./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:35:50,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:35:50,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:35:50,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:35:50,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:35:50,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:35:50,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:35:50,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:35:50,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:35:50,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:35:50,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:35:50,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:35:50,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:35:50,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:35:50,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:35:50,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:35:50,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:35:50,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:35:50,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:35:50,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:35:50,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:35:50,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:35:50,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:35:50,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:35:50,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:35:50,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:35:50,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:35:50,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:35:50,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:35:50,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:35:50,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:35:50,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:35:50,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:35:50,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:35:50,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:35:50,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:35:50,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:35:50,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:35:50,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:35:50,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:35:50,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:35:50,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:35:50,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:35:50,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:35:50,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:35:50,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:35:50,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:35:50,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:35:50,414 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:35:50,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:35:50,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:35:50,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:35:50,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:35:50,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:35:50,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:35:50,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:35:50,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:35:50,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:35:50,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:35:50,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:35:50,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:35:50,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:35:50,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:35:50,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:35:50,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:35:50,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:35:50,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:35:50,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:35:50,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:35:50,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:35:50,419 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:35:50,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:35:50,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:35:50,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:35:50,420 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_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2021-10-28 23:35:50,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:35:50,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:35:50,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:35:50,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:35:50,762 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:35:50,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2021-10-28 23:35:50,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/data/a4f0643b4/42170445af3c4e43ae1f535f86416a64/FLAG8d435e5d5 [2021-10-28 23:35:51,339 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:35:51,340 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2021-10-28 23:35:51,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/data/a4f0643b4/42170445af3c4e43ae1f535f86416a64/FLAG8d435e5d5 [2021-10-28 23:35:51,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/data/a4f0643b4/42170445af3c4e43ae1f535f86416a64 [2021-10-28 23:35:51,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:35:51,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:35:51,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:35:51,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:35:51,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:35:51,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:35:51" (1/1) ... [2021-10-28 23:35:51,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b31a826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:51, skipping insertion in model container [2021-10-28 23:35:51,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:35:51" (1/1) ... [2021-10-28 23:35:51,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:35:51,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:35:51,985 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_0e8a8b8a-3136-467c-90c1-94d07f435646/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2021-10-28 23:35:51,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:35:52,008 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:35:52,044 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_0e8a8b8a-3136-467c-90c1-94d07f435646/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2021-10-28 23:35:52,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:35:52,068 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:35:52,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52 WrapperNode [2021-10-28 23:35:52,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:35:52,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:35:52,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:35:52,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:35:52,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:35:52,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:35:52,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:35:52,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:35:52,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:35:52,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:35:52,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:35:52,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:35:52,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (1/1) ... [2021-10-28 23:35:52,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:35:52,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:52,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:52,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:35:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:35:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:35:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:35:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 23:35:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 23:35:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 23:35:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 23:35:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-28 23:35:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-28 23:35:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-28 23:35:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-28 23:35:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:35:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:35:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:35:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:35:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:35:52,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:35:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:35:52,329 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:35:53,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:35:53,631 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-10-28 23:35:53,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:35:53 BoogieIcfgContainer [2021-10-28 23:35:53,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:35:53,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:35:53,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:35:53,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:35:53,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:35:51" (1/3) ... [2021-10-28 23:35:53,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa3ea2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:35:53, skipping insertion in model container [2021-10-28 23:35:53,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:52" (2/3) ... [2021-10-28 23:35:53,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa3ea2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:35:53, skipping insertion in model container [2021-10-28 23:35:53,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:35:53" (3/3) ... [2021-10-28 23:35:53,646 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2021-10-28 23:35:53,658 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:35:53,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:35:53,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:35:53,659 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:35:53,704 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,705 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,705 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,705 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,705 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,705 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,707 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,708 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,708 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,708 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,708 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,708 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,709 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,709 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,709 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,712 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,713 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,713 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,713 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,713 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,714 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,715 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,715 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,715 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,716 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,716 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,716 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,716 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,716 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,717 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,718 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,718 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,719 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,719 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,719 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,719 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,719 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,720 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,720 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,720 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,720 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,720 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,720 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,721 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,721 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,721 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,722 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,722 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,722 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,723 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,723 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,723 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,723 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,723 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,724 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,724 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,724 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,724 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,724 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,725 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,725 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,725 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,725 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,725 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,725 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,726 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,726 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,726 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,726 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,726 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,727 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,727 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,727 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,727 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,727 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,727 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,728 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,728 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,731 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,733 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,733 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,736 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,737 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,737 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,737 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,737 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,741 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,743 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,744 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,744 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,745 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,745 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,745 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,745 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,746 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,746 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,746 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,746 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,747 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,747 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,747 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:35:53,756 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-28 23:35:53,811 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:35:53,819 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:35:53,819 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 23:35:53,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 230 places, 239 transitions, 510 flow [2021-10-28 23:35:54,013 INFO L129 PetriNetUnfolder]: 22/235 cut-off events. [2021-10-28 23:35:54,017 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:35:54,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 22/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 133 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2021-10-28 23:35:54,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 239 transitions, 510 flow [2021-10-28 23:35:54,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 223 transitions, 470 flow [2021-10-28 23:35:54,129 INFO L129 PetriNetUnfolder]: 22/222 cut-off events. [2021-10-28 23:35:54,129 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:35:54,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:35:54,131 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:54,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:35:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash 556409207, now seen corresponding path program 1 times [2021-10-28 23:35:54,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:54,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077096110] [2021-10-28 23:35:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:54,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:54,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:54,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077096110] [2021-10-28 23:35:54,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077096110] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:54,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:54,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:35:54,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600443697] [2021-10-28 23:35:54,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:35:54,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:54,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:35:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:35:54,652 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 239 [2021-10-28 23:35:54,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 223 transitions, 470 flow. Second operand has 2 states, 2 states have (on average 224.0) internal successors, (448), 2 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:54,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:35:54,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 239 [2021-10-28 23:35:54,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:35:54,744 INFO L129 PetriNetUnfolder]: 7/208 cut-off events. [2021-10-28 23:35:54,744 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:35:54,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 208 events. 7/208 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 15/208 useless extension candidates. Maximal degree in co-relation 220. Up to 2 conditions per place. [2021-10-28 23:35:54,750 INFO L132 encePairwiseOnDemand]: 224/239 looper letters, 0 selfloop transitions, 0 changer transitions 8/208 dead transitions. [2021-10-28 23:35:54,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 208 transitions, 440 flow [2021-10-28 23:35:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:35:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 23:35:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 461 transitions. [2021-10-28 23:35:54,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9644351464435147 [2021-10-28 23:35:54,774 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 461 transitions. [2021-10-28 23:35:54,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 461 transitions. [2021-10-28 23:35:54,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:35:54,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 461 transitions. [2021-10-28 23:35:54,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 230.5) internal successors, (461), 2 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:54,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:54,816 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:54,818 INFO L186 Difference]: Start difference. First operand has 214 places, 223 transitions, 470 flow. Second operand 2 states and 461 transitions. [2021-10-28 23:35:54,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 208 transitions, 440 flow [2021-10-28 23:35:54,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 208 transitions, 424 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-10-28 23:35:54,846 INFO L242 Difference]: Finished difference. Result has 207 places, 200 transitions, 408 flow [2021-10-28 23:35:54,849 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=408, PETRI_PLACES=207, PETRI_TRANSITIONS=200} [2021-10-28 23:35:54,850 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, -7 predicate places. [2021-10-28 23:35:54,851 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 200 transitions, 408 flow [2021-10-28 23:35:54,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 224.0) internal successors, (448), 2 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:54,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:35:54,861 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:54,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:35:54,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:35:54,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1355011671, now seen corresponding path program 1 times [2021-10-28 23:35:54,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:54,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431953864] [2021-10-28 23:35:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:54,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:55,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:55,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431953864] [2021-10-28 23:35:55,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431953864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:55,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:55,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:35:55,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134360051] [2021-10-28 23:35:55,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:35:55,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:35:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:35:55,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 239 [2021-10-28 23:35:55,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 200 transitions, 408 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:35:55,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 239 [2021-10-28 23:35:55,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:35:55,548 INFO L129 PetriNetUnfolder]: 12/229 cut-off events. [2021-10-28 23:35:55,548 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:35:55,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 229 events. 12/229 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 177 event pairs, 0 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 277. Up to 29 conditions per place. [2021-10-28 23:35:55,552 INFO L132 encePairwiseOnDemand]: 233/239 looper letters, 34 selfloop transitions, 3 changer transitions 3/205 dead transitions. [2021-10-28 23:35:55,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 205 transitions, 498 flow [2021-10-28 23:35:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:35:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 23:35:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 941 transitions. [2021-10-28 23:35:55,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7874476987447698 [2021-10-28 23:35:55,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 941 transitions. [2021-10-28 23:35:55,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 941 transitions. [2021-10-28 23:35:55,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:35:55,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 941 transitions. [2021-10-28 23:35:55,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.2) internal successors, (941), 5 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,571 INFO L186 Difference]: Start difference. First operand has 207 places, 200 transitions, 408 flow. Second operand 5 states and 941 transitions. [2021-10-28 23:35:55,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 205 transitions, 498 flow [2021-10-28 23:35:55,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 205 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 23:35:55,580 INFO L242 Difference]: Finished difference. Result has 206 places, 202 transitions, 431 flow [2021-10-28 23:35:55,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=206, PETRI_TRANSITIONS=202} [2021-10-28 23:35:55,582 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, -8 predicate places. [2021-10-28 23:35:55,582 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 202 transitions, 431 flow [2021-10-28 23:35:55,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:35:55,584 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:55,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:35:55,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:35:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:55,586 INFO L85 PathProgramCache]: Analyzing trace with hash -202770374, now seen corresponding path program 1 times [2021-10-28 23:35:55,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:55,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532151023] [2021-10-28 23:35:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:55,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:55,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:55,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532151023] [2021-10-28 23:35:55,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532151023] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:55,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:55,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:35:55,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273153309] [2021-10-28 23:35:55,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:35:55,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:35:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:35:55,730 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 239 [2021-10-28 23:35:55,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 202 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:35:55,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 239 [2021-10-28 23:35:55,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:35:55,804 INFO L129 PetriNetUnfolder]: 16/265 cut-off events. [2021-10-28 23:35:55,804 INFO L130 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2021-10-28 23:35:55,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 265 events. 16/265 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 340 event pairs, 0 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2021-10-28 23:35:55,808 INFO L132 encePairwiseOnDemand]: 236/239 looper letters, 9 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2021-10-28 23:35:55,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 204 transitions, 457 flow [2021-10-28 23:35:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:35:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:35:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2021-10-28 23:35:55,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9149232914923291 [2021-10-28 23:35:55,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2021-10-28 23:35:55,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2021-10-28 23:35:55,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:35:55,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2021-10-28 23:35:55,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,820 INFO L186 Difference]: Start difference. First operand has 206 places, 202 transitions, 431 flow. Second operand 3 states and 656 transitions. [2021-10-28 23:35:55,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 204 transitions, 457 flow [2021-10-28 23:35:55,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 204 transitions, 450 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-28 23:35:55,828 INFO L242 Difference]: Finished difference. Result has 204 places, 203 transitions, 438 flow [2021-10-28 23:35:55,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=204, PETRI_TRANSITIONS=203} [2021-10-28 23:35:55,829 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, -10 predicate places. [2021-10-28 23:35:55,829 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 203 transitions, 438 flow [2021-10-28 23:35:55,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:35:55,831 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:55,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:35:55,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:35:55,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1041008370, now seen corresponding path program 1 times [2021-10-28 23:35:55,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:55,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433438613] [2021-10-28 23:35:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:55,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:55,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:55,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433438613] [2021-10-28 23:35:55,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433438613] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:55,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:56,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:35:56,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260820966] [2021-10-28 23:35:56,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:35:56,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:35:56,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:35:56,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 239 [2021-10-28 23:35:56,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 203 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:35:56,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 239 [2021-10-28 23:35:56,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:35:56,118 INFO L129 PetriNetUnfolder]: 19/292 cut-off events. [2021-10-28 23:35:56,119 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-10-28 23:35:56,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 292 events. 19/292 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 478 event pairs, 0 based on Foata normal form. 2/273 useless extension candidates. Maximal degree in co-relation 337. Up to 19 conditions per place. [2021-10-28 23:35:56,123 INFO L132 encePairwiseOnDemand]: 236/239 looper letters, 9 selfloop transitions, 2 changer transitions 0/205 dead transitions. [2021-10-28 23:35:56,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 205 transitions, 464 flow [2021-10-28 23:35:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:35:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:35:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2021-10-28 23:35:56,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9149232914923291 [2021-10-28 23:35:56,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2021-10-28 23:35:56,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2021-10-28 23:35:56,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:35:56,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2021-10-28 23:35:56,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,135 INFO L186 Difference]: Start difference. First operand has 204 places, 203 transitions, 438 flow. Second operand 3 states and 656 transitions. [2021-10-28 23:35:56,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 205 transitions, 464 flow [2021-10-28 23:35:56,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 205 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:35:56,142 INFO L242 Difference]: Finished difference. Result has 206 places, 204 transitions, 450 flow [2021-10-28 23:35:56,143 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=206, PETRI_TRANSITIONS=204} [2021-10-28 23:35:56,144 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, -8 predicate places. [2021-10-28 23:35:56,144 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 204 transitions, 450 flow [2021-10-28 23:35:56,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,145 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:35:56,145 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:56,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:35:56,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:35:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash 8823929, now seen corresponding path program 1 times [2021-10-28 23:35:56,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:56,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979462244] [2021-10-28 23:35:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:56,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:56,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:56,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979462244] [2021-10-28 23:35:56,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979462244] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:56,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:56,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:35:56,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032640644] [2021-10-28 23:35:56,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:35:56,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:56,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:35:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:35:56,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 239 [2021-10-28 23:35:56,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 204 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:35:56,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 239 [2021-10-28 23:35:56,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:35:56,559 INFO L129 PetriNetUnfolder]: 20/443 cut-off events. [2021-10-28 23:35:56,559 INFO L130 PetriNetUnfolder]: For 22/24 co-relation queries the response was YES. [2021-10-28 23:35:56,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 443 events. 20/443 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1151 event pairs, 0 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 565. Up to 33 conditions per place. [2021-10-28 23:35:56,566 INFO L132 encePairwiseOnDemand]: 229/239 looper letters, 60 selfloop transitions, 11 changer transitions 0/233 dead transitions. [2021-10-28 23:35:56,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 233 transitions, 650 flow [2021-10-28 23:35:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:35:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:35:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1717 transitions. [2021-10-28 23:35:56,603 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.798233379823338 [2021-10-28 23:35:56,603 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1717 transitions. [2021-10-28 23:35:56,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1717 transitions. [2021-10-28 23:35:56,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:35:56,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1717 transitions. [2021-10-28 23:35:56,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 190.77777777777777) internal successors, (1717), 9 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,622 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,623 INFO L186 Difference]: Start difference. First operand has 206 places, 204 transitions, 450 flow. Second operand 9 states and 1717 transitions. [2021-10-28 23:35:56,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 233 transitions, 650 flow [2021-10-28 23:35:56,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 233 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:35:56,631 INFO L242 Difference]: Finished difference. Result has 215 places, 208 transitions, 490 flow [2021-10-28 23:35:56,632 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=490, PETRI_PLACES=215, PETRI_TRANSITIONS=208} [2021-10-28 23:35:56,632 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2021-10-28 23:35:56,632 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 208 transitions, 490 flow [2021-10-28 23:35:56,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:35:56,634 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:56,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:35:56,634 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:35:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1119233705, now seen corresponding path program 1 times [2021-10-28 23:35:56,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:56,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396781180] [2021-10-28 23:35:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:56,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:35:56,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:56,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396781180] [2021-10-28 23:35:56,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396781180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:56,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:56,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:35:56,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142267156] [2021-10-28 23:35:56,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:35:56,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:56,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:35:56,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:35:56,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 239 [2021-10-28 23:35:56,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 208 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:35:56,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 239 [2021-10-28 23:35:56,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:35:57,075 INFO L129 PetriNetUnfolder]: 25/674 cut-off events. [2021-10-28 23:35:57,075 INFO L130 PetriNetUnfolder]: For 47/50 co-relation queries the response was YES. [2021-10-28 23:35:57,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 674 events. 25/674 cut-off events. For 47/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2678 event pairs, 0 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 867. Up to 54 conditions per place. [2021-10-28 23:35:57,082 INFO L132 encePairwiseOnDemand]: 229/239 looper letters, 51 selfloop transitions, 12 changer transitions 0/225 dead transitions. [2021-10-28 23:35:57,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 225 transitions, 650 flow [2021-10-28 23:35:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:35:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:35:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1705 transitions. [2021-10-28 23:35:57,089 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7926545792654579 [2021-10-28 23:35:57,089 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1705 transitions. [2021-10-28 23:35:57,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1705 transitions. [2021-10-28 23:35:57,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:35:57,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1705 transitions. [2021-10-28 23:35:57,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.44444444444446) internal successors, (1705), 9 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:57,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:57,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:57,105 INFO L186 Difference]: Start difference. First operand has 215 places, 208 transitions, 490 flow. Second operand 9 states and 1705 transitions. [2021-10-28 23:35:57,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 225 transitions, 650 flow [2021-10-28 23:35:57,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 225 transitions, 641 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 23:35:57,135 INFO L242 Difference]: Finished difference. Result has 222 places, 212 transitions, 525 flow [2021-10-28 23:35:57,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=222, PETRI_TRANSITIONS=212} [2021-10-28 23:35:57,136 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 8 predicate places. [2021-10-28 23:35:57,136 INFO L470 AbstractCegarLoop]: Abstraction has has 222 places, 212 transitions, 525 flow [2021-10-28 23:35:57,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:57,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:35:57,139 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:57,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:35:57,140 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:35:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1851848079, now seen corresponding path program 1 times [2021-10-28 23:35:57,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:57,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748101617] [2021-10-28 23:35:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:57,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:35:57,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:57,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748101617] [2021-10-28 23:35:57,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748101617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:57,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:57,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:35:57,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139321578] [2021-10-28 23:35:57,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:35:57,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:35:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:35:57,628 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 239 [2021-10-28 23:35:57,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 212 transitions, 525 flow. Second operand has 9 states, 9 states have (on average 171.22222222222223) internal successors, (1541), 9 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:57,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:35:57,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 239 [2021-10-28 23:35:57,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:35:59,126 INFO L129 PetriNetUnfolder]: 1103/3616 cut-off events. [2021-10-28 23:35:59,126 INFO L130 PetriNetUnfolder]: For 528/541 co-relation queries the response was YES. [2021-10-28 23:35:59,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6014 conditions, 3616 events. 1103/3616 cut-off events. For 528/541 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 28241 event pairs, 458 based on Foata normal form. 1/3060 useless extension candidates. Maximal degree in co-relation 6003. Up to 685 conditions per place. [2021-10-28 23:35:59,174 INFO L132 encePairwiseOnDemand]: 229/239 looper letters, 84 selfloop transitions, 12 changer transitions 0/241 dead transitions. [2021-10-28 23:35:59,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 241 transitions, 785 flow [2021-10-28 23:35:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:35:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:35:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1582 transitions. [2021-10-28 23:35:59,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7354718735471873 [2021-10-28 23:35:59,180 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1582 transitions. [2021-10-28 23:35:59,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1582 transitions. [2021-10-28 23:35:59,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:35:59,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1582 transitions. [2021-10-28 23:35:59,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.77777777777777) internal successors, (1582), 9 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:59,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:59,193 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:59,193 INFO L186 Difference]: Start difference. First operand has 222 places, 212 transitions, 525 flow. Second operand 9 states and 1582 transitions. [2021-10-28 23:35:59,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 241 transitions, 785 flow [2021-10-28 23:35:59,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 241 transitions, 774 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 23:35:59,204 INFO L242 Difference]: Finished difference. Result has 230 places, 217 transitions, 572 flow [2021-10-28 23:35:59,205 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=230, PETRI_TRANSITIONS=217} [2021-10-28 23:35:59,205 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 16 predicate places. [2021-10-28 23:35:59,205 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 217 transitions, 572 flow [2021-10-28 23:35:59,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 171.22222222222223) internal successors, (1541), 9 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:59,207 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:35:59,207 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:59,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:35:59,207 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:35:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1390037077, now seen corresponding path program 2 times [2021-10-28 23:35:59,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:59,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766414941] [2021-10-28 23:35:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:59,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:35:59,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:59,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766414941] [2021-10-28 23:35:59,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766414941] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:59,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:59,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:35:59,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237209511] [2021-10-28 23:35:59,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:35:59,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:59,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:35:59,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:35:59,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 239 [2021-10-28 23:35:59,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 217 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 176.25) internal successors, (1410), 8 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:59,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:35:59,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 239 [2021-10-28 23:35:59,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:36:00,854 INFO L129 PetriNetUnfolder]: 889/3716 cut-off events. [2021-10-28 23:36:00,854 INFO L130 PetriNetUnfolder]: For 636/677 co-relation queries the response was YES. [2021-10-28 23:36:00,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5952 conditions, 3716 events. 889/3716 cut-off events. For 636/677 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 32372 event pairs, 461 based on Foata normal form. 0/3105 useless extension candidates. Maximal degree in co-relation 5938. Up to 512 conditions per place. [2021-10-28 23:36:00,906 INFO L132 encePairwiseOnDemand]: 228/239 looper letters, 76 selfloop transitions, 11 changer transitions 0/238 dead transitions. [2021-10-28 23:36:00,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 238 transitions, 781 flow [2021-10-28 23:36:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:36:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:36:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1619 transitions. [2021-10-28 23:36:00,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7526731752673175 [2021-10-28 23:36:00,979 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1619 transitions. [2021-10-28 23:36:00,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1619 transitions. [2021-10-28 23:36:00,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:00,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1619 transitions. [2021-10-28 23:36:00,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,994 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,994 INFO L186 Difference]: Start difference. First operand has 230 places, 217 transitions, 572 flow. Second operand 9 states and 1619 transitions. [2021-10-28 23:36:00,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 238 transitions, 781 flow [2021-10-28 23:36:01,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 238 transitions, 769 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 23:36:01,012 INFO L242 Difference]: Finished difference. Result has 235 places, 216 transitions, 573 flow [2021-10-28 23:36:01,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=573, PETRI_PLACES=235, PETRI_TRANSITIONS=216} [2021-10-28 23:36:01,013 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 21 predicate places. [2021-10-28 23:36:01,013 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 216 transitions, 573 flow [2021-10-28 23:36:01,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.25) internal successors, (1410), 8 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:01,015 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:36:01,015 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:01,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:36:01,015 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:36:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash 859359128, now seen corresponding path program 1 times [2021-10-28 23:36:01,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:01,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406064792] [2021-10-28 23:36:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:01,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:36:01,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:36:01,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406064792] [2021-10-28 23:36:01,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406064792] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:01,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:01,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:36:01,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433905053] [2021-10-28 23:36:01,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:36:01,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:36:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:36:01,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 239 [2021-10-28 23:36:01,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 216 transitions, 573 flow. Second operand has 8 states, 8 states have (on average 176.25) internal successors, (1410), 8 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:01,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:36:01,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 239 [2021-10-28 23:36:01,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:36:02,198 INFO L129 PetriNetUnfolder]: 773/2966 cut-off events. [2021-10-28 23:36:02,199 INFO L130 PetriNetUnfolder]: For 762/768 co-relation queries the response was YES. [2021-10-28 23:36:02,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5217 conditions, 2966 events. 773/2966 cut-off events. For 762/768 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23189 event pairs, 342 based on Foata normal form. 0/2578 useless extension candidates. Maximal degree in co-relation 5201. Up to 524 conditions per place. [2021-10-28 23:36:02,247 INFO L132 encePairwiseOnDemand]: 228/239 looper letters, 63 selfloop transitions, 9 changer transitions 11/234 dead transitions. [2021-10-28 23:36:02,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 234 transitions, 788 flow [2021-10-28 23:36:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:36:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:36:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1615 transitions. [2021-10-28 23:36:02,256 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7508135750813575 [2021-10-28 23:36:02,257 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1615 transitions. [2021-10-28 23:36:02,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1615 transitions. [2021-10-28 23:36:02,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:02,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1615 transitions. [2021-10-28 23:36:02,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.44444444444446) internal successors, (1615), 9 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,275 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,276 INFO L186 Difference]: Start difference. First operand has 235 places, 216 transitions, 573 flow. Second operand 9 states and 1615 transitions. [2021-10-28 23:36:02,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 234 transitions, 788 flow [2021-10-28 23:36:02,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 234 transitions, 769 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 23:36:02,288 INFO L242 Difference]: Finished difference. Result has 239 places, 213 transitions, 556 flow [2021-10-28 23:36:02,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=556, PETRI_PLACES=239, PETRI_TRANSITIONS=213} [2021-10-28 23:36:02,290 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 25 predicate places. [2021-10-28 23:36:02,290 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 213 transitions, 556 flow [2021-10-28 23:36:02,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.25) internal successors, (1410), 8 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,291 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:36:02,292 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:02,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:36:02,293 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:36:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash 425437976, now seen corresponding path program 1 times [2021-10-28 23:36:02,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:02,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469044936] [2021-10-28 23:36:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:02,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:36:02,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:36:02,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469044936] [2021-10-28 23:36:02,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469044936] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:02,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:02,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:36:02,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308753596] [2021-10-28 23:36:02,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:36:02,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:36:02,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:36:02,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 239 [2021-10-28 23:36:02,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 213 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 175.88888888888889) internal successors, (1583), 9 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:36:02,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 239 [2021-10-28 23:36:02,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:36:03,510 INFO L129 PetriNetUnfolder]: 678/2098 cut-off events. [2021-10-28 23:36:03,510 INFO L130 PetriNetUnfolder]: For 594/633 co-relation queries the response was YES. [2021-10-28 23:36:03,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 2098 events. 678/2098 cut-off events. For 594/633 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13451 event pairs, 88 based on Foata normal form. 61/1924 useless extension candidates. Maximal degree in co-relation 4058. Up to 501 conditions per place. [2021-10-28 23:36:03,542 INFO L132 encePairwiseOnDemand]: 230/239 looper letters, 70 selfloop transitions, 8 changer transitions 3/232 dead transitions. [2021-10-28 23:36:03,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 232 transitions, 770 flow [2021-10-28 23:36:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:36:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:36:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1612 transitions. [2021-10-28 23:36:03,550 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7494188749418875 [2021-10-28 23:36:03,550 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1612 transitions. [2021-10-28 23:36:03,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1612 transitions. [2021-10-28 23:36:03,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:03,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1612 transitions. [2021-10-28 23:36:03,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.11111111111111) internal successors, (1612), 9 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:03,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:03,585 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:03,586 INFO L186 Difference]: Start difference. First operand has 239 places, 213 transitions, 556 flow. Second operand 9 states and 1612 transitions. [2021-10-28 23:36:03,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 232 transitions, 770 flow [2021-10-28 23:36:03,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 232 transitions, 728 flow, removed 13 selfloop flow, removed 12 redundant places. [2021-10-28 23:36:03,598 INFO L242 Difference]: Finished difference. Result has 232 places, 212 transitions, 547 flow [2021-10-28 23:36:03,600 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=547, PETRI_PLACES=232, PETRI_TRANSITIONS=212} [2021-10-28 23:36:03,600 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 18 predicate places. [2021-10-28 23:36:03,601 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 212 transitions, 547 flow [2021-10-28 23:36:03,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.88888888888889) internal successors, (1583), 9 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:03,602 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:36:03,602 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:03,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:36:03,603 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:36:03,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -266801053, now seen corresponding path program 1 times [2021-10-28 23:36:03,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:03,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773711646] [2021-10-28 23:36:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:03,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:36:03,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:36:03,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773711646] [2021-10-28 23:36:03,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773711646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:36:03,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911852660] [2021-10-28 23:36:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:03,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:36:03,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:03,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:36:03,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:36:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:04,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:36:04,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:36:04,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911852660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:04,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:36:04,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-10-28 23:36:04,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218623540] [2021-10-28 23:36:04,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:36:04,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:04,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:36:04,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:36:04,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 239 [2021-10-28 23:36:04,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 212 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:04,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:36:04,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 239 [2021-10-28 23:36:04,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:36:04,998 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-10-28 23:36:04,998 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-10-28 23:36:04,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 80 events. 0/80 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 2/82 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-10-28 23:36:04,999 INFO L132 encePairwiseOnDemand]: 228/239 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2021-10-28 23:36:04,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 80 transitions, 235 flow [2021-10-28 23:36:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:36:05,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 23:36:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 963 transitions. [2021-10-28 23:36:05,005 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6715481171548117 [2021-10-28 23:36:05,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 963 transitions. [2021-10-28 23:36:05,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 963 transitions. [2021-10-28 23:36:05,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:05,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 963 transitions. [2021-10-28 23:36:05,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:05,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:05,016 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:05,016 INFO L186 Difference]: Start difference. First operand has 232 places, 212 transitions, 547 flow. Second operand 6 states and 963 transitions. [2021-10-28 23:36:05,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 80 transitions, 235 flow [2021-10-28 23:36:05,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 80 transitions, 213 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-10-28 23:36:05,020 INFO L242 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2021-10-28 23:36:05,020 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2021-10-28 23:36:05,020 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, -120 predicate places. [2021-10-28 23:36:05,021 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2021-10-28 23:36:05,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:05,024 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:36:05,025 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:36:05,025 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:36:05,026 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:36:05,026 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-28 23:36:05,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:05,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:36:05,250 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:05,253 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:36:05,254 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:36:05,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:36:05 BasicIcfg [2021-10-28 23:36:05,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:36:05,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:36:05,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:36:05,258 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:36:05,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:35:53" (3/4) ... [2021-10-28 23:36:05,269 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:36:05,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 23:36:05,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 23:36:05,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-28 23:36:05,277 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-28 23:36:05,285 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2021-10-28 23:36:05,286 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:36:05,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:36:05,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:36:05,352 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:36:05,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:36:05,354 INFO L168 Benchmark]: Toolchain (without parser) took 13673.53 ms. Allocated memory was 104.9 MB in the beginning and 536.9 MB in the end (delta: 432.0 MB). Free memory was 68.0 MB in the beginning and 215.3 MB in the end (delta: -147.2 MB). Peak memory consumption was 284.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:05,355 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 84.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:36:05,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.15 ms. Allocated memory is still 104.9 MB. Free memory was 67.9 MB in the beginning and 78.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:05,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.02 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 75.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:05,356 INFO L168 Benchmark]: Boogie Preprocessor took 56.42 ms. Allocated memory is still 104.9 MB. Free memory was 75.9 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:05,357 INFO L168 Benchmark]: RCFGBuilder took 1411.48 ms. Allocated memory is still 104.9 MB. Free memory was 73.8 MB in the beginning and 62.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:05,357 INFO L168 Benchmark]: TraceAbstraction took 11619.39 ms. Allocated memory was 104.9 MB in the beginning and 536.9 MB in the end (delta: 432.0 MB). Free memory was 61.7 MB in the beginning and 219.6 MB in the end (delta: -157.9 MB). Peak memory consumption was 274.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:05,358 INFO L168 Benchmark]: Witness Printer took 94.84 ms. Allocated memory is still 536.9 MB. Free memory was 219.6 MB in the beginning and 215.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:05,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 84.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.15 ms. Allocated memory is still 104.9 MB. Free memory was 67.9 MB in the beginning and 78.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.02 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 75.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.42 ms. Allocated memory is still 104.9 MB. Free memory was 75.9 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1411.48 ms. Allocated memory is still 104.9 MB. Free memory was 73.8 MB in the beginning and 62.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11619.39 ms. Allocated memory was 104.9 MB in the beginning and 536.9 MB in the end (delta: 432.0 MB). Free memory was 61.7 MB in the beginning and 219.6 MB in the end (delta: -157.9 MB). Peak memory consumption was 274.2 MB. Max. memory is 16.1 GB. * Witness Printer took 94.84 ms. Allocated memory is still 536.9 MB. Free memory was 219.6 MB in the beginning and 215.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 151]: 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 9 procedures, 250 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.4s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 277 SDtfs, 491 SDslu, 581 SDs, 0 SdLazy, 819 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=573occurred in iteration=8, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 2121 NumberOfCodeBlocks, 2121 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2109 ConstructedInterpolants, 0 QuantifiedInterpolants, 6530 SizeOfPredicates, 4 NumberOfNonLiveVariables, 470 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 26/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:36:05,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a8b8a-3136-467c-90c1-94d07f435646/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...