006.i[895,908] [2021-10-15 20:17:41,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:17:41,184 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:17:41,203 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/sv-benchmarks/c/loop-lit/jm2006.i[895,908] [2021-10-15 20:17:41,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:17:41,225 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:17:41,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41 WrapperNode [2021-10-15 20:17:41,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:17:41,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:17:41,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:17:41,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:17:41,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:17:41,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:17:41,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:17:41,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:17:41,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:17:41,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:17:41,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:17:41,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:17:41,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (1/1) ... [2021-10-15 20:17:41,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:17:41,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:17:41,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:17:41,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:17:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:17:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:17:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:17:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:17:41,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:17:41,553 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 20:17:41,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:41 BoogieIcfgContainer [2021-10-15 20:17:41,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:17:41,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:17:41,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:17:41,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:17:41,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:17:40" (1/3) ... [2021-10-15 20:17:41,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db76e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:17:41, skipping insertion in model container [2021-10-15 20:17:41,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:41" (2/3) ... [2021-10-15 20:17:41,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db76e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:17:41, skipping insertion in model container [2021-10-15 20:17:41,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:41" (3/3) ... [2021-10-15 20:17:41,564 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2021-10-15 20:17:41,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:17:41,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:17:41,618 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:17:41,625 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:17:41,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:17:41,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 16 transitions, 32 flow [2021-10-15 20:17:41,654 INFO L129 PetriNetUnfolder]: 5/16 cut-off events. [2021-10-15 20:17:41,654 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:41,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 16 events. 5/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:17:41,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 16 transitions, 32 flow [2021-10-15 20:17:41,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 8 places, 9 transitions, 18 flow [2021-10-15 20:17:41,663 INFO L129 PetriNetUnfolder]: 2/8 cut-off events. [2021-10-15 20:17:41,664 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:41,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:41,665 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:41,665 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:41,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1806972302, now seen corresponding path program 1 times [2021-10-15 20:17:41,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:41,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150144606] [2021-10-15 20:17:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:41,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:42,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:42,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150144606] [2021-10-15 20:17:42,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150144606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:42,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:42,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:17:42,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225316015] [2021-10-15 20:17:42,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:17:42,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:42,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:17:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:17:42,173 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 16 [2021-10-15 20:17:42,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 9 transitions, 18 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-10-15 20:17:42,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:42,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 16 [2021-10-15 20:17:42,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:42,248 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-10-15 20:17:42,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:42,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 11 events. 1/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 20:17:42,251 INFO L132 encePairwiseOnDemand]: 10/16 looper letters, 5 selfloop transitions, 2 changer transitions 2/11 dead transitions. [2021-10-15 20:17:42,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 11 transitions, 40 flow [2021-10-15 20:17:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:17:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:17:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2021-10-15 20:17:42,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4625 [2021-10-15 20:17:42,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 37 transitions. [2021-10-15 20:17:42,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 37 transitions. [2021-10-15 20:17:42,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:42,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 37 transitions. [2021-10-15 20:17:42,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2021-10-15 20:17:42,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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) [2021-10-15 20:17:42,278 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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) [2021-10-15 20:17:42,280 INFO L186 Difference]: Start difference. First operand has 8 places, 9 transitions, 18 flow. Second operand 5 states and 37 transitions. [2021-10-15 20:17:42,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 11 transitions, 40 flow [2021-10-15 20:17:42,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 11 transitions, 40 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:17:42,287 INFO L242 Difference]: Finished difference. Result has 15 places, 9 transitions, 32 flow [2021-10-15 20:17:42,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=32, PETRI_PLACES=15, PETRI_TRANSITIONS=9} [2021-10-15 20:17:42,290 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 7 predicate places. [2021-10-15 20:17:42,292 INFO L470 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 32 flow [2021-10-15 20:17:42,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-10-15 20:17:42,292 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:42,293 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:42,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:17:42,294 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:42,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:42,295 INFO L82 PathProgramCache]: Analyzing trace with hash 183172310, now seen corresponding path program 1 times [2021-10-15 20:17:42,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:42,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703889826] [2021-10-15 20:17:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:42,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:42,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:42,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703889826] [2021-10-15 20:17:42,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703889826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:17:42,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453616683] [2021-10-15 20:17:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:42,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:17:42,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:17:42,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:17:42,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:17:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:42,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-15 20:17:42,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:42,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453616683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:17:42,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:17:42,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-15 20:17:42,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132859077] [2021-10-15 20:17:42,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-15 20:17:42,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-15 20:17:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:17:42,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 16 [2021-10-15 20:17:42,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 32 flow. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 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) [2021-10-15 20:17:42,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:42,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 16 [2021-10-15 20:17:42,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:43,033 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-10-15 20:17:43,033 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 20:17:43,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 12 events. 1/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 28. Up to 7 conditions per place. [2021-10-15 20:17:43,036 INFO L132 encePairwiseOnDemand]: 11/16 looper letters, 5 selfloop transitions, 3 changer transitions 2/12 dead transitions. [2021-10-15 20:17:43,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 64 flow [2021-10-15 20:17:43,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:17:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:17:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2021-10-15 20:17:43,043 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2021-10-15 20:17:43,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 41 transitions. [2021-10-15 20:17:43,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 41 transitions. [2021-10-15 20:17:43,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:43,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 41 transitions. [2021-10-15 20:17:43,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-10-15 20:17:43,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2021-10-15 20:17:43,046 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2021-10-15 20:17:43,046 INFO L186 Difference]: Start difference. First operand has 15 places, 9 transitions, 32 flow. Second operand 6 states and 41 transitions. [2021-10-15 20:17:43,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 64 flow [2021-10-15 20:17:43,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 54 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-10-15 20:17:43,049 INFO L242 Difference]: Finished difference. Result has 18 places, 10 transitions, 44 flow [2021-10-15 20:17:43,049 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=44, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2021-10-15 20:17:43,050 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 10 predicate places. [2021-10-15 20:17:43,050 INFO L470 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 44 flow [2021-10-15 20:17:43,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 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) [2021-10-15 20:17:43,050 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:43,051 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:43,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:17:43,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:17:43,271 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:43,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:43,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1384980110, now seen corresponding path program 2 times [2021-10-15 20:17:43,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:43,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057027088] [2021-10-15 20:17:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:43,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:43,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:43,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057027088] [2021-10-15 20:17:43,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057027088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:17:43,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948038897] [2021-10-15 20:17:43,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:17:43,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:17:43,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:17:43,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:17:43,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 20:17:43,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:17:43,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:17:43,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-15 20:17:43,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:43,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948038897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:17:43,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:17:43,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-15 20:17:43,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680080344] [2021-10-15 20:17:43,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 20:17:43,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:43,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 20:17:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-15 20:17:43,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 16 [2021-10-15 20:17:43,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 10 transitions, 44 flow. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 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) [2021-10-15 20:17:43,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:43,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 16 [2021-10-15 20:17:43,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:43,830 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-10-15 20:17:43,830 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 20:17:43,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 16 events. 1/16 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 48. Up to 9 conditions per place. [2021-10-15 20:17:43,831 INFO L132 encePairwiseOnDemand]: 11/16 looper letters, 5 selfloop transitions, 5 changer transitions 4/16 dead transitions. [2021-10-15 20:17:43,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 16 transitions, 104 flow [2021-10-15 20:17:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 20:17:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 20:17:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 66 transitions. [2021-10-15 20:17:43,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4125 [2021-10-15 20:17:43,838 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 66 transitions. [2021-10-15 20:17:43,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 66 transitions. [2021-10-15 20:17:43,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:43,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 66 transitions. [2021-10-15 20:17:43,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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) [2021-10-15 20:17:43,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 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) [2021-10-15 20:17:43,847 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 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) [2021-10-15 20:17:43,847 INFO L186 Difference]: Start difference. First operand has 18 places, 10 transitions, 44 flow. Second operand 10 states and 66 transitions. [2021-10-15 20:17:43,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 16 transitions, 104 flow [2021-10-15 20:17:43,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 88 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-10-15 20:17:43,850 INFO L242 Difference]: Finished difference. Result has 27 places, 12 transitions, 72 flow [2021-10-15 20:17:43,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=12} [2021-10-15 20:17:43,851 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 19 predicate places. [2021-10-15 20:17:43,851 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 12 transitions, 72 flow [2021-10-15 20:17:43,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 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) [2021-10-15 20:17:43,857 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:43,857 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:43,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 20:17:44,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:17:44,070 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:44,071 INFO L82 PathProgramCache]: Analyzing trace with hash -422590578, now seen corresponding path program 3 times [2021-10-15 20:17:44,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:44,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552750447] [2021-10-15 20:17:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:44,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 20:17:44,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:44,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552750447] [2021-10-15 20:17:44,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552750447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:17:44,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833838605] [2021-10-15 20:17:44,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 20:17:44,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:17:44,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:17:44,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:17:44,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 20:17:44,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-15 20:17:44,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:17:44,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-15 20:17:44,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:44,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833838605] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:17:44,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:17:44,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-10-15 20:17:44,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454245892] [2021-10-15 20:17:44,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-15 20:17:44,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-15 20:17:44,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:17:44,593 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 16 [2021-10-15 20:17:44,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 12 transitions, 72 flow. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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) [2021-10-15 20:17:44,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:44,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 16 [2021-10-15 20:17:44,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:44,739 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-10-15 20:17:44,739 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-10-15 20:17:44,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 13 events. 1/13 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2021-10-15 20:17:44,740 INFO L132 encePairwiseOnDemand]: 11/16 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-10-15 20:17:44,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 13 transitions, 112 flow [2021-10-15 20:17:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 20:17:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-15 20:17:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 74 transitions. [2021-10-15 20:17:44,742 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2021-10-15 20:17:44,742 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 74 transitions. [2021-10-15 20:17:44,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 74 transitions. [2021-10-15 20:17:44,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:44,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 74 transitions. [2021-10-15 20:17:44,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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) [2021-10-15 20:17:44,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 16.0) internal successors, (208), 13 states have internal predecessors, (208), 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) [2021-10-15 20:17:44,745 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 16.0) internal successors, (208), 13 states have internal predecessors, (208), 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) [2021-10-15 20:17:44,745 INFO L186 Difference]: Start difference. First operand has 27 places, 12 transitions, 72 flow. Second operand 12 states and 74 transitions. [2021-10-15 20:17:44,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 13 transitions, 112 flow [2021-10-15 20:17:44,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 13 transitions, 88 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-10-15 20:17:44,748 INFO L242 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2021-10-15 20:17:44,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2021-10-15 20:17:44,749 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 20 predicate places. [2021-10-15 20:17:44,749 INFO L470 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2021-10-15 20:17:44,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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) [2021-10-15 20:17:44,752 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:44,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 20:17:44,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:17:44,983 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:17:44,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:17:44 BoogieIcfgContainer [2021-10-15 20:17:44,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:17:44,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:17:44,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:17:44,987 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:17:44,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:41" (3/4) ... [2021-10-15 20:17:44,989 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:17:45,007 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 20:17:45,008 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 20:17:45,008 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:17:45,008 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:17:45,044 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:17:45,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:17:45,046 INFO L168 Benchmark]: Toolchain (without parser) took 4211.33 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 64.9 MB in the beginning and 99.7 MB in the end (delta: -34.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:45,047 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:45,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.35 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 72.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:45,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.05 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 71.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:45,048 INFO L168 Benchmark]: Boogie Preprocessor took 20.02 ms. Allocated memory is still 98.6 MB. Free memory was 71.4 MB in the beginning and 70.5 MB in the end (delta: 847.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:45,049 INFO L168 Benchmark]: RCFGBuilder took 265.82 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 61.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:45,049 INFO L168 Benchmark]: TraceAbstraction took 3429.48 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 61.3 MB in the beginning and 36.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:45,050 INFO L168 Benchmark]: Witness Printer took 57.71 ms. Allocated memory is still 125.8 MB. Free memory was 36.8 MB in the beginning and 99.7 MB in the end (delta: -62.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:45,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.35 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 72.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.05 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 71.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.02 ms. Allocated memory is still 98.6 MB. Free memory was 71.4 MB in the beginning and 70.5 MB in the end (delta: 847.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 265.82 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 61.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3429.48 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 61.3 MB in the beginning and 36.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. * Witness Printer took 57.71 ms. Allocated memory is still 125.8 MB. Free memory was 36.8 MB in the beginning and 99.7 MB in the end (delta: -62.9 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: 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: 19]: 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 CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3369.4ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 561.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 22 SDslu, 20 SDs, 0 SdLazy, 152 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 132.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 640.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=3, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.6ms SsaConstructionTime, 167.0ms SatisfiabilityAnalysisTime, 1565.0ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 504 SizeOfPredicates, 15 NumberOfNonLiveVariables, 185 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/28 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! [2021-10-15 20:17:45,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888730e3-f479-4c24-a8dd-0324a12dbfeb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...