./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be --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 7d1f6c99e446a31775618762a65cbcd23c4647ae5df2c86db89700297960885b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:32:55,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:32:55,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:32:55,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:32:55,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:32:55,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:32:55,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:32:55,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:32:55,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:32:55,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:32:55,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:32:55,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:32:55,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:32:55,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:32:55,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:32:55,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:32:55,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:32:55,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:32:55,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:32:55,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:32:55,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:32:55,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:32:55,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:32:55,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:32:55,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:32:55,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:32:55,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:32:55,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:32:55,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:32:55,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:32:55,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:32:55,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:32:55,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:32:55,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:32:55,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:32:55,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:32:55,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:32:55,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:32:55,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:32:55,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:32:55,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:32:55,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:32:55,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:32:55,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:32:55,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:32:55,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:32:55,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:32:55,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:32:55,417 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:32:55,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:32:55,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:32:55,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:32:55,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:32:55,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:32:55,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:32:55,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:32:55,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:32:55,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:32:55,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:32:55,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:32:55,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:32:55,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:32:55,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:32:55,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:32:55,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:32:55,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:32:55,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:32:55,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:32:55,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:32:55,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:32:55,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:32:55,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:32:55,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:32:55,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:32:55,428 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_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d1f6c99e446a31775618762a65cbcd23c4647ae5df2c86db89700297960885b [2021-10-21 19:32:55,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:32:55,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:32:55,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:32:55,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:32:55,864 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:32:55,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2021-10-21 19:32:55,952 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/data/dbdef1db7/604acf25b1b34ee5bfee43e5615ebcfb/FLAG38a972c59 [2021-10-21 19:32:56,505 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:32:56,506 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2021-10-21 19:32:56,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/data/dbdef1db7/604acf25b1b34ee5bfee43e5615ebcfb/FLAG38a972c59 [2021-10-21 19:32:56,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/data/dbdef1db7/604acf25b1b34ee5bfee43e5615ebcfb [2021-10-21 19:32:56,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:32:56,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:32:56,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:32:56,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:32:56,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:32:56,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:32:56" (1/1) ... [2021-10-21 19:32:56,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7336fbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:56, skipping insertion in model container [2021-10-21 19:32:56,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:32:56" (1/1) ... [2021-10-21 19:32:56,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:32:56,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:32:57,122 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_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2282,2295] [2021-10-21 19:32:57,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:32:57,134 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:32:57,159 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_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2282,2295] [2021-10-21 19:32:57,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:32:57,175 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:32:57,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57 WrapperNode [2021-10-21 19:32:57,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:32:57,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:32:57,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:32:57,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:32:57,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:32:57,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:32:57,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:32:57,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:32:57,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:32:57,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:32:57,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:32:57,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:32:57,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (1/1) ... [2021-10-21 19:32:57,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:32:57,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:32:57,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:32:57,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:32:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 19:32:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 19:32:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-21 19:32:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-21 19:32:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:32:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:32:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:32:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 19:32:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 19:32:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:32:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:32:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:32:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:32:57,400 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:32:57,771 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:32:57,771 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:32:57,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:32:57 BoogieIcfgContainer [2021-10-21 19:32:57,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:32:57,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:32:57,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:32:57,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:32:57,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:32:56" (1/3) ... [2021-10-21 19:32:57,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdbc4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:32:57, skipping insertion in model container [2021-10-21 19:32:57,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:57" (2/3) ... [2021-10-21 19:32:57,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdbc4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:32:57, skipping insertion in model container [2021-10-21 19:32:57,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:32:57" (3/3) ... [2021-10-21 19:32:57,784 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2021-10-21 19:32:57,789 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:32:57,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:32:57,790 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:32:57,790 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:32:57,872 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,873 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,873 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,873 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,874 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,874 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,875 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,875 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,876 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,877 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,877 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,877 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,878 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,878 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,878 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,879 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,880 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,880 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,881 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,881 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,883 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,883 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,883 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,884 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,884 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,884 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,898 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,898 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,908 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,910 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,910 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:57,932 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-21 19:32:57,984 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:32:57,992 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 [2021-10-21 19:32:57,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 19:32:58,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 89 transitions, 194 flow [2021-10-21 19:32:58,104 INFO L129 PetriNetUnfolder]: 11/87 cut-off events. [2021-10-21 19:32:58,109 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-21 19:32:58,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 11/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2021-10-21 19:32:58,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 89 transitions, 194 flow [2021-10-21 19:32:58,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 79 transitions, 170 flow [2021-10-21 19:32:58,164 INFO L129 PetriNetUnfolder]: 11/78 cut-off events. [2021-10-21 19:32:58,164 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-21 19:32:58,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:32:58,165 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] [2021-10-21 19:32:58,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:32:58,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:32:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1599761408, now seen corresponding path program 1 times [2021-10-21 19:32:58,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:32:58,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87250545] [2021-10-21 19:32:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:58,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:32:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:32:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:32:58,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:32:58,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87250545] [2021-10-21 19:32:58,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87250545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:32:58,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:32:58,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:32:58,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450450039] [2021-10-21 19:32:58,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:32:58,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:32:58,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:32:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:32:58,427 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 89 [2021-10-21 19:32:58,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 170 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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) [2021-10-21 19:32:58,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:32:58,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 89 [2021-10-21 19:32:58,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:32:58,486 INFO L129 PetriNetUnfolder]: 8/76 cut-off events. [2021-10-21 19:32:58,486 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-21 19:32:58,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 8/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 3/70 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2021-10-21 19:32:58,489 INFO L132 encePairwiseOnDemand]: 86/89 looper letters, 0 selfloop transitions, 0 changer transitions 1/76 dead transitions. [2021-10-21 19:32:58,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 164 flow [2021-10-21 19:32:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:32:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-21 19:32:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 173 transitions. [2021-10-21 19:32:58,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9719101123595506 [2021-10-21 19:32:58,506 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 173 transitions. [2021-10-21 19:32:58,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 173 transitions. [2021-10-21 19:32:58,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:32:58,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 173 transitions. [2021-10-21 19:32:58,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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) [2021-10-21 19:32:58,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2021-10-21 19:32:58,531 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2021-10-21 19:32:58,533 INFO L186 Difference]: Start difference. First operand has 75 places, 79 transitions, 170 flow. Second operand 2 states and 173 transitions. [2021-10-21 19:32:58,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 164 flow [2021-10-21 19:32:58,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 156 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-21 19:32:58,555 INFO L242 Difference]: Finished difference. Result has 72 places, 75 transitions, 154 flow [2021-10-21 19:32:58,557 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2021-10-21 19:32:58,558 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, -3 predicate places. [2021-10-21 19:32:58,559 INFO L470 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 154 flow [2021-10-21 19:32:58,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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) [2021-10-21 19:32:58,566 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:32:58,567 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] [2021-10-21 19:32:58,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:32:58,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:32:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:32:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1850734017, now seen corresponding path program 1 times [2021-10-21 19:32:58,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:32:58,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779606004] [2021-10-21 19:32:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:58,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:32:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:32:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:32:58,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:32:58,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779606004] [2021-10-21 19:32:58,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779606004] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:32:58,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:32:58,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:32:58,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292317831] [2021-10-21 19:32:58,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:32:58,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:32:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:32:58,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:32:58,786 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 89 [2021-10-21 19:32:58,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2021-10-21 19:32:58,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:32:58,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 89 [2021-10-21 19:32:58,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:32:58,849 INFO L129 PetriNetUnfolder]: 11/88 cut-off events. [2021-10-21 19:32:58,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:32:58,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 88 events. 11/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 97. Up to 7 conditions per place. [2021-10-21 19:32:58,852 INFO L132 encePairwiseOnDemand]: 86/89 looper letters, 5 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2021-10-21 19:32:58,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 172 flow [2021-10-21 19:32:58,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:32:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:32:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2021-10-21 19:32:58,855 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9288389513108615 [2021-10-21 19:32:58,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2021-10-21 19:32:58,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2021-10-21 19:32:58,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:32:58,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2021-10-21 19:32:58,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2021-10-21 19:32:58,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-10-21 19:32:58,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-10-21 19:32:58,861 INFO L186 Difference]: Start difference. First operand has 72 places, 75 transitions, 154 flow. Second operand 3 states and 248 transitions. [2021-10-21 19:32:58,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 172 flow [2021-10-21 19:32:58,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-21 19:32:58,868 INFO L242 Difference]: Finished difference. Result has 74 places, 76 transitions, 166 flow [2021-10-21 19:32:58,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2021-10-21 19:32:58,869 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2021-10-21 19:32:58,869 INFO L470 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 166 flow [2021-10-21 19:32:58,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2021-10-21 19:32:58,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:32:58,870 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] [2021-10-21 19:32:58,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:32:58,871 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:32:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:32:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1761700709, now seen corresponding path program 1 times [2021-10-21 19:32:58,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:32:58,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412626938] [2021-10-21 19:32:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:58,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:32:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:32:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:32:59,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:32:59,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412626938] [2021-10-21 19:32:59,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412626938] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:32:59,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:32:59,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:32:59,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581396191] [2021-10-21 19:32:59,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:32:59,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:32:59,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:32:59,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:32:59,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 89 [2021-10-21 19:32:59,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2021-10-21 19:32:59,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:32:59,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 89 [2021-10-21 19:32:59,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:32:59,117 INFO L129 PetriNetUnfolder]: 14/101 cut-off events. [2021-10-21 19:32:59,117 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-21 19:32:59,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 101 events. 14/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 115. Up to 7 conditions per place. [2021-10-21 19:32:59,123 INFO L132 encePairwiseOnDemand]: 86/89 looper letters, 5 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2021-10-21 19:32:59,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 184 flow [2021-10-21 19:32:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:32:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:32:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2021-10-21 19:32:59,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9288389513108615 [2021-10-21 19:32:59,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2021-10-21 19:32:59,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2021-10-21 19:32:59,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:32:59,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2021-10-21 19:32:59,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2021-10-21 19:32:59,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-10-21 19:32:59,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-10-21 19:32:59,135 INFO L186 Difference]: Start difference. First operand has 74 places, 76 transitions, 166 flow. Second operand 3 states and 248 transitions. [2021-10-21 19:32:59,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 184 flow [2021-10-21 19:32:59,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:32:59,140 INFO L242 Difference]: Finished difference. Result has 76 places, 77 transitions, 176 flow [2021-10-21 19:32:59,141 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2021-10-21 19:32:59,141 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2021-10-21 19:32:59,141 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 176 flow [2021-10-21 19:32:59,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2021-10-21 19:32:59,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:32:59,142 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] [2021-10-21 19:32:59,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:32:59,143 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:32:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:32:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash -775390733, now seen corresponding path program 1 times [2021-10-21 19:32:59,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:32:59,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054142824] [2021-10-21 19:32:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:59,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:32:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:32:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:32:59,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:32:59,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054142824] [2021-10-21 19:32:59,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054142824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:32:59,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:32:59,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:32:59,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108205447] [2021-10-21 19:32:59,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:32:59,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:32:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:32:59,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:32:59,326 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 89 [2021-10-21 19:32:59,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2021-10-21 19:32:59,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:32:59,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 89 [2021-10-21 19:32:59,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:32:59,424 INFO L129 PetriNetUnfolder]: 10/115 cut-off events. [2021-10-21 19:32:59,425 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-21 19:32:59,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 115 events. 10/115 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 141. Up to 7 conditions per place. [2021-10-21 19:32:59,427 INFO L132 encePairwiseOnDemand]: 82/89 looper letters, 4 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2021-10-21 19:32:59,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 78 transitions, 194 flow [2021-10-21 19:32:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:32:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:32:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2021-10-21 19:32:59,450 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9101123595505618 [2021-10-21 19:32:59,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2021-10-21 19:32:59,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2021-10-21 19:32:59,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:32:59,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2021-10-21 19:32:59,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2021-10-21 19:32:59,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-10-21 19:32:59,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-10-21 19:32:59,455 INFO L186 Difference]: Start difference. First operand has 76 places, 77 transitions, 176 flow. Second operand 4 states and 324 transitions. [2021-10-21 19:32:59,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 78 transitions, 194 flow [2021-10-21 19:32:59,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:32:59,464 INFO L242 Difference]: Finished difference. Result has 80 places, 78 transitions, 199 flow [2021-10-21 19:32:59,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2021-10-21 19:32:59,465 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2021-10-21 19:32:59,466 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 199 flow [2021-10-21 19:32:59,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2021-10-21 19:32:59,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:32:59,467 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:32:59,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:32:59,468 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:32:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:32:59,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1849622725, now seen corresponding path program 1 times [2021-10-21 19:32:59,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:32:59,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020494913] [2021-10-21 19:32:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:59,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:32:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:32:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 19:32:59,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:32:59,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020494913] [2021-10-21 19:32:59,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020494913] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:32:59,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:32:59,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:32:59,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099410268] [2021-10-21 19:32:59,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:32:59,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:32:59,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:32:59,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:32:59,710 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 89 [2021-10-21 19:32:59,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2021-10-21 19:32:59,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:32:59,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 89 [2021-10-21 19:32:59,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:32:59,803 INFO L129 PetriNetUnfolder]: 6/139 cut-off events. [2021-10-21 19:32:59,803 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-21 19:32:59,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 139 events. 6/139 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 275 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2021-10-21 19:32:59,806 INFO L132 encePairwiseOnDemand]: 82/89 looper letters, 4 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2021-10-21 19:32:59,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 217 flow [2021-10-21 19:32:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:32:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:32:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2021-10-21 19:32:59,809 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9101123595505618 [2021-10-21 19:32:59,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2021-10-21 19:32:59,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2021-10-21 19:32:59,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:32:59,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2021-10-21 19:32:59,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2021-10-21 19:32:59,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-10-21 19:32:59,814 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-10-21 19:32:59,814 INFO L186 Difference]: Start difference. First operand has 80 places, 78 transitions, 199 flow. Second operand 4 states and 324 transitions. [2021-10-21 19:32:59,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 217 flow [2021-10-21 19:32:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:32:59,820 INFO L242 Difference]: Finished difference. Result has 84 places, 79 transitions, 223 flow [2021-10-21 19:32:59,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2021-10-21 19:32:59,821 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2021-10-21 19:32:59,821 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 223 flow [2021-10-21 19:32:59,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2021-10-21 19:32:59,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:32:59,823 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:32:59,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:32:59,824 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:32:59,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:32:59,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1488057198, now seen corresponding path program 1 times [2021-10-21 19:32:59,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:32:59,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496100912] [2021-10-21 19:32:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:59,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:32:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:33:00,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:00,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496100912] [2021-10-21 19:33:00,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496100912] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:00,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110385067] [2021-10-21 19:33:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:00,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:00,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:00,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:00,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:33:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:00,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:33:00,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:33:00,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110385067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:00,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:33:00,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:33:00,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734349937] [2021-10-21 19:33:00,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:33:00,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:00,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:33:00,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:33:00,760 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 89 [2021-10-21 19:33:00,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2021-10-21 19:33:00,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:33:00,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 89 [2021-10-21 19:33:00,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:33:00,944 INFO L129 PetriNetUnfolder]: 52/468 cut-off events. [2021-10-21 19:33:00,944 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2021-10-21 19:33:00,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 468 events. 52/468 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2432 event pairs, 8 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 750. Up to 57 conditions per place. [2021-10-21 19:33:00,954 INFO L132 encePairwiseOnDemand]: 81/89 looper letters, 16 selfloop transitions, 7 changer transitions 3/96 dead transitions. [2021-10-21 19:33:00,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 96 transitions, 309 flow [2021-10-21 19:33:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:33:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:33:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2021-10-21 19:33:00,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8860353130016051 [2021-10-21 19:33:00,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 552 transitions. [2021-10-21 19:33:00,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 552 transitions. [2021-10-21 19:33:00,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:33:00,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 552 transitions. [2021-10-21 19:33:00,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-10-21 19:33:00,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:00,967 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:00,967 INFO L186 Difference]: Start difference. First operand has 84 places, 79 transitions, 223 flow. Second operand 7 states and 552 transitions. [2021-10-21 19:33:00,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 96 transitions, 309 flow [2021-10-21 19:33:00,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:33:00,978 INFO L242 Difference]: Finished difference. Result has 94 places, 85 transitions, 273 flow [2021-10-21 19:33:00,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2021-10-21 19:33:00,979 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2021-10-21 19:33:00,979 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 273 flow [2021-10-21 19:33:00,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2021-10-21 19:33:00,980 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:33:00,980 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:01,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-21 19:33:01,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:01,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:33:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:01,201 INFO L82 PathProgramCache]: Analyzing trace with hash 693944426, now seen corresponding path program 2 times [2021-10-21 19:33:01,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:01,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013737720] [2021-10-21 19:33:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:01,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:33:01,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:01,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013737720] [2021-10-21 19:33:01,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013737720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:01,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111882728] [2021-10-21 19:33:01,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:33:01,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:01,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:01,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:33:01,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:33:01,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:33:01,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:33:01,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:33:01,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111882728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:01,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:33:01,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:33:01,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294404142] [2021-10-21 19:33:01,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:33:01,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:33:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:33:01,906 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 89 [2021-10-21 19:33:01,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2021-10-21 19:33:01,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:33:01,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 89 [2021-10-21 19:33:01,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:33:02,147 INFO L129 PetriNetUnfolder]: 72/615 cut-off events. [2021-10-21 19:33:02,147 INFO L130 PetriNetUnfolder]: For 186/200 co-relation queries the response was YES. [2021-10-21 19:33:02,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 615 events. 72/615 cut-off events. For 186/200 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3776 event pairs, 0 based on Foata normal form. 3/586 useless extension candidates. Maximal degree in co-relation 1155. Up to 96 conditions per place. [2021-10-21 19:33:02,157 INFO L132 encePairwiseOnDemand]: 81/89 looper letters, 22 selfloop transitions, 11 changer transitions 3/106 dead transitions. [2021-10-21 19:33:02,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 106 transitions, 430 flow [2021-10-21 19:33:02,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:33:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:33:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2021-10-21 19:33:02,161 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8860353130016051 [2021-10-21 19:33:02,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 552 transitions. [2021-10-21 19:33:02,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 552 transitions. [2021-10-21 19:33:02,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:33:02,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 552 transitions. [2021-10-21 19:33:02,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-10-21 19:33:02,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:02,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:02,168 INFO L186 Difference]: Start difference. First operand has 94 places, 85 transitions, 273 flow. Second operand 7 states and 552 transitions. [2021-10-21 19:33:02,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 106 transitions, 430 flow [2021-10-21 19:33:02,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 416 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-10-21 19:33:02,177 INFO L242 Difference]: Finished difference. Result has 101 places, 95 transitions, 378 flow [2021-10-21 19:33:02,178 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2021-10-21 19:33:02,178 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 26 predicate places. [2021-10-21 19:33:02,179 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 378 flow [2021-10-21 19:33:02,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2021-10-21 19:33:02,179 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:33:02,180 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:02,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:02,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:02,401 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:33:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:02,402 INFO L82 PathProgramCache]: Analyzing trace with hash -649983784, now seen corresponding path program 3 times [2021-10-21 19:33:02,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:02,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907164544] [2021-10-21 19:33:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:02,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:33:02,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:02,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907164544] [2021-10-21 19:33:02,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907164544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:02,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363207396] [2021-10-21 19:33:02,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:33:02,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:02,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:02,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:02,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:33:02,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:33:02,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:33:02,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:33:02,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:33:03,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363207396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:03,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:33:03,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 19:33:03,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077320043] [2021-10-21 19:33:03,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:33:03,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:33:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:33:03,112 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 89 [2021-10-21 19:33:03,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 378 flow. Second operand has 8 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 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) [2021-10-21 19:33:03,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:33:03,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 89 [2021-10-21 19:33:03,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:33:03,330 INFO L129 PetriNetUnfolder]: 74/620 cut-off events. [2021-10-21 19:33:03,330 INFO L130 PetriNetUnfolder]: For 431/469 co-relation queries the response was YES. [2021-10-21 19:33:03,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 620 events. 74/620 cut-off events. For 431/469 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3804 event pairs, 0 based on Foata normal form. 23/613 useless extension candidates. Maximal degree in co-relation 1279. Up to 57 conditions per place. [2021-10-21 19:33:03,348 INFO L132 encePairwiseOnDemand]: 81/89 looper letters, 12 selfloop transitions, 25 changer transitions 3/110 dead transitions. [2021-10-21 19:33:03,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 110 transitions, 526 flow [2021-10-21 19:33:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:33:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-21 19:33:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 625 transitions. [2021-10-21 19:33:03,353 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778089887640449 [2021-10-21 19:33:03,353 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 625 transitions. [2021-10-21 19:33:03,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 625 transitions. [2021-10-21 19:33:03,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:33:03,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 625 transitions. [2021-10-21 19:33:03,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.125) internal successors, (625), 8 states have internal predecessors, (625), 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) [2021-10-21 19:33:03,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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) [2021-10-21 19:33:03,391 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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) [2021-10-21 19:33:03,391 INFO L186 Difference]: Start difference. First operand has 101 places, 95 transitions, 378 flow. Second operand 8 states and 625 transitions. [2021-10-21 19:33:03,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 110 transitions, 526 flow [2021-10-21 19:33:03,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 110 transitions, 508 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-10-21 19:33:03,401 INFO L242 Difference]: Finished difference. Result has 107 places, 99 transitions, 465 flow [2021-10-21 19:33:03,401 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2021-10-21 19:33:03,402 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 32 predicate places. [2021-10-21 19:33:03,402 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 465 flow [2021-10-21 19:33:03,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 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) [2021-10-21 19:33:03,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:33:03,403 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:03,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:03,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 19:33:03,629 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:33:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:03,630 INFO L82 PathProgramCache]: Analyzing trace with hash 200094575, now seen corresponding path program 4 times [2021-10-21 19:33:03,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:03,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277169987] [2021-10-21 19:33:03,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:03,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 19:33:03,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:03,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277169987] [2021-10-21 19:33:03,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277169987] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:33:03,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:33:03,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:33:03,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067296802] [2021-10-21 19:33:03,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:33:03,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:33:03,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:33:03,671 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 89 [2021-10-21 19:33:03,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-10-21 19:33:03,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:33:03,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 89 [2021-10-21 19:33:03,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:33:03,784 INFO L129 PetriNetUnfolder]: 74/563 cut-off events. [2021-10-21 19:33:03,784 INFO L130 PetriNetUnfolder]: For 493/504 co-relation queries the response was YES. [2021-10-21 19:33:03,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 563 events. 74/563 cut-off events. For 493/504 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3284 event pairs, 0 based on Foata normal form. 12/545 useless extension candidates. Maximal degree in co-relation 1230. Up to 57 conditions per place. [2021-10-21 19:33:03,795 INFO L132 encePairwiseOnDemand]: 85/89 looper letters, 3 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2021-10-21 19:33:03,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 481 flow [2021-10-21 19:33:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:33:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:33:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2021-10-21 19:33:03,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9250936329588015 [2021-10-21 19:33:03,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2021-10-21 19:33:03,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2021-10-21 19:33:03,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:33:03,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2021-10-21 19:33:03,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-10-21 19:33:03,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-10-21 19:33:03,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-10-21 19:33:03,801 INFO L186 Difference]: Start difference. First operand has 107 places, 99 transitions, 465 flow. Second operand 3 states and 247 transitions. [2021-10-21 19:33:03,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 481 flow [2021-10-21 19:33:03,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 460 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-10-21 19:33:03,810 INFO L242 Difference]: Finished difference. Result has 105 places, 100 transitions, 466 flow [2021-10-21 19:33:03,810 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2021-10-21 19:33:03,811 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 30 predicate places. [2021-10-21 19:33:03,811 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 466 flow [2021-10-21 19:33:03,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-10-21 19:33:03,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:33:03,812 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:03,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:33:03,813 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:33:03,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:03,813 INFO L82 PathProgramCache]: Analyzing trace with hash 714384394, now seen corresponding path program 5 times [2021-10-21 19:33:03,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:03,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412196859] [2021-10-21 19:33:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:03,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-21 19:33:03,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:03,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412196859] [2021-10-21 19:33:03,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412196859] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:33:03,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:33:03,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:33:03,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758645143] [2021-10-21 19:33:03,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:33:03,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:33:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:33:03,862 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 89 [2021-10-21 19:33:03,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-10-21 19:33:03,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:33:03,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 89 [2021-10-21 19:33:03,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:33:03,986 INFO L129 PetriNetUnfolder]: 74/537 cut-off events. [2021-10-21 19:33:03,986 INFO L130 PetriNetUnfolder]: For 470/481 co-relation queries the response was YES. [2021-10-21 19:33:03,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 537 events. 74/537 cut-off events. For 470/481 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3040 event pairs, 0 based on Foata normal form. 19/526 useless extension candidates. Maximal degree in co-relation 1244. Up to 57 conditions per place. [2021-10-21 19:33:03,992 INFO L132 encePairwiseOnDemand]: 85/89 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2021-10-21 19:33:03,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 468 flow [2021-10-21 19:33:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:33:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:33:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2021-10-21 19:33:03,994 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9250936329588015 [2021-10-21 19:33:03,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2021-10-21 19:33:03,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2021-10-21 19:33:03,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:33:03,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2021-10-21 19:33:03,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-10-21 19:33:03,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-10-21 19:33:03,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-10-21 19:33:03,998 INFO L186 Difference]: Start difference. First operand has 105 places, 100 transitions, 466 flow. Second operand 3 states and 247 transitions. [2021-10-21 19:33:03,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 468 flow [2021-10-21 19:33:04,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 441 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-21 19:33:04,005 INFO L242 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2021-10-21 19:33:04,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2021-10-21 19:33:04,006 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2021-10-21 19:33:04,006 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2021-10-21 19:33:04,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-10-21 19:33:04,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:33:04,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:33:04,011 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:33:04,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:33:04,018 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:33:04,018 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:33:04,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:33:04 BasicIcfg [2021-10-21 19:33:04,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:33:04,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:33:04,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:33:04,022 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:33:04,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:32:57" (3/4) ... [2021-10-21 19:33:04,026 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:33:04,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-21 19:33:04,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-21 19:33:04,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-21 19:33:04,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:33:04,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:33:04,040 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:33:04,077 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:33:04,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:33:04,079 INFO L168 Benchmark]: Toolchain (without parser) took 7235.54 ms. Allocated memory was 86.0 MB in the beginning and 159.4 MB in the end (delta: 73.4 MB). Free memory was 50.0 MB in the beginning and 112.1 MB in the end (delta: -62.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:04,079 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:33:04,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.82 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.7 MB in the beginning and 81.1 MB in the end (delta: -31.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:04,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.02 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 79.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:04,081 INFO L168 Benchmark]: Boogie Preprocessor took 60.29 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 78.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:04,081 INFO L168 Benchmark]: RCFGBuilder took 494.57 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 65.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:04,082 INFO L168 Benchmark]: TraceAbstraction took 6244.71 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 65.2 MB in the beginning and 114.2 MB in the end (delta: -49.0 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:04,083 INFO L168 Benchmark]: Witness Printer took 55.59 ms. Allocated memory is still 159.4 MB. Free memory was 114.2 MB in the beginning and 112.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:04,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.82 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.7 MB in the beginning and 81.1 MB in the end (delta: -31.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.02 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 79.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.29 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 78.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 494.57 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 65.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6244.71 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 65.2 MB in the beginning and 114.2 MB in the end (delta: -49.0 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. * Witness Printer took 55.59 ms. Allocated memory is still 159.4 MB. Free memory was 114.2 MB in the beginning and 112.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 97]: 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, 107 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 31.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6037.7ms, OverallIterations: 10, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 1632.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 139.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 48 SDslu, 99 SDs, 0 SdLazy, 276 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 215.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 235 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 252.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=466occurred in iteration=9, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 101.7ms SsaConstructionTime, 576.6ms SatisfiabilityAnalysisTime, 2315.3ms InterpolantComputationTime, 900 NumberOfCodeBlocks, 900 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 887 ConstructedInterpolants, 0 QuantifiedInterpolants, 2471 SizeOfPredicates, 6 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 60/126 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! [2021-10-21 19:33:04,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6b3af3-10c3-48b0-9ee5-95f76811b4b8/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...