./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.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_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/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_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/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_6c0d68c7-7a6c-40de-9736-49399e64ccaa/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 86d50476b0a5ff5d2cfee5f4f0e078a14c6aba43 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 19:53:40,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:53:40,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:53:40,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:53:40,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:53:40,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:53:40,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:53:40,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:53:40,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:53:40,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:53:40,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:53:40,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:53:40,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:53:40,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:53:40,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:53:40,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:53:40,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:53:40,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:53:40,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:53:40,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:53:40,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:53:40,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:53:40,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:53:40,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:53:40,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:53:40,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:53:40,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:53:40,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:53:40,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:53:40,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:53:40,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:53:40,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:53:40,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:53:40,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:53:40,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:53:40,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:53:40,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:53:40,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:53:40,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:53:40,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:53:40,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:53:40,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:53:40,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:53:40,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:53:40,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:53:40,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:53:40,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:53:40,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:53:40,394 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:53:40,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:53:40,395 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:53:40,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:53:40,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:53:40,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:53:40,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:53:40,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:53:40,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:53:40,398 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:53:40,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:53:40,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:53:40,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:53:40,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:53:40,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:53:40,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:53:40,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:53:40,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:53:40,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:53:40,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:53:40,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:53:40,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:53:40,401 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:53:40,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:53:40,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:53:40,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:53:40,404 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_6c0d68c7-7a6c-40de-9736-49399e64ccaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86d50476b0a5ff5d2cfee5f4f0e078a14c6aba43 [2021-10-15 19:53:40,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:53:40,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:53:40,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:53:40,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:53:40,712 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:53:40,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2021-10-15 19:53:40,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/data/95132e618/affd12d3bdca4427a4e5fd2f6c899e92/FLAGecb0c3888 [2021-10-15 19:53:41,468 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:53:41,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2021-10-15 19:53:41,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/data/95132e618/affd12d3bdca4427a4e5fd2f6c899e92/FLAGecb0c3888 [2021-10-15 19:53:41,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/data/95132e618/affd12d3bdca4427a4e5fd2f6c899e92 [2021-10-15 19:53:41,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:53:41,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:53:41,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:53:41,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:53:41,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:53:41,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:53:41" (1/1) ... [2021-10-15 19:53:41,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537afc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:41, skipping insertion in model container [2021-10-15 19:53:41,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:53:41" (1/1) ... [2021-10-15 19:53:41,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:53:41,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:53:42,243 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_6c0d68c7-7a6c-40de-9736-49399e64ccaa/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2021-10-15 19:53:42,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:53:42,309 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:53:42,441 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_6c0d68c7-7a6c-40de-9736-49399e64ccaa/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2021-10-15 19:53:42,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:53:42,483 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:53:42,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42 WrapperNode [2021-10-15 19:53:42,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:53:42,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:53:42,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:53:42,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:53:42,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:53:42,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:53:42,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:53:42,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:53:42,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:53:42,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:53:42,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:53:42,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:53:42,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (1/1) ... [2021-10-15 19:53:42,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:53:42,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:53:42,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:53:42,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:53:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:53:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:53:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:53:42,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:53:43,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:53:43,914 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 19:53:43,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:53:43 BoogieIcfgContainer [2021-10-15 19:53:43,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:53:43,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:53:43,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:53:43,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:53:43,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:53:41" (1/3) ... [2021-10-15 19:53:43,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a64d67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:53:43, skipping insertion in model container [2021-10-15 19:53:43,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:42" (2/3) ... [2021-10-15 19:53:43,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a64d67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:53:43, skipping insertion in model container [2021-10-15 19:53:43,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:53:43" (3/3) ... [2021-10-15 19:53:43,928 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2021-10-15 19:53:43,934 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:53:43,934 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:53:43,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:53:43,999 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 19:53:43,999 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:53:44,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 327 transitions, 654 flow [2021-10-15 19:53:44,134 INFO L129 PetriNetUnfolder]: 130/327 cut-off events. [2021-10-15 19:53:44,137 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:53:44,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 327 events. 130/327 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 203 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 0. Up to 67 conditions per place. [2021-10-15 19:53:44,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 327 transitions, 654 flow [2021-10-15 19:53:44,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 322 transitions, 644 flow [2021-10-15 19:53:44,200 INFO L129 PetriNetUnfolder]: 107/261 cut-off events. [2021-10-15 19:53:44,200 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:53:44,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:53:44,202 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:53:44,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:53:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:53:44,208 INFO L82 PathProgramCache]: Analyzing trace with hash -429824977, now seen corresponding path program 1 times [2021-10-15 19:53:44,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:53:44,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739786103] [2021-10-15 19:53:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:53:44,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:53:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:53:44,643 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 19:53:44,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:53:44,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739786103] [2021-10-15 19:53:44,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739786103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:53:44,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:53:44,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:53:44,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820158353] [2021-10-15 19:53:44,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:53:44,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:53:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:53:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:53:44,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 327 [2021-10-15 19:53:44,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 322 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 19:53:44,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:53:44,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 327 [2021-10-15 19:53:44,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:53:45,706 INFO L129 PetriNetUnfolder]: 168/493 cut-off events. [2021-10-15 19:53:45,706 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:53:45,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 493 events. 168/493 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 669 event pairs, 0 based on Foata normal form. 61/326 useless extension candidates. Maximal degree in co-relation 1. Up to 311 conditions per place. [2021-10-15 19:53:45,713 INFO L132 encePairwiseOnDemand]: 138/327 looper letters, 316 selfloop transitions, 66 changer transitions 101/489 dead transitions. [2021-10-15 19:53:45,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 489 transitions, 1944 flow [2021-10-15 19:53:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:53:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:53:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2021-10-15 19:53:45,732 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6085626911314985 [2021-10-15 19:53:45,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2021-10-15 19:53:45,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2021-10-15 19:53:45,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:53:45,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2021-10-15 19:53:45,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:53:45,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:45,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:45,758 INFO L186 Difference]: Start difference. First operand has 195 places, 322 transitions, 644 flow. Second operand 3 states and 597 transitions. [2021-10-15 19:53:45,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 489 transitions, 1944 flow [2021-10-15 19:53:45,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 489 transitions, 1944 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:53:45,779 INFO L242 Difference]: Finished difference. Result has 199 places, 261 transitions, 910 flow [2021-10-15 19:53:45,781 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=199, PETRI_TRANSITIONS=261} [2021-10-15 19:53:45,782 INFO L334 CegarLoopForPetriNet]: 195 programPoint places, 4 predicate places. [2021-10-15 19:53:45,783 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 261 transitions, 910 flow [2021-10-15 19:53:45,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 19:53:45,784 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:53:45,784 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:45,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:53:45,785 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:53:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:53:45,786 INFO L82 PathProgramCache]: Analyzing trace with hash -779345401, now seen corresponding path program 1 times [2021-10-15 19:53:45,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:53:45,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206777734] [2021-10-15 19:53:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:53:45,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:53:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:53:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:53:45,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:53:45,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206777734] [2021-10-15 19:53:45,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206777734] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:53:45,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:53:45,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:53:45,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535165889] [2021-10-15 19:53:45,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:53:45,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:53:45,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:53:45,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:53:45,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 327 [2021-10-15 19:53:45,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 261 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 19:53:45,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:53:45,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 327 [2021-10-15 19:53:45,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:53:46,553 INFO L129 PetriNetUnfolder]: 218/745 cut-off events. [2021-10-15 19:53:46,553 INFO L130 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2021-10-15 19:53:46,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1808 conditions, 745 events. 218/745 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1617 event pairs, 0 based on Foata normal form. 36/781 useless extension candidates. Maximal degree in co-relation 772. Up to 457 conditions per place. [2021-10-15 19:53:46,562 INFO L132 encePairwiseOnDemand]: 259/327 looper letters, 357 selfloop transitions, 116 changer transitions 0/479 dead transitions. [2021-10-15 19:53:46,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 479 transitions, 2568 flow [2021-10-15 19:53:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:53:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:53:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2021-10-15 19:53:46,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4240570846075433 [2021-10-15 19:53:46,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2021-10-15 19:53:46,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2021-10-15 19:53:46,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:53:46,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2021-10-15 19:53:46,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 19:53:46,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:46,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:46,576 INFO L186 Difference]: Start difference. First operand has 199 places, 261 transitions, 910 flow. Second operand 3 states and 416 transitions. [2021-10-15 19:53:46,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 479 transitions, 2568 flow [2021-10-15 19:53:46,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 479 transitions, 2342 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:53:46,604 INFO L242 Difference]: Finished difference. Result has 141 places, 352 transitions, 1812 flow [2021-10-15 19:53:46,605 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1812, PETRI_PLACES=141, PETRI_TRANSITIONS=352} [2021-10-15 19:53:46,605 INFO L334 CegarLoopForPetriNet]: 195 programPoint places, -54 predicate places. [2021-10-15 19:53:46,606 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 352 transitions, 1812 flow [2021-10-15 19:53:46,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 19:53:46,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:53:46,607 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:46,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:53:46,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:53:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:53:46,609 INFO L82 PathProgramCache]: Analyzing trace with hash 785225134, now seen corresponding path program 1 times [2021-10-15 19:53:46,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:53:46,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895165321] [2021-10-15 19:53:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:53:46,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:53:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:53:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:53:46,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:53:46,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895165321] [2021-10-15 19:53:46,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895165321] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:53:46,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:53:46,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:53:46,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513274833] [2021-10-15 19:53:46,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:53:46,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:53:46,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:53:46,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:53:46,709 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 327 [2021-10-15 19:53:46,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 352 transitions, 1812 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 19:53:46,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:53:46,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 327 [2021-10-15 19:53:46,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:53:47,516 INFO L129 PetriNetUnfolder]: 266/1186 cut-off events. [2021-10-15 19:53:47,517 INFO L130 PetriNetUnfolder]: For 726/726 co-relation queries the response was YES. [2021-10-15 19:53:47,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1186 events. 266/1186 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 3696 event pairs, 0 based on Foata normal form. 103/1289 useless extension candidates. Maximal degree in co-relation 842. Up to 674 conditions per place. [2021-10-15 19:53:47,526 INFO L132 encePairwiseOnDemand]: 259/327 looper letters, 405 selfloop transitions, 116 changer transitions 0/527 dead transitions. [2021-10-15 19:53:47,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 527 transitions, 3442 flow [2021-10-15 19:53:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:53:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:53:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2021-10-15 19:53:47,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4240570846075433 [2021-10-15 19:53:47,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2021-10-15 19:53:47,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2021-10-15 19:53:47,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:53:47,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2021-10-15 19:53:47,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 19:53:47,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:47,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:47,537 INFO L186 Difference]: Start difference. First operand has 141 places, 352 transitions, 1812 flow. Second operand 3 states and 416 transitions. [2021-10-15 19:53:47,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 527 transitions, 3442 flow [2021-10-15 19:53:47,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 527 transitions, 3164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:53:47,563 INFO L242 Difference]: Finished difference. Result has 143 places, 400 transitions, 2550 flow [2021-10-15 19:53:47,564 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2550, PETRI_PLACES=143, PETRI_TRANSITIONS=400} [2021-10-15 19:53:47,564 INFO L334 CegarLoopForPetriNet]: 195 programPoint places, -52 predicate places. [2021-10-15 19:53:47,564 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 400 transitions, 2550 flow [2021-10-15 19:53:47,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 19:53:47,565 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:53:47,565 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:47,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:53:47,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:53:47,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:53:47,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1310436254, now seen corresponding path program 1 times [2021-10-15 19:53:47,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:53:47,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755965186] [2021-10-15 19:53:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:53:47,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:53:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:53:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 19:53:47,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:53:47,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755965186] [2021-10-15 19:53:47,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755965186] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:53:47,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:53:47,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:53:47,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877761668] [2021-10-15 19:53:47,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:53:47,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:53:47,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:53:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:53:47,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 327 [2021-10-15 19:53:47,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 400 transitions, 2550 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 19:53:47,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:53:47,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 327 [2021-10-15 19:53:47,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:53:48,610 INFO L129 PetriNetUnfolder]: 290/1472 cut-off events. [2021-10-15 19:53:48,610 INFO L130 PetriNetUnfolder]: For 1478/1478 co-relation queries the response was YES. [2021-10-15 19:53:48,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3871 conditions, 1472 events. 290/1472 cut-off events. For 1478/1478 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5608 event pairs, 0 based on Foata normal form. 67/1539 useless extension candidates. Maximal degree in co-relation 979. Up to 763 conditions per place. [2021-10-15 19:53:48,622 INFO L132 encePairwiseOnDemand]: 275/327 looper letters, 409 selfloop transitions, 136 changer transitions 0/551 dead transitions. [2021-10-15 19:53:48,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 551 transitions, 4110 flow [2021-10-15 19:53:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:53:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:53:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2021-10-15 19:53:48,626 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4057084607543323 [2021-10-15 19:53:48,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2021-10-15 19:53:48,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2021-10-15 19:53:48,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:53:48,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2021-10-15 19:53:48,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 19:53:48,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:48,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:48,634 INFO L186 Difference]: Start difference. First operand has 143 places, 400 transitions, 2550 flow. Second operand 3 states and 398 transitions. [2021-10-15 19:53:48,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 551 transitions, 4110 flow [2021-10-15 19:53:48,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 551 transitions, 3854 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:53:48,669 INFO L242 Difference]: Finished difference. Result has 145 places, 424 transitions, 3182 flow [2021-10-15 19:53:48,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3182, PETRI_PLACES=145, PETRI_TRANSITIONS=424} [2021-10-15 19:53:48,670 INFO L334 CegarLoopForPetriNet]: 195 programPoint places, -50 predicate places. [2021-10-15 19:53:48,670 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 424 transitions, 3182 flow [2021-10-15 19:53:48,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 19:53:48,670 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:53:48,671 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:48,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:53:48,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:53:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:53:48,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1497661910, now seen corresponding path program 1 times [2021-10-15 19:53:48,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:53:48,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585637868] [2021-10-15 19:53:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:53:48,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:53:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:53:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 19:53:48,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:53:48,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585637868] [2021-10-15 19:53:48,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585637868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:53:48,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348013066] [2021-10-15 19:53:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:53:48,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:53:48,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:53:48,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:53:48,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:53:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:53:48,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:53:48,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:53:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-15 19:53:49,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348013066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:53:49,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:53:49,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-15 19:53:49,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720451630] [2021-10-15 19:53:49,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:53:49,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:53:49,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:53:49,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:53:49,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 327 [2021-10-15 19:53:49,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 424 transitions, 3182 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 19:53:49,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:53:49,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 327 [2021-10-15 19:53:49,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:53:50,760 INFO L129 PetriNetUnfolder]: 355/1930 cut-off events. [2021-10-15 19:53:50,760 INFO L130 PetriNetUnfolder]: For 2456/2456 co-relation queries the response was YES. [2021-10-15 19:53:50,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 1930 events. 355/1930 cut-off events. For 2456/2456 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 8902 event pairs, 0 based on Foata normal form. 1/1931 useless extension candidates. Maximal degree in co-relation 2233. Up to 1087 conditions per place. [2021-10-15 19:53:50,774 INFO L132 encePairwiseOnDemand]: 270/327 looper letters, 439 selfloop transitions, 171 changer transitions 0/616 dead transitions. [2021-10-15 19:53:50,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 616 transitions, 5356 flow [2021-10-15 19:53:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:53:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:53:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2021-10-15 19:53:50,777 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4057084607543323 [2021-10-15 19:53:50,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2021-10-15 19:53:50,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2021-10-15 19:53:50,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:53:50,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2021-10-15 19:53:50,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 19:53:50,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:50,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:50,785 INFO L186 Difference]: Start difference. First operand has 145 places, 424 transitions, 3182 flow. Second operand 3 states and 398 transitions. [2021-10-15 19:53:50,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 616 transitions, 5356 flow [2021-10-15 19:53:50,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 616 transitions, 5024 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:53:50,828 INFO L242 Difference]: Finished difference. Result has 147 places, 489 transitions, 4366 flow [2021-10-15 19:53:50,829 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=2900, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4366, PETRI_PLACES=147, PETRI_TRANSITIONS=489} [2021-10-15 19:53:50,830 INFO L334 CegarLoopForPetriNet]: 195 programPoint places, -48 predicate places. [2021-10-15 19:53:50,830 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 489 transitions, 4366 flow [2021-10-15 19:53:50,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 19:53:50,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:53:50,831 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:50,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:53:51,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:53:51,048 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:53:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:53:51,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1632805263, now seen corresponding path program 1 times [2021-10-15 19:53:51,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:53:51,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281878162] [2021-10-15 19:53:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:53:51,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:53:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:53:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-10-15 19:53:51,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:53:51,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281878162] [2021-10-15 19:53:51,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281878162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:53:51,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041296142] [2021-10-15 19:53:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:53:51,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:53:51,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:53:51,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:53:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:53:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:53:51,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:53:51,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:53:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-10-15 19:53:52,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041296142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:53:52,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:53:52,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-15 19:53:52,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161886259] [2021-10-15 19:53:52,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:53:52,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:53:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:53:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:53:52,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 327 [2021-10-15 19:53:52,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 489 transitions, 4366 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 19:53:52,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:53:52,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 327 [2021-10-15 19:53:52,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:53:53,124 INFO L129 PetriNetUnfolder]: 271/1844 cut-off events. [2021-10-15 19:53:53,124 INFO L130 PetriNetUnfolder]: For 3429/3429 co-relation queries the response was YES. [2021-10-15 19:53:53,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4969 conditions, 1844 events. 271/1844 cut-off events. For 3429/3429 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 8804 event pairs, 0 based on Foata normal form. 85/1929 useless extension candidates. Maximal degree in co-relation 1695. Up to 1395 conditions per place. [2021-10-15 19:53:53,130 INFO L132 encePairwiseOnDemand]: 266/327 looper letters, 0 selfloop transitions, 0 changer transitions 530/530 dead transitions. [2021-10-15 19:53:53,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 530 transitions, 4754 flow [2021-10-15 19:53:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:53:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:53:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2021-10-15 19:53:53,133 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.40468909276248727 [2021-10-15 19:53:53,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2021-10-15 19:53:53,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2021-10-15 19:53:53,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:53:53,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2021-10-15 19:53:53,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 19:53:53,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:53,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:53:53,140 INFO L186 Difference]: Start difference. First operand has 147 places, 489 transitions, 4366 flow. Second operand 3 states and 397 transitions. [2021-10-15 19:53:53,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 530 transitions, 4754 flow [2021-10-15 19:53:53,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 530 transitions, 4500 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:53:53,162 INFO L242 Difference]: Finished difference. Result has 145 places, 0 transitions, 0 flow [2021-10-15 19:53:53,163 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=3196, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=145, PETRI_TRANSITIONS=0} [2021-10-15 19:53:53,163 INFO L334 CegarLoopForPetriNet]: 195 programPoint places, -50 predicate places. [2021-10-15 19:53:53,164 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 0 transitions, 0 flow [2021-10-15 19:53:53,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 19:53:53,172 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:53:53,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:53:53,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-15 19:53:53,392 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:53:53,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:53:53 BoogieIcfgContainer [2021-10-15 19:53:53,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:53:53,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:53:53,401 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:53:53,401 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:53:53,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:53:43" (3/4) ... [2021-10-15 19:53:53,405 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:53:53,437 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 19:53:53,438 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:53:53,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:53:53,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:53:53,595 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:53:53,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:53:53,600 INFO L168 Benchmark]: Toolchain (without parser) took 11883.42 ms. Allocated memory was 113.2 MB in the beginning and 247.5 MB in the end (delta: 134.2 MB). Free memory was 82.3 MB in the beginning and 181.4 MB in the end (delta: -99.1 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:53:53,600 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:53:53,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.04 ms. Allocated memory was 113.2 MB in the beginning and 157.3 MB in the end (delta: 44.0 MB). Free memory was 82.0 MB in the beginning and 114.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:53:53,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.89 ms. Allocated memory is still 157.3 MB. Free memory was 114.3 MB in the beginning and 108.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:53:53,602 INFO L168 Benchmark]: Boogie Preprocessor took 95.69 ms. Allocated memory is still 157.3 MB. Free memory was 108.7 MB in the beginning and 104.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:53:53,602 INFO L168 Benchmark]: RCFGBuilder took 1241.61 ms. Allocated memory is still 157.3 MB. Free memory was 104.5 MB in the beginning and 92.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:53:53,603 INFO L168 Benchmark]: TraceAbstraction took 9480.93 ms. Allocated memory was 157.3 MB in the beginning and 247.5 MB in the end (delta: 90.2 MB). Free memory was 92.0 MB in the beginning and 195.6 MB in the end (delta: -103.6 MB). Peak memory consumption was 117.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:53:53,603 INFO L168 Benchmark]: Witness Printer took 196.98 ms. Allocated memory is still 247.5 MB. Free memory was 195.6 MB in the beginning and 181.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:53:53,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 767.04 ms. Allocated memory was 113.2 MB in the beginning and 157.3 MB in the end (delta: 44.0 MB). Free memory was 82.0 MB in the beginning and 114.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.89 ms. Allocated memory is still 157.3 MB. Free memory was 114.3 MB in the beginning and 108.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.69 ms. Allocated memory is still 157.3 MB. Free memory was 108.7 MB in the beginning and 104.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1241.61 ms. Allocated memory is still 157.3 MB. Free memory was 104.5 MB in the beginning and 92.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9480.93 ms. Allocated memory was 157.3 MB in the beginning and 247.5 MB in the end (delta: 90.2 MB). Free memory was 92.0 MB in the beginning and 195.6 MB in the end (delta: -103.6 MB). Peak memory consumption was 117.8 MB. Max. memory is 16.1 GB. * Witness Printer took 196.98 ms. Allocated memory is still 247.5 MB. Free memory was 195.6 MB in the beginning and 181.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 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: 522]: 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, 198 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 47.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9405.5ms, OverallIterations: 6, TraceHistogramMax: 5, EmptinessCheckTime: 0.0ms, AutomataDifference: 5900.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 153.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 348 SDtfs, 559 SDslu, 0 SDs, 0 SdLazy, 2012 SolverSat, 435 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2370.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4366occurred in iteration=5, InterpolantAutomatonStates: 18, 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: 129.3ms SsaConstructionTime, 344.6ms SatisfiabilityAnalysisTime, 2014.5ms InterpolantComputationTime, 1090 NumberOfCodeBlocks, 1090 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1082 ConstructedInterpolants, 0 QuantifiedInterpolants, 2198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 681 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 307/313 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 19:53:53,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c0d68c7-7a6c-40de-9736-49399e64ccaa/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...