./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c --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_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD --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 7c615a04683f0f8050243ec529c03e20511a5c93f5e823175650f11e9fefc562 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:01:57,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:01:57,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:01:57,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:01:57,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:01:57,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:01:57,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:01:57,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:01:57,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:01:57,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:01:57,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:01:57,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:01:57,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:01:57,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:01:57,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:01:57,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:01:57,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:01:57,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:01:57,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:01:57,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:01:57,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:01:57,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:01:57,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:01:57,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:01:57,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:01:57,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:01:57,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:01:57,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:01:57,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:01:57,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:01:57,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:01:57,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:01:57,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:01:57,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:01:57,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:01:57,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:01:57,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:01:57,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:01:57,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:01:57,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:01:57,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:01:57,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:01:57,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:01:57,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:01:57,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:01:57,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:01:57,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:01:57,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:01:57,625 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:01:57,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:01:57,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:01:57,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:01:57,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:01:57,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:01:57,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:01:57,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:01:57,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:01:57,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:01:57,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:01:57,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:01:57,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:01:57,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:01:57,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:01:57,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:01:57,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:57,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:01:57,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:01:57,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:01:57,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:01:57,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:01:57,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:01:57,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:01:57,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:01:57,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:01:57,636 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_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c615a04683f0f8050243ec529c03e20511a5c93f5e823175650f11e9fefc562 [2021-10-28 23:01:57,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:01:57,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:01:57,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:01:57,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:01:57,944 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:01:57,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2021-10-28 23:01:58,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/data/018b8bb5e/c70384fe1200408fad60518c19c33db3/FLAGfb1fc0ad7 [2021-10-28 23:01:58,580 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:01:58,581 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2021-10-28 23:01:58,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/data/018b8bb5e/c70384fe1200408fad60518c19c33db3/FLAGfb1fc0ad7 [2021-10-28 23:01:58,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/data/018b8bb5e/c70384fe1200408fad60518c19c33db3 [2021-10-28 23:01:58,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:01:58,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:01:58,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:58,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:01:58,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:01:58,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:58" (1/1) ... [2021-10-28 23:01:58,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a6dc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:58, skipping insertion in model container [2021-10-28 23:01:58,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:58" (1/1) ... [2021-10-28 23:01:58,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:01:59,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:01:59,267 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_5077671d-3b8c-4875-9011-7e959d667eb7/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c[2271,2284] [2021-10-28 23:01:59,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:59,307 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:01:59,349 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_5077671d-3b8c-4875-9011-7e959d667eb7/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c[2271,2284] [2021-10-28 23:01:59,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:59,399 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:01:59,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59 WrapperNode [2021-10-28 23:01:59,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:59,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:01:59,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:01:59,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:01:59,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:01:59,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:01:59,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:01:59,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:01:59,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:01:59,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:01:59,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:01:59,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:01:59,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (1/1) ... [2021-10-28 23:01:59,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:59,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:59,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:01:59,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:01:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:01:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:01:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:01:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 23:01:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 23:01:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 23:01:59,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 23:01:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:01:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:01:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:01:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:01:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:01:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:01:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:01:59,692 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 23:02:00,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:02:00,522 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-28 23:02:00,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:00 BoogieIcfgContainer [2021-10-28 23:02:00,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:02:00,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:02:00,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:02:00,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:02:00,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:01:58" (1/3) ... [2021-10-28 23:02:00,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c794485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:00, skipping insertion in model container [2021-10-28 23:02:00,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:59" (2/3) ... [2021-10-28 23:02:00,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c794485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:00, skipping insertion in model container [2021-10-28 23:02:00,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:00" (3/3) ... [2021-10-28 23:02:00,546 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2021-10-28 23:02:00,561 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:02:00,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:02:00,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:02:00,561 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:02:00,620 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,620 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,621 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,621 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,621 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,621 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,622 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,624 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,624 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,625 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,626 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,626 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,627 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,627 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,628 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,630 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,631 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,632 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,632 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,634 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,634 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,636 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,637 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,637 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,638 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,639 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,641 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,643 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,643 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,644 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,645 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,653 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,653 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,653 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,656 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,659 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,661 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,661 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,661 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,661 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,662 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,673 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,673 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,673 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,674 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,674 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,674 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,674 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,674 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,675 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,675 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:00,686 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 23:02:00,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:02:00,757 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 23:02:00,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:02:00,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 226 flow [2021-10-28 23:02:00,864 INFO L129 PetriNetUnfolder]: 9/103 cut-off events. [2021-10-28 23:02:00,864 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 23:02:00,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 9/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2021-10-28 23:02:00,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 105 transitions, 226 flow [2021-10-28 23:02:00,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 95 transitions, 202 flow [2021-10-28 23:02:00,914 INFO L129 PetriNetUnfolder]: 9/94 cut-off events. [2021-10-28 23:02:00,914 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 23:02:00,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:00,916 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:00,916 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:02:00,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:00,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1428906712, now seen corresponding path program 1 times [2021-10-28 23:02:00,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:00,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537498915] [2021-10-28 23:02:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:00,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:01,246 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 23:02:01,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:01,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537498915] [2021-10-28 23:02:01,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537498915] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:01,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:01,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:02:01,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111174158] [2021-10-28 23:02:01,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:02:01,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:01,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:02:01,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:02:01,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 105 [2021-10-28 23:02:01,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 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 23:02:01,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:01,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 105 [2021-10-28 23:02:01,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:01,341 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2021-10-28 23:02:01,345 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 23:02:01,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 6/89 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-10-28 23:02:01,352 INFO L132 encePairwiseOnDemand]: 99/105 looper letters, 0 selfloop transitions, 0 changer transitions 3/89 dead transitions. [2021-10-28 23:02:01,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 190 flow [2021-10-28 23:02:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:02:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 23:02:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2021-10-28 23:02:01,367 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9619047619047619 [2021-10-28 23:02:01,368 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2021-10-28 23:02:01,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2021-10-28 23:02:01,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:01,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2021-10-28 23:02:01,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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 23:02:01,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 23:02:01,390 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 23:02:01,393 INFO L186 Difference]: Start difference. First operand has 93 places, 95 transitions, 202 flow. Second operand 2 states and 202 transitions. [2021-10-28 23:02:01,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 190 flow [2021-10-28 23:02:01,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 23:02:01,411 INFO L242 Difference]: Finished difference. Result has 90 places, 86 transitions, 176 flow [2021-10-28 23:02:01,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=176, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2021-10-28 23:02:01,415 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, -3 predicate places. [2021-10-28 23:02:01,416 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 176 flow [2021-10-28 23:02:01,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 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 23:02:01,417 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:01,418 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:01,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:02:01,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:02:01,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash 112569318, now seen corresponding path program 1 times [2021-10-28 23:02:01,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:01,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874328016] [2021-10-28 23:02:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:01,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:01,774 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 23:02:01,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:01,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874328016] [2021-10-28 23:02:01,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874328016] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:01,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:01,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:02:01,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646154784] [2021-10-28 23:02:01,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:02:01,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:02:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:02:01,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 105 [2021-10-28 23:02:01,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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 23:02:01,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:01,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 105 [2021-10-28 23:02:01,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:01,885 INFO L129 PetriNetUnfolder]: 8/117 cut-off events. [2021-10-28 23:02:01,885 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:02:01,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 117 events. 8/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 143. Up to 13 conditions per place. [2021-10-28 23:02:01,887 INFO L132 encePairwiseOnDemand]: 99/105 looper letters, 14 selfloop transitions, 3 changer transitions 3/91 dead transitions. [2021-10-28 23:02:01,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 226 flow [2021-10-28 23:02:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:02:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 23:02:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2021-10-28 23:02:01,893 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8019047619047619 [2021-10-28 23:02:01,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2021-10-28 23:02:01,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2021-10-28 23:02:01,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:01,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2021-10-28 23:02:01,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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 23:02:01,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 23:02:01,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 23:02:01,902 INFO L186 Difference]: Start difference. First operand has 90 places, 86 transitions, 176 flow. Second operand 5 states and 421 transitions. [2021-10-28 23:02:01,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 226 flow [2021-10-28 23:02:01,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 23:02:01,907 INFO L242 Difference]: Finished difference. Result has 94 places, 88 transitions, 199 flow [2021-10-28 23:02:01,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2021-10-28 23:02:01,908 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 1 predicate places. [2021-10-28 23:02:01,909 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 199 flow [2021-10-28 23:02:01,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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 23:02:01,910 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:01,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:01,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:02:01,910 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:02:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2101046264, now seen corresponding path program 1 times [2021-10-28 23:02:01,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:01,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104475619] [2021-10-28 23:02:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:01,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:02,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:02,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104475619] [2021-10-28 23:02:02,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104475619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:02,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:02,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:02:02,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64856277] [2021-10-28 23:02:02,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:02:02,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:02:02,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:02:02,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2021-10-28 23:02:02,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 23:02:02,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:02,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2021-10-28 23:02:02,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:02,362 INFO L129 PetriNetUnfolder]: 51/287 cut-off events. [2021-10-28 23:02:02,362 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 23:02:02,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 287 events. 51/287 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1166 event pairs, 20 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 433. Up to 82 conditions per place. [2021-10-28 23:02:02,370 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 28 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2021-10-28 23:02:02,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 296 flow [2021-10-28 23:02:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:02:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:02:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 636 transitions. [2021-10-28 23:02:02,377 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2021-10-28 23:02:02,377 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 636 transitions. [2021-10-28 23:02:02,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 636 transitions. [2021-10-28 23:02:02,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:02,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 636 transitions. [2021-10-28 23:02:02,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.5) internal successors, (636), 8 states have internal predecessors, (636), 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 23:02:02,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 23:02:02,387 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 23:02:02,387 INFO L186 Difference]: Start difference. First operand has 94 places, 88 transitions, 199 flow. Second operand 8 states and 636 transitions. [2021-10-28 23:02:02,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 296 flow [2021-10-28 23:02:02,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 289 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-28 23:02:02,401 INFO L242 Difference]: Finished difference. Result has 99 places, 91 transitions, 228 flow [2021-10-28 23:02:02,401 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2021-10-28 23:02:02,401 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 6 predicate places. [2021-10-28 23:02:02,402 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 228 flow [2021-10-28 23:02:02,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 23:02:02,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:02,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:02,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:02:02,404 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:02:02,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:02,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1112933770, now seen corresponding path program 1 times [2021-10-28 23:02:02,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:02,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405624288] [2021-10-28 23:02:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:02,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:02,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:02,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405624288] [2021-10-28 23:02:02,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405624288] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:02,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:02,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:02:02,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740814570] [2021-10-28 23:02:02,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:02:02,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:02:02,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:02:02,598 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2021-10-28 23:02:02,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 23:02:02,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:02,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2021-10-28 23:02:02,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:02,766 INFO L129 PetriNetUnfolder]: 49/237 cut-off events. [2021-10-28 23:02:02,767 INFO L130 PetriNetUnfolder]: For 28/31 co-relation queries the response was YES. [2021-10-28 23:02:02,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 237 events. 49/237 cut-off events. For 28/31 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 749 event pairs, 23 based on Foata normal form. 3/224 useless extension candidates. Maximal degree in co-relation 404. Up to 90 conditions per place. [2021-10-28 23:02:02,771 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 22 selfloop transitions, 6 changer transitions 7/99 dead transitions. [2021-10-28 23:02:02,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 99 transitions, 313 flow [2021-10-28 23:02:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:02:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:02:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2021-10-28 23:02:02,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2021-10-28 23:02:02,775 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2021-10-28 23:02:02,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2021-10-28 23:02:02,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:02,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2021-10-28 23:02:02,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 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 23:02:02,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 23:02:02,785 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 23:02:02,785 INFO L186 Difference]: Start difference. First operand has 99 places, 91 transitions, 228 flow. Second operand 8 states and 634 transitions. [2021-10-28 23:02:02,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 99 transitions, 313 flow [2021-10-28 23:02:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 303 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 23:02:02,791 INFO L242 Difference]: Finished difference. Result has 104 places, 89 transitions, 222 flow [2021-10-28 23:02:02,792 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2021-10-28 23:02:02,792 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 11 predicate places. [2021-10-28 23:02:02,793 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 222 flow [2021-10-28 23:02:02,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 23:02:02,793 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:02,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:02,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:02:02,794 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:02:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash 176132479, now seen corresponding path program 1 times [2021-10-28 23:02:02,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:02,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54522155] [2021-10-28 23:02:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:02,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:02:02,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:02,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54522155] [2021-10-28 23:02:02,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54522155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:02,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097728575] [2021-10-28 23:02:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:02,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:02,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:02,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:03,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:02:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:03,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:02:03,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:02:03,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097728575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:03,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:03,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-10-28 23:02:03,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785947921] [2021-10-28 23:02:03,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:02:03,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:03,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:02:03,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:02:03,626 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2021-10-28 23:02:03,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 222 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 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 23:02:03,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:03,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2021-10-28 23:02:03,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:03,832 INFO L129 PetriNetUnfolder]: 51/202 cut-off events. [2021-10-28 23:02:03,832 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-10-28 23:02:03,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 202 events. 51/202 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 563 event pairs, 14 based on Foata normal form. 5/203 useless extension candidates. Maximal degree in co-relation 384. Up to 63 conditions per place. [2021-10-28 23:02:03,836 INFO L132 encePairwiseOnDemand]: 97/105 looper letters, 27 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2021-10-28 23:02:03,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 314 flow [2021-10-28 23:02:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:02:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:02:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2021-10-28 23:02:03,840 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2021-10-28 23:02:03,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2021-10-28 23:02:03,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2021-10-28 23:02:03,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:03,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2021-10-28 23:02:03,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 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 23:02:03,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 23:02:03,849 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 23:02:03,849 INFO L186 Difference]: Start difference. First operand has 104 places, 89 transitions, 222 flow. Second operand 8 states and 634 transitions. [2021-10-28 23:02:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 314 flow [2021-10-28 23:02:03,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 288 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-10-28 23:02:03,858 INFO L242 Difference]: Finished difference. Result has 100 places, 91 transitions, 228 flow [2021-10-28 23:02:03,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2021-10-28 23:02:03,859 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 7 predicate places. [2021-10-28 23:02:03,859 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 228 flow [2021-10-28 23:02:03,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 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 23:02:03,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:03,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:03,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:04,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:04,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:02:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:04,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1549635063, now seen corresponding path program 1 times [2021-10-28 23:02:04,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:04,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65443616] [2021-10-28 23:02:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:04,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:02:04,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:04,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65443616] [2021-10-28 23:02:04,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65443616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:04,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924323431] [2021-10-28 23:02:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:04,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:04,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:04,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:04,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:02:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:04,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:02:04,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:02:04,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924323431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:04,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:04,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-10-28 23:02:04,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884579159] [2021-10-28 23:02:04,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:02:04,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:02:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:02:04,683 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2021-10-28 23:02:04,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 228 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 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 23:02:04,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:04,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2021-10-28 23:02:04,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:04,866 INFO L129 PetriNetUnfolder]: 45/207 cut-off events. [2021-10-28 23:02:04,867 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-10-28 23:02:04,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 207 events. 45/207 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 637 event pairs, 17 based on Foata normal form. 2/182 useless extension candidates. Maximal degree in co-relation 363. Up to 57 conditions per place. [2021-10-28 23:02:04,869 INFO L132 encePairwiseOnDemand]: 97/105 looper letters, 27 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2021-10-28 23:02:04,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 99 transitions, 316 flow [2021-10-28 23:02:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:02:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:02:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2021-10-28 23:02:04,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2021-10-28 23:02:04,873 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2021-10-28 23:02:04,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2021-10-28 23:02:04,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:04,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2021-10-28 23:02:04,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 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 23:02:04,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 23:02:04,883 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 23:02:04,883 INFO L186 Difference]: Start difference. First operand has 100 places, 91 transitions, 228 flow. Second operand 8 states and 634 transitions. [2021-10-28 23:02:04,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 99 transitions, 316 flow [2021-10-28 23:02:04,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 306 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 23:02:04,889 INFO L242 Difference]: Finished difference. Result has 103 places, 92 transitions, 240 flow [2021-10-28 23:02:04,889 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2021-10-28 23:02:04,889 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 10 predicate places. [2021-10-28 23:02:04,891 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 240 flow [2021-10-28 23:02:04,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 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 23:02:04,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:04,896 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, 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 23:02:04,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:05,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 23:02:05,111 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:02:05,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2073614047, now seen corresponding path program 1 times [2021-10-28 23:02:05,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:05,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697362091] [2021-10-28 23:02:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:05,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:02:05,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:05,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697362091] [2021-10-28 23:02:05,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697362091] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:05,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:05,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:02:05,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536303093] [2021-10-28 23:02:05,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:02:05,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:02:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:02:05,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 105 [2021-10-28 23:02:05,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 240 flow. Second operand has 9 states, 9 states have (on average 69.22222222222223) internal successors, (623), 9 states have internal predecessors, (623), 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 23:02:05,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:05,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 105 [2021-10-28 23:02:05,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:05,526 INFO L129 PetriNetUnfolder]: 9/102 cut-off events. [2021-10-28 23:02:05,526 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2021-10-28 23:02:05,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 102 events. 9/102 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 3 based on Foata normal form. 6/107 useless extension candidates. Maximal degree in co-relation 172. Up to 15 conditions per place. [2021-10-28 23:02:05,527 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2021-10-28 23:02:05,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 77 transitions, 247 flow [2021-10-28 23:02:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:02:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:02:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 617 transitions. [2021-10-28 23:02:05,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6529100529100529 [2021-10-28 23:02:05,531 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 617 transitions. [2021-10-28 23:02:05,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 617 transitions. [2021-10-28 23:02:05,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:05,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 617 transitions. [2021-10-28 23:02:05,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.55555555555556) internal successors, (617), 9 states have internal predecessors, (617), 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 23:02:05,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 23:02:05,539 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 23:02:05,539 INFO L186 Difference]: Start difference. First operand has 103 places, 92 transitions, 240 flow. Second operand 9 states and 617 transitions. [2021-10-28 23:02:05,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 77 transitions, 247 flow [2021-10-28 23:02:05,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 77 transitions, 234 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-10-28 23:02:05,542 INFO L242 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-10-28 23:02:05,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-10-28 23:02:05,543 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, -3 predicate places. [2021-10-28 23:02:05,543 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-10-28 23:02:05,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.22222222222223) internal successors, (623), 9 states have internal predecessors, (623), 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 23:02:05,546 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:02:05,547 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:02:05,547 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:02:05,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:02:05,551 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:05,554 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:02:05,554 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:02:05,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:02:05 BasicIcfg [2021-10-28 23:02:05,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:02:05,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:02:05,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:02:05,557 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:02:05,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:00" (3/4) ... [2021-10-28 23:02:05,562 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:02:05,568 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 23:02:05,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 23:02:05,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-28 23:02:05,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:02:05,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:02:05,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:02:05,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:02:05,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:02:05,627 INFO L168 Benchmark]: Toolchain (without parser) took 6665.35 ms. Allocated memory was 123.7 MB in the beginning and 151.0 MB in the end (delta: 27.3 MB). Free memory was 89.4 MB in the beginning and 64.4 MB in the end (delta: 25.0 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:05,631 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 64.5 MB in the beginning and 64.5 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:05,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.85 ms. Allocated memory is still 123.7 MB. Free memory was 89.2 MB in the beginning and 98.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:05,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.28 ms. Allocated memory is still 123.7 MB. Free memory was 98.6 MB in the beginning and 96.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:05,632 INFO L168 Benchmark]: Boogie Preprocessor took 72.08 ms. Allocated memory is still 123.7 MB. Free memory was 96.6 MB in the beginning and 95.7 MB in the end (delta: 922.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:05,633 INFO L168 Benchmark]: RCFGBuilder took 967.07 ms. Allocated memory is still 123.7 MB. Free memory was 95.1 MB in the beginning and 72.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:05,633 INFO L168 Benchmark]: TraceAbstraction took 5030.04 ms. Allocated memory was 123.7 MB in the beginning and 151.0 MB in the end (delta: 27.3 MB). Free memory was 72.0 MB in the beginning and 67.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:05,633 INFO L168 Benchmark]: Witness Printer took 68.38 ms. Allocated memory is still 151.0 MB. Free memory was 67.6 MB in the beginning and 64.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:05,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 64.5 MB in the beginning and 64.5 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 433.85 ms. Allocated memory is still 123.7 MB. Free memory was 89.2 MB in the beginning and 98.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.28 ms. Allocated memory is still 123.7 MB. Free memory was 98.6 MB in the beginning and 96.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.08 ms. Allocated memory is still 123.7 MB. Free memory was 96.6 MB in the beginning and 95.7 MB in the end (delta: 922.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 967.07 ms. Allocated memory is still 123.7 MB. Free memory was 95.1 MB in the beginning and 72.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5030.04 ms. Allocated memory was 123.7 MB in the beginning and 151.0 MB in the end (delta: 27.3 MB). Free memory was 72.0 MB in the beginning and 67.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * Witness Printer took 68.38 ms. Allocated memory is still 151.0 MB. Free memory was 67.6 MB in the beginning and 64.4 MB in the end (delta: 3.1 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: 81]: 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 5 procedures, 117 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: 4.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 320 SDslu, 71 SDs, 0 SdLazy, 383 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 171 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=6, InterpolantAutomatonStates: 48, 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, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 696 NumberOfCodeBlocks, 696 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 687 ConstructedInterpolants, 0 QuantifiedInterpolants, 1577 SizeOfPredicates, 10 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 9/13 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 23:02:05,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5077671d-3b8c-4875-9011-7e959d667eb7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...