./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe031_power.opt_pso.opt_rmo.opt.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_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe031_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 740668a6bdee7f1177df0d0d81e76f2a2521fb58ce5f63a4942f3d36e11f9dad .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:51:56,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:51:56,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:51:56,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:51:56,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:51:56,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:51:56,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:51:56,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:51:56,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:51:56,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:51:56,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:51:56,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:51:56,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:51:56,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:51:56,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:51:56,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:51:56,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:51:56,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:51:56,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:51:56,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:51:56,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:51:56,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:51:56,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:51:56,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:51:56,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:51:56,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:51:56,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:51:56,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:51:56,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:51:56,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:51:56,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:51:56,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:51:56,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:51:56,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:51:56,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:51:56,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:51:56,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:51:56,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:51:56,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:51:56,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:51:56,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:51:56,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:51:56,695 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:51:56,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:51:56,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:51:56,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:51:56,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:51:56,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:51:56,698 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:51:56,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:51:56,698 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:51:56,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:51:56,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:51:56,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:51:56,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:51:56,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:51:56,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:51:56,700 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:51:56,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:51:56,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:51:56,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:51:56,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:51:56,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:51:56,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:51:56,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:51:56,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:51:56,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:51:56,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:51:56,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:51:56,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:51:56,703 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:51:56,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:51:56,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:51:56,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:51:56,704 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_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 740668a6bdee7f1177df0d0d81e76f2a2521fb58ce5f63a4942f3d36e11f9dad [2021-10-28 22:51:57,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:51:57,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:51:57,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:51:57,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:51:57,086 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:51:57,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/pthread-wmm/safe031_power.opt_pso.opt_rmo.opt.i [2021-10-28 22:51:57,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/data/100320a4f/e6ec7735b82d4bd986e9e8e5ab83432e/FLAGa1b540058 [2021-10-28 22:51:57,745 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:51:57,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/sv-benchmarks/c/pthread-wmm/safe031_power.opt_pso.opt_rmo.opt.i [2021-10-28 22:51:57,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/data/100320a4f/e6ec7735b82d4bd986e9e8e5ab83432e/FLAGa1b540058 [2021-10-28 22:51:58,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/data/100320a4f/e6ec7735b82d4bd986e9e8e5ab83432e [2021-10-28 22:51:58,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:51:58,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:51:58,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:51:58,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:51:58,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:51:58,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7dd089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58, skipping insertion in model container [2021-10-28 22:51:58,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:51:58,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:51:58,305 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_ca26c1c4-aa98-4873-aba7-89597d20c1a7/sv-benchmarks/c/pthread-wmm/safe031_power.opt_pso.opt_rmo.opt.i[967,980] [2021-10-28 22:51:58,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:51:58,519 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:51:58,533 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_ca26c1c4-aa98-4873-aba7-89597d20c1a7/sv-benchmarks/c/pthread-wmm/safe031_power.opt_pso.opt_rmo.opt.i[967,980] [2021-10-28 22:51:58,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:51:58,662 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:51:58,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58 WrapperNode [2021-10-28 22:51:58,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:51:58,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:51:58,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:51:58,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:51:58,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:51:58,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:51:58,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:51:58,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:51:58,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:51:58,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:51:58,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:51:58,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:51:58,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (1/1) ... [2021-10-28 22:51:58,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:51:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:51:58,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:51:58,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:51:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:51:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 22:51:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:51:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:51:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 22:51:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 22:51:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 22:51:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 22:51:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 22:51:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 22:51:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:51:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 22:51:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:51:58,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:51:58,885 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 22:52:00,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:52:00,676 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 22:52:00,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:00 BoogieIcfgContainer [2021-10-28 22:52:00,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:52:00,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:52:00,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:52:00,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:52:00,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:51:58" (1/3) ... [2021-10-28 22:52:00,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493f8884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:52:00, skipping insertion in model container [2021-10-28 22:52:00,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:58" (2/3) ... [2021-10-28 22:52:00,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493f8884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:52:00, skipping insertion in model container [2021-10-28 22:52:00,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:00" (3/3) ... [2021-10-28 22:52:00,695 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_power.opt_pso.opt_rmo.opt.i [2021-10-28 22:52:00,702 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 22:52:00,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:52:00,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 22:52:00,703 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 22:52:00,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,750 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,751 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,751 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,756 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,759 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,770 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,771 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,771 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,777 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,782 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,782 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,785 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,785 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,793 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:52:00,795 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 22:52:00,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:52:00,897 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 22:52:00,897 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 22:52:00,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 105 transitions, 225 flow [2021-10-28 22:52:00,980 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2021-10-28 22:52:00,981 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 22:52:00,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2021-10-28 22:52:00,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 105 transitions, 225 flow [2021-10-28 22:52:00,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 102 transitions, 213 flow [2021-10-28 22:52:01,020 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2021-10-28 22:52:01,021 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 22:52:01,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:01,022 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] [2021-10-28 22:52:01,022 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 656848398, now seen corresponding path program 1 times [2021-10-28 22:52:01,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:01,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469489389] [2021-10-28 22:52:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:01,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:01,458 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 22:52:01,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:01,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469489389] [2021-10-28 22:52:01,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469489389] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:01,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:01,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:52:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846678980] [2021-10-28 22:52:01,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:52:01,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:52:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:52:01,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 105 [2021-10-28 22:52:01,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 22:52:01,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:01,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 105 [2021-10-28 22:52:01,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:01,651 INFO L129 PetriNetUnfolder]: 16/214 cut-off events. [2021-10-28 22:52:01,651 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 22:52:01,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 214 events. 16/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 655 event pairs, 6 based on Foata normal form. 9/212 useless extension candidates. Maximal degree in co-relation 212. Up to 27 conditions per place. [2021-10-28 22:52:01,657 INFO L132 encePairwiseOnDemand]: 100/105 looper letters, 7 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2021-10-28 22:52:01,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 101 transitions, 229 flow [2021-10-28 22:52:01,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:52:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 22:52:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2021-10-28 22:52:01,678 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9492063492063492 [2021-10-28 22:52:01,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2021-10-28 22:52:01,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2021-10-28 22:52:01,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:01,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2021-10-28 22:52:01,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 22:52:01,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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 22:52:01,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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 22:52:01,704 INFO L186 Difference]: Start difference. First operand has 110 places, 102 transitions, 213 flow. Second operand 3 states and 299 transitions. [2021-10-28 22:52:01,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 101 transitions, 229 flow [2021-10-28 22:52:01,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 22:52:01,714 INFO L242 Difference]: Finished difference. Result has 107 places, 98 transitions, 206 flow [2021-10-28 22:52:01,716 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=107, PETRI_TRANSITIONS=98} [2021-10-28 22:52:01,717 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, -3 predicate places. [2021-10-28 22:52:01,718 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 98 transitions, 206 flow [2021-10-28 22:52:01,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 22:52:01,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:01,719 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:01,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:52:01,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:01,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash 685451183, now seen corresponding path program 1 times [2021-10-28 22:52:01,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:01,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105828797] [2021-10-28 22:52:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:01,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:02,035 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 22:52:02,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:02,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105828797] [2021-10-28 22:52:02,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105828797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:02,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:02,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:52:02,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663490094] [2021-10-28 22:52:02,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:52:02,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:02,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:52:02,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:52:02,041 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 105 [2021-10-28 22:52:02,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 98 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 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 22:52:02,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:02,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 105 [2021-10-28 22:52:02,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:02,237 INFO L129 PetriNetUnfolder]: 30/261 cut-off events. [2021-10-28 22:52:02,238 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 22:52:02,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 261 events. 30/261 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1010 event pairs, 6 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 298. Up to 36 conditions per place. [2021-10-28 22:52:02,243 INFO L132 encePairwiseOnDemand]: 98/105 looper letters, 8 selfloop transitions, 3 changer transitions 31/121 dead transitions. [2021-10-28 22:52:02,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 318 flow [2021-10-28 22:52:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:52:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 22:52:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 863 transitions. [2021-10-28 22:52:02,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9132275132275133 [2021-10-28 22:52:02,248 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 863 transitions. [2021-10-28 22:52:02,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 863 transitions. [2021-10-28 22:52:02,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:02,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 863 transitions. [2021-10-28 22:52:02,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.88888888888889) internal successors, (863), 9 states have internal predecessors, (863), 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 22:52:02,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:02,259 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:02,259 INFO L186 Difference]: Start difference. First operand has 107 places, 98 transitions, 206 flow. Second operand 9 states and 863 transitions. [2021-10-28 22:52:02,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 318 flow [2021-10-28 22:52:02,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 121 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 22:52:02,265 INFO L242 Difference]: Finished difference. Result has 120 places, 90 transitions, 225 flow [2021-10-28 22:52:02,266 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=120, PETRI_TRANSITIONS=90} [2021-10-28 22:52:02,266 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2021-10-28 22:52:02,267 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 90 transitions, 225 flow [2021-10-28 22:52:02,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 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 22:52:02,267 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:02,268 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:02,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:52:02,272 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 607739216, now seen corresponding path program 1 times [2021-10-28 22:52:02,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:02,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096789945] [2021-10-28 22:52:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:02,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:02,629 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 22:52:02,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:02,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096789945] [2021-10-28 22:52:02,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096789945] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:02,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:02,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 22:52:02,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351066608] [2021-10-28 22:52:02,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:52:02,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:52:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:52:02,637 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 105 [2021-10-28 22:52:02,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 90 transitions, 225 flow. Second operand has 11 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 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 22:52:02,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:02,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 105 [2021-10-28 22:52:02,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:03,095 INFO L129 PetriNetUnfolder]: 211/540 cut-off events. [2021-10-28 22:52:03,096 INFO L130 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2021-10-28 22:52:03,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 540 events. 211/540 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2660 event pairs, 94 based on Foata normal form. 12/539 useless extension candidates. Maximal degree in co-relation 1235. Up to 230 conditions per place. [2021-10-28 22:52:03,104 INFO L132 encePairwiseOnDemand]: 92/105 looper letters, 12 selfloop transitions, 11 changer transitions 34/131 dead transitions. [2021-10-28 22:52:03,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 131 transitions, 449 flow [2021-10-28 22:52:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 22:52:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 22:52:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1404 transitions. [2021-10-28 22:52:03,110 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8357142857142857 [2021-10-28 22:52:03,110 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1404 transitions. [2021-10-28 22:52:03,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1404 transitions. [2021-10-28 22:52:03,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:03,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1404 transitions. [2021-10-28 22:52:03,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 87.75) internal successors, (1404), 16 states have internal predecessors, (1404), 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 22:52:03,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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 22:52:03,124 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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 22:52:03,125 INFO L186 Difference]: Start difference. First operand has 120 places, 90 transitions, 225 flow. Second operand 16 states and 1404 transitions. [2021-10-28 22:52:03,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 131 transitions, 449 flow [2021-10-28 22:52:03,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 131 transitions, 428 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-10-28 22:52:03,134 INFO L242 Difference]: Finished difference. Result has 126 places, 96 transitions, 304 flow [2021-10-28 22:52:03,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=304, PETRI_PLACES=126, PETRI_TRANSITIONS=96} [2021-10-28 22:52:03,134 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 16 predicate places. [2021-10-28 22:52:03,135 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 96 transitions, 304 flow [2021-10-28 22:52:03,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 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 22:52:03,136 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:03,136 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:03,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:52:03,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash 132410734, now seen corresponding path program 1 times [2021-10-28 22:52:03,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:03,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603443018] [2021-10-28 22:52:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:03,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:03,328 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 22:52:03,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:03,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603443018] [2021-10-28 22:52:03,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603443018] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:03,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:03,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:52:03,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676704167] [2021-10-28 22:52:03,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:52:03,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:52:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:52:03,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 105 [2021-10-28 22:52:03,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 96 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 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 22:52:03,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:03,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 105 [2021-10-28 22:52:03,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:03,570 INFO L129 PetriNetUnfolder]: 76/370 cut-off events. [2021-10-28 22:52:03,570 INFO L130 PetriNetUnfolder]: For 1072/1132 co-relation queries the response was YES. [2021-10-28 22:52:03,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 370 events. 76/370 cut-off events. For 1072/1132 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1869 event pairs, 20 based on Foata normal form. 12/368 useless extension candidates. Maximal degree in co-relation 1119. Up to 79 conditions per place. [2021-10-28 22:52:03,579 INFO L132 encePairwiseOnDemand]: 99/105 looper letters, 15 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2021-10-28 22:52:03,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 111 transitions, 479 flow [2021-10-28 22:52:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:52:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 22:52:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 854 transitions. [2021-10-28 22:52:03,583 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9037037037037037 [2021-10-28 22:52:03,583 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 854 transitions. [2021-10-28 22:52:03,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 854 transitions. [2021-10-28 22:52:03,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:03,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 854 transitions. [2021-10-28 22:52:03,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.88888888888889) internal successors, (854), 9 states have internal predecessors, (854), 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 22:52:03,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:03,591 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:03,591 INFO L186 Difference]: Start difference. First operand has 126 places, 96 transitions, 304 flow. Second operand 9 states and 854 transitions. [2021-10-28 22:52:03,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 111 transitions, 479 flow [2021-10-28 22:52:03,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 445 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-10-28 22:52:03,603 INFO L242 Difference]: Finished difference. Result has 126 places, 105 transitions, 422 flow [2021-10-28 22:52:03,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=422, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2021-10-28 22:52:03,604 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 16 predicate places. [2021-10-28 22:52:03,604 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 422 flow [2021-10-28 22:52:03,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 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 22:52:03,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:03,605 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:03,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:52:03,606 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:03,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1824248590, now seen corresponding path program 1 times [2021-10-28 22:52:03,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:03,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258993578] [2021-10-28 22:52:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:03,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:03,954 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 22:52:03,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:03,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258993578] [2021-10-28 22:52:03,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258993578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:03,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:03,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 22:52:03,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690168586] [2021-10-28 22:52:03,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:52:03,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:52:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:52:03,961 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 105 [2021-10-28 22:52:03,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 422 flow. Second operand has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 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 22:52:03,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:03,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 105 [2021-10-28 22:52:03,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:04,491 INFO L129 PetriNetUnfolder]: 299/817 cut-off events. [2021-10-28 22:52:04,491 INFO L130 PetriNetUnfolder]: For 3352/3427 co-relation queries the response was YES. [2021-10-28 22:52:04,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 817 events. 299/817 cut-off events. For 3352/3427 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5235 event pairs, 130 based on Foata normal form. 24/822 useless extension candidates. Maximal degree in co-relation 2990. Up to 282 conditions per place. [2021-10-28 22:52:04,503 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 13 selfloop transitions, 11 changer transitions 41/139 dead transitions. [2021-10-28 22:52:04,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 139 transitions, 824 flow [2021-10-28 22:52:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 22:52:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 22:52:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1222 transitions. [2021-10-28 22:52:04,509 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8312925170068027 [2021-10-28 22:52:04,509 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1222 transitions. [2021-10-28 22:52:04,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1222 transitions. [2021-10-28 22:52:04,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:04,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1222 transitions. [2021-10-28 22:52:04,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.28571428571429) internal successors, (1222), 14 states have internal predecessors, (1222), 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 22:52:04,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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 22:52:04,520 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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 22:52:04,520 INFO L186 Difference]: Start difference. First operand has 126 places, 105 transitions, 422 flow. Second operand 14 states and 1222 transitions. [2021-10-28 22:52:04,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 139 transitions, 824 flow [2021-10-28 22:52:04,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 139 transitions, 743 flow, removed 39 selfloop flow, removed 1 redundant places. [2021-10-28 22:52:04,543 INFO L242 Difference]: Finished difference. Result has 145 places, 97 transitions, 372 flow [2021-10-28 22:52:04,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=372, PETRI_PLACES=145, PETRI_TRANSITIONS=97} [2021-10-28 22:52:04,544 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 35 predicate places. [2021-10-28 22:52:04,544 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 97 transitions, 372 flow [2021-10-28 22:52:04,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 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 22:52:04,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:04,545 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:04,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:52:04,546 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:04,546 INFO L85 PathProgramCache]: Analyzing trace with hash -107272828, now seen corresponding path program 1 times [2021-10-28 22:52:04,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:04,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908153309] [2021-10-28 22:52:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:04,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:04,817 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 22:52:04,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:04,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908153309] [2021-10-28 22:52:04,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908153309] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:04,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:04,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 22:52:04,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718463413] [2021-10-28 22:52:04,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:52:04,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:04,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:52:04,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:52:04,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 105 [2021-10-28 22:52:04,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 97 transitions, 372 flow. Second operand has 10 states, 10 states have (on average 86.2) internal successors, (862), 10 states have internal predecessors, (862), 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 22:52:04,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:04,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 105 [2021-10-28 22:52:04,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:05,290 INFO L129 PetriNetUnfolder]: 113/416 cut-off events. [2021-10-28 22:52:05,290 INFO L130 PetriNetUnfolder]: For 2988/3035 co-relation queries the response was YES. [2021-10-28 22:52:05,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 416 events. 113/416 cut-off events. For 2988/3035 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1991 event pairs, 34 based on Foata normal form. 11/414 useless extension candidates. Maximal degree in co-relation 1599. Up to 148 conditions per place. [2021-10-28 22:52:05,298 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 23 selfloop transitions, 8 changer transitions 25/131 dead transitions. [2021-10-28 22:52:05,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 131 transitions, 806 flow [2021-10-28 22:52:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 22:52:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-28 22:52:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1328 transitions. [2021-10-28 22:52:05,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8431746031746031 [2021-10-28 22:52:05,304 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1328 transitions. [2021-10-28 22:52:05,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1328 transitions. [2021-10-28 22:52:05,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:05,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1328 transitions. [2021-10-28 22:52:05,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.53333333333333) internal successors, (1328), 15 states have internal predecessors, (1328), 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 22:52:05,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 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 22:52:05,315 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 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 22:52:05,316 INFO L186 Difference]: Start difference. First operand has 145 places, 97 transitions, 372 flow. Second operand 15 states and 1328 transitions. [2021-10-28 22:52:05,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 131 transitions, 806 flow [2021-10-28 22:52:05,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 707 flow, removed 41 selfloop flow, removed 15 redundant places. [2021-10-28 22:52:05,328 INFO L242 Difference]: Finished difference. Result has 142 places, 99 transitions, 386 flow [2021-10-28 22:52:05,329 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=386, PETRI_PLACES=142, PETRI_TRANSITIONS=99} [2021-10-28 22:52:05,329 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 32 predicate places. [2021-10-28 22:52:05,329 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 99 transitions, 386 flow [2021-10-28 22:52:05,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.2) internal successors, (862), 10 states have internal predecessors, (862), 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 22:52:05,330 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:05,330 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:05,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 22:52:05,331 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:05,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1124511954, now seen corresponding path program 1 times [2021-10-28 22:52:05,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:05,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631494713] [2021-10-28 22:52:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:05,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:05,520 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 22:52:05,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:05,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631494713] [2021-10-28 22:52:05,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631494713] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:05,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:05,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 22:52:05,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172254276] [2021-10-28 22:52:05,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:52:05,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:05,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:52:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:52:05,525 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 105 [2021-10-28 22:52:05,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 99 transitions, 386 flow. Second operand has 10 states, 10 states have (on average 86.3) internal successors, (863), 10 states have internal predecessors, (863), 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 22:52:05,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:05,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 105 [2021-10-28 22:52:05,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:05,859 INFO L129 PetriNetUnfolder]: 87/366 cut-off events. [2021-10-28 22:52:05,860 INFO L130 PetriNetUnfolder]: For 2662/2717 co-relation queries the response was YES. [2021-10-28 22:52:05,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 366 events. 87/366 cut-off events. For 2662/2717 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1674 event pairs, 25 based on Foata normal form. 13/371 useless extension candidates. Maximal degree in co-relation 1472. Up to 146 conditions per place. [2021-10-28 22:52:05,867 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 19 selfloop transitions, 10 changer transitions 13/117 dead transitions. [2021-10-28 22:52:05,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 117 transitions, 672 flow [2021-10-28 22:52:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 22:52:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 22:52:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1143 transitions. [2021-10-28 22:52:05,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8373626373626374 [2021-10-28 22:52:05,873 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1143 transitions. [2021-10-28 22:52:05,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1143 transitions. [2021-10-28 22:52:05,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:05,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1143 transitions. [2021-10-28 22:52:05,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.92307692307692) internal successors, (1143), 13 states have internal predecessors, (1143), 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 22:52:05,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 22:52:05,883 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 22:52:05,884 INFO L186 Difference]: Start difference. First operand has 142 places, 99 transitions, 386 flow. Second operand 13 states and 1143 transitions. [2021-10-28 22:52:05,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 117 transitions, 672 flow [2021-10-28 22:52:05,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 117 transitions, 570 flow, removed 45 selfloop flow, removed 12 redundant places. [2021-10-28 22:52:05,898 INFO L242 Difference]: Finished difference. Result has 141 places, 102 transitions, 403 flow [2021-10-28 22:52:05,898 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=403, PETRI_PLACES=141, PETRI_TRANSITIONS=102} [2021-10-28 22:52:05,899 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 31 predicate places. [2021-10-28 22:52:05,899 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 102 transitions, 403 flow [2021-10-28 22:52:05,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.3) internal successors, (863), 10 states have internal predecessors, (863), 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 22:52:05,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:05,900 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:05,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 22:52:05,900 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:05,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1685507443, now seen corresponding path program 1 times [2021-10-28 22:52:05,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:05,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487299113] [2021-10-28 22:52:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:05,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:06,044 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 22:52:06,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:06,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487299113] [2021-10-28 22:52:06,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487299113] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:06,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:06,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:52:06,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736663747] [2021-10-28 22:52:06,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:52:06,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:52:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:52:06,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 105 [2021-10-28 22:52:06,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 102 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 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 22:52:06,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:06,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 105 [2021-10-28 22:52:06,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:06,400 INFO L129 PetriNetUnfolder]: 446/1156 cut-off events. [2021-10-28 22:52:06,400 INFO L130 PetriNetUnfolder]: For 2693/2714 co-relation queries the response was YES. [2021-10-28 22:52:06,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 1156 events. 446/1156 cut-off events. For 2693/2714 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8456 event pairs, 55 based on Foata normal form. 1/1051 useless extension candidates. Maximal degree in co-relation 3090. Up to 262 conditions per place. [2021-10-28 22:52:06,419 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 21 selfloop transitions, 15 changer transitions 5/132 dead transitions. [2021-10-28 22:52:06,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 545 flow [2021-10-28 22:52:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:52:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 22:52:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 953 transitions. [2021-10-28 22:52:06,423 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9076190476190477 [2021-10-28 22:52:06,423 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 953 transitions. [2021-10-28 22:52:06,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 953 transitions. [2021-10-28 22:52:06,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:06,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 953 transitions. [2021-10-28 22:52:06,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 95.3) internal successors, (953), 10 states have internal predecessors, (953), 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 22:52:06,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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 22:52:06,432 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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 22:52:06,432 INFO L186 Difference]: Start difference. First operand has 141 places, 102 transitions, 403 flow. Second operand 10 states and 953 transitions. [2021-10-28 22:52:06,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 545 flow [2021-10-28 22:52:06,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 507 flow, removed 13 selfloop flow, removed 13 redundant places. [2021-10-28 22:52:06,446 INFO L242 Difference]: Finished difference. Result has 137 places, 115 transitions, 474 flow [2021-10-28 22:52:06,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=474, PETRI_PLACES=137, PETRI_TRANSITIONS=115} [2021-10-28 22:52:06,447 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 27 predicate places. [2021-10-28 22:52:06,447 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 115 transitions, 474 flow [2021-10-28 22:52:06,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 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 22:52:06,448 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:06,448 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:06,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 22:52:06,448 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash 483985724, now seen corresponding path program 1 times [2021-10-28 22:52:06,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:06,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9853903] [2021-10-28 22:52:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:06,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:06,570 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 22:52:06,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:06,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9853903] [2021-10-28 22:52:06,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9853903] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:06,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:06,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 22:52:06,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068010596] [2021-10-28 22:52:06,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:52:06,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:06,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:52:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:52:06,574 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 105 [2021-10-28 22:52:06,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 115 transitions, 474 flow. Second operand has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 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 22:52:06,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:06,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 105 [2021-10-28 22:52:06,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:06,927 INFO L129 PetriNetUnfolder]: 352/983 cut-off events. [2021-10-28 22:52:06,927 INFO L130 PetriNetUnfolder]: For 2586/3156 co-relation queries the response was YES. [2021-10-28 22:52:06,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3453 conditions, 983 events. 352/983 cut-off events. For 2586/3156 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7350 event pairs, 12 based on Foata normal form. 129/1042 useless extension candidates. Maximal degree in co-relation 3376. Up to 358 conditions per place. [2021-10-28 22:52:06,942 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 20 selfloop transitions, 28 changer transitions 11/144 dead transitions. [2021-10-28 22:52:06,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 780 flow [2021-10-28 22:52:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 22:52:06,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 22:52:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1238 transitions. [2021-10-28 22:52:06,947 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.906959706959707 [2021-10-28 22:52:06,948 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1238 transitions. [2021-10-28 22:52:06,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1238 transitions. [2021-10-28 22:52:06,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:06,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1238 transitions. [2021-10-28 22:52:06,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 95.23076923076923) internal successors, (1238), 13 states have internal predecessors, (1238), 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 22:52:06,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 22:52:06,958 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 22:52:06,959 INFO L186 Difference]: Start difference. First operand has 137 places, 115 transitions, 474 flow. Second operand 13 states and 1238 transitions. [2021-10-28 22:52:06,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 780 flow [2021-10-28 22:52:06,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 144 transitions, 755 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-10-28 22:52:06,971 INFO L242 Difference]: Finished difference. Result has 149 places, 126 transitions, 639 flow [2021-10-28 22:52:06,972 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=639, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2021-10-28 22:52:06,972 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 39 predicate places. [2021-10-28 22:52:06,973 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 639 flow [2021-10-28 22:52:06,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 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 22:52:06,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:06,973 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:06,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 22:52:06,974 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash 451543705, now seen corresponding path program 1 times [2021-10-28 22:52:06,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:06,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087337275] [2021-10-28 22:52:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:06,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:07,097 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 22:52:07,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:07,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087337275] [2021-10-28 22:52:07,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087337275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:07,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:07,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 22:52:07,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739275135] [2021-10-28 22:52:07,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:52:07,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:07,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:52:07,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:52:07,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 105 [2021-10-28 22:52:07,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 639 flow. Second operand has 8 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 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 22:52:07,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:07,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 105 [2021-10-28 22:52:07,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:07,502 INFO L129 PetriNetUnfolder]: 254/820 cut-off events. [2021-10-28 22:52:07,502 INFO L130 PetriNetUnfolder]: For 4090/5485 co-relation queries the response was YES. [2021-10-28 22:52:07,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 820 events. 254/820 cut-off events. For 4090/5485 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6480 event pairs, 0 based on Foata normal form. 148/900 useless extension candidates. Maximal degree in co-relation 3504. Up to 272 conditions per place. [2021-10-28 22:52:07,517 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 16 selfloop transitions, 32 changer transitions 19/152 dead transitions. [2021-10-28 22:52:07,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 955 flow [2021-10-28 22:52:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 22:52:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 22:52:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1508 transitions. [2021-10-28 22:52:07,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8976190476190476 [2021-10-28 22:52:07,521 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1508 transitions. [2021-10-28 22:52:07,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1508 transitions. [2021-10-28 22:52:07,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:07,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1508 transitions. [2021-10-28 22:52:07,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.25) internal successors, (1508), 16 states have internal predecessors, (1508), 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 22:52:07,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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 22:52:07,532 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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 22:52:07,532 INFO L186 Difference]: Start difference. First operand has 149 places, 126 transitions, 639 flow. Second operand 16 states and 1508 transitions. [2021-10-28 22:52:07,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 955 flow [2021-10-28 22:52:07,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 831 flow, removed 54 selfloop flow, removed 14 redundant places. [2021-10-28 22:52:07,565 INFO L242 Difference]: Finished difference. Result has 157 places, 127 transitions, 629 flow [2021-10-28 22:52:07,565 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=629, PETRI_PLACES=157, PETRI_TRANSITIONS=127} [2021-10-28 22:52:07,566 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 47 predicate places. [2021-10-28 22:52:07,566 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 127 transitions, 629 flow [2021-10-28 22:52:07,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 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 22:52:07,567 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:07,567 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:07,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 22:52:07,567 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:07,568 INFO L85 PathProgramCache]: Analyzing trace with hash 429389498, now seen corresponding path program 1 times [2021-10-28 22:52:07,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:07,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348451798] [2021-10-28 22:52:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:07,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:07,818 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 22:52:07,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:07,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348451798] [2021-10-28 22:52:07,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348451798] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:07,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:07,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 22:52:07,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126951470] [2021-10-28 22:52:07,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 22:52:07,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:07,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 22:52:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:52:07,823 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-10-28 22:52:07,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 127 transitions, 629 flow. Second operand has 13 states, 13 states have (on average 82.46153846153847) internal successors, (1072), 13 states have internal predecessors, (1072), 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 22:52:07,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:07,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-10-28 22:52:07,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:08,452 INFO L129 PetriNetUnfolder]: 351/1712 cut-off events. [2021-10-28 22:52:08,452 INFO L130 PetriNetUnfolder]: For 4437/4701 co-relation queries the response was YES. [2021-10-28 22:52:08,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5648 conditions, 1712 events. 351/1712 cut-off events. For 4437/4701 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 18383 event pairs, 1 based on Foata normal form. 9/1608 useless extension candidates. Maximal degree in co-relation 5564. Up to 239 conditions per place. [2021-10-28 22:52:08,474 INFO L132 encePairwiseOnDemand]: 92/105 looper letters, 17 selfloop transitions, 5 changer transitions 34/154 dead transitions. [2021-10-28 22:52:08,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 154 transitions, 841 flow [2021-10-28 22:52:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 22:52:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 22:52:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1343 transitions. [2021-10-28 22:52:08,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.799404761904762 [2021-10-28 22:52:08,478 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1343 transitions. [2021-10-28 22:52:08,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1343 transitions. [2021-10-28 22:52:08,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:08,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1343 transitions. [2021-10-28 22:52:08,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 83.9375) internal successors, (1343), 16 states have internal predecessors, (1343), 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 22:52:08,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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 22:52:08,488 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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 22:52:08,488 INFO L186 Difference]: Start difference. First operand has 157 places, 127 transitions, 629 flow. Second operand 16 states and 1343 transitions. [2021-10-28 22:52:08,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 154 transitions, 841 flow [2021-10-28 22:52:08,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 744 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-10-28 22:52:08,592 INFO L242 Difference]: Finished difference. Result has 163 places, 119 transitions, 526 flow [2021-10-28 22:52:08,592 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=526, PETRI_PLACES=163, PETRI_TRANSITIONS=119} [2021-10-28 22:52:08,592 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 53 predicate places. [2021-10-28 22:52:08,593 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 119 transitions, 526 flow [2021-10-28 22:52:08,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 82.46153846153847) internal successors, (1072), 13 states have internal predecessors, (1072), 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 22:52:08,594 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:08,594 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:08,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 22:52:08,594 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:08,595 INFO L85 PathProgramCache]: Analyzing trace with hash -44437154, now seen corresponding path program 2 times [2021-10-28 22:52:08,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:08,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54096082] [2021-10-28 22:52:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:08,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:08,926 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 22:52:08,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:08,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54096082] [2021-10-28 22:52:08,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54096082] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:08,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:08,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 22:52:08,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931357198] [2021-10-28 22:52:08,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:52:08,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:08,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:52:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:52:08,931 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 105 [2021-10-28 22:52:08,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 119 transitions, 526 flow. Second operand has 12 states, 12 states have (on average 83.5) internal successors, (1002), 12 states have internal predecessors, (1002), 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 22:52:08,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:52:08,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 105 [2021-10-28 22:52:08,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:52:09,211 INFO L129 PetriNetUnfolder]: 73/559 cut-off events. [2021-10-28 22:52:09,212 INFO L130 PetriNetUnfolder]: For 776/790 co-relation queries the response was YES. [2021-10-28 22:52:09,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 559 events. 73/559 cut-off events. For 776/790 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4370 event pairs, 0 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 1495. Up to 66 conditions per place. [2021-10-28 22:52:09,218 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 14 selfloop transitions, 7 changer transitions 5/125 dead transitions. [2021-10-28 22:52:09,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 125 transitions, 604 flow [2021-10-28 22:52:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:52:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 22:52:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 846 transitions. [2021-10-28 22:52:09,221 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8057142857142857 [2021-10-28 22:52:09,221 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 846 transitions. [2021-10-28 22:52:09,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 846 transitions. [2021-10-28 22:52:09,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:09,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 846 transitions. [2021-10-28 22:52:09,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.6) internal successors, (846), 10 states have internal predecessors, (846), 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 22:52:09,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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 22:52:09,228 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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 22:52:09,228 INFO L186 Difference]: Start difference. First operand has 163 places, 119 transitions, 526 flow. Second operand 10 states and 846 transitions. [2021-10-28 22:52:09,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 125 transitions, 604 flow [2021-10-28 22:52:09,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 125 transitions, 557 flow, removed 17 selfloop flow, removed 15 redundant places. [2021-10-28 22:52:09,243 INFO L242 Difference]: Finished difference. Result has 149 places, 119 transitions, 516 flow [2021-10-28 22:52:09,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=516, PETRI_PLACES=149, PETRI_TRANSITIONS=119} [2021-10-28 22:52:09,243 INFO L334 CegarLoopForPetriNet]: 110 programPoint places, 39 predicate places. [2021-10-28 22:52:09,244 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 119 transitions, 516 flow [2021-10-28 22:52:09,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 83.5) internal successors, (1002), 12 states have internal predecessors, (1002), 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 22:52:09,245 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:52:09,245 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:09,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 22:52:09,245 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-28 22:52:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:09,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1747414836, now seen corresponding path program 3 times [2021-10-28 22:52:09,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:09,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306258032] [2021-10-28 22:52:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:09,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:09,294 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:09,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:09,398 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:52:09,399 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:52:09,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:52:09,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 22:52:09,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 22:52:09,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 22:52:09,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:52:09,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 22:52:09,406 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:09,411 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 22:52:09,411 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:52:09,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:52:09 BasicIcfg [2021-10-28 22:52:09,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:52:09,604 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:52:09,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:52:09,605 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:52:09,605 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:00" (3/4) ... [2021-10-28 22:52:09,608 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 22:52:09,766 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:52:09,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:52:09,768 INFO L168 Benchmark]: Toolchain (without parser) took 11739.29 ms. Allocated memory was 98.6 MB in the beginning and 220.2 MB in the end (delta: 121.6 MB). Free memory was 63.2 MB in the beginning and 156.6 MB in the end (delta: -93.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:09,768 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory was 51.4 MB in the beginning and 51.3 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:52:09,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.42 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 61.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:09,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.87 ms. Allocated memory is still 98.6 MB. Free memory was 61.9 MB in the beginning and 58.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:09,769 INFO L168 Benchmark]: Boogie Preprocessor took 64.25 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 56.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:09,770 INFO L168 Benchmark]: RCFGBuilder took 1892.89 ms. Allocated memory is still 98.6 MB. Free memory was 56.8 MB in the beginning and 44.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:09,770 INFO L168 Benchmark]: TraceAbstraction took 8919.52 ms. Allocated memory was 98.6 MB in the beginning and 220.2 MB in the end (delta: 121.6 MB). Free memory was 43.4 MB in the beginning and 184.9 MB in the end (delta: -141.5 MB). Peak memory consumption was 108.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:09,770 INFO L168 Benchmark]: Witness Printer took 162.05 ms. Allocated memory is still 220.2 MB. Free memory was 184.9 MB in the beginning and 156.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:09,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory was 51.4 MB in the beginning and 51.3 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 621.42 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 61.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.87 ms. Allocated memory is still 98.6 MB. Free memory was 61.9 MB in the beginning and 58.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.25 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 56.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1892.89 ms. Allocated memory is still 98.6 MB. Free memory was 56.8 MB in the beginning and 44.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8919.52 ms. Allocated memory was 98.6 MB in the beginning and 220.2 MB in the end (delta: 121.6 MB). Free memory was 43.4 MB in the beginning and 184.9 MB in the end (delta: -141.5 MB). Peak memory consumption was 108.4 MB. Max. memory is 16.1 GB. * Witness Printer took 162.05 ms. Allocated memory is still 220.2 MB. Free memory was 184.9 MB in the beginning and 156.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 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: [L709] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L711] 0 int __unbuffered_p0_EAX = 0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0] [L712] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0] [L713] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0] [L715] 0 int x = 0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L717] 0 int y = 0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L718] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L719] 0 int y$mem_tmp; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0] [L720] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L721] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$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$r_buff0_thd1=0] [L722] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=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$r_buff0_thd2=0] [L723] 0 _Bool y$r_buff0_thd3; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=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_buff0_thd3=0] [L724] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$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$r_buff0_thd3=0, y$r_buff1_thd0=0] [L725] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$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$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L726] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L727] 0 _Bool y$r_buff1_thd3; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0] [L728] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$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$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0] [L729] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$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$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}] [L730] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L731] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L732] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$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$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0] [L733] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$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$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L735] 0 int z = 0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$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$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$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, z=0] [L736] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L737] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t2516; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L816] FCALL, FORK 0 pthread_create(&t2516, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L817] 0 pthread_t t2517; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L818] FCALL, FORK 0 pthread_create(&t2517, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L819] 0 pthread_t t2518; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L820] FCALL, FORK 0 pthread_create(&t2518, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L778] 3 y$w_buff1 = y$w_buff0 [L779] 3 y$w_buff0 = 2 [L780] 3 y$w_buff1_used = y$w_buff0_used [L781] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L783] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L784] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L785] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L786] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L787] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L790] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L741] 1 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L746] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L758] 2 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L761] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, 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_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=2] [L764] 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) [L764] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L764] 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) [L764] 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) [L765] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L765] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L766] 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 [L767] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L767] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L768] 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 [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L793] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L794] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L794] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L795] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L795] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L796] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L796] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L797] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L797] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L800] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L751] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L771] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L822] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L3] COND FALSE 0 !(!cond) VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L826] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L826] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L827] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L827] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L828] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L828] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L829] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L829] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L830] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L830] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L833] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L834] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L835] 0 y$flush_delayed = weak$$choice2 [L836] 0 y$mem_tmp = y [L837] EXPR 0 !y$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) [L837] 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) [L838] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L838] 0 y$w_buff0 = weak$$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)) [L839] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L839] 0 y$w_buff1 = weak$$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)) [L840] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L840] 0 y$w_buff0_used = weak$$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)) [L841] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] 0 y$w_buff1_used = weak$$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)) [L842] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L842] 0 y$r_buff0_thd0 = weak$$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)) [L843] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L843] 0 y$r_buff1_thd0 = weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L844] 0 main$tmp_guard1 = !(y == 2 && z == 2 && __unbuffered_p0_EAX == 0) [L845] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L845] 0 y = y$flush_delayed ? y$mem_tmp : y [L846] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=1, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=2] [L18] COND TRUE 0 !expression VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=1, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=2] [L18] 0 reach_error() VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=1, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=2] - 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: 818]: 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: 816]: 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: 820]: 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 7 procedures, 131 locations, 6 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: 8.5s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 437 SDslu, 511 SDs, 0 SdLazy, 797 SolverSat, 187 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred in iteration=9, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 943 NumberOfCodeBlocks, 943 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 850 ConstructedInterpolants, 0 QuantifiedInterpolants, 4566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 22:52:09,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca26c1c4-aa98-4873-aba7-89597d20c1a7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...