./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX --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 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:40:56,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:40:56,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:40:56,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:40:56,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:40:56,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:40:56,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:40:56,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:40:56,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:40:56,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:40:56,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:40:56,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:40:56,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:40:56,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:40:56,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:40:56,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:40:56,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:40:56,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:40:56,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:40:56,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:40:56,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:40:56,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:40:56,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:40:56,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:40:56,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:40:56,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:40:56,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:40:56,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:40:56,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:40:56,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:40:56,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:40:56,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:40:56,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:40:56,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:40:56,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:40:56,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:40:56,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:40:56,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:40:56,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:40:56,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:40:56,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:40:56,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:40:56,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:40:56,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:40:56,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:40:56,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:40:56,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:40:56,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:40:56,759 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:40:56,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:40:56,760 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:40:56,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:40:56,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:40:56,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:40:56,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:40:56,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:40:56,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:40:56,763 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:40:56,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:40:56,763 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:40:56,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:40:56,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:40:56,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:40:56,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:40:56,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:40:56,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:40:56,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:40:56,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:40:56,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:40:56,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:40:56,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:40:56,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:40:56,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:40:56,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:40:56,770 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_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf [2021-11-09 09:40:57,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:40:57,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:40:57,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:40:57,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:40:57,159 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:40:57,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2021-11-09 09:40:57,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/data/b69b2c082/658a950e29454af490d988fd316543be/FLAGcc1ba0eca [2021-11-09 09:40:57,976 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:40:57,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2021-11-09 09:40:57,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/data/b69b2c082/658a950e29454af490d988fd316543be/FLAGcc1ba0eca [2021-11-09 09:40:58,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/data/b69b2c082/658a950e29454af490d988fd316543be [2021-11-09 09:40:58,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:40:58,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:40:58,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:40:58,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:40:58,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:40:58,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:40:58" (1/1) ... [2021-11-09 09:40:58,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160835a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:58, skipping insertion in model container [2021-11-09 09:40:58,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:40:58" (1/1) ... [2021-11-09 09:40:58,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:40:58,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:40:58,577 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_e780f44a-1743-4045-89bb-0c334f5c943d/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2021-11-09 09:40:58,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:40:58,897 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:40:58,917 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_e780f44a-1743-4045-89bb-0c334f5c943d/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2021-11-09 09:40:58,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:40:59,036 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:40:59,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59 WrapperNode [2021-11-09 09:40:59,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:40:59,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:40:59,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:40:59,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:40:59,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:40:59,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:40:59,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:40:59,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:40:59,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:40:59,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:40:59,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:40:59,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:40:59,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (1/1) ... [2021-11-09 09:40:59,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:40:59,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:40:59,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:40:59,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:40:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:40:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:40:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-09 09:40:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:40:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-09 09:40:59,279 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-09 09:40:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:40:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:40:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:40:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:40:59,282 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 09:40:59,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:40:59,931 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-09 09:40:59,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:40:59 BoogieIcfgContainer [2021-11-09 09:40:59,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:40:59,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:40:59,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:40:59,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:40:59,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:40:58" (1/3) ... [2021-11-09 09:40:59,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23be756f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:40:59, skipping insertion in model container [2021-11-09 09:40:59,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:40:59" (2/3) ... [2021-11-09 09:40:59,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23be756f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:40:59, skipping insertion in model container [2021-11-09 09:40:59,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:40:59" (3/3) ... [2021-11-09 09:40:59,950 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2021-11-09 09:40:59,957 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 09:40:59,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:40:59,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-09 09:40:59,958 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 09:41:00,012 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,012 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,013 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,013 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,013 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,014 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,014 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,014 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,015 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,015 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,016 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,016 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,020 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,023 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,023 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,024 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,025 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,025 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,025 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,026 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,027 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,028 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,028 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,029 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,029 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,030 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,030 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,030 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,031 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,032 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,032 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,033 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,034 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,035 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,035 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,035 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,036 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,037 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,037 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,037 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,038 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,038 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,038 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,039 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,064 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,065 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,065 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,065 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,066 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,066 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,066 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,066 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,067 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,067 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,067 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,068 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,068 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,068 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,069 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,069 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,079 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,079 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,080 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,080 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,080 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,081 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,081 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,082 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,084 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,084 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,085 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,085 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,085 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,086 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:41:00,097 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-09 09:41:00,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:41:00,198 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:41:00,199 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-09 09:41:00,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 128 places, 128 transitions, 264 flow [2021-11-09 09:41:00,345 INFO L129 PetriNetUnfolder]: 4/127 cut-off events. [2021-11-09 09:41:00,345 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-09 09:41:00,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 127 events. 4/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2021-11-09 09:41:00,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 128 transitions, 264 flow [2021-11-09 09:41:00,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 114 transitions, 231 flow [2021-11-09 09:41:00,390 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-11-09 09:41:00,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 09:41:00,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:41:00,392 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] [2021-11-09 09:41:00,393 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:41:00,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash 324499507, now seen corresponding path program 1 times [2021-11-09 09:41:00,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:00,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017789718] [2021-11-09 09:41:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:00,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:00,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:00,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017789718] [2021-11-09 09:41:00,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017789718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:00,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:00,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:41:00,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747349905] [2021-11-09 09:41:01,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:41:01,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:01,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:41:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:41:01,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 128 [2021-11-09 09:41:01,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 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) [2021-11-09 09:41:01,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:41:01,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 128 [2021-11-09 09:41:01,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:41:01,464 INFO L129 PetriNetUnfolder]: 89/648 cut-off events. [2021-11-09 09:41:01,464 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 09:41:01,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 648 events. 89/648 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3651 event pairs, 23 based on Foata normal form. 16/651 useless extension candidates. Maximal degree in co-relation 829. Up to 72 conditions per place. [2021-11-09 09:41:01,477 INFO L132 encePairwiseOnDemand]: 107/128 looper letters, 34 selfloop transitions, 23 changer transitions 5/146 dead transitions. [2021-11-09 09:41:01,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 146 transitions, 419 flow [2021-11-09 09:41:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:41:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-09 09:41:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 927 transitions. [2021-11-09 09:41:01,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8046875 [2021-11-09 09:41:01,515 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 927 transitions. [2021-11-09 09:41:01,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 927 transitions. [2021-11-09 09:41:01,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:41:01,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 927 transitions. [2021-11-09 09:41:01,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.0) internal successors, (927), 9 states have internal predecessors, (927), 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) [2021-11-09 09:41:01,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 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) [2021-11-09 09:41:01,550 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 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) [2021-11-09 09:41:01,553 INFO L186 Difference]: Start difference. First operand has 115 places, 114 transitions, 231 flow. Second operand 9 states and 927 transitions. [2021-11-09 09:41:01,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 146 transitions, 419 flow [2021-11-09 09:41:01,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 146 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-09 09:41:01,565 INFO L242 Difference]: Finished difference. Result has 126 places, 125 transitions, 367 flow [2021-11-09 09:41:01,568 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2021-11-09 09:41:01,569 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 11 predicate places. [2021-11-09 09:41:01,569 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 367 flow [2021-11-09 09:41:01,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 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) [2021-11-09 09:41:01,570 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:41:01,571 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:01,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:41:01,572 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:41:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 184025274, now seen corresponding path program 1 times [2021-11-09 09:41:01,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:01,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514242692] [2021-11-09 09:41:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:01,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:01,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:01,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514242692] [2021-11-09 09:41:01,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514242692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:01,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:01,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:41:01,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681507847] [2021-11-09 09:41:01,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:41:01,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:41:01,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:41:01,817 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 128 [2021-11-09 09:41:01,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 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) [2021-11-09 09:41:01,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:41:01,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 128 [2021-11-09 09:41:01,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:41:02,243 INFO L129 PetriNetUnfolder]: 77/745 cut-off events. [2021-11-09 09:41:02,243 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2021-11-09 09:41:02,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 745 events. 77/745 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4336 event pairs, 21 based on Foata normal form. 52/795 useless extension candidates. Maximal degree in co-relation 1216. Up to 99 conditions per place. [2021-11-09 09:41:02,250 INFO L132 encePairwiseOnDemand]: 106/128 looper letters, 26 selfloop transitions, 46 changer transitions 1/157 dead transitions. [2021-11-09 09:41:02,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 157 transitions, 551 flow [2021-11-09 09:41:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:41:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 09:41:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 679 transitions. [2021-11-09 09:41:02,255 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2021-11-09 09:41:02,255 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 679 transitions. [2021-11-09 09:41:02,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 679 transitions. [2021-11-09 09:41:02,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:41:02,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 679 transitions. [2021-11-09 09:41:02,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2021-11-09 09:41:02,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 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) [2021-11-09 09:41:02,264 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 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) [2021-11-09 09:41:02,264 INFO L186 Difference]: Start difference. First operand has 126 places, 125 transitions, 367 flow. Second operand 7 states and 679 transitions. [2021-11-09 09:41:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 157 transitions, 551 flow [2021-11-09 09:41:02,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 157 transitions, 533 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-11-09 09:41:02,279 INFO L242 Difference]: Finished difference. Result has 127 places, 150 transitions, 481 flow [2021-11-09 09:41:02,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=127, PETRI_TRANSITIONS=150} [2021-11-09 09:41:02,280 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 12 predicate places. [2021-11-09 09:41:02,281 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 150 transitions, 481 flow [2021-11-09 09:41:02,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 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) [2021-11-09 09:41:02,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:41:02,282 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:02,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:41:02,283 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:41:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:02,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1345309673, now seen corresponding path program 1 times [2021-11-09 09:41:02,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:02,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305083017] [2021-11-09 09:41:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:02,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:02,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:02,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305083017] [2021-11-09 09:41:02,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305083017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:02,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:02,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:02,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610615051] [2021-11-09 09:41:02,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:41:02,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:02,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:41:02,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:41:02,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 128 [2021-11-09 09:41:02,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 150 transitions, 481 flow. Second operand has 8 states, 8 states have (on average 93.5) internal successors, (748), 8 states have internal predecessors, (748), 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) [2021-11-09 09:41:02,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:41:02,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 128 [2021-11-09 09:41:02,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:41:02,921 INFO L129 PetriNetUnfolder]: 47/572 cut-off events. [2021-11-09 09:41:02,922 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2021-11-09 09:41:02,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 572 events. 47/572 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2942 event pairs, 13 based on Foata normal form. 24/594 useless extension candidates. Maximal degree in co-relation 1023. Up to 72 conditions per place. [2021-11-09 09:41:02,926 INFO L132 encePairwiseOnDemand]: 108/128 looper letters, 12 selfloop transitions, 25 changer transitions 16/154 dead transitions. [2021-11-09 09:41:02,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 154 transitions, 576 flow [2021-11-09 09:41:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:41:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-09 09:41:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1509 transitions. [2021-11-09 09:41:02,937 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.73681640625 [2021-11-09 09:41:02,937 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1509 transitions. [2021-11-09 09:41:02,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1509 transitions. [2021-11-09 09:41:02,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:41:02,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1509 transitions. [2021-11-09 09:41:02,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.3125) internal successors, (1509), 16 states have internal predecessors, (1509), 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) [2021-11-09 09:41:02,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 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) [2021-11-09 09:41:02,955 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 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) [2021-11-09 09:41:02,956 INFO L186 Difference]: Start difference. First operand has 127 places, 150 transitions, 481 flow. Second operand 16 states and 1509 transitions. [2021-11-09 09:41:02,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 154 transitions, 576 flow [2021-11-09 09:41:02,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 154 transitions, 569 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-09 09:41:02,965 INFO L242 Difference]: Finished difference. Result has 138 places, 138 transitions, 505 flow [2021-11-09 09:41:02,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=505, PETRI_PLACES=138, PETRI_TRANSITIONS=138} [2021-11-09 09:41:02,966 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 23 predicate places. [2021-11-09 09:41:02,966 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 138 transitions, 505 flow [2021-11-09 09:41:02,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 93.5) internal successors, (748), 8 states have internal predecessors, (748), 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) [2021-11-09 09:41:02,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:41:02,968 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:02,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:41:02,968 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:41:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1901781090, now seen corresponding path program 1 times [2021-11-09 09:41:02,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:02,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468581133] [2021-11-09 09:41:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:02,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:03,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:03,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468581133] [2021-11-09 09:41:03,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468581133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:03,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:03,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:41:03,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515305293] [2021-11-09 09:41:03,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:41:03,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:03,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:41:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:41:03,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 128 [2021-11-09 09:41:03,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 138 transitions, 505 flow. Second operand has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:03,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:41:03,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 128 [2021-11-09 09:41:03,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:41:03,358 INFO L129 PetriNetUnfolder]: 31/530 cut-off events. [2021-11-09 09:41:03,358 INFO L130 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2021-11-09 09:41:03,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 530 events. 31/530 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2693 event pairs, 1 based on Foata normal form. 3/533 useless extension candidates. Maximal degree in co-relation 1078. Up to 60 conditions per place. [2021-11-09 09:41:03,362 INFO L132 encePairwiseOnDemand]: 116/128 looper letters, 25 selfloop transitions, 19 changer transitions 7/158 dead transitions. [2021-11-09 09:41:03,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 158 transitions, 695 flow [2021-11-09 09:41:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:41:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-09 09:41:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 803 transitions. [2021-11-09 09:41:03,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7841796875 [2021-11-09 09:41:03,368 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 803 transitions. [2021-11-09 09:41:03,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 803 transitions. [2021-11-09 09:41:03,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:41:03,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 803 transitions. [2021-11-09 09:41:03,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.375) internal successors, (803), 8 states have internal predecessors, (803), 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) [2021-11-09 09:41:03,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:03,381 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:03,381 INFO L186 Difference]: Start difference. First operand has 138 places, 138 transitions, 505 flow. Second operand 8 states and 803 transitions. [2021-11-09 09:41:03,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 158 transitions, 695 flow [2021-11-09 09:41:03,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 158 transitions, 628 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-11-09 09:41:03,395 INFO L242 Difference]: Finished difference. Result has 136 places, 143 transitions, 533 flow [2021-11-09 09:41:03,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=533, PETRI_PLACES=136, PETRI_TRANSITIONS=143} [2021-11-09 09:41:03,397 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 21 predicate places. [2021-11-09 09:41:03,397 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 143 transitions, 533 flow [2021-11-09 09:41:03,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:03,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:41:03,398 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] [2021-11-09 09:41:03,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:41:03,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:41:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash 553908608, now seen corresponding path program 1 times [2021-11-09 09:41:03,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:03,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954904780] [2021-11-09 09:41:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:03,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:04,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:04,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954904780] [2021-11-09 09:41:04,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954904780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:04,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:04,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:04,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864112280] [2021-11-09 09:41:04,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:41:04,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:41:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:41:04,034 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 128 [2021-11-09 09:41:04,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 143 transitions, 533 flow. Second operand has 8 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 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) [2021-11-09 09:41:04,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:41:04,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 128 [2021-11-09 09:41:04,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:41:04,521 INFO L129 PetriNetUnfolder]: 49/579 cut-off events. [2021-11-09 09:41:04,522 INFO L130 PetriNetUnfolder]: For 244/259 co-relation queries the response was YES. [2021-11-09 09:41:04,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 579 events. 49/579 cut-off events. For 244/259 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3020 event pairs, 10 based on Foata normal form. 15/594 useless extension candidates. Maximal degree in co-relation 1183. Up to 69 conditions per place. [2021-11-09 09:41:04,527 INFO L132 encePairwiseOnDemand]: 105/128 looper letters, 33 selfloop transitions, 44 changer transitions 7/160 dead transitions. [2021-11-09 09:41:04,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 160 transitions, 755 flow [2021-11-09 09:41:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:41:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-09 09:41:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 657 transitions. [2021-11-09 09:41:04,532 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6416015625 [2021-11-09 09:41:04,532 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 657 transitions. [2021-11-09 09:41:04,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 657 transitions. [2021-11-09 09:41:04,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:41:04,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 657 transitions. [2021-11-09 09:41:04,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.125) internal successors, (657), 8 states have internal predecessors, (657), 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) [2021-11-09 09:41:04,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:04,541 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:04,541 INFO L186 Difference]: Start difference. First operand has 136 places, 143 transitions, 533 flow. Second operand 8 states and 657 transitions. [2021-11-09 09:41:04,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 160 transitions, 755 flow [2021-11-09 09:41:04,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 160 transitions, 752 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-09 09:41:04,552 INFO L242 Difference]: Finished difference. Result has 141 places, 145 transitions, 620 flow [2021-11-09 09:41:04,552 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=620, PETRI_PLACES=141, PETRI_TRANSITIONS=145} [2021-11-09 09:41:04,553 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 26 predicate places. [2021-11-09 09:41:04,553 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 145 transitions, 620 flow [2021-11-09 09:41:04,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 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) [2021-11-09 09:41:04,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:41:04,554 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] [2021-11-09 09:41:04,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:41:04,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:41:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:04,556 INFO L85 PathProgramCache]: Analyzing trace with hash 492883834, now seen corresponding path program 2 times [2021-11-09 09:41:04,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:04,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39599164] [2021-11-09 09:41:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:04,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:04,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:04,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39599164] [2021-11-09 09:41:04,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39599164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:04,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:04,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:04,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250156337] [2021-11-09 09:41:04,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:41:04,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:41:04,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:41:04,955 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 128 [2021-11-09 09:41:04,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 145 transitions, 620 flow. Second operand has 8 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 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) [2021-11-09 09:41:04,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:41:04,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 128 [2021-11-09 09:41:04,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:41:05,303 INFO L129 PetriNetUnfolder]: 34/436 cut-off events. [2021-11-09 09:41:05,303 INFO L130 PetriNetUnfolder]: For 301/315 co-relation queries the response was YES. [2021-11-09 09:41:05,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 436 events. 34/436 cut-off events. For 301/315 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1992 event pairs, 5 based on Foata normal form. 14/449 useless extension candidates. Maximal degree in co-relation 1010. Up to 84 conditions per place. [2021-11-09 09:41:05,309 INFO L132 encePairwiseOnDemand]: 116/128 looper letters, 67 selfloop transitions, 14 changer transitions 11/149 dead transitions. [2021-11-09 09:41:05,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 149 transitions, 805 flow [2021-11-09 09:41:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:41:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 09:41:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 576 transitions. [2021-11-09 09:41:05,314 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2021-11-09 09:41:05,314 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 576 transitions. [2021-11-09 09:41:05,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 576 transitions. [2021-11-09 09:41:05,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:41:05,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 576 transitions. [2021-11-09 09:41:05,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.28571428571429) internal successors, (576), 7 states have internal predecessors, (576), 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) [2021-11-09 09:41:05,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 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) [2021-11-09 09:41:05,324 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 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) [2021-11-09 09:41:05,324 INFO L186 Difference]: Start difference. First operand has 141 places, 145 transitions, 620 flow. Second operand 7 states and 576 transitions. [2021-11-09 09:41:05,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 149 transitions, 805 flow [2021-11-09 09:41:05,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 149 transitions, 776 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-09 09:41:05,334 INFO L242 Difference]: Finished difference. Result has 130 places, 118 transitions, 497 flow [2021-11-09 09:41:05,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=497, PETRI_PLACES=130, PETRI_TRANSITIONS=118} [2021-11-09 09:41:05,335 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 15 predicate places. [2021-11-09 09:41:05,335 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 497 flow [2021-11-09 09:41:05,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 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) [2021-11-09 09:41:05,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:41:05,337 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] [2021-11-09 09:41:05,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:41:05,338 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:41:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1290518034, now seen corresponding path program 1 times [2021-11-09 09:41:05,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:05,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608212521] [2021-11-09 09:41:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:05,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:05,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:05,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608212521] [2021-11-09 09:41:05,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608212521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:05,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:05,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:05,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848127723] [2021-11-09 09:41:05,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:41:05,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:05,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:41:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:41:05,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 128 [2021-11-09 09:41:05,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 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) [2021-11-09 09:41:05,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:41:05,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 128 [2021-11-09 09:41:05,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:41:05,862 INFO L129 PetriNetUnfolder]: 15/274 cut-off events. [2021-11-09 09:41:05,862 INFO L130 PetriNetUnfolder]: For 258/271 co-relation queries the response was YES. [2021-11-09 09:41:05,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 274 events. 15/274 cut-off events. For 258/271 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 907 event pairs, 0 based on Foata normal form. 18/292 useless extension candidates. Maximal degree in co-relation 668. Up to 56 conditions per place. [2021-11-09 09:41:05,865 INFO L132 encePairwiseOnDemand]: 122/128 looper letters, 55 selfloop transitions, 8 changer transitions 2/120 dead transitions. [2021-11-09 09:41:05,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 120 transitions, 643 flow [2021-11-09 09:41:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:41:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-09 09:41:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 484 transitions. [2021-11-09 09:41:05,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2021-11-09 09:41:05,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 484 transitions. [2021-11-09 09:41:05,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 484 transitions. [2021-11-09 09:41:05,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:41:05,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 484 transitions. [2021-11-09 09:41:05,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 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) [2021-11-09 09:41:05,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 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) [2021-11-09 09:41:05,876 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 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) [2021-11-09 09:41:05,876 INFO L186 Difference]: Start difference. First operand has 130 places, 118 transitions, 497 flow. Second operand 6 states and 484 transitions. [2021-11-09 09:41:05,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 120 transitions, 643 flow [2021-11-09 09:41:05,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 586 flow, removed 5 selfloop flow, removed 11 redundant places. [2021-11-09 09:41:05,884 INFO L242 Difference]: Finished difference. Result has 118 places, 115 transitions, 444 flow [2021-11-09 09:41:05,884 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=118, PETRI_TRANSITIONS=115} [2021-11-09 09:41:05,885 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 3 predicate places. [2021-11-09 09:41:05,885 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 115 transitions, 444 flow [2021-11-09 09:41:05,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 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) [2021-11-09 09:41:05,886 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:41:05,886 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] [2021-11-09 09:41:05,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:41:05,887 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:41:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:05,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1854827831, now seen corresponding path program 1 times [2021-11-09 09:41:05,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:05,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871662602] [2021-11-09 09:41:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:05,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:06,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:06,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871662602] [2021-11-09 09:41:06,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871662602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:06,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:06,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:06,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383026892] [2021-11-09 09:41:06,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:41:06,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:41:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:41:06,100 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 128 [2021-11-09 09:41:06,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 444 flow. Second operand has 8 states, 8 states have (on average 94.5) internal successors, (756), 8 states have internal predecessors, (756), 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) [2021-11-09 09:41:06,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:41:06,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 128 [2021-11-09 09:41:06,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:41:06,323 INFO L129 PetriNetUnfolder]: 10/196 cut-off events. [2021-11-09 09:41:06,323 INFO L130 PetriNetUnfolder]: For 87/89 co-relation queries the response was YES. [2021-11-09 09:41:06,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 196 events. 10/196 cut-off events. For 87/89 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 445 event pairs, 0 based on Foata normal form. 4/200 useless extension candidates. Maximal degree in co-relation 381. Up to 23 conditions per place. [2021-11-09 09:41:06,324 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2021-11-09 09:41:06,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 122 transitions, 522 flow [2021-11-09 09:41:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:41:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-09 09:41:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1502 transitions. [2021-11-09 09:41:06,333 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7333984375 [2021-11-09 09:41:06,334 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1502 transitions. [2021-11-09 09:41:06,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1502 transitions. [2021-11-09 09:41:06,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:41:06,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1502 transitions. [2021-11-09 09:41:06,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 93.875) internal successors, (1502), 16 states have internal predecessors, (1502), 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) [2021-11-09 09:41:06,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 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) [2021-11-09 09:41:06,352 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 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) [2021-11-09 09:41:06,353 INFO L186 Difference]: Start difference. First operand has 118 places, 115 transitions, 444 flow. Second operand 16 states and 1502 transitions. [2021-11-09 09:41:06,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 122 transitions, 522 flow [2021-11-09 09:41:06,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 122 transitions, 508 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-11-09 09:41:06,365 INFO L242 Difference]: Finished difference. Result has 126 places, 0 transitions, 0 flow [2021-11-09 09:41:06,365 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=126, PETRI_TRANSITIONS=0} [2021-11-09 09:41:06,366 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 11 predicate places. [2021-11-09 09:41:06,366 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 0 transitions, 0 flow [2021-11-09 09:41:06,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.5) internal successors, (756), 8 states have internal predecessors, (756), 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) [2021-11-09 09:41:06,370 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:41:06,370 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:41:06,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:41:06,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:41:06,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-09 09:41:06,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:41:06,376 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:06,381 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-09 09:41:06,381 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:41:06,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:41:06 BasicIcfg [2021-11-09 09:41:06,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:41:06,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:41:06,387 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:41:06,387 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:41:06,387 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:40:59" (3/4) ... [2021-11-09 09:41:06,391 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 09:41:06,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-11-09 09:41:06,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-09 09:41:06,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 09:41:06,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:41:06,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:41:06,486 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:41:06,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:41:06,488 INFO L168 Benchmark]: Toolchain (without parser) took 8214.98 ms. Allocated memory was 113.2 MB in the beginning and 180.4 MB in the end (delta: 67.1 MB). Free memory was 81.4 MB in the beginning and 114.3 MB in the end (delta: -33.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:41:06,489 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 113.2 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:41:06,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.23 ms. Allocated memory is still 113.2 MB. Free memory was 81.1 MB in the beginning and 78.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:41:06,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.31 ms. Allocated memory is still 113.2 MB. Free memory was 78.3 MB in the beginning and 76.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:41:06,491 INFO L168 Benchmark]: Boogie Preprocessor took 51.34 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 74.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:41:06,492 INFO L168 Benchmark]: RCFGBuilder took 742.58 ms. Allocated memory is still 113.2 MB. Free memory was 74.8 MB in the beginning and 60.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:41:06,492 INFO L168 Benchmark]: TraceAbstraction took 6446.47 ms. Allocated memory was 113.2 MB in the beginning and 180.4 MB in the end (delta: 67.1 MB). Free memory was 60.1 MB in the beginning and 118.5 MB in the end (delta: -58.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-11-09 09:41:06,493 INFO L168 Benchmark]: Witness Printer took 100.00 ms. Allocated memory is still 180.4 MB. Free memory was 117.5 MB in the beginning and 114.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:41:06,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 113.2 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 763.23 ms. Allocated memory is still 113.2 MB. Free memory was 81.1 MB in the beginning and 78.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.31 ms. Allocated memory is still 113.2 MB. Free memory was 78.3 MB in the beginning and 76.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.34 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 74.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 742.58 ms. Allocated memory is still 113.2 MB. Free memory was 74.8 MB in the beginning and 60.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6446.47 ms. Allocated memory was 113.2 MB in the beginning and 180.4 MB in the end (delta: 67.1 MB). Free memory was 60.1 MB in the beginning and 118.5 MB in the end (delta: -58.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 100.00 ms. Allocated memory is still 180.4 MB. Free memory was 117.5 MB in the beginning and 114.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 160 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 320 SDslu, 245 SDs, 0 SdLazy, 839 SolverSat, 332 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 20 SyntacticMatches, 14 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=620occurred in iteration=5, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 552 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 544 ConstructedInterpolants, 0 QuantifiedInterpolants, 3856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-09 09:41:06,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e780f44a-1743-4045-89bb-0c334f5c943d/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE