./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_unknown_1_pos.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg --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 3a6dde2a92ac3673779dc1870ba1fd1bc276c09295c9135f4d9a42588d7fbdf0 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:00:11,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:00:11,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:00:11,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:00:11,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:00:11,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:00:11,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:00:11,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:00:11,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:00:11,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:00:11,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:00:11,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:00:11,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:00:11,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:00:11,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:00:11,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:00:11,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:00:11,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:00:11,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:00:11,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:00:11,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:00:11,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:00:11,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:00:11,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:00:11,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:00:11,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:00:11,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:00:11,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:00:11,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:00:11,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:00:11,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:00:11,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:00:11,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:00:11,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:00:11,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:00:11,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:00:11,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:00:11,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:00:11,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:00:11,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:00:11,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:00:11,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:00:11,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:00:11,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:00:11,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:00:11,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:00:11,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:00:11,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:00:11,582 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:00:11,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:00:11,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:00:11,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:00:11,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:00:11,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:00:11,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:00:11,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:00:11,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:00:11,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:00:11,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:00:11,585 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:00:11,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:00:11,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:00:11,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:00:11,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:00:11,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:00:11,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:00:11,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:00:11,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:00:11,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:00:11,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:00:11,587 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:00:11,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:00:11,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:00:11,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:00:11,588 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_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a6dde2a92ac3673779dc1870ba1fd1bc276c09295c9135f4d9a42588d7fbdf0 [2021-10-28 09:00:11,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:00:11,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:00:11,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:00:11,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:00:11,871 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:00:11,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_unknown_1_pos.i [2021-10-28 09:00:11,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/data/ca5aaf686/c9099130c2e94358834289e823a48ff5/FLAGb4f4c0a02 [2021-10-28 09:00:12,433 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:00:12,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_unknown_1_pos.i [2021-10-28 09:00:12,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/data/ca5aaf686/c9099130c2e94358834289e823a48ff5/FLAGb4f4c0a02 [2021-10-28 09:00:12,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/data/ca5aaf686/c9099130c2e94358834289e823a48ff5 [2021-10-28 09:00:12,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:00:12,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:00:12,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:00:12,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:00:12,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:00:12,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:00:12" (1/1) ... [2021-10-28 09:00:12,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3c0220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:12, skipping insertion in model container [2021-10-28 09:00:12,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:00:12" (1/1) ... [2021-10-28 09:00:12,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:00:12,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:00:13,039 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_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_unknown_1_pos.i[846,859] [2021-10-28 09:00:13,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:00:13,205 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:00:13,217 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_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_unknown_1_pos.i[846,859] [2021-10-28 09:00:13,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:00:13,287 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:00:13,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13 WrapperNode [2021-10-28 09:00:13,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:00:13,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:00:13,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:00:13,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:00:13,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:00:13,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:00:13,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:00:13,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:00:13,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:00:13,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:00:13,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:00:13,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:00:13,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (1/1) ... [2021-10-28 09:00:13,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:00:13,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:13,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:00:13,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:00:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2021-10-28 09:00:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2021-10-28 09:00:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:00:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-28 09:00:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:00:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:00:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:00:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:00:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:00:13,478 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:00:13,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:00:13,858 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-28 09:00:13,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:00:13 BoogieIcfgContainer [2021-10-28 09:00:13,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:00:13,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:00:13,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:00:13,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:00:13,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:00:12" (1/3) ... [2021-10-28 09:00:13,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ee2846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:00:13, skipping insertion in model container [2021-10-28 09:00:13,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:00:13" (2/3) ... [2021-10-28 09:00:13,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ee2846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:00:13, skipping insertion in model container [2021-10-28 09:00:13,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:00:13" (3/3) ... [2021-10-28 09:00:13,872 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_51-refine-protected-loop2_unknown_1_pos.i [2021-10-28 09:00:13,877 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:00:13,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:00:13,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:00:13,878 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:00:13,940 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,941 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,942 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,943 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,943 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,943 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,943 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,944 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,944 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,944 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,945 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,945 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,946 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,946 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,946 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,946 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,947 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,947 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,947 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,947 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,948 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,949 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,949 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,949 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,950 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,950 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,951 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,951 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,952 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,952 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,953 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,953 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,953 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,955 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,956 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,956 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,956 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,956 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,957 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,957 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,958 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,958 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,958 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,958 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,958 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,959 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,959 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,959 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,959 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,960 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,960 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,960 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,960 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,961 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,961 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,961 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,962 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,962 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,963 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,963 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,963 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,963 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,966 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,967 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,967 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,967 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,967 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,967 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,968 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,968 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,968 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,968 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,969 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,969 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:00:13,974 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 09:00:14,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:00:14,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:00:14,046 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:00:14,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 101 transitions, 207 flow [2021-10-28 09:00:14,173 INFO L129 PetriNetUnfolder]: 8/100 cut-off events. [2021-10-28 09:00:14,176 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:00:14,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 100 events. 8/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 142 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-10-28 09:00:14,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 101 transitions, 207 flow [2021-10-28 09:00:14,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 100 transitions, 203 flow [2021-10-28 09:00:14,237 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2021-10-28 09:00:14,237 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:00:14,238 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:00:14,238 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:14,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:00:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash 820874016, now seen corresponding path program 1 times [2021-10-28 09:00:14,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:14,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253065631] [2021-10-28 09:00:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:14,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:14,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:14,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253065631] [2021-10-28 09:00:14,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253065631] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:14,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:14,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:00:14,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728972129] [2021-10-28 09:00:14,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:00:14,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:14,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:00:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:00:14,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 101 [2021-10-28 09:00:14,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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) [2021-10-28 09:00:14,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:00:14,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 101 [2021-10-28 09:00:14,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:00:14,878 INFO L129 PetriNetUnfolder]: 91/478 cut-off events. [2021-10-28 09:00:14,878 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 09:00:14,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 478 events. 91/478 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2449 event pairs, 15 based on Foata normal form. 32/464 useless extension candidates. Maximal degree in co-relation 597. Up to 51 conditions per place. [2021-10-28 09:00:14,888 INFO L132 encePairwiseOnDemand]: 88/101 looper letters, 43 selfloop transitions, 12 changer transitions 0/131 dead transitions. [2021-10-28 09:00:14,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 375 flow [2021-10-28 09:00:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:00:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:00:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 712 transitions. [2021-10-28 09:00:14,932 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8811881188118812 [2021-10-28 09:00:14,934 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 712 transitions. [2021-10-28 09:00:14,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 712 transitions. [2021-10-28 09:00:14,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:00:14,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 712 transitions. [2021-10-28 09:00:14,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 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) [2021-10-28 09:00:14,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 101.0) internal successors, (909), 9 states have internal predecessors, (909), 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) [2021-10-28 09:00:14,960 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 101.0) internal successors, (909), 9 states have internal predecessors, (909), 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) [2021-10-28 09:00:14,962 INFO L186 Difference]: Start difference. First operand has 96 places, 100 transitions, 203 flow. Second operand 8 states and 712 transitions. [2021-10-28 09:00:14,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 131 transitions, 375 flow [2021-10-28 09:00:14,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:00:14,971 INFO L242 Difference]: Finished difference. Result has 104 places, 103 transitions, 281 flow [2021-10-28 09:00:14,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=281, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2021-10-28 09:00:14,974 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 8 predicate places. [2021-10-28 09:00:14,974 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 281 flow [2021-10-28 09:00:14,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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) [2021-10-28 09:00:14,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:00:14,975 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:14,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:00:14,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:00:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:14,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1517761077, now seen corresponding path program 1 times [2021-10-28 09:00:14,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:14,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358886544] [2021-10-28 09:00:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:14,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:15,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:15,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358886544] [2021-10-28 09:00:15,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358886544] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:15,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:15,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:00:15,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226109875] [2021-10-28 09:00:15,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:00:15,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:00:15,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:00:15,073 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 101 [2021-10-28 09:00:15,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-10-28 09:00:15,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:00:15,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 101 [2021-10-28 09:00:15,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:00:15,198 INFO L129 PetriNetUnfolder]: 45/411 cut-off events. [2021-10-28 09:00:15,198 INFO L130 PetriNetUnfolder]: For 65/69 co-relation queries the response was YES. [2021-10-28 09:00:15,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 411 events. 45/411 cut-off events. For 65/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1584 event pairs, 7 based on Foata normal form. 7/399 useless extension candidates. Maximal degree in co-relation 543. Up to 51 conditions per place. [2021-10-28 09:00:15,203 INFO L132 encePairwiseOnDemand]: 95/101 looper letters, 13 selfloop transitions, 6 changer transitions 4/103 dead transitions. [2021-10-28 09:00:15,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 103 transitions, 302 flow [2021-10-28 09:00:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:00:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:00:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2021-10-28 09:00:15,228 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8712871287128713 [2021-10-28 09:00:15,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2021-10-28 09:00:15,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2021-10-28 09:00:15,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:00:15,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2021-10-28 09:00:15,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-10-28 09:00:15,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2021-10-28 09:00:15,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2021-10-28 09:00:15,232 INFO L186 Difference]: Start difference. First operand has 104 places, 103 transitions, 281 flow. Second operand 3 states and 264 transitions. [2021-10-28 09:00:15,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 103 transitions, 302 flow [2021-10-28 09:00:15,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 291 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-10-28 09:00:15,240 INFO L242 Difference]: Finished difference. Result has 103 places, 98 transitions, 258 flow [2021-10-28 09:00:15,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2021-10-28 09:00:15,241 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 7 predicate places. [2021-10-28 09:00:15,241 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 258 flow [2021-10-28 09:00:15,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-10-28 09:00:15,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:00:15,242 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:15,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:00:15,243 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:00:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:15,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1990238122, now seen corresponding path program 1 times [2021-10-28 09:00:15,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:15,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006379488] [2021-10-28 09:00:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:15,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:15,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:15,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006379488] [2021-10-28 09:00:15,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006379488] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:15,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:15,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:00:15,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78988874] [2021-10-28 09:00:15,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:00:15,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:00:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:00:15,349 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 101 [2021-10-28 09:00:15,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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) [2021-10-28 09:00:15,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:00:15,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 101 [2021-10-28 09:00:15,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:00:15,594 INFO L129 PetriNetUnfolder]: 168/853 cut-off events. [2021-10-28 09:00:15,594 INFO L130 PetriNetUnfolder]: For 168/191 co-relation queries the response was YES. [2021-10-28 09:00:15,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 853 events. 168/853 cut-off events. For 168/191 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4787 event pairs, 42 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 1384. Up to 167 conditions per place. [2021-10-28 09:00:15,604 INFO L132 encePairwiseOnDemand]: 92/101 looper letters, 17 selfloop transitions, 8 changer transitions 1/110 dead transitions. [2021-10-28 09:00:15,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 110 transitions, 342 flow [2021-10-28 09:00:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:00:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:00:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 520 transitions. [2021-10-28 09:00:15,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.858085808580858 [2021-10-28 09:00:15,611 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 520 transitions. [2021-10-28 09:00:15,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 520 transitions. [2021-10-28 09:00:15,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:00:15,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 520 transitions. [2021-10-28 09:00:15,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 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) [2021-10-28 09:00:15,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2021-10-28 09:00:15,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2021-10-28 09:00:15,625 INFO L186 Difference]: Start difference. First operand has 103 places, 98 transitions, 258 flow. Second operand 6 states and 520 transitions. [2021-10-28 09:00:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 110 transitions, 342 flow [2021-10-28 09:00:15,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 326 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-28 09:00:15,638 INFO L242 Difference]: Finished difference. Result has 107 places, 104 transitions, 308 flow [2021-10-28 09:00:15,639 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2021-10-28 09:00:15,639 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 11 predicate places. [2021-10-28 09:00:15,639 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 308 flow [2021-10-28 09:00:15,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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) [2021-10-28 09:00:15,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:00:15,641 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:15,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:00:15,641 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:00:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1969766906, now seen corresponding path program 1 times [2021-10-28 09:00:15,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:15,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377907991] [2021-10-28 09:00:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:15,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:15,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:15,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377907991] [2021-10-28 09:00:15,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377907991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:15,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842282935] [2021-10-28 09:00:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:15,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:15,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:15,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:15,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:00:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:15,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:00:15,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:16,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842282935] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:16,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:00:16,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-10-28 09:00:16,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863806860] [2021-10-28 09:00:16,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:00:16,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:16,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:00:16,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:00:16,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 101 [2021-10-28 09:00:16,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 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) [2021-10-28 09:00:16,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:00:16,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 101 [2021-10-28 09:00:16,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:00:16,711 INFO L129 PetriNetUnfolder]: 274/1551 cut-off events. [2021-10-28 09:00:16,711 INFO L130 PetriNetUnfolder]: For 892/934 co-relation queries the response was YES. [2021-10-28 09:00:16,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 1551 events. 274/1551 cut-off events. For 892/934 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11178 event pairs, 58 based on Foata normal form. 21/1507 useless extension candidates. Maximal degree in co-relation 2900. Up to 174 conditions per place. [2021-10-28 09:00:16,727 INFO L132 encePairwiseOnDemand]: 92/101 looper letters, 33 selfloop transitions, 21 changer transitions 1/139 dead transitions. [2021-10-28 09:00:16,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 139 transitions, 592 flow [2021-10-28 09:00:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:00:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:00:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 874 transitions. [2021-10-28 09:00:16,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8653465346534653 [2021-10-28 09:00:16,731 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 874 transitions. [2021-10-28 09:00:16,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 874 transitions. [2021-10-28 09:00:16,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:00:16,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 874 transitions. [2021-10-28 09:00:16,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 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) [2021-10-28 09:00:16,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 101.0) internal successors, (1111), 11 states have internal predecessors, (1111), 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) [2021-10-28 09:00:16,739 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 101.0) internal successors, (1111), 11 states have internal predecessors, (1111), 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) [2021-10-28 09:00:16,740 INFO L186 Difference]: Start difference. First operand has 107 places, 104 transitions, 308 flow. Second operand 10 states and 874 transitions. [2021-10-28 09:00:16,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 139 transitions, 592 flow [2021-10-28 09:00:16,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 582 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-10-28 09:00:16,749 INFO L242 Difference]: Finished difference. Result has 119 places, 121 transitions, 494 flow [2021-10-28 09:00:16,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=494, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2021-10-28 09:00:16,749 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 23 predicate places. [2021-10-28 09:00:16,749 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 494 flow [2021-10-28 09:00:16,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 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) [2021-10-28 09:00:16,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:00:16,750 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:16,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:00:16,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:16,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:00:16,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1198344256, now seen corresponding path program 1 times [2021-10-28 09:00:16,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:16,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240369663] [2021-10-28 09:00:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:16,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:17,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:17,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240369663] [2021-10-28 09:00:17,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240369663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:17,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:17,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:00:17,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064592767] [2021-10-28 09:00:17,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:00:17,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:17,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:00:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:00:17,107 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 101 [2021-10-28 09:00:17,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 494 flow. Second operand has 8 states, 8 states have (on average 79.125) internal successors, (633), 8 states have internal predecessors, (633), 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) [2021-10-28 09:00:17,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:00:17,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 101 [2021-10-28 09:00:17,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:00:17,943 INFO L129 PetriNetUnfolder]: 484/2885 cut-off events. [2021-10-28 09:00:17,943 INFO L130 PetriNetUnfolder]: For 3776/3835 co-relation queries the response was YES. [2021-10-28 09:00:17,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6419 conditions, 2885 events. 484/2885 cut-off events. For 3776/3835 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 23785 event pairs, 55 based on Foata normal form. 32/2797 useless extension candidates. Maximal degree in co-relation 6359. Up to 310 conditions per place. [2021-10-28 09:00:17,975 INFO L132 encePairwiseOnDemand]: 88/101 looper letters, 93 selfloop transitions, 104 changer transitions 1/281 dead transitions. [2021-10-28 09:00:17,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 281 transitions, 2141 flow [2021-10-28 09:00:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:00:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 09:00:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1973 transitions. [2021-10-28 09:00:17,983 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8139438943894389 [2021-10-28 09:00:17,983 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1973 transitions. [2021-10-28 09:00:17,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1973 transitions. [2021-10-28 09:00:17,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:00:17,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1973 transitions. [2021-10-28 09:00:17,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 82.20833333333333) internal successors, (1973), 24 states have internal predecessors, (1973), 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) [2021-10-28 09:00:17,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 101.0) internal successors, (2525), 25 states have internal predecessors, (2525), 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) [2021-10-28 09:00:18,001 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 101.0) internal successors, (2525), 25 states have internal predecessors, (2525), 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) [2021-10-28 09:00:18,001 INFO L186 Difference]: Start difference. First operand has 119 places, 121 transitions, 494 flow. Second operand 24 states and 1973 transitions. [2021-10-28 09:00:18,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 281 transitions, 2141 flow [2021-10-28 09:00:18,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 281 transitions, 2033 flow, removed 49 selfloop flow, removed 5 redundant places. [2021-10-28 09:00:18,026 INFO L242 Difference]: Finished difference. Result has 151 places, 220 transitions, 1746 flow [2021-10-28 09:00:18,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1746, PETRI_PLACES=151, PETRI_TRANSITIONS=220} [2021-10-28 09:00:18,027 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 55 predicate places. [2021-10-28 09:00:18,027 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 220 transitions, 1746 flow [2021-10-28 09:00:18,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.125) internal successors, (633), 8 states have internal predecessors, (633), 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) [2021-10-28 09:00:18,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:00:18,029 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:18,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:00:18,029 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:00:18,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1824182853, now seen corresponding path program 1 times [2021-10-28 09:00:18,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:18,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455978473] [2021-10-28 09:00:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:18,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:00:18,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:18,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455978473] [2021-10-28 09:00:18,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455978473] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:18,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:18,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:00:18,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546112698] [2021-10-28 09:00:18,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:00:18,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:18,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:00:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:00:18,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 101 [2021-10-28 09:00:18,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 220 transitions, 1746 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2021-10-28 09:00:18,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:00:18,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 101 [2021-10-28 09:00:18,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:00:19,097 INFO L129 PetriNetUnfolder]: 778/3790 cut-off events. [2021-10-28 09:00:19,097 INFO L130 PetriNetUnfolder]: For 9416/9538 co-relation queries the response was YES. [2021-10-28 09:00:19,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9819 conditions, 3790 events. 778/3790 cut-off events. For 9416/9538 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 33289 event pairs, 66 based on Foata normal form. 80/3722 useless extension candidates. Maximal degree in co-relation 9746. Up to 400 conditions per place. [2021-10-28 09:00:19,147 INFO L132 encePairwiseOnDemand]: 91/101 looper letters, 86 selfloop transitions, 137 changer transitions 0/307 dead transitions. [2021-10-28 09:00:19,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 307 transitions, 3002 flow [2021-10-28 09:00:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:00:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:00:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 837 transitions. [2021-10-28 09:00:19,151 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8287128712871287 [2021-10-28 09:00:19,151 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 837 transitions. [2021-10-28 09:00:19,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 837 transitions. [2021-10-28 09:00:19,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:00:19,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 837 transitions. [2021-10-28 09:00:19,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.7) internal successors, (837), 10 states have internal predecessors, (837), 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) [2021-10-28 09:00:19,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 101.0) internal successors, (1111), 11 states have internal predecessors, (1111), 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) [2021-10-28 09:00:19,160 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 101.0) internal successors, (1111), 11 states have internal predecessors, (1111), 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) [2021-10-28 09:00:19,161 INFO L186 Difference]: Start difference. First operand has 151 places, 220 transitions, 1746 flow. Second operand 10 states and 837 transitions. [2021-10-28 09:00:19,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 307 transitions, 3002 flow [2021-10-28 09:00:19,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 307 transitions, 2585 flow, removed 170 selfloop flow, removed 1 redundant places. [2021-10-28 09:00:19,259 INFO L242 Difference]: Finished difference. Result has 163 places, 273 transitions, 2326 flow [2021-10-28 09:00:19,260 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2326, PETRI_PLACES=163, PETRI_TRANSITIONS=273} [2021-10-28 09:00:19,260 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 67 predicate places. [2021-10-28 09:00:19,260 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 273 transitions, 2326 flow [2021-10-28 09:00:19,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2021-10-28 09:00:19,261 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:00:19,261 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:19,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:00:19,262 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:00:19,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash -746643589, now seen corresponding path program 2 times [2021-10-28 09:00:19,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:19,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179944932] [2021-10-28 09:00:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:19,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:00:19,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:19,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179944932] [2021-10-28 09:00:19,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179944932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:19,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947785791] [2021-10-28 09:00:19,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:00:19,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:19,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:19,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:19,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:00:19,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:00:19,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:00:19,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:00:19,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:19,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:00:19,570 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:00:19,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-28 09:00:19,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 09:00:19,802 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-28 09:00:19,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-28 09:00:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:00:20,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947785791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:20,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:00:20,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 09:00:20,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904599849] [2021-10-28 09:00:20,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:00:20,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:00:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:00:20,008 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2021-10-28 09:00:20,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 273 transitions, 2326 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2021-10-28 09:00:20,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:00:20,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2021-10-28 09:00:20,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:00:20,212 INFO L129 PetriNetUnfolder]: 23/280 cut-off events. [2021-10-28 09:00:20,212 INFO L130 PetriNetUnfolder]: For 360/366 co-relation queries the response was YES. [2021-10-28 09:00:20,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 280 events. 23/280 cut-off events. For 360/366 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 899 event pairs, 2 based on Foata normal form. 8/282 useless extension candidates. Maximal degree in co-relation 571. Up to 19 conditions per place. [2021-10-28 09:00:20,215 INFO L132 encePairwiseOnDemand]: 93/101 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2021-10-28 09:00:20,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 112 transitions, 558 flow [2021-10-28 09:00:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:00:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:00:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2021-10-28 09:00:20,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7339108910891089 [2021-10-28 09:00:20,219 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 593 transitions. [2021-10-28 09:00:20,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 593 transitions. [2021-10-28 09:00:20,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:00:20,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 593 transitions. [2021-10-28 09:00:20,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.125) internal successors, (593), 8 states have internal predecessors, (593), 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) [2021-10-28 09:00:20,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 101.0) internal successors, (909), 9 states have internal predecessors, (909), 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) [2021-10-28 09:00:20,225 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 101.0) internal successors, (909), 9 states have internal predecessors, (909), 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) [2021-10-28 09:00:20,225 INFO L186 Difference]: Start difference. First operand has 163 places, 273 transitions, 2326 flow. Second operand 8 states and 593 transitions. [2021-10-28 09:00:20,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 112 transitions, 558 flow [2021-10-28 09:00:20,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 112 transitions, 446 flow, removed 24 selfloop flow, removed 23 redundant places. [2021-10-28 09:00:20,231 INFO L242 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2021-10-28 09:00:20,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2021-10-28 09:00:20,232 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 31 predicate places. [2021-10-28 09:00:20,232 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2021-10-28 09:00:20,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2021-10-28 09:00:20,235 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:00:20,236 INFO L764 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:00:20,236 INFO L764 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:00:20,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:00:20,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:20,466 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-10-28 09:00:20,470 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:00:20,471 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:00:20,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:00:20 BasicIcfg [2021-10-28 09:00:20,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:00:20,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:00:20,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:00:20,474 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:00:20,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:00:13" (3/4) ... [2021-10-28 09:00:20,477 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:00:20,483 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2021-10-28 09:00:20,487 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-28 09:00:20,487 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:00:20,487 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 09:00:20,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:00:20,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:00:20,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:00:20,544 INFO L168 Benchmark]: Toolchain (without parser) took 7781.47 ms. Allocated memory was 83.9 MB in the beginning and 285.2 MB in the end (delta: 201.3 MB). Free memory was 47.1 MB in the beginning and 176.8 MB in the end (delta: -129.7 MB). Peak memory consumption was 72.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:00:20,545 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:00:20,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.70 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 46.9 MB in the beginning and 70.4 MB in the end (delta: -23.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:00:20,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.88 ms. Allocated memory is still 104.9 MB. Free memory was 70.4 MB in the beginning and 68.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:00:20,546 INFO L168 Benchmark]: Boogie Preprocessor took 46.95 ms. Allocated memory is still 104.9 MB. Free memory was 68.3 MB in the beginning and 66.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:00:20,547 INFO L168 Benchmark]: RCFGBuilder took 470.45 ms. Allocated memory is still 104.9 MB. Free memory was 66.5 MB in the beginning and 54.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:00:20,547 INFO L168 Benchmark]: TraceAbstraction took 6610.04 ms. Allocated memory was 104.9 MB in the beginning and 285.2 MB in the end (delta: 180.4 MB). Free memory was 53.3 MB in the beginning and 178.9 MB in the end (delta: -125.6 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:00:20,547 INFO L168 Benchmark]: Witness Printer took 69.23 ms. Allocated memory is still 285.2 MB. Free memory was 178.9 MB in the beginning and 176.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:00:20,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 523.70 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 46.9 MB in the beginning and 70.4 MB in the end (delta: -23.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.88 ms. Allocated memory is still 104.9 MB. Free memory was 70.4 MB in the beginning and 68.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.95 ms. Allocated memory is still 104.9 MB. Free memory was 68.3 MB in the beginning and 66.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 470.45 ms. Allocated memory is still 104.9 MB. Free memory was 66.5 MB in the beginning and 54.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6610.04 ms. Allocated memory was 104.9 MB in the beginning and 285.2 MB in the end (delta: 180.4 MB). Free memory was 53.3 MB in the beginning and 178.9 MB in the end (delta: -125.6 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. * Witness Printer took 69.23 ms. Allocated memory is still 285.2 MB. Free memory was 178.9 MB in the beginning and 176.8 MB in the end (delta: 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 127 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 193 SDslu, 174 SDs, 0 SdLazy, 521 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2326occurred in iteration=6, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 698 NumberOfCodeBlocks, 662 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 689 ConstructedInterpolants, 5 QuantifiedInterpolants, 1765 SizeOfPredicates, 6 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 50/67 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! [2021-10-28 09:00:20,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbebf709-5869-47cd-9bf8-ec58f9d9ef76/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...