./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7db5da573de5a20455a36e013b1614f5d7f4dede9c4027ebf8a62a657a5ca5e2 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:04:22,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:04:22,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:04:22,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:04:22,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:04:22,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:04:22,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:04:22,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:04:22,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:04:22,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:04:22,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:04:22,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:04:22,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:04:22,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:04:22,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:04:22,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:04:22,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:04:22,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:04:22,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:04:22,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:04:22,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:04:22,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:04:22,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:04:22,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:04:22,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:04:22,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:04:22,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:04:22,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:04:22,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:04:22,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:04:22,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:04:22,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:04:22,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:04:22,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:04:22,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:04:22,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:04:22,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:04:22,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:04:22,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:04:22,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:04:22,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:04:22,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:04:22,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:04:22,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:04:22,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:04:22,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:04:22,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:04:22,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:04:22,419 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:04:22,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:04:22,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:04:22,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:04:22,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:04:22,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:04:22,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:04:22,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:04:22,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:04:22,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:04:22,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:04:22,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:04:22,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:04:22,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:04:22,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:04:22,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:04:22,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:22,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:04:22,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:04:22,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:04:22,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:04:22,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:04:22,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:04:22,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:04:22,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:04:22,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:04:22,425 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_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7db5da573de5a20455a36e013b1614f5d7f4dede9c4027ebf8a62a657a5ca5e2 [2021-10-28 09:04:22,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:04:22,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:04:22,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:04:22,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:04:22,830 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:04:22,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i [2021-10-28 09:04:22,941 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/data/36023b791/8724f604187043b699528f657360ca78/FLAG07e78c8b3 [2021-10-28 09:04:23,577 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:04:23,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i [2021-10-28 09:04:23,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/data/36023b791/8724f604187043b699528f657360ca78/FLAG07e78c8b3 [2021-10-28 09:04:23,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/data/36023b791/8724f604187043b699528f657360ca78 [2021-10-28 09:04:23,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:04:23,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:04:23,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:23,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:04:23,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:04:23,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:23" (1/1) ... [2021-10-28 09:04:23,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7f836a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:23, skipping insertion in model container [2021-10-28 09:04:23,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:23" (1/1) ... [2021-10-28 09:04:23,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:04:23,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:04:24,240 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_f6027b47-afc9-4550-89f6-b63a3f63b8c8/sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2021-10-28 09:04:24,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:24,500 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:04:24,516 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_f6027b47-afc9-4550-89f6-b63a3f63b8c8/sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2021-10-28 09:04:24,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:24,654 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:04:24,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24 WrapperNode [2021-10-28 09:04:24,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:24,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:04:24,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:04:24,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:04:24,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:04:24,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:04:24,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:04:24,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:04:24,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:04:24,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:04:24,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:04:24,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:04:24,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (1/1) ... [2021-10-28 09:04:24,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:24,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:24,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:04:24,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:04:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:04:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:04:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:04:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:04:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 09:04:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 09:04:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 09:04:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 09:04:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:04:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:04:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:04:24,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:04:24,939 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:04:27,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:04:27,129 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 09:04:27,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:27 BoogieIcfgContainer [2021-10-28 09:04:27,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:04:27,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:04:27,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:04:27,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:04:27,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:04:23" (1/3) ... [2021-10-28 09:04:27,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d604a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:27, skipping insertion in model container [2021-10-28 09:04:27,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:24" (2/3) ... [2021-10-28 09:04:27,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d604a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:27, skipping insertion in model container [2021-10-28 09:04:27,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:27" (3/3) ... [2021-10-28 09:04:27,148 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_power.oepc_pso.oepc_rmo.oepc.i [2021-10-28 09:04:27,157 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:04:27,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:04:27,157 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 09:04:27,158 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:04:27,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,200 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,200 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,204 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,212 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,212 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,214 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,214 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,214 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,215 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,215 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,219 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,219 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,265 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,265 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,265 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:27,269 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 09:04:27,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:04:27,361 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:04:27,363 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 09:04:27,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 180 flow [2021-10-28 09:04:27,454 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-10-28 09:04:27,455 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:04:27,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-28 09:04:27,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 85 transitions, 180 flow [2021-10-28 09:04:27,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 172 flow [2021-10-28 09:04:27,498 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-10-28 09:04:27,498 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:04:27,499 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:27,500 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] [2021-10-28 09:04:27,501 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:27,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1706053472, now seen corresponding path program 1 times [2021-10-28 09:04:27,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:27,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294164780] [2021-10-28 09:04:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:27,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:28,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:28,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294164780] [2021-10-28 09:04:28,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294164780] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:28,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:28,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:04:28,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990727164] [2021-10-28 09:04:28,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:04:28,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:04:28,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:04:28,058 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 85 [2021-10-28 09:04:28,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:28,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 85 [2021-10-28 09:04:28,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:28,241 INFO L129 PetriNetUnfolder]: 16/190 cut-off events. [2021-10-28 09:04:28,242 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:04:28,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 190 events. 16/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 640 event pairs, 11 based on Foata normal form. 9/188 useless extension candidates. Maximal degree in co-relation 190. Up to 27 conditions per place. [2021-10-28 09:04:28,247 INFO L132 encePairwiseOnDemand]: 80/85 looper letters, 7 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2021-10-28 09:04:28,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 82 transitions, 188 flow [2021-10-28 09:04:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:04:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:04:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2021-10-28 09:04:28,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9372549019607843 [2021-10-28 09:04:28,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2021-10-28 09:04:28,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2021-10-28 09:04:28,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:28,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2021-10-28 09:04:28,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,287 INFO L186 Difference]: Start difference. First operand has 88 places, 83 transitions, 172 flow. Second operand 3 states and 239 transitions. [2021-10-28 09:04:28,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 82 transitions, 188 flow [2021-10-28 09:04:28,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:04:28,297 INFO L242 Difference]: Finished difference. Result has 86 places, 79 transitions, 166 flow [2021-10-28 09:04:28,299 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2021-10-28 09:04:28,301 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, -2 predicate places. [2021-10-28 09:04:28,301 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 166 flow [2021-10-28 09:04:28,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,302 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:28,302 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] [2021-10-28 09:04:28,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:04:28,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:28,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2072796695, now seen corresponding path program 1 times [2021-10-28 09:04:28,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:28,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129054624] [2021-10-28 09:04:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:28,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:28,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:28,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129054624] [2021-10-28 09:04:28,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129054624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:28,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:28,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:04:28,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284734340] [2021-10-28 09:04:28,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:04:28,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:28,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:04:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:04:28,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-10-28 09:04:28,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:28,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-10-28 09:04:28,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:28,903 INFO L129 PetriNetUnfolder]: 30/238 cut-off events. [2021-10-28 09:04:28,903 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:04:28,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 238 events. 30/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1009 event pairs, 6 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 277. Up to 36 conditions per place. [2021-10-28 09:04:28,906 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 8 selfloop transitions, 3 changer transitions 29/102 dead transitions. [2021-10-28 09:04:28,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 102 transitions, 278 flow [2021-10-28 09:04:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:04:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:04:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 683 transitions. [2021-10-28 09:04:28,918 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8928104575163399 [2021-10-28 09:04:28,918 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 683 transitions. [2021-10-28 09:04:28,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 683 transitions. [2021-10-28 09:04:28,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:28,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 683 transitions. [2021-10-28 09:04:28,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.88888888888889) internal successors, (683), 9 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,939 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,940 INFO L186 Difference]: Start difference. First operand has 86 places, 79 transitions, 166 flow. Second operand 9 states and 683 transitions. [2021-10-28 09:04:28,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 102 transitions, 278 flow [2021-10-28 09:04:28,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 102 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:04:28,946 INFO L242 Difference]: Finished difference. Result has 99 places, 73 transitions, 189 flow [2021-10-28 09:04:28,947 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=189, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2021-10-28 09:04:28,947 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2021-10-28 09:04:28,948 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 189 flow [2021-10-28 09:04:28,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:28,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:28,949 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] [2021-10-28 09:04:28,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:04:28,949 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:28,950 INFO L85 PathProgramCache]: Analyzing trace with hash -271021832, now seen corresponding path program 1 times [2021-10-28 09:04:28,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:28,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051014122] [2021-10-28 09:04:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:28,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:29,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:29,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051014122] [2021-10-28 09:04:29,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051014122] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:29,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:29,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:04:29,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133391208] [2021-10-28 09:04:29,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:04:29,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:04:29,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:04:29,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2021-10-28 09:04:29,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 73 transitions, 189 flow. Second operand has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:29,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:29,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2021-10-28 09:04:29,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:30,001 INFO L129 PetriNetUnfolder]: 157/431 cut-off events. [2021-10-28 09:04:30,002 INFO L130 PetriNetUnfolder]: For 357/357 co-relation queries the response was YES. [2021-10-28 09:04:30,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 431 events. 157/431 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1983 event pairs, 42 based on Foata normal form. 12/432 useless extension candidates. Maximal degree in co-relation 949. Up to 173 conditions per place. [2021-10-28 09:04:30,010 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 12 selfloop transitions, 10 changer transitions 34/114 dead transitions. [2021-10-28 09:04:30,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 114 transitions, 411 flow [2021-10-28 09:04:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:04:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-28 09:04:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1034 transitions. [2021-10-28 09:04:30,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8109803921568628 [2021-10-28 09:04:30,017 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1034 transitions. [2021-10-28 09:04:30,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1034 transitions. [2021-10-28 09:04:30,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:30,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1034 transitions. [2021-10-28 09:04:30,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 68.93333333333334) internal successors, (1034), 15 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,030 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,031 INFO L186 Difference]: Start difference. First operand has 99 places, 73 transitions, 189 flow. Second operand 15 states and 1034 transitions. [2021-10-28 09:04:30,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 114 transitions, 411 flow [2021-10-28 09:04:30,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 114 transitions, 390 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-10-28 09:04:30,040 INFO L242 Difference]: Finished difference. Result has 106 places, 79 transitions, 266 flow [2021-10-28 09:04:30,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=266, PETRI_PLACES=106, PETRI_TRANSITIONS=79} [2021-10-28 09:04:30,041 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 18 predicate places. [2021-10-28 09:04:30,042 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 79 transitions, 266 flow [2021-10-28 09:04:30,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,043 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:30,043 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] [2021-10-28 09:04:30,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:04:30,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1821353691, now seen corresponding path program 1 times [2021-10-28 09:04:30,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:30,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546367889] [2021-10-28 09:04:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:30,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:30,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:30,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546367889] [2021-10-28 09:04:30,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546367889] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:30,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:30,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:04:30,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992619709] [2021-10-28 09:04:30,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:04:30,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:04:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:04:30,197 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-10-28 09:04:30,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 79 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:30,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-10-28 09:04:30,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:30,443 INFO L129 PetriNetUnfolder]: 60/344 cut-off events. [2021-10-28 09:04:30,443 INFO L130 PetriNetUnfolder]: For 829/851 co-relation queries the response was YES. [2021-10-28 09:04:30,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 344 events. 60/344 cut-off events. For 829/851 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1885 event pairs, 9 based on Foata normal form. 10/345 useless extension candidates. Maximal degree in co-relation 949. Up to 65 conditions per place. [2021-10-28 09:04:30,449 INFO L132 encePairwiseOnDemand]: 79/85 looper letters, 13 selfloop transitions, 4 changer transitions 10/94 dead transitions. [2021-10-28 09:04:30,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 441 flow [2021-10-28 09:04:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:04:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:04:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-10-28 09:04:30,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8810457516339869 [2021-10-28 09:04:30,458 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-10-28 09:04:30,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-10-28 09:04:30,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:30,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-10-28 09:04:30,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,466 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,466 INFO L186 Difference]: Start difference. First operand has 106 places, 79 transitions, 266 flow. Second operand 9 states and 674 transitions. [2021-10-28 09:04:30,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 441 flow [2021-10-28 09:04:30,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 409 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-10-28 09:04:30,485 INFO L242 Difference]: Finished difference. Result has 107 places, 80 transitions, 291 flow [2021-10-28 09:04:30,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=291, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2021-10-28 09:04:30,486 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 19 predicate places. [2021-10-28 09:04:30,486 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 291 flow [2021-10-28 09:04:30,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:30,487 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] [2021-10-28 09:04:30,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:04:30,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:30,488 INFO L85 PathProgramCache]: Analyzing trace with hash 681644667, now seen corresponding path program 1 times [2021-10-28 09:04:30,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:30,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660398103] [2021-10-28 09:04:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:30,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:30,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:30,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660398103] [2021-10-28 09:04:30,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660398103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:30,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:30,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:04:30,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600171586] [2021-10-28 09:04:30,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:04:30,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:04:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:04:30,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-28 09:04:30,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:30,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:30,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-28 09:04:30,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:31,249 INFO L129 PetriNetUnfolder]: 168/452 cut-off events. [2021-10-28 09:04:31,249 INFO L130 PetriNetUnfolder]: For 1895/1979 co-relation queries the response was YES. [2021-10-28 09:04:31,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 452 events. 168/452 cut-off events. For 1895/1979 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2092 event pairs, 64 based on Foata normal form. 12/451 useless extension candidates. Maximal degree in co-relation 1640. Up to 228 conditions per place. [2021-10-28 09:04:31,259 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 22 selfloop transitions, 7 changer transitions 26/115 dead transitions. [2021-10-28 09:04:31,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 115 transitions, 661 flow [2021-10-28 09:04:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:04:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:04:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 923 transitions. [2021-10-28 09:04:31,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2021-10-28 09:04:31,265 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 923 transitions. [2021-10-28 09:04:31,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 923 transitions. [2021-10-28 09:04:31,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:31,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 923 transitions. [2021-10-28 09:04:31,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.0) internal successors, (923), 13 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:31,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:31,275 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:31,276 INFO L186 Difference]: Start difference. First operand has 107 places, 80 transitions, 291 flow. Second operand 13 states and 923 transitions. [2021-10-28 09:04:31,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 115 transitions, 661 flow [2021-10-28 09:04:31,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 115 transitions, 610 flow, removed 24 selfloop flow, removed 6 redundant places. [2021-10-28 09:04:31,289 INFO L242 Difference]: Finished difference. Result has 118 places, 82 transitions, 324 flow [2021-10-28 09:04:31,290 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=324, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2021-10-28 09:04:31,290 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 30 predicate places. [2021-10-28 09:04:31,290 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 324 flow [2021-10-28 09:04:31,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:31,291 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:31,291 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] [2021-10-28 09:04:31,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:04:31,292 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash -132268815, now seen corresponding path program 2 times [2021-10-28 09:04:31,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:31,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134179238] [2021-10-28 09:04:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:31,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:31,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:31,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134179238] [2021-10-28 09:04:31,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134179238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:31,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:31,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:04:31,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853878543] [2021-10-28 09:04:31,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:04:31,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:31,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:04:31,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:04:31,578 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 85 [2021-10-28 09:04:31,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 324 flow. Second operand has 9 states, 9 states have (on average 67.22222222222223) internal successors, (605), 9 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:31,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:31,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 85 [2021-10-28 09:04:31,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:31,948 INFO L129 PetriNetUnfolder]: 144/423 cut-off events. [2021-10-28 09:04:31,949 INFO L130 PetriNetUnfolder]: For 2492/2659 co-relation queries the response was YES. [2021-10-28 09:04:31,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 423 events. 144/423 cut-off events. For 2492/2659 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1976 event pairs, 52 based on Foata normal form. 14/426 useless extension candidates. Maximal degree in co-relation 1753. Up to 202 conditions per place. [2021-10-28 09:04:31,957 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 20 selfloop transitions, 6 changer transitions 19/104 dead transitions. [2021-10-28 09:04:31,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 104 transitions, 638 flow [2021-10-28 09:04:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:04:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:04:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 766 transitions. [2021-10-28 09:04:31,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8192513368983957 [2021-10-28 09:04:31,962 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 766 transitions. [2021-10-28 09:04:31,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 766 transitions. [2021-10-28 09:04:31,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:31,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 766 transitions. [2021-10-28 09:04:31,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.63636363636364) internal successors, (766), 11 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:31,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:31,970 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:31,971 INFO L186 Difference]: Start difference. First operand has 118 places, 82 transitions, 324 flow. Second operand 11 states and 766 transitions. [2021-10-28 09:04:31,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 104 transitions, 638 flow [2021-10-28 09:04:32,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 104 transitions, 579 flow, removed 26 selfloop flow, removed 8 redundant places. [2021-10-28 09:04:32,015 INFO L242 Difference]: Finished difference. Result has 117 places, 82 transitions, 323 flow [2021-10-28 09:04:32,015 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=323, PETRI_PLACES=117, PETRI_TRANSITIONS=82} [2021-10-28 09:04:32,015 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 29 predicate places. [2021-10-28 09:04:32,016 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 82 transitions, 323 flow [2021-10-28 09:04:32,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.22222222222223) internal successors, (605), 9 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:32,016 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:32,016 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:32,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:04:32,017 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:32,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2080328038, now seen corresponding path program 1 times [2021-10-28 09:04:32,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:32,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429758219] [2021-10-28 09:04:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:32,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:32,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:32,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429758219] [2021-10-28 09:04:32,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429758219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:32,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:32,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:04:32,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959515693] [2021-10-28 09:04:32,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:04:32,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:04:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:04:32,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2021-10-28 09:04:32,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 82 transitions, 323 flow. Second operand has 9 states, 9 states have (on average 66.33333333333333) internal successors, (597), 9 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:32,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:32,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2021-10-28 09:04:32,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:32,684 INFO L129 PetriNetUnfolder]: 142/432 cut-off events. [2021-10-28 09:04:32,685 INFO L130 PetriNetUnfolder]: For 2486/2601 co-relation queries the response was YES. [2021-10-28 09:04:32,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 432 events. 142/432 cut-off events. For 2486/2601 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2134 event pairs, 57 based on Foata normal form. 24/440 useless extension candidates. Maximal degree in co-relation 1749. Up to 156 conditions per place. [2021-10-28 09:04:32,693 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 16 selfloop transitions, 10 changer transitions 23/107 dead transitions. [2021-10-28 09:04:32,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 107 transitions, 629 flow [2021-10-28 09:04:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:04:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:04:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 825 transitions. [2021-10-28 09:04:32,699 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2021-10-28 09:04:32,699 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 825 transitions. [2021-10-28 09:04:32,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 825 transitions. [2021-10-28 09:04:32,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:32,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 825 transitions. [2021-10-28 09:04:32,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 68.75) internal successors, (825), 12 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:32,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:32,708 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:32,708 INFO L186 Difference]: Start difference. First operand has 117 places, 82 transitions, 323 flow. Second operand 12 states and 825 transitions. [2021-10-28 09:04:32,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 107 transitions, 629 flow [2021-10-28 09:04:32,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 107 transitions, 572 flow, removed 24 selfloop flow, removed 12 redundant places. [2021-10-28 09:04:32,723 INFO L242 Difference]: Finished difference. Result has 117 places, 83 transitions, 352 flow [2021-10-28 09:04:32,723 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=352, PETRI_PLACES=117, PETRI_TRANSITIONS=83} [2021-10-28 09:04:32,724 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 29 predicate places. [2021-10-28 09:04:32,724 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 83 transitions, 352 flow [2021-10-28 09:04:32,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 66.33333333333333) internal successors, (597), 9 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:32,725 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:32,725 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] [2021-10-28 09:04:32,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:04:32,726 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2046881589, now seen corresponding path program 1 times [2021-10-28 09:04:32,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:32,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819667996] [2021-10-28 09:04:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:32,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:33,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:33,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819667996] [2021-10-28 09:04:33,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819667996] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:33,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:33,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:04:33,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302685767] [2021-10-28 09:04:33,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:04:33,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:33,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:04:33,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:04:33,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2021-10-28 09:04:33,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 83 transitions, 352 flow. Second operand has 9 states, 9 states have (on average 66.44444444444444) internal successors, (598), 9 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:33,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:33,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2021-10-28 09:04:33,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:33,559 INFO L129 PetriNetUnfolder]: 102/379 cut-off events. [2021-10-28 09:04:33,559 INFO L130 PetriNetUnfolder]: For 2706/2877 co-relation queries the response was YES. [2021-10-28 09:04:33,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1708 conditions, 379 events. 102/379 cut-off events. For 2706/2877 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1902 event pairs, 13 based on Foata normal form. 22/387 useless extension candidates. Maximal degree in co-relation 1630. Up to 92 conditions per place. [2021-10-28 09:04:33,566 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 20 selfloop transitions, 12 changer transitions 22/112 dead transitions. [2021-10-28 09:04:33,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 112 transitions, 790 flow [2021-10-28 09:04:33,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:04:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 09:04:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 958 transitions. [2021-10-28 09:04:33,572 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8050420168067227 [2021-10-28 09:04:33,572 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 958 transitions. [2021-10-28 09:04:33,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 958 transitions. [2021-10-28 09:04:33,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:33,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 958 transitions. [2021-10-28 09:04:33,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 68.42857142857143) internal successors, (958), 14 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:33,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 85.0) internal successors, (1275), 15 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:33,582 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 85.0) internal successors, (1275), 15 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:33,582 INFO L186 Difference]: Start difference. First operand has 117 places, 83 transitions, 352 flow. Second operand 14 states and 958 transitions. [2021-10-28 09:04:33,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 112 transitions, 790 flow [2021-10-28 09:04:33,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 751 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-10-28 09:04:33,595 INFO L242 Difference]: Finished difference. Result has 124 places, 84 transitions, 411 flow [2021-10-28 09:04:33,596 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=411, PETRI_PLACES=124, PETRI_TRANSITIONS=84} [2021-10-28 09:04:33,596 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 36 predicate places. [2021-10-28 09:04:33,596 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 84 transitions, 411 flow [2021-10-28 09:04:33,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 66.44444444444444) internal successors, (598), 9 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:33,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:33,597 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:33,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:04:33,598 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:33,599 INFO L85 PathProgramCache]: Analyzing trace with hash -615167435, now seen corresponding path program 1 times [2021-10-28 09:04:33,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:33,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454200664] [2021-10-28 09:04:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:33,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:33,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:33,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454200664] [2021-10-28 09:04:33,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454200664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:33,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:33,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:04:33,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589414742] [2021-10-28 09:04:33,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:04:33,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:33,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:04:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:04:33,779 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-10-28 09:04:33,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 84 transitions, 411 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:33,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:33,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-10-28 09:04:33,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:34,004 INFO L129 PetriNetUnfolder]: 111/447 cut-off events. [2021-10-28 09:04:34,004 INFO L130 PetriNetUnfolder]: For 1787/1792 co-relation queries the response was YES. [2021-10-28 09:04:34,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 447 events. 111/447 cut-off events. For 1787/1792 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2717 event pairs, 15 based on Foata normal form. 3/416 useless extension candidates. Maximal degree in co-relation 1258. Up to 75 conditions per place. [2021-10-28 09:04:34,012 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 13 selfloop transitions, 14 changer transitions 6/102 dead transitions. [2021-10-28 09:04:34,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 102 transitions, 490 flow [2021-10-28 09:04:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:04:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:04:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 755 transitions. [2021-10-28 09:04:34,016 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.888235294117647 [2021-10-28 09:04:34,017 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 755 transitions. [2021-10-28 09:04:34,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 755 transitions. [2021-10-28 09:04:34,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:34,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 755 transitions. [2021-10-28 09:04:34,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,026 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,026 INFO L186 Difference]: Start difference. First operand has 124 places, 84 transitions, 411 flow. Second operand 10 states and 755 transitions. [2021-10-28 09:04:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 102 transitions, 490 flow [2021-10-28 09:04:34,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 102 transitions, 440 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-10-28 09:04:34,041 INFO L242 Difference]: Finished difference. Result has 116 places, 93 transitions, 417 flow [2021-10-28 09:04:34,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=417, PETRI_PLACES=116, PETRI_TRANSITIONS=93} [2021-10-28 09:04:34,041 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2021-10-28 09:04:34,042 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 93 transitions, 417 flow [2021-10-28 09:04:34,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,044 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:34,044 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] [2021-10-28 09:04:34,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:04:34,045 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:34,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1906205189, now seen corresponding path program 1 times [2021-10-28 09:04:34,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:34,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826692531] [2021-10-28 09:04:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:34,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:34,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:34,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826692531] [2021-10-28 09:04:34,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826692531] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:34,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:34,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:04:34,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405694746] [2021-10-28 09:04:34,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:04:34,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:34,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:04:34,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:04:34,219 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-10-28 09:04:34,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 93 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:34,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-10-28 09:04:34,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:34,478 INFO L129 PetriNetUnfolder]: 55/338 cut-off events. [2021-10-28 09:04:34,478 INFO L130 PetriNetUnfolder]: For 430/552 co-relation queries the response was YES. [2021-10-28 09:04:34,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 338 events. 55/338 cut-off events. For 430/552 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2179 event pairs, 0 based on Foata normal form. 61/377 useless extension candidates. Maximal degree in co-relation 824. Up to 51 conditions per place. [2021-10-28 09:04:34,483 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 11 selfloop transitions, 17 changer transitions 18/111 dead transitions. [2021-10-28 09:04:34,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 111 transitions, 573 flow [2021-10-28 09:04:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:04:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:04:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 972 transitions. [2021-10-28 09:04:34,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8796380090497737 [2021-10-28 09:04:34,490 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 972 transitions. [2021-10-28 09:04:34,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 972 transitions. [2021-10-28 09:04:34,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:34,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 972 transitions. [2021-10-28 09:04:34,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.76923076923077) internal successors, (972), 13 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,503 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,503 INFO L186 Difference]: Start difference. First operand has 116 places, 93 transitions, 417 flow. Second operand 13 states and 972 transitions. [2021-10-28 09:04:34,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 111 transitions, 573 flow [2021-10-28 09:04:34,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 481 flow, removed 45 selfloop flow, removed 13 redundant places. [2021-10-28 09:04:34,512 INFO L242 Difference]: Finished difference. Result has 122 places, 90 transitions, 380 flow [2021-10-28 09:04:34,513 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=380, PETRI_PLACES=122, PETRI_TRANSITIONS=90} [2021-10-28 09:04:34,514 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 34 predicate places. [2021-10-28 09:04:34,514 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 90 transitions, 380 flow [2021-10-28 09:04:34,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:34,515 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] [2021-10-28 09:04:34,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:04:34,516 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:34,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:34,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1936755363, now seen corresponding path program 1 times [2021-10-28 09:04:34,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:34,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959738738] [2021-10-28 09:04:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:34,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:34,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:34,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959738738] [2021-10-28 09:04:34,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959738738] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:34,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:34,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:04:34,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121917222] [2021-10-28 09:04:34,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:04:34,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:04:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:04:34,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2021-10-28 09:04:34,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 90 transitions, 380 flow. Second operand has 13 states, 13 states have (on average 63.38461538461539) internal successors, (824), 13 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:34,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:34,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2021-10-28 09:04:34,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:35,239 INFO L129 PetriNetUnfolder]: 15/189 cut-off events. [2021-10-28 09:04:35,240 INFO L130 PetriNetUnfolder]: For 234/241 co-relation queries the response was YES. [2021-10-28 09:04:35,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 189 events. 15/189 cut-off events. For 234/241 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 833 event pairs, 0 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 458. Up to 22 conditions per place. [2021-10-28 09:04:35,243 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 14 selfloop transitions, 6 changer transitions 10/96 dead transitions. [2021-10-28 09:04:35,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 96 transitions, 453 flow [2021-10-28 09:04:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:04:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:04:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 771 transitions. [2021-10-28 09:04:35,246 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7558823529411764 [2021-10-28 09:04:35,246 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 771 transitions. [2021-10-28 09:04:35,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 771 transitions. [2021-10-28 09:04:35,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:35,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 771 transitions. [2021-10-28 09:04:35,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 64.25) internal successors, (771), 12 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:35,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:35,259 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:35,259 INFO L186 Difference]: Start difference. First operand has 122 places, 90 transitions, 380 flow. Second operand 12 states and 771 transitions. [2021-10-28 09:04:35,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 96 transitions, 453 flow [2021-10-28 09:04:35,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 96 transitions, 407 flow, removed 7 selfloop flow, removed 14 redundant places. [2021-10-28 09:04:35,273 INFO L242 Difference]: Finished difference. Result has 120 places, 86 transitions, 331 flow [2021-10-28 09:04:35,274 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=331, PETRI_PLACES=120, PETRI_TRANSITIONS=86} [2021-10-28 09:04:35,274 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 32 predicate places. [2021-10-28 09:04:35,274 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 86 transitions, 331 flow [2021-10-28 09:04:35,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 63.38461538461539) internal successors, (824), 13 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:35,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:35,276 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] [2021-10-28 09:04:35,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:04:35,276 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 09:04:35,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash 520013583, now seen corresponding path program 2 times [2021-10-28 09:04:35,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:35,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996100067] [2021-10-28 09:04:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:35,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:04:35,366 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:04:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:04:35,503 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:04:35,504 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:04:35,505 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:04:35,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:04:35,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:04:35,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:04:35,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:04:35,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:04:35,512 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:35,519 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:04:35,519 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:04:35,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:04:35 BasicIcfg [2021-10-28 09:04:35,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:04:35,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:04:35,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:04:35,714 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:04:35,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:27" (3/4) ... [2021-10-28 09:04:35,719 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:04:35,896 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:04:35,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:04:35,899 INFO L168 Benchmark]: Toolchain (without parser) took 12034.11 ms. Allocated memory was 96.5 MB in the beginning and 195.0 MB in the end (delta: 98.6 MB). Free memory was 76.8 MB in the beginning and 160.6 MB in the end (delta: -83.8 MB). Peak memory consumption was 122.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:35,899 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 54.9 MB in the beginning and 54.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:04:35,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.79 ms. Allocated memory is still 96.5 MB. Free memory was 76.4 MB in the beginning and 59.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:35,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.44 ms. Allocated memory is still 96.5 MB. Free memory was 59.7 MB in the beginning and 56.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:35,901 INFO L168 Benchmark]: Boogie Preprocessor took 77.44 ms. Allocated memory is still 96.5 MB. Free memory was 56.9 MB in the beginning and 54.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:35,901 INFO L168 Benchmark]: RCFGBuilder took 2318.51 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 37.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:35,902 INFO L168 Benchmark]: TraceAbstraction took 8578.47 ms. Allocated memory was 96.5 MB in the beginning and 195.0 MB in the end (delta: 98.6 MB). Free memory was 37.3 MB in the beginning and 69.0 MB in the end (delta: -31.7 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:35,903 INFO L168 Benchmark]: Witness Printer took 182.73 ms. Allocated memory is still 195.0 MB. Free memory was 69.0 MB in the beginning and 160.6 MB in the end (delta: -91.7 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:35,905 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 75.5 MB. Free memory was 54.9 MB in the beginning and 54.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 783.79 ms. Allocated memory is still 96.5 MB. Free memory was 76.4 MB in the beginning and 59.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.44 ms. Allocated memory is still 96.5 MB. Free memory was 59.7 MB in the beginning and 56.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.44 ms. Allocated memory is still 96.5 MB. Free memory was 56.9 MB in the beginning and 54.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2318.51 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 37.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8578.47 ms. Allocated memory was 96.5 MB in the beginning and 195.0 MB in the end (delta: 98.6 MB). Free memory was 37.3 MB in the beginning and 69.0 MB in the end (delta: -31.7 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. * Witness Printer took 182.73 ms. Allocated memory is still 195.0 MB. Free memory was 69.0 MB in the beginning and 160.6 MB in the end (delta: -91.7 MB). Peak memory consumption was 17.4 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L709] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0] [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L714] 0 int y = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L715] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L716] 0 int y$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0] [L717] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L718] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0] [L719] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L720] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0] [L721] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L722] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L723] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0] [L724] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}] [L725] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L726] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L727] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0] [L728] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L729] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L730] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L790] 0 pthread_t t2473; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L791] FCALL, FORK 0 pthread_create(&t2473, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L745] 1 x = 1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L792] 0 pthread_t t2474; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L793] FCALL, FORK 0 pthread_create(&t2474, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L762] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L769] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L770] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L771] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L772] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L748] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L748] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L749] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L749] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L750] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L750] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L751] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L752] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L3] COND FALSE 0 !(!cond) VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L800] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L800] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L801] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L802] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L803] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 y$flush_delayed = weak$$choice2 [L809] 0 y$mem_tmp = y [L810] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L810] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L811] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L811] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L812] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L812] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L813] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L813] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L815] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L818] 0 y = y$flush_delayed ? y$mem_tmp : y [L819] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L18] COND TRUE 0 !expression VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L18] 0 reach_error() VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 103 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: 8.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 278 SDslu, 419 SDs, 0 SdLazy, 676 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=417occurred in iteration=9, InterpolantAutomatonStates: 121, 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, 2.2s InterpolantComputationTime, 706 NumberOfCodeBlocks, 706 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 629 ConstructedInterpolants, 0 QuantifiedInterpolants, 2994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:04:35,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6027b47-afc9-4550-89f6-b63a3f63b8c8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...