./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.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_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/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_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/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_80be391f-806a-45e3-8a39-225cca758802/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 c7ad355285e5417b937f8a08f184fc0a0a37959739431619e1a468adea7839a5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:05:23,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:05:23,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:05:23,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:05:23,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:05:23,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:05:23,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:05:23,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:05:24,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:05:24,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:05:24,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:05:24,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:05:24,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:05:24,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:05:24,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:05:24,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:05:24,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:05:24,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:05:24,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:05:24,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:05:24,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:05:24,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:05:24,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:05:24,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:05:24,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:05:24,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:05:24,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:05:24,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:05:24,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:05:24,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:05:24,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:05:24,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:05:24,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:05:24,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:05:24,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:05:24,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:05:24,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:05:24,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:05:24,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:05:24,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:05:24,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:05:24,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:05:24,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:05:24,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:05:24,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:05:24,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:05:24,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:05:24,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:05:24,125 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:05:24,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:05:24,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:05:24,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:05:24,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:05:24,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:05:24,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:05:24,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:05:24,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:05:24,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:05:24,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:05:24,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:05:24,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:05:24,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:05:24,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:05:24,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:05:24,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:05:24,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:05:24,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:05:24,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:05:24,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:05:24,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:05:24,132 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:05:24,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:05:24,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:05:24,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:05:24,133 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_80be391f-806a-45e3-8a39-225cca758802/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7ad355285e5417b937f8a08f184fc0a0a37959739431619e1a468adea7839a5 [2021-10-28 23:05:24,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:05:24,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:05:24,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:05:24,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:05:24,451 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:05:24,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2021-10-28 23:05:24,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/data/20858c75d/a5bcc28c04764888b6ac0bbff9e800c1/FLAGee21a3b39 [2021-10-28 23:05:25,145 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:05:25,146 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2021-10-28 23:05:25,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/data/20858c75d/a5bcc28c04764888b6ac0bbff9e800c1/FLAGee21a3b39 [2021-10-28 23:05:25,437 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/data/20858c75d/a5bcc28c04764888b6ac0bbff9e800c1 [2021-10-28 23:05:25,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:05:25,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:05:25,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:25,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:05:25,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:05:25,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:25" (1/1) ... [2021-10-28 23:05:25,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645dd423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:25, skipping insertion in model container [2021-10-28 23:05:25,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:25" (1/1) ... [2021-10-28 23:05:25,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:05:25,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:05:25,749 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_80be391f-806a-45e3-8a39-225cca758802/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[835,848] [2021-10-28 23:05:25,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:25,975 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:05:25,995 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_80be391f-806a-45e3-8a39-225cca758802/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[835,848] [2021-10-28 23:05:26,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:26,106 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:05:26,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26 WrapperNode [2021-10-28 23:05:26,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:26,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:26,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:05:26,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:05:26,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:26,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:05:26,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:05:26,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:05:26,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:05:26,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:05:26,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:05:26,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:05:26,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (1/1) ... [2021-10-28 23:05:26,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:05:26,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:26,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:26,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:05:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:05:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2021-10-28 23:05:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2021-10-28 23:05:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:05:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-28 23:05:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:05:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-10-28 23:05:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-10-28 23:05:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:05:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:05:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:05:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:05:26,406 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:05:27,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:05:27,016 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 23:05:27,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:27 BoogieIcfgContainer [2021-10-28 23:05:27,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:05:27,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:05:27,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:05:27,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:05:27,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:05:25" (1/3) ... [2021-10-28 23:05:27,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce15fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:05:27, skipping insertion in model container [2021-10-28 23:05:27,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:26" (2/3) ... [2021-10-28 23:05:27,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce15fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:05:27, skipping insertion in model container [2021-10-28 23:05:27,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:27" (3/3) ... [2021-10-28 23:05:27,029 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2021-10-28 23:05:27,036 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:05:27,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:05:27,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-28 23:05:27,037 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:05:27,084 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,084 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,085 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,085 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,085 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,085 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,086 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,086 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,086 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,087 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,087 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,087 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,088 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,088 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,088 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,089 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,089 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,089 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,090 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,090 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,090 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,091 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,091 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,091 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,092 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,092 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,092 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,093 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,093 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,093 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,094 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,094 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,094 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,095 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,095 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,095 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,096 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,096 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,096 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,097 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,097 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,097 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,098 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,098 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,098 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,098 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,099 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,099 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,099 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,100 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,100 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,100 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,101 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,101 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,101 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,102 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,102 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,102 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,103 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,103 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,104 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,104 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,104 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,105 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,105 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,105 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,105 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,106 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,106 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,107 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,107 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,107 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,111 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,112 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,112 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,112 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,113 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,113 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,113 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,114 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,114 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,120 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,120 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,121 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,121 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,121 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,121 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,122 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,122 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,122 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:05:27,130 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 23:05:27,192 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:05:27,203 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:05:27,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 23:05:27,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 144 transitions, 304 flow [2021-10-28 23:05:27,389 INFO L129 PetriNetUnfolder]: 4/142 cut-off events. [2021-10-28 23:05:27,390 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 23:05:27,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 142 events. 4/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2021-10-28 23:05:27,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 144 transitions, 304 flow [2021-10-28 23:05:27,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 124 transitions, 254 flow [2021-10-28 23:05:27,431 INFO L129 PetriNetUnfolder]: 1/81 cut-off events. [2021-10-28 23:05:27,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:05:27,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:27,432 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] [2021-10-28 23:05:27,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:27,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1921021416, now seen corresponding path program 1 times [2021-10-28 23:05:27,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:27,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460826482] [2021-10-28 23:05:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:27,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:28,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:28,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460826482] [2021-10-28 23:05:28,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460826482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:28,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:28,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:05:28,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455060098] [2021-10-28 23:05:28,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:05:28,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:28,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:05:28,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:28,120 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 144 [2021-10-28 23:05:28,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 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 23:05:28,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:28,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 144 [2021-10-28 23:05:28,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:28,582 INFO L129 PetriNetUnfolder]: 89/478 cut-off events. [2021-10-28 23:05:28,583 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:05:28,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 478 events. 89/478 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2342 event pairs, 23 based on Foata normal form. 16/480 useless extension candidates. Maximal degree in co-relation 660. Up to 72 conditions per place. [2021-10-28 23:05:28,595 INFO L132 encePairwiseOnDemand]: 123/144 looper letters, 34 selfloop transitions, 23 changer transitions 5/156 dead transitions. [2021-10-28 23:05:28,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 156 transitions, 442 flow [2021-10-28 23:05:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:05:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:05:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1071 transitions. [2021-10-28 23:05:28,628 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8263888888888888 [2021-10-28 23:05:28,629 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1071 transitions. [2021-10-28 23:05:28,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1071 transitions. [2021-10-28 23:05:28,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:28,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1071 transitions. [2021-10-28 23:05:28,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:28,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:28,669 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:28,672 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 254 flow. Second operand 9 states and 1071 transitions. [2021-10-28 23:05:28,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 156 transitions, 442 flow [2021-10-28 23:05:28,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 156 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:05:28,689 INFO L242 Difference]: Finished difference. Result has 138 places, 135 transitions, 389 flow [2021-10-28 23:05:28,692 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=389, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2021-10-28 23:05:28,693 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 10 predicate places. [2021-10-28 23:05:28,694 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 389 flow [2021-10-28 23:05:28,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 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 23:05:28,695 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:28,695 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:28,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:05:28,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:28,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1276800991, now seen corresponding path program 1 times [2021-10-28 23:05:28,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:28,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445068074] [2021-10-28 23:05:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:28,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:28,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:28,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445068074] [2021-10-28 23:05:28,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445068074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:28,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:28,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:05:28,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503063326] [2021-10-28 23:05:28,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:05:28,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:05:28,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:05:28,964 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 144 [2021-10-28 23:05:28,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:28,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:28,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 144 [2021-10-28 23:05:28,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:29,912 INFO L129 PetriNetUnfolder]: 435/2547 cut-off events. [2021-10-28 23:05:29,912 INFO L130 PetriNetUnfolder]: For 208/210 co-relation queries the response was YES. [2021-10-28 23:05:29,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 2547 events. 435/2547 cut-off events. For 208/210 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 22481 event pairs, 66 based on Foata normal form. 284/2810 useless extension candidates. Maximal degree in co-relation 4257. Up to 332 conditions per place. [2021-10-28 23:05:29,946 INFO L132 encePairwiseOnDemand]: 122/144 looper letters, 35 selfloop transitions, 47 changer transitions 0/183 dead transitions. [2021-10-28 23:05:29,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 183 transitions, 649 flow [2021-10-28 23:05:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:05:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:05:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2021-10-28 23:05:29,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2021-10-28 23:05:29,952 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2021-10-28 23:05:29,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2021-10-28 23:05:29,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:29,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2021-10-28 23:05:29,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:29,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:29,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:29,963 INFO L186 Difference]: Start difference. First operand has 138 places, 135 transitions, 389 flow. Second operand 7 states and 800 transitions. [2021-10-28 23:05:29,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 183 transitions, 649 flow [2021-10-28 23:05:29,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 183 transitions, 632 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-10-28 23:05:29,998 INFO L242 Difference]: Finished difference. Result has 144 places, 170 transitions, 612 flow [2021-10-28 23:05:29,998 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=612, PETRI_PLACES=144, PETRI_TRANSITIONS=170} [2021-10-28 23:05:30,001 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 16 predicate places. [2021-10-28 23:05:30,002 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 170 transitions, 612 flow [2021-10-28 23:05:30,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:30,003 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:30,003 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] [2021-10-28 23:05:30,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:05:30,004 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1516957274, now seen corresponding path program 1 times [2021-10-28 23:05:30,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:30,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523455445] [2021-10-28 23:05:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:30,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:30,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:30,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523455445] [2021-10-28 23:05:30,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523455445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:30,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:30,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:05:30,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87596990] [2021-10-28 23:05:30,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:05:30,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:05:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:30,250 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 144 [2021-10-28 23:05:30,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 170 transitions, 612 flow. Second operand has 8 states, 8 states have (on average 109.5) internal successors, (876), 8 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:30,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:30,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 144 [2021-10-28 23:05:30,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:31,558 INFO L129 PetriNetUnfolder]: 560/2906 cut-off events. [2021-10-28 23:05:31,559 INFO L130 PetriNetUnfolder]: For 654/658 co-relation queries the response was YES. [2021-10-28 23:05:31,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 2906 events. 560/2906 cut-off events. For 654/658 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 25602 event pairs, 52 based on Foata normal form. 52/2930 useless extension candidates. Maximal degree in co-relation 6053. Up to 359 conditions per place. [2021-10-28 23:05:31,590 INFO L132 encePairwiseOnDemand]: 121/144 looper letters, 89 selfloop transitions, 103 changer transitions 7/325 dead transitions. [2021-10-28 23:05:31,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 325 transitions, 1618 flow [2021-10-28 23:05:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 23:05:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-28 23:05:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2992 transitions. [2021-10-28 23:05:31,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-10-28 23:05:31,605 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2992 transitions. [2021-10-28 23:05:31,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2992 transitions. [2021-10-28 23:05:31,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:31,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2992 transitions. [2021-10-28 23:05:31,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 115.07692307692308) internal successors, (2992), 26 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:31,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 144.0) internal successors, (3888), 27 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:31,643 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 144.0) internal successors, (3888), 27 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:31,644 INFO L186 Difference]: Start difference. First operand has 144 places, 170 transitions, 612 flow. Second operand 26 states and 2992 transitions. [2021-10-28 23:05:31,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 325 transitions, 1618 flow [2021-10-28 23:05:31,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 325 transitions, 1615 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:05:31,674 INFO L242 Difference]: Finished difference. Result has 175 places, 251 transitions, 1313 flow [2021-10-28 23:05:31,675 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1313, PETRI_PLACES=175, PETRI_TRANSITIONS=251} [2021-10-28 23:05:31,676 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 47 predicate places. [2021-10-28 23:05:31,676 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 251 transitions, 1313 flow [2021-10-28 23:05:31,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.5) internal successors, (876), 8 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:31,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:31,678 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] [2021-10-28 23:05:31,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:05:31,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:31,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:31,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1480327386, now seen corresponding path program 1 times [2021-10-28 23:05:31,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:31,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817159902] [2021-10-28 23:05:31,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:31,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:31,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:31,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817159902] [2021-10-28 23:05:31,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817159902] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:31,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:31,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:05:31,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113120919] [2021-10-28 23:05:31,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:05:31,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:31,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:05:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:31,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 144 [2021-10-28 23:05:31,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 251 transitions, 1313 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:31,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:31,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 144 [2021-10-28 23:05:31,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:32,883 INFO L129 PetriNetUnfolder]: 618/3253 cut-off events. [2021-10-28 23:05:32,884 INFO L130 PetriNetUnfolder]: For 2218/2274 co-relation queries the response was YES. [2021-10-28 23:05:32,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7825 conditions, 3253 events. 618/3253 cut-off events. For 2218/2274 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 30282 event pairs, 61 based on Foata normal form. 9/3233 useless extension candidates. Maximal degree in co-relation 7765. Up to 407 conditions per place. [2021-10-28 23:05:32,922 INFO L132 encePairwiseOnDemand]: 132/144 looper letters, 71 selfloop transitions, 64 changer transitions 10/292 dead transitions. [2021-10-28 23:05:32,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 292 transitions, 1841 flow [2021-10-28 23:05:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:05:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:05:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2021-10-28 23:05:32,928 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8155864197530864 [2021-10-28 23:05:32,928 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2021-10-28 23:05:32,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2021-10-28 23:05:32,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:32,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2021-10-28 23:05:32,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:32,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:32,940 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:32,940 INFO L186 Difference]: Start difference. First operand has 175 places, 251 transitions, 1313 flow. Second operand 9 states and 1057 transitions. [2021-10-28 23:05:32,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 292 transitions, 1841 flow [2021-10-28 23:05:32,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 292 transitions, 1786 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-10-28 23:05:32,996 INFO L242 Difference]: Finished difference. Result has 184 places, 266 transitions, 1578 flow [2021-10-28 23:05:32,997 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1578, PETRI_PLACES=184, PETRI_TRANSITIONS=266} [2021-10-28 23:05:32,997 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 56 predicate places. [2021-10-28 23:05:32,997 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 266 transitions, 1578 flow [2021-10-28 23:05:32,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:32,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:32,999 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] [2021-10-28 23:05:32,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:05:32,999 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:33,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:33,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1493650275, now seen corresponding path program 1 times [2021-10-28 23:05:33,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:33,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894202341] [2021-10-28 23:05:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:33,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:33,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:33,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894202341] [2021-10-28 23:05:33,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894202341] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:33,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:33,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:05:33,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771591894] [2021-10-28 23:05:33,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:05:33,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:33,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:05:33,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:33,400 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 144 [2021-10-28 23:05:33,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 266 transitions, 1578 flow. Second operand has 8 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:33,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:33,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 144 [2021-10-28 23:05:33,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:34,439 INFO L129 PetriNetUnfolder]: 364/2328 cut-off events. [2021-10-28 23:05:34,440 INFO L130 PetriNetUnfolder]: For 2106/2223 co-relation queries the response was YES. [2021-10-28 23:05:34,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6010 conditions, 2328 events. 364/2328 cut-off events. For 2106/2223 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 19897 event pairs, 43 based on Foata normal form. 135/2459 useless extension candidates. Maximal degree in co-relation 5921. Up to 406 conditions per place. [2021-10-28 23:05:34,472 INFO L132 encePairwiseOnDemand]: 121/144 looper letters, 44 selfloop transitions, 69 changer transitions 5/245 dead transitions. [2021-10-28 23:05:34,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 245 transitions, 1480 flow [2021-10-28 23:05:34,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:05:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:05:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 791 transitions. [2021-10-28 23:05:34,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6866319444444444 [2021-10-28 23:05:34,478 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 791 transitions. [2021-10-28 23:05:34,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 791 transitions. [2021-10-28 23:05:34,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:34,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 791 transitions. [2021-10-28 23:05:34,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.875) internal successors, (791), 8 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:34,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:34,493 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:34,493 INFO L186 Difference]: Start difference. First operand has 184 places, 266 transitions, 1578 flow. Second operand 8 states and 791 transitions. [2021-10-28 23:05:34,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 245 transitions, 1480 flow [2021-10-28 23:05:34,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 245 transitions, 1451 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-10-28 23:05:34,532 INFO L242 Difference]: Finished difference. Result has 180 places, 229 transitions, 1358 flow [2021-10-28 23:05:34,533 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1358, PETRI_PLACES=180, PETRI_TRANSITIONS=229} [2021-10-28 23:05:34,533 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 52 predicate places. [2021-10-28 23:05:34,537 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 229 transitions, 1358 flow [2021-10-28 23:05:34,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:34,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:34,538 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] [2021-10-28 23:05:34,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:05:34,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1501200728, now seen corresponding path program 1 times [2021-10-28 23:05:34,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:34,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602690565] [2021-10-28 23:05:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:34,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:34,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:34,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602690565] [2021-10-28 23:05:34,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602690565] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:34,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:34,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:05:34,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090504382] [2021-10-28 23:05:34,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:05:34,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:34,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:05:34,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:05:34,869 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 144 [2021-10-28 23:05:34,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 229 transitions, 1358 flow. Second operand has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:34,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:34,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 144 [2021-10-28 23:05:34,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:35,304 INFO L129 PetriNetUnfolder]: 128/930 cut-off events. [2021-10-28 23:05:35,304 INFO L130 PetriNetUnfolder]: For 1683/1817 co-relation queries the response was YES. [2021-10-28 23:05:35,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2876 conditions, 930 events. 128/930 cut-off events. For 1683/1817 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5822 event pairs, 37 based on Foata normal form. 99/1022 useless extension candidates. Maximal degree in co-relation 2856. Up to 353 conditions per place. [2021-10-28 23:05:35,316 INFO L132 encePairwiseOnDemand]: 138/144 looper letters, 60 selfloop transitions, 10 changer transitions 20/168 dead transitions. [2021-10-28 23:05:35,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 168 transitions, 1094 flow [2021-10-28 23:05:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:05:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 23:05:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2021-10-28 23:05:35,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6655092592592593 [2021-10-28 23:05:35,320 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2021-10-28 23:05:35,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2021-10-28 23:05:35,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:35,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2021-10-28 23:05:35,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,328 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,328 INFO L186 Difference]: Start difference. First operand has 180 places, 229 transitions, 1358 flow. Second operand 6 states and 575 transitions. [2021-10-28 23:05:35,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 168 transitions, 1094 flow [2021-10-28 23:05:35,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 168 transitions, 944 flow, removed 15 selfloop flow, removed 16 redundant places. [2021-10-28 23:05:35,346 INFO L242 Difference]: Finished difference. Result has 149 places, 145 transitions, 649 flow [2021-10-28 23:05:35,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=649, PETRI_PLACES=149, PETRI_TRANSITIONS=145} [2021-10-28 23:05:35,347 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 21 predicate places. [2021-10-28 23:05:35,348 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 145 transitions, 649 flow [2021-10-28 23:05:35,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,349 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:35,349 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] [2021-10-28 23:05:35,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:05:35,354 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash -653230832, now seen corresponding path program 1 times [2021-10-28 23:05:35,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:35,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253630247] [2021-10-28 23:05:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:35,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:35,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:35,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253630247] [2021-10-28 23:05:35,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253630247] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:35,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:35,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:05:35,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541986809] [2021-10-28 23:05:35,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:05:35,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:05:35,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:35,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 144 [2021-10-28 23:05:35,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 145 transitions, 649 flow. Second operand has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:35,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 144 [2021-10-28 23:05:35,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:35,807 INFO L129 PetriNetUnfolder]: 86/776 cut-off events. [2021-10-28 23:05:35,808 INFO L130 PetriNetUnfolder]: For 763/789 co-relation queries the response was YES. [2021-10-28 23:05:35,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 776 events. 86/776 cut-off events. For 763/789 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4636 event pairs, 5 based on Foata normal form. 32/804 useless extension candidates. Maximal degree in co-relation 2009. Up to 161 conditions per place. [2021-10-28 23:05:35,817 INFO L132 encePairwiseOnDemand]: 138/144 looper letters, 80 selfloop transitions, 9 changer transitions 2/172 dead transitions. [2021-10-28 23:05:35,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 172 transitions, 1018 flow [2021-10-28 23:05:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:05:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 23:05:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2021-10-28 23:05:35,821 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2021-10-28 23:05:35,821 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2021-10-28 23:05:35,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2021-10-28 23:05:35,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:35,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2021-10-28 23:05:35,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,828 INFO L186 Difference]: Start difference. First operand has 149 places, 145 transitions, 649 flow. Second operand 5 states and 516 transitions. [2021-10-28 23:05:35,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 172 transitions, 1018 flow [2021-10-28 23:05:35,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 172 transitions, 975 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-10-28 23:05:35,842 INFO L242 Difference]: Finished difference. Result has 139 places, 147 transitions, 656 flow [2021-10-28 23:05:35,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=656, PETRI_PLACES=139, PETRI_TRANSITIONS=147} [2021-10-28 23:05:35,843 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 11 predicate places. [2021-10-28 23:05:35,843 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 147 transitions, 656 flow [2021-10-28 23:05:35,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:35,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:35,844 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:35,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:05:35,845 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1724507654, now seen corresponding path program 1 times [2021-10-28 23:05:35,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:35,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104060228] [2021-10-28 23:05:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:35,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:36,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:36,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104060228] [2021-10-28 23:05:36,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104060228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:36,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:36,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:05:36,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738401430] [2021-10-28 23:05:36,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:05:36,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:05:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:36,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 144 [2021-10-28 23:05:36,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 147 transitions, 656 flow. Second operand has 8 states, 8 states have (on average 110.5) internal successors, (884), 8 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:36,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:36,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 144 [2021-10-28 23:05:36,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:36,546 INFO L129 PetriNetUnfolder]: 140/902 cut-off events. [2021-10-28 23:05:36,546 INFO L130 PetriNetUnfolder]: For 528/532 co-relation queries the response was YES. [2021-10-28 23:05:36,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 902 events. 140/902 cut-off events. For 528/532 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5400 event pairs, 2 based on Foata normal form. 8/909 useless extension candidates. Maximal degree in co-relation 2348. Up to 129 conditions per place. [2021-10-28 23:05:36,555 INFO L132 encePairwiseOnDemand]: 129/144 looper letters, 39 selfloop transitions, 35 changer transitions 57/223 dead transitions. [2021-10-28 23:05:36,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 223 transitions, 1221 flow [2021-10-28 23:05:36,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:05:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:05:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2041 transitions. [2021-10-28 23:05:36,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7874228395061729 [2021-10-28 23:05:36,566 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2041 transitions. [2021-10-28 23:05:36,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2041 transitions. [2021-10-28 23:05:36,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:36,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2041 transitions. [2021-10-28 23:05:36,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 113.38888888888889) internal successors, (2041), 18 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:36,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:36,589 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:36,589 INFO L186 Difference]: Start difference. First operand has 139 places, 147 transitions, 656 flow. Second operand 18 states and 2041 transitions. [2021-10-28 23:05:36,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 223 transitions, 1221 flow [2021-10-28 23:05:36,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 223 transitions, 1218 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:05:36,603 INFO L242 Difference]: Finished difference. Result has 160 places, 136 transitions, 646 flow [2021-10-28 23:05:36,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=646, PETRI_PLACES=160, PETRI_TRANSITIONS=136} [2021-10-28 23:05:36,604 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 32 predicate places. [2021-10-28 23:05:36,604 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 136 transitions, 646 flow [2021-10-28 23:05:36,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.5) internal successors, (884), 8 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:36,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:36,606 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:36,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:05:36,607 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1732736097, now seen corresponding path program 1 times [2021-10-28 23:05:36,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:36,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298003042] [2021-10-28 23:05:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:36,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:36,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:36,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298003042] [2021-10-28 23:05:36,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298003042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:36,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:36,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:05:36,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074678954] [2021-10-28 23:05:36,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:05:36,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:05:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:05:36,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 144 [2021-10-28 23:05:36,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 136 transitions, 646 flow. Second operand has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:36,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:36,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 144 [2021-10-28 23:05:36,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:37,026 INFO L129 PetriNetUnfolder]: 27/334 cut-off events. [2021-10-28 23:05:37,026 INFO L130 PetriNetUnfolder]: For 313/323 co-relation queries the response was YES. [2021-10-28 23:05:37,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 334 events. 27/334 cut-off events. For 313/323 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1197 event pairs, 9 based on Foata normal form. 6/338 useless extension candidates. Maximal degree in co-relation 856. Up to 64 conditions per place. [2021-10-28 23:05:37,030 INFO L132 encePairwiseOnDemand]: 127/144 looper letters, 19 selfloop transitions, 19 changer transitions 13/124 dead transitions. [2021-10-28 23:05:37,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 124 transitions, 607 flow [2021-10-28 23:05:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:05:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 23:05:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 639 transitions. [2021-10-28 23:05:37,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2021-10-28 23:05:37,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 639 transitions. [2021-10-28 23:05:37,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 639 transitions. [2021-10-28 23:05:37,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:37,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 639 transitions. [2021-10-28 23:05:37,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,043 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,043 INFO L186 Difference]: Start difference. First operand has 160 places, 136 transitions, 646 flow. Second operand 6 states and 639 transitions. [2021-10-28 23:05:37,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 124 transitions, 607 flow [2021-10-28 23:05:37,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 124 transitions, 468 flow, removed 8 selfloop flow, removed 22 redundant places. [2021-10-28 23:05:37,051 INFO L242 Difference]: Finished difference. Result has 137 places, 109 transitions, 380 flow [2021-10-28 23:05:37,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=380, PETRI_PLACES=137, PETRI_TRANSITIONS=109} [2021-10-28 23:05:37,052 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 9 predicate places. [2021-10-28 23:05:37,052 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 109 transitions, 380 flow [2021-10-28 23:05:37,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:05:37,053 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:37,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:05:37,054 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:05:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:37,055 INFO L85 PathProgramCache]: Analyzing trace with hash 847352650, now seen corresponding path program 1 times [2021-10-28 23:05:37,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:37,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323103805] [2021-10-28 23:05:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:37,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:37,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:37,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323103805] [2021-10-28 23:05:37,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323103805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:37,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:37,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:05:37,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612593265] [2021-10-28 23:05:37,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:05:37,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:05:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:37,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 144 [2021-10-28 23:05:37,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 109 transitions, 380 flow. Second operand has 8 states, 8 states have (on average 91.875) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:05:37,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 144 [2021-10-28 23:05:37,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:05:37,586 INFO L129 PetriNetUnfolder]: 19/183 cut-off events. [2021-10-28 23:05:37,586 INFO L130 PetriNetUnfolder]: For 175/189 co-relation queries the response was YES. [2021-10-28 23:05:37,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 183 events. 19/183 cut-off events. For 175/189 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 474 event pairs, 0 based on Foata normal form. 3/184 useless extension candidates. Maximal degree in co-relation 420. Up to 53 conditions per place. [2021-10-28 23:05:37,588 INFO L132 encePairwiseOnDemand]: 139/144 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2021-10-28 23:05:37,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 98 transitions, 451 flow [2021-10-28 23:05:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:05:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 23:05:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2021-10-28 23:05:37,591 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6539351851851852 [2021-10-28 23:05:37,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2021-10-28 23:05:37,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2021-10-28 23:05:37,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:37,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2021-10-28 23:05:37,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,600 INFO L186 Difference]: Start difference. First operand has 137 places, 109 transitions, 380 flow. Second operand 6 states and 565 transitions. [2021-10-28 23:05:37,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 98 transitions, 451 flow [2021-10-28 23:05:37,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 98 transitions, 435 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-10-28 23:05:37,605 INFO L242 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-10-28 23:05:37,605 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-10-28 23:05:37,606 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, -20 predicate places. [2021-10-28 23:05:37,606 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-10-28 23:05:37,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.875) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:37,610 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:05:37,611 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:05:37,611 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:05:37,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:05:37,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:05:37,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:05:37,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:05:37,617 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:37,620 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:05:37,620 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:05:37,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:05:37 BasicIcfg [2021-10-28 23:05:37,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:05:37,625 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:05:37,625 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:05:37,625 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:05:37,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:27" (3/4) ... [2021-10-28 23:05:37,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:05:37,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2021-10-28 23:05:37,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-10-28 23:05:37,646 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-28 23:05:37,647 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:05:37,647 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:05:37,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:05:37,697 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:05:37,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:05:37,700 INFO L168 Benchmark]: Toolchain (without parser) took 12257.42 ms. Allocated memory was 102.8 MB in the beginning and 371.2 MB in the end (delta: 268.4 MB). Free memory was 72.7 MB in the beginning and 132.1 MB in the end (delta: -59.4 MB). Peak memory consumption was 208.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:37,700 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:05:37,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.64 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 72.4 MB in the beginning and 90.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:37,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.29 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 87.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:37,702 INFO L168 Benchmark]: Boogie Preprocessor took 64.53 ms. Allocated memory is still 125.8 MB. Free memory was 87.8 MB in the beginning and 86.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:05:37,703 INFO L168 Benchmark]: RCFGBuilder took 745.61 ms. Allocated memory is still 125.8 MB. Free memory was 86.3 MB in the beginning and 71.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:37,703 INFO L168 Benchmark]: TraceAbstraction took 10603.40 ms. Allocated memory was 125.8 MB in the beginning and 371.2 MB in the end (delta: 245.4 MB). Free memory was 71.0 MB in the beginning and 135.2 MB in the end (delta: -64.2 MB). Peak memory consumption was 181.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:37,704 INFO L168 Benchmark]: Witness Printer took 73.22 ms. Allocated memory is still 371.2 MB. Free memory was 135.2 MB in the beginning and 132.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:37,707 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 655.64 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 72.4 MB in the beginning and 90.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.29 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 87.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.53 ms. Allocated memory is still 125.8 MB. Free memory was 87.8 MB in the beginning and 86.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 745.61 ms. Allocated memory is still 125.8 MB. Free memory was 86.3 MB in the beginning and 71.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10603.40 ms. Allocated memory was 125.8 MB in the beginning and 371.2 MB in the end (delta: 245.4 MB). Free memory was 71.0 MB in the beginning and 135.2 MB in the end (delta: -64.2 MB). Peak memory consumption was 181.7 MB. Max. memory is 16.1 GB. * Witness Printer took 73.22 ms. Allocated memory is still 371.2 MB. Free memory was 135.2 MB in the beginning and 132.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 181 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: 10.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 631 SDslu, 574 SDs, 0 SdLazy, 1203 SolverSat, 440 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 25 SyntacticMatches, 24 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1578occurred in iteration=4, InterpolantAutomatonStates: 100, 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, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 5310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:05:37,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80be391f-806a-45e3-8a39-225cca758802/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...