./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe021_tso.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_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe021_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:49:08,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:49:08,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:49:08,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:49:08,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:49:08,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:49:08,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:49:08,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:49:08,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:49:08,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:49:08,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:49:08,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:49:08,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:49:08,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:49:08,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:49:08,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:49:08,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:49:08,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:49:08,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:49:08,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:49:08,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:49:08,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:49:08,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:49:08,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:49:08,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:49:08,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:49:08,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:49:08,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:49:08,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:49:08,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:49:08,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:49:08,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:49:08,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:49:08,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:49:08,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:49:08,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:49:08,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:49:08,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:49:08,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:49:08,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:49:08,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:49:08,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:49:08,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:49:08,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:49:08,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:49:08,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:49:08,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:49:08,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:49:08,527 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:49:08,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:49:08,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:49:08,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:49:08,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:49:08,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:49:08,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:49:08,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:49:08,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:49:08,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:49:08,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:49:08,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:49:08,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:49:08,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:49:08,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:49:08,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:49:08,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:49:08,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:49:08,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:49:08,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:49:08,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:49:08,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:49:08,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:49:08,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:49:08,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:49:08,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:49:08,543 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_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 [2021-10-28 09:49:08,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:49:08,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:49:08,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:49:08,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:49:08,899 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:49:08,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe021_tso.i [2021-10-28 09:49:08,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/data/df19464a3/af13c9d7082b4008b4e95a9b60554f01/FLAG009572cc0 [2021-10-28 09:49:09,624 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:49:09,625 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/sv-benchmarks/c/pthread-wmm/safe021_tso.i [2021-10-28 09:49:09,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/data/df19464a3/af13c9d7082b4008b4e95a9b60554f01/FLAG009572cc0 [2021-10-28 09:49:09,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/data/df19464a3/af13c9d7082b4008b4e95a9b60554f01 [2021-10-28 09:49:09,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:49:09,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:49:09,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:49:09,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:49:09,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:49:09,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:49:09" (1/1) ... [2021-10-28 09:49:09,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7435bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:09, skipping insertion in model container [2021-10-28 09:49:09,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:49:09" (1/1) ... [2021-10-28 09:49:09,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:49:10,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:49:10,193 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_11fabb93-fad7-46bf-a379-e4823d6be687/sv-benchmarks/c/pthread-wmm/safe021_tso.i[945,958] [2021-10-28 09:49:10,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:49:10,396 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:49:10,411 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_11fabb93-fad7-46bf-a379-e4823d6be687/sv-benchmarks/c/pthread-wmm/safe021_tso.i[945,958] [2021-10-28 09:49:10,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:49:10,499 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:49:10,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10 WrapperNode [2021-10-28 09:49:10,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:49:10,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:49:10,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:49:10,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:49:10,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:49:10,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:49:10,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:49:10,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:49:10,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:49:10,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:49:10,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:49:10,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:49:10,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (1/1) ... [2021-10-28 09:49:10,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:49:10,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:49:10,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:49:10,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:49:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:49:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:49:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:49:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:49:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 09:49:10,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 09:49:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 09:49:10,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 09:49:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 09:49:10,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 09:49:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:49:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:49:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:49:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:49:10,754 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:49:11,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:49:11,124 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:49:11,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:11 BoogieIcfgContainer [2021-10-28 09:49:11,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:49:11,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:49:11,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:49:11,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:49:11,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:49:09" (1/3) ... [2021-10-28 09:49:11,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf87d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:49:11, skipping insertion in model container [2021-10-28 09:49:11,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:10" (2/3) ... [2021-10-28 09:49:11,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf87d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:49:11, skipping insertion in model container [2021-10-28 09:49:11,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:11" (3/3) ... [2021-10-28 09:49:11,138 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2021-10-28 09:49:11,144 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:49:11,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:49:11,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:49:11,145 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:49:11,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,192 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,192 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,197 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,197 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,198 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,203 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,205 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,209 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:49:11,228 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 09:49:11,295 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:49:11,303 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:49:11,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:49:11,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-28 09:49:11,424 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-28 09:49:11,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:49:11,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-28 09:49:11,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-10-28 09:49:11,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-10-28 09:49:11,501 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-10-28 09:49:11,502 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:49:11,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:49:11,503 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:11,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:49:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:11,514 INFO L85 PathProgramCache]: Analyzing trace with hash -927759384, now seen corresponding path program 1 times [2021-10-28 09:49:11,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:11,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733831131] [2021-10-28 09:49:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:11,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:12,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:12,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733831131] [2021-10-28 09:49:12,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733831131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:12,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:12,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:49:12,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205702456] [2021-10-28 09:49:12,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:49:12,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:49:12,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:49:12,198 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 84 [2021-10-28 09:49:12,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:12,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:49:12,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 84 [2021-10-28 09:49:12,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:49:12,486 INFO L129 PetriNetUnfolder]: 24/148 cut-off events. [2021-10-28 09:49:12,486 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:49:12,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 148 events. 24/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 449 event pairs, 5 based on Foata normal form. 6/151 useless extension candidates. Maximal degree in co-relation 188. Up to 31 conditions per place. [2021-10-28 09:49:12,491 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 8 selfloop transitions, 3 changer transitions 19/89 dead transitions. [2021-10-28 09:49:12,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 247 flow [2021-10-28 09:49:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:49:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:49:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 673 transitions. [2021-10-28 09:49:12,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8902116402116402 [2021-10-28 09:49:12,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 673 transitions. [2021-10-28 09:49:12,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 673 transitions. [2021-10-28 09:49:12,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:49:12,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 673 transitions. [2021-10-28 09:49:12,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.77777777777777) internal successors, (673), 9 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:12,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:12,563 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:12,565 INFO L186 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 673 transitions. [2021-10-28 09:49:12,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 247 flow [2021-10-28 09:49:12,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:49:12,575 INFO L242 Difference]: Finished difference. Result has 90 places, 70 transitions, 185 flow [2021-10-28 09:49:12,577 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=185, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2021-10-28 09:49:12,578 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-10-28 09:49:12,579 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 185 flow [2021-10-28 09:49:12,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:12,580 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:49:12,580 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] [2021-10-28 09:49:12,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:49:12,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:49:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1333723479, now seen corresponding path program 1 times [2021-10-28 09:49:12,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:12,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800125104] [2021-10-28 09:49:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:12,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:12,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:12,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800125104] [2021-10-28 09:49:12,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800125104] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:12,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:12,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:49:12,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021885344] [2021-10-28 09:49:12,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:49:12,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:49:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:49:12,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-10-28 09:49:12,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:12,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:49:12,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-10-28 09:49:12,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:49:13,112 INFO L129 PetriNetUnfolder]: 28/164 cut-off events. [2021-10-28 09:49:13,113 INFO L130 PetriNetUnfolder]: For 170/171 co-relation queries the response was YES. [2021-10-28 09:49:13,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 164 events. 28/164 cut-off events. For 170/171 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 507 event pairs, 9 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 330. Up to 31 conditions per place. [2021-10-28 09:49:13,123 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 6 selfloop transitions, 2 changer transitions 10/80 dead transitions. [2021-10-28 09:49:13,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 80 transitions, 259 flow [2021-10-28 09:49:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:49:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:49:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 668 transitions. [2021-10-28 09:49:13,137 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8835978835978836 [2021-10-28 09:49:13,138 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 668 transitions. [2021-10-28 09:49:13,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 668 transitions. [2021-10-28 09:49:13,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:49:13,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 668 transitions. [2021-10-28 09:49:13,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,149 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,149 INFO L186 Difference]: Start difference. First operand has 90 places, 70 transitions, 185 flow. Second operand 9 states and 668 transitions. [2021-10-28 09:49:13,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 80 transitions, 259 flow [2021-10-28 09:49:13,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 242 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-10-28 09:49:13,156 INFO L242 Difference]: Finished difference. Result has 95 places, 70 transitions, 196 flow [2021-10-28 09:49:13,157 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=95, PETRI_TRANSITIONS=70} [2021-10-28 09:49:13,157 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2021-10-28 09:49:13,158 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 70 transitions, 196 flow [2021-10-28 09:49:13,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,158 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:49:13,159 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] [2021-10-28 09:49:13,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:49:13,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:49:13,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:13,160 INFO L85 PathProgramCache]: Analyzing trace with hash 462902890, now seen corresponding path program 1 times [2021-10-28 09:49:13,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:13,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956812233] [2021-10-28 09:49:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:13,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:13,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:13,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956812233] [2021-10-28 09:49:13,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956812233] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:13,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:13,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:49:13,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463205024] [2021-10-28 09:49:13,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:49:13,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:13,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:49:13,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:49:13,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 09:49:13,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 70 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:49:13,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 09:49:13,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:49:13,743 INFO L129 PetriNetUnfolder]: 101/351 cut-off events. [2021-10-28 09:49:13,743 INFO L130 PetriNetUnfolder]: For 580/662 co-relation queries the response was YES. [2021-10-28 09:49:13,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 351 events. 101/351 cut-off events. For 580/662 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1644 event pairs, 16 based on Foata normal form. 13/353 useless extension candidates. Maximal degree in co-relation 901. Up to 68 conditions per place. [2021-10-28 09:49:13,749 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 18 selfloop transitions, 6 changer transitions 39/116 dead transitions. [2021-10-28 09:49:13,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 116 transitions, 583 flow [2021-10-28 09:49:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:49:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:49:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1170 transitions. [2021-10-28 09:49:13,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819327731092437 [2021-10-28 09:49:13,756 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1170 transitions. [2021-10-28 09:49:13,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1170 transitions. [2021-10-28 09:49:13,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:49:13,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1170 transitions. [2021-10-28 09:49:13,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 68.82352941176471) internal successors, (1170), 17 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,769 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,770 INFO L186 Difference]: Start difference. First operand has 95 places, 70 transitions, 196 flow. Second operand 17 states and 1170 transitions. [2021-10-28 09:49:13,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 116 transitions, 583 flow [2021-10-28 09:49:13,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 116 transitions, 513 flow, removed 32 selfloop flow, removed 8 redundant places. [2021-10-28 09:49:13,781 INFO L242 Difference]: Finished difference. Result has 113 places, 72 transitions, 254 flow [2021-10-28 09:49:13,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=254, PETRI_PLACES=113, PETRI_TRANSITIONS=72} [2021-10-28 09:49:13,782 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2021-10-28 09:49:13,782 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 72 transitions, 254 flow [2021-10-28 09:49:13,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:49:13,783 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] [2021-10-28 09:49:13,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:49:13,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:49:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash 160810386, now seen corresponding path program 1 times [2021-10-28 09:49:13,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:13,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618178833] [2021-10-28 09:49:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:13,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:13,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:13,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618178833] [2021-10-28 09:49:13,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618178833] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:13,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:13,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:49:13,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035518569] [2021-10-28 09:49:13,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:49:13,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:49:13,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:49:13,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 09:49:13,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 72 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:13,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:49:13,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 09:49:13,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:49:14,217 INFO L129 PetriNetUnfolder]: 287/737 cut-off events. [2021-10-28 09:49:14,217 INFO L130 PetriNetUnfolder]: For 1070/1080 co-relation queries the response was YES. [2021-10-28 09:49:14,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 737 events. 287/737 cut-off events. For 1070/1080 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4903 event pairs, 32 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 1720. Up to 191 conditions per place. [2021-10-28 09:49:14,230 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 21 selfloop transitions, 15 changer transitions 5/102 dead transitions. [2021-10-28 09:49:14,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 396 flow [2021-10-28 09:49:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:49:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:49:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-10-28 09:49:14,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-10-28 09:49:14,235 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-10-28 09:49:14,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-10-28 09:49:14,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:49:14,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-10-28 09:49:14,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,243 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,243 INFO L186 Difference]: Start difference. First operand has 113 places, 72 transitions, 254 flow. Second operand 10 states and 743 transitions. [2021-10-28 09:49:14,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 396 flow [2021-10-28 09:49:14,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 362 flow, removed 13 selfloop flow, removed 12 redundant places. [2021-10-28 09:49:14,255 INFO L242 Difference]: Finished difference. Result has 104 places, 85 transitions, 329 flow [2021-10-28 09:49:14,255 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=329, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2021-10-28 09:49:14,255 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 26 predicate places. [2021-10-28 09:49:14,256 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 329 flow [2021-10-28 09:49:14,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:49:14,257 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:14,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:49:14,257 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:49:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 327652299, now seen corresponding path program 1 times [2021-10-28 09:49:14,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:14,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122333513] [2021-10-28 09:49:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:14,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:14,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:14,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122333513] [2021-10-28 09:49:14,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122333513] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:14,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:14,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:49:14,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798297625] [2021-10-28 09:49:14,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:49:14,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:14,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:49:14,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:49:14,396 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 09:49:14,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:49:14,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 09:49:14,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:49:14,724 INFO L129 PetriNetUnfolder]: 259/674 cut-off events. [2021-10-28 09:49:14,724 INFO L130 PetriNetUnfolder]: For 1758/2090 co-relation queries the response was YES. [2021-10-28 09:49:14,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 674 events. 259/674 cut-off events. For 1758/2090 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4486 event pairs, 7 based on Foata normal form. 63/702 useless extension candidates. Maximal degree in co-relation 2340. Up to 278 conditions per place. [2021-10-28 09:49:14,734 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 20 selfloop transitions, 28 changer transitions 11/120 dead transitions. [2021-10-28 09:49:14,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 120 transitions, 671 flow [2021-10-28 09:49:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:49:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:49:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2021-10-28 09:49:14,739 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8836996336996337 [2021-10-28 09:49:14,740 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2021-10-28 09:49:14,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2021-10-28 09:49:14,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:49:14,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2021-10-28 09:49:14,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,750 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,751 INFO L186 Difference]: Start difference. First operand has 104 places, 85 transitions, 329 flow. Second operand 13 states and 965 transitions. [2021-10-28 09:49:14,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 120 transitions, 671 flow [2021-10-28 09:49:14,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 120 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:49:14,763 INFO L242 Difference]: Finished difference. Result has 121 places, 102 transitions, 553 flow [2021-10-28 09:49:14,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=553, PETRI_PLACES=121, PETRI_TRANSITIONS=102} [2021-10-28 09:49:14,763 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 43 predicate places. [2021-10-28 09:49:14,764 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 553 flow [2021-10-28 09:49:14,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:49:14,765 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:14,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:49:14,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:49:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:14,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1779087046, now seen corresponding path program 1 times [2021-10-28 09:49:14,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:14,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202335989] [2021-10-28 09:49:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:14,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:14,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:14,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202335989] [2021-10-28 09:49:14,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202335989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:14,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:14,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:49:14,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505892027] [2021-10-28 09:49:14,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:49:14,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:49:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:49:14,910 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 09:49:14,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 102 transitions, 553 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:14,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:49:14,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 09:49:14,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:49:15,302 INFO L129 PetriNetUnfolder]: 175/558 cut-off events. [2021-10-28 09:49:15,302 INFO L130 PetriNetUnfolder]: For 2871/3549 co-relation queries the response was YES. [2021-10-28 09:49:15,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 558 events. 175/558 cut-off events. For 2871/3549 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3895 event pairs, 0 based on Foata normal form. 81/608 useless extension candidates. Maximal degree in co-relation 2427. Up to 198 conditions per place. [2021-10-28 09:49:15,311 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 16 selfloop transitions, 32 changer transitions 19/128 dead transitions. [2021-10-28 09:49:15,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 869 flow [2021-10-28 09:49:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:49:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:49:15,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1172 transitions. [2021-10-28 09:49:15,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8720238095238095 [2021-10-28 09:49:15,318 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1172 transitions. [2021-10-28 09:49:15,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1172 transitions. [2021-10-28 09:49:15,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:49:15,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1172 transitions. [2021-10-28 09:49:15,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.25) internal successors, (1172), 16 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,330 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,330 INFO L186 Difference]: Start difference. First operand has 121 places, 102 transitions, 553 flow. Second operand 16 states and 1172 transitions. [2021-10-28 09:49:15,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 869 flow [2021-10-28 09:49:15,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 128 transitions, 765 flow, removed 44 selfloop flow, removed 11 redundant places. [2021-10-28 09:49:15,355 INFO L242 Difference]: Finished difference. Result has 132 places, 103 transitions, 563 flow [2021-10-28 09:49:15,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=563, PETRI_PLACES=132, PETRI_TRANSITIONS=103} [2021-10-28 09:49:15,356 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 54 predicate places. [2021-10-28 09:49:15,356 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 103 transitions, 563 flow [2021-10-28 09:49:15,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:49:15,357 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:15,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:49:15,358 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:49:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:15,359 INFO L85 PathProgramCache]: Analyzing trace with hash -966380088, now seen corresponding path program 1 times [2021-10-28 09:49:15,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:15,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339679464] [2021-10-28 09:49:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:15,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:15,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:15,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339679464] [2021-10-28 09:49:15,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339679464] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:15,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:15,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:49:15,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131651320] [2021-10-28 09:49:15,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:49:15,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:49:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:49:15,495 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 09:49:15,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 103 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:49:15,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 09:49:15,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:49:15,681 INFO L129 PetriNetUnfolder]: 118/589 cut-off events. [2021-10-28 09:49:15,682 INFO L130 PetriNetUnfolder]: For 1777/1842 co-relation queries the response was YES. [2021-10-28 09:49:15,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 589 events. 118/589 cut-off events. For 1777/1842 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4787 event pairs, 0 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 1951. Up to 91 conditions per place. [2021-10-28 09:49:15,688 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2021-10-28 09:49:15,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 102 transitions, 585 flow [2021-10-28 09:49:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:49:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:49:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 501 transitions. [2021-10-28 09:49:15,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8520408163265306 [2021-10-28 09:49:15,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 501 transitions. [2021-10-28 09:49:15,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 501 transitions. [2021-10-28 09:49:15,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:49:15,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 501 transitions. [2021-10-28 09:49:15,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,698 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,698 INFO L186 Difference]: Start difference. First operand has 132 places, 103 transitions, 563 flow. Second operand 7 states and 501 transitions. [2021-10-28 09:49:15,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 102 transitions, 585 flow [2021-10-28 09:49:15,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 102 transitions, 486 flow, removed 16 selfloop flow, removed 15 redundant places. [2021-10-28 09:49:15,731 INFO L242 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2021-10-28 09:49:15,731 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2021-10-28 09:49:15,732 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 40 predicate places. [2021-10-28 09:49:15,732 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2021-10-28 09:49:15,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:15,736 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:49:15,736 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:49:15,737 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:49:15,737 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:49:15,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:49:15,741 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:15,744 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:49:15,745 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:49:15,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:49:15 BasicIcfg [2021-10-28 09:49:15,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:49:15,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:49:15,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:49:15,749 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:49:15,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:11" (3/4) ... [2021-10-28 09:49:15,753 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:49:15,760 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 09:49:15,761 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 09:49:15,761 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 09:49:15,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 09:49:15,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:49:15,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:49:15,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:49:15,845 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:49:15,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:49:15,856 INFO L168 Benchmark]: Toolchain (without parser) took 6001.20 ms. Allocated memory was 83.9 MB in the beginning and 138.4 MB in the end (delta: 54.5 MB). Free memory was 39.7 MB in the beginning and 110.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 60.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,857 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 57.2 MB in the beginning and 57.1 MB in the end (delta: 100.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:49:15,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.28 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 39.5 MB in the beginning and 74.9 MB in the end (delta: -35.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.61 ms. Allocated memory is still 115.3 MB. Free memory was 74.9 MB in the beginning and 72.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,859 INFO L168 Benchmark]: Boogie Preprocessor took 56.26 ms. Allocated memory is still 115.3 MB. Free memory was 72.8 MB in the beginning and 71.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,859 INFO L168 Benchmark]: RCFGBuilder took 469.51 ms. Allocated memory is still 115.3 MB. Free memory was 71.2 MB in the beginning and 59.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,861 INFO L168 Benchmark]: TraceAbstraction took 4618.21 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 58.6 MB in the beginning and 35.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,861 INFO L168 Benchmark]: Witness Printer took 106.25 ms. Allocated memory is still 138.4 MB. Free memory was 35.5 MB in the beginning and 110.5 MB in the end (delta: -74.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 57.2 MB in the beginning and 57.1 MB in the end (delta: 100.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 641.28 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 39.5 MB in the beginning and 74.9 MB in the end (delta: -35.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.61 ms. Allocated memory is still 115.3 MB. Free memory was 74.9 MB in the beginning and 72.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.26 ms. Allocated memory is still 115.3 MB. Free memory was 72.8 MB in the beginning and 71.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 469.51 ms. Allocated memory is still 115.3 MB. Free memory was 71.2 MB in the beginning and 59.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4618.21 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 58.6 MB in the beginning and 35.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. * Witness Printer took 106.25 ms. Allocated memory is still 138.4 MB. Free memory was 35.5 MB in the beginning and 110.5 MB in the end (delta: -74.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 18]: 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 7 procedures, 107 locations, 4 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: 4.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 238 SDslu, 229 SDs, 0 SdLazy, 286 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=6, InterpolantAutomatonStates: 81, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 373 ConstructedInterpolants, 0 QuantifiedInterpolants, 1049 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:49:15,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fabb93-fad7-46bf-a379-e4823d6be687/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...