./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_accelerometer_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_accelerometer_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3 --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 f984bd5abbd4adc0ae4b2416fd7142c889297d5b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:16:38,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:16:38,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:16:38,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:16:38,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:16:38,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:16:38,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:16:38,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:16:38,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:16:38,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:16:38,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:16:38,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:16:38,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:16:38,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:16:38,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:16:38,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:16:38,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:16:38,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:16:38,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:16:38,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:16:38,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:16:38,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:16:38,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:16:38,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:16:38,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:16:38,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:16:38,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:16:38,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:16:38,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:16:38,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:16:38,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:16:38,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:16:38,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:16:38,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:16:38,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:16:38,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:16:38,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:16:38,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:16:38,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:16:38,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:16:38,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:16:38,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:16:38,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:16:38,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:16:38,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:16:38,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:16:38,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:16:38,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:16:38,510 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:16:38,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:16:38,510 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:16:38,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:16:38,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:16:38,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:16:38,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:16:38,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:16:38,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:16:38,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:16:38,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:16:38,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:16:38,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:16:38,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:16:38,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:16:38,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:16:38,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:38,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:16:38,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:16:38,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:16:38,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:16:38,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:16:38,518 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:16:38,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:16:38,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:16:38,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:16:38,519 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_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f984bd5abbd4adc0ae4b2416fd7142c889297d5b [2021-10-15 20:16:38,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:16:38,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:16:38,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:16:38,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:16:38,973 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:16:38,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/psyco/psyco_accelerometer_1.c [2021-10-15 20:16:39,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/data/23155feff/a41da06805ed42f8b3879f9c256c3825/FLAG6118d239d [2021-10-15 20:16:40,100 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:16:40,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/sv-benchmarks/c/psyco/psyco_accelerometer_1.c [2021-10-15 20:16:40,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/data/23155feff/a41da06805ed42f8b3879f9c256c3825/FLAG6118d239d [2021-10-15 20:16:40,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/data/23155feff/a41da06805ed42f8b3879f9c256c3825 [2021-10-15 20:16:40,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:16:40,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:16:40,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:40,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:16:40,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:16:40,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:40" (1/1) ... [2021-10-15 20:16:40,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f74db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:40, skipping insertion in model container [2021-10-15 20:16:40,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:40" (1/1) ... [2021-10-15 20:16:40,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:16:40,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:16:41,691 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_ef20e1ef-53a6-48f5-aad3-05033abaed8e/sv-benchmarks/c/psyco/psyco_accelerometer_1.c[182833,182846] [2021-10-15 20:16:41,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:41,735 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:16:42,126 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_ef20e1ef-53a6-48f5-aad3-05033abaed8e/sv-benchmarks/c/psyco/psyco_accelerometer_1.c[182833,182846] [2021-10-15 20:16:42,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:42,151 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:16:42,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42 WrapperNode [2021-10-15 20:16:42,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:42,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:42,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:16:42,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:16:42,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:42,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:16:42,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:16:42,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:16:42,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:16:42,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:16:42,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:16:42,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:16:42,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (1/1) ... [2021-10-15 20:16:42,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:42,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:16:42,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:16:42,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:16:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:16:42,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:16:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:16:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:16:45,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:16:45,084 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-15 20:16:45,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:45 BoogieIcfgContainer [2021-10-15 20:16:45,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:16:45,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:16:45,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:16:45,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:16:45,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:16:40" (1/3) ... [2021-10-15 20:16:45,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798b55ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:45, skipping insertion in model container [2021-10-15 20:16:45,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:42" (2/3) ... [2021-10-15 20:16:45,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798b55ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:45, skipping insertion in model container [2021-10-15 20:16:45,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:45" (3/3) ... [2021-10-15 20:16:45,102 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_accelerometer_1.c [2021-10-15 20:16:45,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:16:45,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:16:45,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:16:45,198 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, mConcurrency=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 [2021-10-15 20:16:45,199 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:16:45,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 237 places, 465 transitions, 930 flow [2021-10-15 20:16:45,398 INFO L129 PetriNetUnfolder]: 229/465 cut-off events. [2021-10-15 20:16:45,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:45,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 465 events. 229/465 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1056 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 0. Up to 145 conditions per place. [2021-10-15 20:16:45,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 465 transitions, 930 flow [2021-10-15 20:16:45,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 450 transitions, 900 flow [2021-10-15 20:16:45,443 INFO L129 PetriNetUnfolder]: 8/30 cut-off events. [2021-10-15 20:16:45,444 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:45,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:45,445 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:45,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash 352572211, now seen corresponding path program 1 times [2021-10-15 20:16:45,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:45,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400261974] [2021-10-15 20:16:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:45,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:45,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:45,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400261974] [2021-10-15 20:16:45,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400261974] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:45,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:45,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:16:45,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877380536] [2021-10-15 20:16:45,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:16:45,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:45,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:16:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:16:45,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 465 [2021-10-15 20:16:45,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 450 transitions, 900 flow. Second operand has 2 states, 2 states have (on average 414.5) internal successors, (829), 2 states have internal predecessors, (829), 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) [2021-10-15 20:16:45,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:45,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 465 [2021-10-15 20:16:45,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:45,873 INFO L129 PetriNetUnfolder]: 170/393 cut-off events. [2021-10-15 20:16:45,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:45,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 393 events. 170/393 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 971 event pairs, 0 based on Foata normal form. 39/262 useless extension candidates. Maximal degree in co-relation 393. Up to 116 conditions per place. [2021-10-15 20:16:45,885 INFO L132 encePairwiseOnDemand]: 426/465 looper letters, 0 selfloop transitions, 0 changer transitions 0/393 dead transitions. [2021-10-15 20:16:45,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 393 transitions, 786 flow [2021-10-15 20:16:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:16:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:16:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 867 transitions. [2021-10-15 20:16:45,916 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.932258064516129 [2021-10-15 20:16:45,917 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 867 transitions. [2021-10-15 20:16:45,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 867 transitions. [2021-10-15 20:16:45,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:45,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 867 transitions. [2021-10-15 20:16:45,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 433.5) internal successors, (867), 2 states have internal predecessors, (867), 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) [2021-10-15 20:16:45,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 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) [2021-10-15 20:16:45,955 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 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) [2021-10-15 20:16:45,958 INFO L186 Difference]: Start difference. First operand has 233 places, 450 transitions, 900 flow. Second operand 2 states and 867 transitions. [2021-10-15 20:16:45,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 393 transitions, 786 flow [2021-10-15 20:16:45,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 393 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:16:45,978 INFO L242 Difference]: Finished difference. Result has 225 places, 393 transitions, 786 flow [2021-10-15 20:16:45,982 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=786, PETRI_PLACES=225, PETRI_TRANSITIONS=393} [2021-10-15 20:16:45,983 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, -8 predicate places. [2021-10-15 20:16:45,983 INFO L470 AbstractCegarLoop]: Abstraction has has 225 places, 393 transitions, 786 flow [2021-10-15 20:16:45,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 414.5) internal successors, (829), 2 states have internal predecessors, (829), 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) [2021-10-15 20:16:45,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:45,985 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:45,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:16:45,986 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1422696861, now seen corresponding path program 1 times [2021-10-15 20:16:45,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:45,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464456591] [2021-10-15 20:16:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:45,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:46,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:46,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464456591] [2021-10-15 20:16:46,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464456591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:46,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:46,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:46,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955038496] [2021-10-15 20:16:46,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:46,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:46,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:46,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:46,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 465 [2021-10-15 20:16:46,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 393 transitions, 786 flow. Second operand has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 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) [2021-10-15 20:16:46,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:46,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 465 [2021-10-15 20:16:46,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:46,348 INFO L129 PetriNetUnfolder]: 170/396 cut-off events. [2021-10-15 20:16:46,348 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:46,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 396 events. 170/396 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 969 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 464. Up to 117 conditions per place. [2021-10-15 20:16:46,353 INFO L132 encePairwiseOnDemand]: 461/465 looper letters, 65 selfloop transitions, 3 changer transitions 0/394 dead transitions. [2021-10-15 20:16:46,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 394 transitions, 924 flow [2021-10-15 20:16:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1056 transitions. [2021-10-15 20:16:46,360 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7569892473118279 [2021-10-15 20:16:46,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1056 transitions. [2021-10-15 20:16:46,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1056 transitions. [2021-10-15 20:16:46,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:46,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1056 transitions. [2021-10-15 20:16:46,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 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) [2021-10-15 20:16:46,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:46,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:46,378 INFO L186 Difference]: Start difference. First operand has 225 places, 393 transitions, 786 flow. Second operand 3 states and 1056 transitions. [2021-10-15 20:16:46,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 394 transitions, 924 flow [2021-10-15 20:16:46,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 394 transitions, 924 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:16:46,399 INFO L242 Difference]: Finished difference. Result has 229 places, 394 transitions, 804 flow [2021-10-15 20:16:46,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=229, PETRI_TRANSITIONS=394} [2021-10-15 20:16:46,404 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, -4 predicate places. [2021-10-15 20:16:46,404 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 394 transitions, 804 flow [2021-10-15 20:16:46,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 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) [2021-10-15 20:16:46,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:46,406 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:46,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:16:46,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:46,409 INFO L82 PathProgramCache]: Analyzing trace with hash 658033430, now seen corresponding path program 1 times [2021-10-15 20:16:46,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:46,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088152229] [2021-10-15 20:16:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:46,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:46,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:46,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088152229] [2021-10-15 20:16:46,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088152229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:46,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:46,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:46,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206838111] [2021-10-15 20:16:46,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:46,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:46,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 465 [2021-10-15 20:16:46,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 394 transitions, 804 flow. Second operand has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 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) [2021-10-15 20:16:46,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:46,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 465 [2021-10-15 20:16:46,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:46,767 INFO L129 PetriNetUnfolder]: 169/401 cut-off events. [2021-10-15 20:16:46,767 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-10-15 20:16:46,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 401 events. 169/401 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 800 event pairs, 0 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 481. Up to 117 conditions per place. [2021-10-15 20:16:46,773 INFO L132 encePairwiseOnDemand]: 456/465 looper letters, 65 selfloop transitions, 6 changer transitions 0/397 dead transitions. [2021-10-15 20:16:46,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 397 transitions, 954 flow [2021-10-15 20:16:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2021-10-15 20:16:46,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598566308243727 [2021-10-15 20:16:46,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1060 transitions. [2021-10-15 20:16:46,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1060 transitions. [2021-10-15 20:16:46,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:46,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1060 transitions. [2021-10-15 20:16:46,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 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) [2021-10-15 20:16:46,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:46,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:46,798 INFO L186 Difference]: Start difference. First operand has 229 places, 394 transitions, 804 flow. Second operand 3 states and 1060 transitions. [2021-10-15 20:16:46,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 397 transitions, 954 flow [2021-10-15 20:16:46,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 397 transitions, 948 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:46,816 INFO L242 Difference]: Finished difference. Result has 231 places, 395 transitions, 832 flow [2021-10-15 20:16:46,817 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=832, PETRI_PLACES=231, PETRI_TRANSITIONS=395} [2021-10-15 20:16:46,817 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, -2 predicate places. [2021-10-15 20:16:46,818 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 395 transitions, 832 flow [2021-10-15 20:16:46,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 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) [2021-10-15 20:16:46,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:46,820 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:46,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:16:46,820 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:46,822 INFO L82 PathProgramCache]: Analyzing trace with hash 259035552, now seen corresponding path program 1 times [2021-10-15 20:16:46,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:46,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706674511] [2021-10-15 20:16:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:46,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:46,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:46,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706674511] [2021-10-15 20:16:46,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706674511] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:46,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:46,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680134913] [2021-10-15 20:16:46,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:46,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:46,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:46,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:46,963 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 465 [2021-10-15 20:16:46,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 395 transitions, 832 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2021-10-15 20:16:46,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:46,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 465 [2021-10-15 20:16:46,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:47,213 INFO L129 PetriNetUnfolder]: 182/455 cut-off events. [2021-10-15 20:16:47,214 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-10-15 20:16:47,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 455 events. 182/455 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1120 event pairs, 0 based on Foata normal form. 2/319 useless extension candidates. Maximal degree in co-relation 568. Up to 129 conditions per place. [2021-10-15 20:16:47,219 INFO L132 encePairwiseOnDemand]: 443/465 looper letters, 65 selfloop transitions, 20 changer transitions 0/403 dead transitions. [2021-10-15 20:16:47,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 403 transitions, 1024 flow [2021-10-15 20:16:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1059 transitions. [2021-10-15 20:16:47,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591397849462366 [2021-10-15 20:16:47,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1059 transitions. [2021-10-15 20:16:47,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1059 transitions. [2021-10-15 20:16:47,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:47,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1059 transitions. [2021-10-15 20:16:47,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 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) [2021-10-15 20:16:47,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:47,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:47,244 INFO L186 Difference]: Start difference. First operand has 231 places, 395 transitions, 832 flow. Second operand 3 states and 1059 transitions. [2021-10-15 20:16:47,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 403 transitions, 1024 flow [2021-10-15 20:16:47,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 403 transitions, 1010 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:47,262 INFO L242 Difference]: Finished difference. Result has 233 places, 398 transitions, 920 flow [2021-10-15 20:16:47,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=920, PETRI_PLACES=233, PETRI_TRANSITIONS=398} [2021-10-15 20:16:47,264 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, 0 predicate places. [2021-10-15 20:16:47,264 INFO L470 AbstractCegarLoop]: Abstraction has has 233 places, 398 transitions, 920 flow [2021-10-15 20:16:47,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2021-10-15 20:16:47,266 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:47,266 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:47,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:16:47,267 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash -548412413, now seen corresponding path program 1 times [2021-10-15 20:16:47,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:47,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477347767] [2021-10-15 20:16:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:47,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:47,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:47,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477347767] [2021-10-15 20:16:47,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477347767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:47,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:47,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:47,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198935916] [2021-10-15 20:16:47,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:47,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:47,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 465 [2021-10-15 20:16:47,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 398 transitions, 920 flow. Second operand has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 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) [2021-10-15 20:16:47,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:47,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 465 [2021-10-15 20:16:47,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:47,641 INFO L129 PetriNetUnfolder]: 174/447 cut-off events. [2021-10-15 20:16:47,641 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-10-15 20:16:47,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 447 events. 174/447 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1110 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 576. Up to 129 conditions per place. [2021-10-15 20:16:47,646 INFO L132 encePairwiseOnDemand]: 458/465 looper letters, 59 selfloop transitions, 1 changer transitions 0/392 dead transitions. [2021-10-15 20:16:47,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 392 transitions, 1028 flow [2021-10-15 20:16:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1079 transitions. [2021-10-15 20:16:47,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7734767025089606 [2021-10-15 20:16:47,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1079 transitions. [2021-10-15 20:16:47,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1079 transitions. [2021-10-15 20:16:47,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:47,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1079 transitions. [2021-10-15 20:16:47,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.6666666666667) internal successors, (1079), 3 states have internal predecessors, (1079), 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) [2021-10-15 20:16:47,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:47,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:47,671 INFO L186 Difference]: Start difference. First operand has 233 places, 398 transitions, 920 flow. Second operand 3 states and 1079 transitions. [2021-10-15 20:16:47,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 392 transitions, 1028 flow [2021-10-15 20:16:47,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 392 transitions, 988 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:47,691 INFO L242 Difference]: Finished difference. Result has 233 places, 392 transitions, 870 flow [2021-10-15 20:16:47,692 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=870, PETRI_PLACES=233, PETRI_TRANSITIONS=392} [2021-10-15 20:16:47,693 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, 0 predicate places. [2021-10-15 20:16:47,693 INFO L470 AbstractCegarLoop]: Abstraction has has 233 places, 392 transitions, 870 flow [2021-10-15 20:16:47,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 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) [2021-10-15 20:16:47,695 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:47,695 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:47,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:16:47,696 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash -296229375, now seen corresponding path program 1 times [2021-10-15 20:16:47,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:47,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391386408] [2021-10-15 20:16:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:47,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:47,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:47,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391386408] [2021-10-15 20:16:47,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391386408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:47,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:47,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:47,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645632719] [2021-10-15 20:16:47,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:47,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:47,872 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 465 [2021-10-15 20:16:47,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 392 transitions, 870 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2021-10-15 20:16:47,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:47,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 465 [2021-10-15 20:16:47,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:48,572 INFO L129 PetriNetUnfolder]: 225/693 cut-off events. [2021-10-15 20:16:48,572 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-10-15 20:16:48,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 693 events. 225/693 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2719 event pairs, 0 based on Foata normal form. 4/487 useless extension candidates. Maximal degree in co-relation 970. Up to 138 conditions per place. [2021-10-15 20:16:48,579 INFO L132 encePairwiseOnDemand]: 347/465 looper letters, 148 selfloop transitions, 43 changer transitions 0/414 dead transitions. [2021-10-15 20:16:48,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 414 transitions, 1326 flow [2021-10-15 20:16:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 967 transitions. [2021-10-15 20:16:48,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6931899641577061 [2021-10-15 20:16:48,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 967 transitions. [2021-10-15 20:16:48,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 967 transitions. [2021-10-15 20:16:48,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:48,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 967 transitions. [2021-10-15 20:16:48,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 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) [2021-10-15 20:16:48,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:48,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:48,600 INFO L186 Difference]: Start difference. First operand has 233 places, 392 transitions, 870 flow. Second operand 3 states and 967 transitions. [2021-10-15 20:16:48,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 414 transitions, 1326 flow [2021-10-15 20:16:48,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 414 transitions, 1325 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:48,616 INFO L242 Difference]: Finished difference. Result has 236 places, 399 transitions, 1241 flow [2021-10-15 20:16:48,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1241, PETRI_PLACES=236, PETRI_TRANSITIONS=399} [2021-10-15 20:16:48,618 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, 3 predicate places. [2021-10-15 20:16:48,618 INFO L470 AbstractCegarLoop]: Abstraction has has 236 places, 399 transitions, 1241 flow [2021-10-15 20:16:48,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2021-10-15 20:16:48,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:48,620 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:48,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 20:16:48,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1374287257, now seen corresponding path program 1 times [2021-10-15 20:16:48,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:48,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120384276] [2021-10-15 20:16:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:48,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-15 20:16:48,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:48,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120384276] [2021-10-15 20:16:48,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120384276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:48,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:48,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:48,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130386443] [2021-10-15 20:16:48,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:48,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:48,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:48,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:48,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 465 [2021-10-15 20:16:48,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 399 transitions, 1241 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 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) [2021-10-15 20:16:48,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:48,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 465 [2021-10-15 20:16:48,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:48,800 INFO L129 PetriNetUnfolder]: 183/541 cut-off events. [2021-10-15 20:16:48,800 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2021-10-15 20:16:48,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 541 events. 183/541 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1669 event pairs, 0 based on Foata normal form. 4/410 useless extension candidates. Maximal degree in co-relation 808. Up to 110 conditions per place. [2021-10-15 20:16:48,806 INFO L132 encePairwiseOnDemand]: 458/465 looper letters, 31 selfloop transitions, 6 changer transitions 6/370 dead transitions. [2021-10-15 20:16:48,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 370 transitions, 1215 flow [2021-10-15 20:16:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:48,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2021-10-15 20:16:48,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2021-10-15 20:16:48,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2021-10-15 20:16:48,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2021-10-15 20:16:48,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:48,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2021-10-15 20:16:48,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 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) [2021-10-15 20:16:48,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:48,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:48,829 INFO L186 Difference]: Start difference. First operand has 236 places, 399 transitions, 1241 flow. Second operand 3 states and 1023 transitions. [2021-10-15 20:16:48,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 370 transitions, 1215 flow [2021-10-15 20:16:48,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 370 transitions, 1083 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-15 20:16:48,849 INFO L242 Difference]: Finished difference. Result has 219 places, 362 transitions, 1003 flow [2021-10-15 20:16:48,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1003, PETRI_PLACES=219, PETRI_TRANSITIONS=362} [2021-10-15 20:16:48,852 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, -14 predicate places. [2021-10-15 20:16:48,853 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 362 transitions, 1003 flow [2021-10-15 20:16:48,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 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) [2021-10-15 20:16:48,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:48,854 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:48,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:16:48,854 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:48,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:48,855 INFO L82 PathProgramCache]: Analyzing trace with hash -968828347, now seen corresponding path program 1 times [2021-10-15 20:16:48,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:48,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603133747] [2021-10-15 20:16:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:48,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-15 20:16:48,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:48,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603133747] [2021-10-15 20:16:48,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603133747] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:48,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:48,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:48,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121984851] [2021-10-15 20:16:48,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:48,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:48,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 465 [2021-10-15 20:16:48,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 362 transitions, 1003 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 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) [2021-10-15 20:16:48,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:48,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 465 [2021-10-15 20:16:48,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:49,094 INFO L129 PetriNetUnfolder]: 169/509 cut-off events. [2021-10-15 20:16:49,094 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-10-15 20:16:49,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 509 events. 169/509 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1548 event pairs, 0 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 688. Up to 102 conditions per place. [2021-10-15 20:16:49,099 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 22 selfloop transitions, 6 changer transitions 0/348 dead transitions. [2021-10-15 20:16:49,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 348 transitions, 1023 flow [2021-10-15 20:16:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1006 transitions. [2021-10-15 20:16:49,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7211469534050179 [2021-10-15 20:16:49,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1006 transitions. [2021-10-15 20:16:49,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1006 transitions. [2021-10-15 20:16:49,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:49,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1006 transitions. [2021-10-15 20:16:49,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 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) [2021-10-15 20:16:49,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:49,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:49,122 INFO L186 Difference]: Start difference. First operand has 219 places, 362 transitions, 1003 flow. Second operand 3 states and 1006 transitions. [2021-10-15 20:16:49,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 348 transitions, 1023 flow [2021-10-15 20:16:49,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 348 transitions, 1011 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:49,139 INFO L242 Difference]: Finished difference. Result has 209 places, 348 transitions, 967 flow [2021-10-15 20:16:49,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=967, PETRI_PLACES=209, PETRI_TRANSITIONS=348} [2021-10-15 20:16:49,140 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, -24 predicate places. [2021-10-15 20:16:49,141 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 348 transitions, 967 flow [2021-10-15 20:16:49,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 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) [2021-10-15 20:16:49,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:49,142 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:49,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:16:49,143 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:49,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1704110053, now seen corresponding path program 1 times [2021-10-15 20:16:49,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:49,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247534121] [2021-10-15 20:16:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:49,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-15 20:16:49,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:49,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247534121] [2021-10-15 20:16:49,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247534121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:49,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:49,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:49,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207033102] [2021-10-15 20:16:49,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:49,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:49,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:49,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 465 [2021-10-15 20:16:49,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 348 transitions, 967 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2021-10-15 20:16:49,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:49,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 465 [2021-10-15 20:16:49,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:49,694 INFO L129 PetriNetUnfolder]: 133/473 cut-off events. [2021-10-15 20:16:49,694 INFO L130 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2021-10-15 20:16:49,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 473 events. 133/473 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1501 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 714. Up to 102 conditions per place. [2021-10-15 20:16:49,699 INFO L132 encePairwiseOnDemand]: 426/465 looper letters, 135 selfloop transitions, 3 changer transitions 0/321 dead transitions. [2021-10-15 20:16:49,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 321 transitions, 1117 flow [2021-10-15 20:16:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2021-10-15 20:16:49,706 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6279569892473118 [2021-10-15 20:16:49,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2021-10-15 20:16:49,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2021-10-15 20:16:49,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:49,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2021-10-15 20:16:49,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:49,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:49,717 INFO L186 Difference]: Start difference. First operand has 209 places, 348 transitions, 967 flow. Second operand 3 states and 876 transitions. [2021-10-15 20:16:49,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 321 transitions, 1117 flow [2021-10-15 20:16:49,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 321 transitions, 1105 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:49,731 INFO L242 Difference]: Finished difference. Result has 209 places, 312 transitions, 817 flow [2021-10-15 20:16:49,732 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=817, PETRI_PLACES=209, PETRI_TRANSITIONS=312} [2021-10-15 20:16:49,733 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, -24 predicate places. [2021-10-15 20:16:49,733 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 312 transitions, 817 flow [2021-10-15 20:16:49,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2021-10-15 20:16:49,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:49,734 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:49,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:16:49,735 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:49,736 INFO L82 PathProgramCache]: Analyzing trace with hash -533172694, now seen corresponding path program 1 times [2021-10-15 20:16:49,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:49,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540190094] [2021-10-15 20:16:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:49,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-15 20:16:49,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:49,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540190094] [2021-10-15 20:16:49,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540190094] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:49,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:49,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:49,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371301852] [2021-10-15 20:16:49,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:49,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:49,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:49,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:49,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 465 [2021-10-15 20:16:49,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 312 transitions, 817 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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) [2021-10-15 20:16:49,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:49,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 465 [2021-10-15 20:16:49,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:49,915 INFO L129 PetriNetUnfolder]: 120/433 cut-off events. [2021-10-15 20:16:49,915 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-10-15 20:16:49,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 433 events. 120/433 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1270 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 573. Up to 89 conditions per place. [2021-10-15 20:16:49,919 INFO L132 encePairwiseOnDemand]: 461/465 looper letters, 28 selfloop transitions, 4 changer transitions 2/314 dead transitions. [2021-10-15 20:16:49,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 314 transitions, 881 flow [2021-10-15 20:16:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1019 transitions. [2021-10-15 20:16:49,925 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7304659498207885 [2021-10-15 20:16:49,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1019 transitions. [2021-10-15 20:16:49,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1019 transitions. [2021-10-15 20:16:49,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:49,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1019 transitions. [2021-10-15 20:16:49,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 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) [2021-10-15 20:16:49,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:49,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:49,938 INFO L186 Difference]: Start difference. First operand has 209 places, 312 transitions, 817 flow. Second operand 3 states and 1019 transitions. [2021-10-15 20:16:49,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 314 transitions, 881 flow [2021-10-15 20:16:49,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 314 transitions, 877 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:49,950 INFO L242 Difference]: Finished difference. Result has 212 places, 309 transitions, 819 flow [2021-10-15 20:16:49,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=819, PETRI_PLACES=212, PETRI_TRANSITIONS=309} [2021-10-15 20:16:49,952 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, -21 predicate places. [2021-10-15 20:16:49,952 INFO L470 AbstractCegarLoop]: Abstraction has has 212 places, 309 transitions, 819 flow [2021-10-15 20:16:49,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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) [2021-10-15 20:16:49,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:49,954 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:49,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 20:16:49,954 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:49,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:49,956 INFO L82 PathProgramCache]: Analyzing trace with hash -717812843, now seen corresponding path program 1 times [2021-10-15 20:16:49,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:49,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556363716] [2021-10-15 20:16:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:49,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-15 20:16:50,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:50,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556363716] [2021-10-15 20:16:50,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556363716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:50,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:50,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:50,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780289594] [2021-10-15 20:16:50,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:50,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:50,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:50,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 465 [2021-10-15 20:16:50,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 309 transitions, 819 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 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) [2021-10-15 20:16:50,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:50,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 465 [2021-10-15 20:16:50,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:50,097 INFO L129 PetriNetUnfolder]: 73/244 cut-off events. [2021-10-15 20:16:50,098 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2021-10-15 20:16:50,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 244 events. 73/244 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 392 event pairs, 0 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 338. Up to 77 conditions per place. [2021-10-15 20:16:50,099 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 0 selfloop transitions, 0 changer transitions 238/238 dead transitions. [2021-10-15 20:16:50,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 238 transitions, 657 flow [2021-10-15 20:16:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2021-10-15 20:16:50,105 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7297491039426524 [2021-10-15 20:16:50,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2021-10-15 20:16:50,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2021-10-15 20:16:50,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:50,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2021-10-15 20:16:50,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 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) [2021-10-15 20:16:50,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:50,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2021-10-15 20:16:50,139 INFO L186 Difference]: Start difference. First operand has 212 places, 309 transitions, 819 flow. Second operand 3 states and 1018 transitions. [2021-10-15 20:16:50,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 238 transitions, 657 flow [2021-10-15 20:16:50,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 238 transitions, 571 flow, removed 37 selfloop flow, removed 5 redundant places. [2021-10-15 20:16:50,147 INFO L242 Difference]: Finished difference. Result has 170 places, 0 transitions, 0 flow [2021-10-15 20:16:50,147 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=170, PETRI_TRANSITIONS=0} [2021-10-15 20:16:50,148 INFO L334 CegarLoopForPetriNet]: 233 programPoint places, -63 predicate places. [2021-10-15 20:16:50,148 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 0 transitions, 0 flow [2021-10-15 20:16:50,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 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) [2021-10-15 20:16:50,152 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:50,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 20:16:50,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:16:50,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:16:50 BoogieIcfgContainer [2021-10-15 20:16:50,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:16:50,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:16:50,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:16:50,166 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:16:50,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:45" (3/4) ... [2021-10-15 20:16:50,170 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:16:50,212 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 20:16:50,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 20:16:50,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:16:50,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:16:50,247 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:16:50,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:16:50,250 INFO L168 Benchmark]: Toolchain (without parser) took 9648.62 ms. Allocated memory was 111.1 MB in the beginning and 308.3 MB in the end (delta: 197.1 MB). Free memory was 71.4 MB in the beginning and 209.9 MB in the end (delta: -138.5 MB). Peak memory consumption was 57.0 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:50,250 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 111.1 MB. Free memory was 65.2 MB in the beginning and 65.1 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:50,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1549.76 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 71.2 MB in the beginning and 96.1 MB in the end (delta: -24.9 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:50,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 249.02 ms. Allocated memory is still 138.4 MB. Free memory was 96.1 MB in the beginning and 72.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:50,252 INFO L168 Benchmark]: Boogie Preprocessor took 188.54 ms. Allocated memory is still 138.4 MB. Free memory was 72.3 MB in the beginning and 59.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:50,253 INFO L168 Benchmark]: RCFGBuilder took 2496.02 ms. Allocated memory was 138.4 MB in the beginning and 180.4 MB in the end (delta: 41.9 MB). Free memory was 59.7 MB in the beginning and 121.1 MB in the end (delta: -61.4 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:50,253 INFO L168 Benchmark]: TraceAbstraction took 5073.10 ms. Allocated memory was 180.4 MB in the beginning and 308.3 MB in the end (delta: 127.9 MB). Free memory was 120.1 MB in the beginning and 214.1 MB in the end (delta: -94.0 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:50,254 INFO L168 Benchmark]: Witness Printer took 82.08 ms. Allocated memory is still 308.3 MB. Free memory was 214.1 MB in the beginning and 209.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:50,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 111.1 MB. Free memory was 65.2 MB in the beginning and 65.1 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1549.76 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 71.2 MB in the beginning and 96.1 MB in the end (delta: -24.9 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 249.02 ms. Allocated memory is still 138.4 MB. Free memory was 96.1 MB in the beginning and 72.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 188.54 ms. Allocated memory is still 138.4 MB. Free memory was 72.3 MB in the beginning and 59.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2496.02 ms. Allocated memory was 138.4 MB in the beginning and 180.4 MB in the end (delta: 41.9 MB). Free memory was 59.7 MB in the beginning and 121.1 MB in the end (delta: -61.4 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5073.10 ms. Allocated memory was 180.4 MB in the beginning and 308.3 MB in the end (delta: 127.9 MB). Free memory was 120.1 MB in the beginning and 214.1 MB in the end (delta: -94.0 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. * Witness Printer took 82.08 ms. Allocated memory is still 308.3 MB. Free memory was 214.1 MB in the beginning and 209.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1256]: 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 CFG has 1 procedures, 237 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 17.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4978.5ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 3366.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 227.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 466 SDtfs, 96 SDslu, 0 SDs, 0 SdLazy, 630 SolverSat, 301 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1437.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1241occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 74.6ms SsaConstructionTime, 368.4ms SatisfiabilityAnalysisTime, 586.4ms InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 47/47 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! [2021-10-15 20:16:50,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef20e1ef-53a6-48f5-aad3-05033abaed8e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...