./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF --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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:31:51,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:31:51,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:31:51,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:31:51,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:31:51,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:31:51,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:31:51,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:31:51,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:31:51,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:31:51,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:31:51,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:31:51,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:31:51,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:31:51,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:31:51,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:31:51,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:31:51,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:31:51,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:31:51,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:31:51,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:31:51,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:31:51,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:31:51,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:31:51,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:31:51,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:31:51,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:31:51,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:31:51,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:31:51,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:31:51,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:31:51,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:31:51,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:31:51,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:31:51,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:31:51,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:31:51,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:31:51,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:31:51,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:31:51,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:31:51,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:31:51,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:31:52,027 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:31:52,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:31:52,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:31:52,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:31:52,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:31:52,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:31:52,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:31:52,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:31:52,038 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:31:52,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:31:52,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:31:52,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:31:52,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:31:52,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:31:52,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:31:52,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:31:52,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:31:52,041 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:31:52,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:31:52,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:31:52,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:31:52,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:31:52,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:31:52,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:31:52,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:31:52,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:31:52,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:31:52,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:31:52,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:31:52,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:31:52,045 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:31:52,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:31:52,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:31:52,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:31:52,046 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_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2021-11-20 05:31:52,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:31:52,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:31:52,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:31:52,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:31:52,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:31:52,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-11-20 05:31:52,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/data/4a8e0311e/5563ffcce89c4c35af878e0cf1ae063d/FLAGf0f7d658d [2021-11-20 05:31:52,910 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:31:52,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-11-20 05:31:52,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/data/4a8e0311e/5563ffcce89c4c35af878e0cf1ae063d/FLAGf0f7d658d [2021-11-20 05:31:53,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/data/4a8e0311e/5563ffcce89c4c35af878e0cf1ae063d [2021-11-20 05:31:53,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:31:53,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:31:53,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:31:53,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:31:53,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:31:53,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c50775b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53, skipping insertion in model container [2021-11-20 05:31:53,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:31:53,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:31:53,543 WARN L230 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_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2021-11-20 05:31:53,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:31:53,555 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:31:53,582 WARN L230 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_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2021-11-20 05:31:53,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:31:53,598 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:31:53,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53 WrapperNode [2021-11-20 05:31:53,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:31:53,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:31:53,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:31:53,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:31:53,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,646 INFO L137 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2021-11-20 05:31:53,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:31:53,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:31:53,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:31:53,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:31:53,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:31:53,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:31:53,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:31:53,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:31:53,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:31:53,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:31:53,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:31:53,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:31:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:31:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 05:31:53,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 05:31:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 05:31:53,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 05:31:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-20 05:31:53,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-20 05:31:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-20 05:31:53,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-20 05:31:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:31:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:31:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:31:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 05:31:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 05:31:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:31:53,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:31:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:31:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:31:53,773 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 05:31:53,877 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:31:53,879 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:31:54,273 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:31:54,426 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:31:54,426 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:31:54,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:31:54 BoogieIcfgContainer [2021-11-20 05:31:54,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:31:54,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:31:54,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:31:54,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:31:54,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:31:53" (1/3) ... [2021-11-20 05:31:54,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589e1656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:31:54, skipping insertion in model container [2021-11-20 05:31:54,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53" (2/3) ... [2021-11-20 05:31:54,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589e1656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:31:54, skipping insertion in model container [2021-11-20 05:31:54,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:31:54" (3/3) ... [2021-11-20 05:31:54,449 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2021-11-20 05:31:54,458 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 05:31:54,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:31:54,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:31:54,459 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 05:31:54,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,541 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,541 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,542 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,542 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,542 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,542 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,545 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,555 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,555 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,555 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,555 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,556 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,557 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,561 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,561 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,562 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,562 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,562 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,563 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,567 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:31:54,575 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-20 05:31:54,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:31:54,634 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 [2021-11-20 05:31:54,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-20 05:31:54,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 153 places, 142 transitions, 316 flow [2021-11-20 05:31:54,758 INFO L129 PetriNetUnfolder]: 2/138 cut-off events. [2021-11-20 05:31:54,758 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-20 05:31:54,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 2/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-11-20 05:31:54,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 142 transitions, 316 flow [2021-11-20 05:31:54,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 274 flow [2021-11-20 05:31:54,825 INFO L129 PetriNetUnfolder]: 2/124 cut-off events. [2021-11-20 05:31:54,827 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-20 05:31:54,828 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:31:54,829 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:31:54,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:31:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:31:54,842 INFO L85 PathProgramCache]: Analyzing trace with hash 371553834, now seen corresponding path program 1 times [2021-11-20 05:31:54,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:31:54,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447927797] [2021-11-20 05:31:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:54,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:31:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:31:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:31:55,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:31:55,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447927797] [2021-11-20 05:31:55,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447927797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:31:55,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:31:55,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:31:55,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942596065] [2021-11-20 05:31:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:31:55,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:31:55,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:31:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:31:55,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:31:55,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2021-11-20 05:31:55,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 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) [2021-11-20 05:31:55,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:31:55,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2021-11-20 05:31:55,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:31:57,489 INFO L129 PetriNetUnfolder]: 3366/5967 cut-off events. [2021-11-20 05:31:57,490 INFO L130 PetriNetUnfolder]: For 1096/1114 co-relation queries the response was YES. [2021-11-20 05:31:57,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11693 conditions, 5967 events. 3366/5967 cut-off events. For 1096/1114 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 40015 event pairs, 2346 based on Foata normal form. 3/5771 useless extension candidates. Maximal degree in co-relation 9336. Up to 2258 conditions per place. [2021-11-20 05:31:57,558 INFO L132 encePairwiseOnDemand]: 125/142 looper letters, 67 selfloop transitions, 13 changer transitions 12/176 dead transitions. [2021-11-20 05:31:57,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 176 transitions, 593 flow [2021-11-20 05:31:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:31:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:31:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1196 transitions. [2021-11-20 05:31:57,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765685019206146 [2021-11-20 05:31:57,586 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1196 transitions. [2021-11-20 05:31:57,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1196 transitions. [2021-11-20 05:31:57,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:31:57,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1196 transitions. [2021-11-20 05:31:57,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.72727272727273) internal successors, (1196), 11 states have internal predecessors, (1196), 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) [2021-11-20 05:31:57,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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) [2021-11-20 05:31:57,614 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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) [2021-11-20 05:31:57,616 INFO L186 Difference]: Start difference. First operand has 136 places, 125 transitions, 274 flow. Second operand 11 states and 1196 transitions. [2021-11-20 05:31:57,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 176 transitions, 593 flow [2021-11-20 05:31:57,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 176 transitions, 555 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-20 05:31:57,636 INFO L242 Difference]: Finished difference. Result has 143 places, 128 transitions, 325 flow [2021-11-20 05:31:57,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=325, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2021-11-20 05:31:57,644 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2021-11-20 05:31:57,644 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 325 flow [2021-11-20 05:31:57,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 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) [2021-11-20 05:31:57,646 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:31:57,646 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:31:57,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:31:57,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:31:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:31:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2033235304, now seen corresponding path program 2 times [2021-11-20 05:31:57,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:31:57,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487249371] [2021-11-20 05:31:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:57,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:31:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:31:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:31:58,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:31:58,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487249371] [2021-11-20 05:31:58,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487249371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:31:58,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:31:58,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:31:58,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99973516] [2021-11-20 05:31:58,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:31:58,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:31:58,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:31:58,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:31:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:31:58,380 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2021-11-20 05:31:58,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 325 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 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) [2021-11-20 05:31:58,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:31:58,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2021-11-20 05:31:58,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:31:59,632 INFO L129 PetriNetUnfolder]: 3250/6205 cut-off events. [2021-11-20 05:31:59,632 INFO L130 PetriNetUnfolder]: For 2143/2143 co-relation queries the response was YES. [2021-11-20 05:31:59,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13401 conditions, 6205 events. 3250/6205 cut-off events. For 2143/2143 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 45446 event pairs, 1474 based on Foata normal form. 1/6038 useless extension candidates. Maximal degree in co-relation 13388. Up to 2935 conditions per place. [2021-11-20 05:31:59,699 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 46 selfloop transitions, 11 changer transitions 37/178 dead transitions. [2021-11-20 05:31:59,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 178 transitions, 667 flow [2021-11-20 05:31:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:31:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:31:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1089 transitions. [2021-11-20 05:31:59,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7669014084507042 [2021-11-20 05:31:59,704 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1089 transitions. [2021-11-20 05:31:59,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1089 transitions. [2021-11-20 05:31:59,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:31:59,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1089 transitions. [2021-11-20 05:31:59,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.9) internal successors, (1089), 10 states have internal predecessors, (1089), 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) [2021-11-20 05:31:59,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:31:59,719 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:31:59,719 INFO L186 Difference]: Start difference. First operand has 143 places, 128 transitions, 325 flow. Second operand 10 states and 1089 transitions. [2021-11-20 05:31:59,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 178 transitions, 667 flow [2021-11-20 05:31:59,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 178 transitions, 642 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-11-20 05:31:59,734 INFO L242 Difference]: Finished difference. Result has 145 places, 131 transitions, 371 flow [2021-11-20 05:31:59,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=371, PETRI_PLACES=145, PETRI_TRANSITIONS=131} [2021-11-20 05:31:59,736 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 9 predicate places. [2021-11-20 05:31:59,736 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 131 transitions, 371 flow [2021-11-20 05:31:59,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 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) [2021-11-20 05:31:59,738 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:31:59,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:31:59,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:31:59,739 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:31:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:31:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1149982586, now seen corresponding path program 3 times [2021-11-20 05:31:59,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:31:59,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626534566] [2021-11-20 05:31:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:59,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:31:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:31:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:31:59,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:31:59,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626534566] [2021-11-20 05:31:59,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626534566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:31:59,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:31:59,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:31:59,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877263907] [2021-11-20 05:31:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:31:59,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:31:59,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:31:59,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:31:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:31:59,938 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:31:59,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 131 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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) [2021-11-20 05:31:59,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:31:59,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:31:59,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:00,767 INFO L129 PetriNetUnfolder]: 1979/4792 cut-off events. [2021-11-20 05:32:00,767 INFO L130 PetriNetUnfolder]: For 2245/2587 co-relation queries the response was YES. [2021-11-20 05:32:00,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9719 conditions, 4792 events. 1979/4792 cut-off events. For 2245/2587 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 41481 event pairs, 497 based on Foata normal form. 82/4664 useless extension candidates. Maximal degree in co-relation 9704. Up to 986 conditions per place. [2021-11-20 05:32:00,828 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 61 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2021-11-20 05:32:00,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 177 transitions, 636 flow [2021-11-20 05:32:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:32:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:32:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2021-11-20 05:32:00,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.806841046277666 [2021-11-20 05:32:00,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 802 transitions. [2021-11-20 05:32:00,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 802 transitions. [2021-11-20 05:32:00,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:00,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 802 transitions. [2021-11-20 05:32:00,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 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) [2021-11-20 05:32:00,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-11-20 05:32:00,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-11-20 05:32:00,839 INFO L186 Difference]: Start difference. First operand has 145 places, 131 transitions, 371 flow. Second operand 7 states and 802 transitions. [2021-11-20 05:32:00,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 177 transitions, 636 flow [2021-11-20 05:32:00,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 177 transitions, 597 flow, removed 12 selfloop flow, removed 8 redundant places. [2021-11-20 05:32:00,854 INFO L242 Difference]: Finished difference. Result has 141 places, 147 transitions, 440 flow [2021-11-20 05:32:00,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=141, PETRI_TRANSITIONS=147} [2021-11-20 05:32:00,856 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 5 predicate places. [2021-11-20 05:32:00,856 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 147 transitions, 440 flow [2021-11-20 05:32:00,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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) [2021-11-20 05:32:00,857 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:00,857 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:00,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:32:00,858 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:00,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:00,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1622267594, now seen corresponding path program 4 times [2021-11-20 05:32:00,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:00,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791167040] [2021-11-20 05:32:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:00,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:00,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791167040] [2021-11-20 05:32:00,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791167040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:00,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:00,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:32:00,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107880100] [2021-11-20 05:32:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:00,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:32:00,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:32:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:32:01,001 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:01,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 147 transitions, 440 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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) [2021-11-20 05:32:01,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:01,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:01,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:02,000 INFO L129 PetriNetUnfolder]: 2057/4980 cut-off events. [2021-11-20 05:32:02,000 INFO L130 PetriNetUnfolder]: For 3264/3614 co-relation queries the response was YES. [2021-11-20 05:32:02,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12315 conditions, 4980 events. 2057/4980 cut-off events. For 3264/3614 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 43642 event pairs, 344 based on Foata normal form. 195/4939 useless extension candidates. Maximal degree in co-relation 3550. Up to 1239 conditions per place. [2021-11-20 05:32:02,062 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 72 selfloop transitions, 54 changer transitions 2/225 dead transitions. [2021-11-20 05:32:02,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 225 transitions, 976 flow [2021-11-20 05:32:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:32:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-20 05:32:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 926 transitions. [2021-11-20 05:32:02,067 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8151408450704225 [2021-11-20 05:32:02,067 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 926 transitions. [2021-11-20 05:32:02,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 926 transitions. [2021-11-20 05:32:02,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:02,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 926 transitions. [2021-11-20 05:32:02,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 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) [2021-11-20 05:32:02,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-11-20 05:32:02,076 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-11-20 05:32:02,076 INFO L186 Difference]: Start difference. First operand has 141 places, 147 transitions, 440 flow. Second operand 8 states and 926 transitions. [2021-11-20 05:32:02,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 225 transitions, 976 flow [2021-11-20 05:32:02,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 225 transitions, 972 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 05:32:02,086 INFO L242 Difference]: Finished difference. Result has 149 places, 183 transitions, 807 flow [2021-11-20 05:32:02,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=807, PETRI_PLACES=149, PETRI_TRANSITIONS=183} [2021-11-20 05:32:02,088 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 13 predicate places. [2021-11-20 05:32:02,088 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 183 transitions, 807 flow [2021-11-20 05:32:02,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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) [2021-11-20 05:32:02,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:02,089 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:02,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:32:02,090 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:02,091 INFO L85 PathProgramCache]: Analyzing trace with hash -490818474, now seen corresponding path program 5 times [2021-11-20 05:32:02,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:02,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970886995] [2021-11-20 05:32:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:02,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:02,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:02,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970886995] [2021-11-20 05:32:02,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970886995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:02,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:02,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:32:02,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147437557] [2021-11-20 05:32:02,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:02,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:32:02,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:02,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:32:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:32:02,252 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:02,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 183 transitions, 807 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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) [2021-11-20 05:32:02,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:02,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:02,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:03,207 INFO L129 PetriNetUnfolder]: 2122/5058 cut-off events. [2021-11-20 05:32:03,207 INFO L130 PetriNetUnfolder]: For 10110/10653 co-relation queries the response was YES. [2021-11-20 05:32:03,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15866 conditions, 5058 events. 2122/5058 cut-off events. For 10110/10653 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 44323 event pairs, 315 based on Foata normal form. 212/5033 useless extension candidates. Maximal degree in co-relation 10393. Up to 1279 conditions per place. [2021-11-20 05:32:03,284 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 70 selfloop transitions, 61 changer transitions 2/230 dead transitions. [2021-11-20 05:32:03,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 230 transitions, 1273 flow [2021-11-20 05:32:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:32:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-20 05:32:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 924 transitions. [2021-11-20 05:32:03,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8133802816901409 [2021-11-20 05:32:03,289 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 924 transitions. [2021-11-20 05:32:03,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 924 transitions. [2021-11-20 05:32:03,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:03,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 924 transitions. [2021-11-20 05:32:03,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.5) internal successors, (924), 8 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:03,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-11-20 05:32:03,298 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-11-20 05:32:03,298 INFO L186 Difference]: Start difference. First operand has 149 places, 183 transitions, 807 flow. Second operand 8 states and 924 transitions. [2021-11-20 05:32:03,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 230 transitions, 1273 flow [2021-11-20 05:32:03,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 230 transitions, 1259 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-11-20 05:32:03,317 INFO L242 Difference]: Finished difference. Result has 156 places, 191 transitions, 1023 flow [2021-11-20 05:32:03,318 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1023, PETRI_PLACES=156, PETRI_TRANSITIONS=191} [2021-11-20 05:32:03,319 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 20 predicate places. [2021-11-20 05:32:03,319 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 191 transitions, 1023 flow [2021-11-20 05:32:03,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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) [2021-11-20 05:32:03,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:03,321 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:03,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:32:03,321 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash -386234202, now seen corresponding path program 6 times [2021-11-20 05:32:03,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81283700] [2021-11-20 05:32:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:03,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:03,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:03,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81283700] [2021-11-20 05:32:03,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81283700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:03,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:03,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:32:03,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163391077] [2021-11-20 05:32:03,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:03,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:32:03,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:32:03,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:32:03,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:03,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 191 transitions, 1023 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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) [2021-11-20 05:32:03,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:03,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:03,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:04,259 INFO L129 PetriNetUnfolder]: 1949/4941 cut-off events. [2021-11-20 05:32:04,260 INFO L130 PetriNetUnfolder]: For 14523/15036 co-relation queries the response was YES. [2021-11-20 05:32:04,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17570 conditions, 4941 events. 1949/4941 cut-off events. For 14523/15036 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 44858 event pairs, 524 based on Foata normal form. 158/4862 useless extension candidates. Maximal degree in co-relation 11337. Up to 1187 conditions per place. [2021-11-20 05:32:04,324 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 82 selfloop transitions, 45 changer transitions 3/227 dead transitions. [2021-11-20 05:32:04,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 227 transitions, 1496 flow [2021-11-20 05:32:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:32:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:32:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2021-11-20 05:32:04,328 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8048289738430584 [2021-11-20 05:32:04,328 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2021-11-20 05:32:04,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2021-11-20 05:32:04,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:04,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2021-11-20 05:32:04,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:04,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-11-20 05:32:04,334 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-11-20 05:32:04,335 INFO L186 Difference]: Start difference. First operand has 156 places, 191 transitions, 1023 flow. Second operand 7 states and 800 transitions. [2021-11-20 05:32:04,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 227 transitions, 1496 flow [2021-11-20 05:32:04,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 227 transitions, 1400 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-20 05:32:04,358 INFO L242 Difference]: Finished difference. Result has 159 places, 198 transitions, 1145 flow [2021-11-20 05:32:04,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1145, PETRI_PLACES=159, PETRI_TRANSITIONS=198} [2021-11-20 05:32:04,359 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 23 predicate places. [2021-11-20 05:32:04,359 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 198 transitions, 1145 flow [2021-11-20 05:32:04,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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) [2021-11-20 05:32:04,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:04,360 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:04,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:32:04,361 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2001081552, now seen corresponding path program 7 times [2021-11-20 05:32:04,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:04,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720432064] [2021-11-20 05:32:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:04,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:04,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:04,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720432064] [2021-11-20 05:32:04,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720432064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:04,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:04,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:32:04,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826210480] [2021-11-20 05:32:04,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:04,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:32:04,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:04,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:32:04,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:32:04,464 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:04,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 198 transitions, 1145 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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) [2021-11-20 05:32:04,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:04,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:04,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:05,097 INFO L129 PetriNetUnfolder]: 1033/2941 cut-off events. [2021-11-20 05:32:05,097 INFO L130 PetriNetUnfolder]: For 10546/10936 co-relation queries the response was YES. [2021-11-20 05:32:05,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10727 conditions, 2941 events. 1033/2941 cut-off events. For 10546/10936 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 24226 event pairs, 199 based on Foata normal form. 178/3020 useless extension candidates. Maximal degree in co-relation 7915. Up to 716 conditions per place. [2021-11-20 05:32:05,130 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 79 selfloop transitions, 55 changer transitions 2/229 dead transitions. [2021-11-20 05:32:05,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 229 transitions, 1642 flow [2021-11-20 05:32:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:32:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:32:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 799 transitions. [2021-11-20 05:32:05,134 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8038229376257545 [2021-11-20 05:32:05,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 799 transitions. [2021-11-20 05:32:05,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 799 transitions. [2021-11-20 05:32:05,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:05,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 799 transitions. [2021-11-20 05:32:05,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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) [2021-11-20 05:32:05,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-11-20 05:32:05,141 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-11-20 05:32:05,142 INFO L186 Difference]: Start difference. First operand has 159 places, 198 transitions, 1145 flow. Second operand 7 states and 799 transitions. [2021-11-20 05:32:05,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 229 transitions, 1642 flow [2021-11-20 05:32:05,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 229 transitions, 1551 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-11-20 05:32:05,162 INFO L242 Difference]: Finished difference. Result has 159 places, 203 transitions, 1326 flow [2021-11-20 05:32:05,162 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1326, PETRI_PLACES=159, PETRI_TRANSITIONS=203} [2021-11-20 05:32:05,163 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 23 predicate places. [2021-11-20 05:32:05,164 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 203 transitions, 1326 flow [2021-11-20 05:32:05,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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) [2021-11-20 05:32:05,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:05,165 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:05,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:32:05,166 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:05,167 INFO L85 PathProgramCache]: Analyzing trace with hash -993440210, now seen corresponding path program 8 times [2021-11-20 05:32:05,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:05,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771610089] [2021-11-20 05:32:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:05,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:05,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771610089] [2021-11-20 05:32:05,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771610089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:05,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:05,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:32:05,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240399617] [2021-11-20 05:32:05,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:05,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:32:05,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:32:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:32:05,334 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:05,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 203 transitions, 1326 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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) [2021-11-20 05:32:05,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:05,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:05,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:05,931 INFO L129 PetriNetUnfolder]: 1027/2881 cut-off events. [2021-11-20 05:32:05,932 INFO L130 PetriNetUnfolder]: For 12744/13408 co-relation queries the response was YES. [2021-11-20 05:32:05,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11122 conditions, 2881 events. 1027/2881 cut-off events. For 12744/13408 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 23491 event pairs, 115 based on Foata normal form. 290/3052 useless extension candidates. Maximal degree in co-relation 8323. Up to 630 conditions per place. [2021-11-20 05:32:05,966 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 70 selfloop transitions, 81 changer transitions 2/246 dead transitions. [2021-11-20 05:32:05,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 246 transitions, 1849 flow [2021-11-20 05:32:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:32:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-20 05:32:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 923 transitions. [2021-11-20 05:32:05,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8125 [2021-11-20 05:32:05,971 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 923 transitions. [2021-11-20 05:32:05,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 923 transitions. [2021-11-20 05:32:05,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:05,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 923 transitions. [2021-11-20 05:32:05,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.375) internal successors, (923), 8 states have internal predecessors, (923), 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) [2021-11-20 05:32:05,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-11-20 05:32:05,980 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-11-20 05:32:05,980 INFO L186 Difference]: Start difference. First operand has 159 places, 203 transitions, 1326 flow. Second operand 8 states and 923 transitions. [2021-11-20 05:32:05,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 246 transitions, 1849 flow [2021-11-20 05:32:06,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 246 transitions, 1784 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 05:32:06,004 INFO L242 Difference]: Finished difference. Result has 163 places, 207 transitions, 1514 flow [2021-11-20 05:32:06,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1514, PETRI_PLACES=163, PETRI_TRANSITIONS=207} [2021-11-20 05:32:06,008 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 27 predicate places. [2021-11-20 05:32:06,008 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 207 transitions, 1514 flow [2021-11-20 05:32:06,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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) [2021-11-20 05:32:06,009 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:06,009 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:06,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:32:06,010 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:06,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:06,010 INFO L85 PathProgramCache]: Analyzing trace with hash 960248400, now seen corresponding path program 9 times [2021-11-20 05:32:06,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:06,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645905784] [2021-11-20 05:32:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:06,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:06,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:06,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645905784] [2021-11-20 05:32:06,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645905784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:06,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:06,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:32:06,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023312441] [2021-11-20 05:32:06,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:06,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:32:06,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:06,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:32:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:06,153 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:06,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 207 transitions, 1514 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:06,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:06,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:06,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:06,884 INFO L129 PetriNetUnfolder]: 1048/2957 cut-off events. [2021-11-20 05:32:06,884 INFO L130 PetriNetUnfolder]: For 16228/16998 co-relation queries the response was YES. [2021-11-20 05:32:06,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12079 conditions, 2957 events. 1048/2957 cut-off events. For 16228/16998 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 24540 event pairs, 121 based on Foata normal form. 318/3150 useless extension candidates. Maximal degree in co-relation 9129. Up to 622 conditions per place. [2021-11-20 05:32:06,923 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 81 selfloop transitions, 88 changer transitions 3/265 dead transitions. [2021-11-20 05:32:06,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 265 transitions, 2192 flow [2021-11-20 05:32:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:32:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1150 transitions. [2021-11-20 05:32:06,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8098591549295775 [2021-11-20 05:32:06,929 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1150 transitions. [2021-11-20 05:32:06,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1150 transitions. [2021-11-20 05:32:06,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:06,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1150 transitions. [2021-11-20 05:32:06,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 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) [2021-11-20 05:32:06,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:06,940 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:06,940 INFO L186 Difference]: Start difference. First operand has 163 places, 207 transitions, 1514 flow. Second operand 10 states and 1150 transitions. [2021-11-20 05:32:06,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 265 transitions, 2192 flow [2021-11-20 05:32:06,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 265 transitions, 2006 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-11-20 05:32:06,964 INFO L242 Difference]: Finished difference. Result has 167 places, 214 transitions, 1648 flow [2021-11-20 05:32:06,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1648, PETRI_PLACES=167, PETRI_TRANSITIONS=214} [2021-11-20 05:32:06,965 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 31 predicate places. [2021-11-20 05:32:06,966 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 214 transitions, 1648 flow [2021-11-20 05:32:06,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:06,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:06,967 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:06,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:32:06,967 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:06,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:06,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2006325722, now seen corresponding path program 10 times [2021-11-20 05:32:06,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:06,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086495370] [2021-11-20 05:32:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:06,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:07,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:07,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086495370] [2021-11-20 05:32:07,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086495370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:07,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:07,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:32:07,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996724135] [2021-11-20 05:32:07,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:07,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:32:07,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:07,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:32:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:07,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:07,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 214 transitions, 1648 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:07,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:07,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:07,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:07,888 INFO L129 PetriNetUnfolder]: 1018/2977 cut-off events. [2021-11-20 05:32:07,888 INFO L130 PetriNetUnfolder]: For 17989/18696 co-relation queries the response was YES. [2021-11-20 05:32:07,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12150 conditions, 2977 events. 1018/2977 cut-off events. For 17989/18696 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 25140 event pairs, 118 based on Foata normal form. 290/3143 useless extension candidates. Maximal degree in co-relation 7562. Up to 619 conditions per place. [2021-11-20 05:32:07,932 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 80 selfloop transitions, 102 changer transitions 8/283 dead transitions. [2021-11-20 05:32:07,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 283 transitions, 2551 flow [2021-11-20 05:32:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:32:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1153 transitions. [2021-11-20 05:32:07,938 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8119718309859155 [2021-11-20 05:32:07,938 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1153 transitions. [2021-11-20 05:32:07,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1153 transitions. [2021-11-20 05:32:07,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:07,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1153 transitions. [2021-11-20 05:32:07,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.3) internal successors, (1153), 10 states have internal predecessors, (1153), 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) [2021-11-20 05:32:07,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:07,949 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:07,949 INFO L186 Difference]: Start difference. First operand has 167 places, 214 transitions, 1648 flow. Second operand 10 states and 1153 transitions. [2021-11-20 05:32:07,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 283 transitions, 2551 flow [2021-11-20 05:32:07,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 283 transitions, 2337 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-11-20 05:32:07,981 INFO L242 Difference]: Finished difference. Result has 171 places, 228 transitions, 1898 flow [2021-11-20 05:32:07,983 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1898, PETRI_PLACES=171, PETRI_TRANSITIONS=228} [2021-11-20 05:32:07,985 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 35 predicate places. [2021-11-20 05:32:07,985 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 228 transitions, 1898 flow [2021-11-20 05:32:07,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:07,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:07,987 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:07,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:32:07,987 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:07,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1578845790, now seen corresponding path program 11 times [2021-11-20 05:32:07,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:07,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242492622] [2021-11-20 05:32:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:07,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:08,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:08,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242492622] [2021-11-20 05:32:08,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242492622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:08,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:08,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:32:08,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073147853] [2021-11-20 05:32:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:08,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:32:08,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:08,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:32:08,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:08,127 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:08,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 228 transitions, 1898 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:08,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:08,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:08,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:08,737 INFO L129 PetriNetUnfolder]: 651/2120 cut-off events. [2021-11-20 05:32:08,737 INFO L130 PetriNetUnfolder]: For 13229/13922 co-relation queries the response was YES. [2021-11-20 05:32:08,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9281 conditions, 2120 events. 651/2120 cut-off events. For 13229/13922 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17133 event pairs, 63 based on Foata normal form. 382/2433 useless extension candidates. Maximal degree in co-relation 7210. Up to 471 conditions per place. [2021-11-20 05:32:08,757 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 76 selfloop transitions, 111 changer transitions 23/303 dead transitions. [2021-11-20 05:32:08,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 303 transitions, 3032 flow [2021-11-20 05:32:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:32:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1146 transitions. [2021-11-20 05:32:08,763 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8070422535211268 [2021-11-20 05:32:08,764 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1146 transitions. [2021-11-20 05:32:08,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1146 transitions. [2021-11-20 05:32:08,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:08,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1146 transitions. [2021-11-20 05:32:08,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.6) internal successors, (1146), 10 states have internal predecessors, (1146), 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) [2021-11-20 05:32:08,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:08,775 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:08,775 INFO L186 Difference]: Start difference. First operand has 171 places, 228 transitions, 1898 flow. Second operand 10 states and 1146 transitions. [2021-11-20 05:32:08,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 303 transitions, 3032 flow [2021-11-20 05:32:08,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 303 transitions, 2987 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 05:32:08,810 INFO L242 Difference]: Finished difference. Result has 178 places, 236 transitions, 2260 flow [2021-11-20 05:32:08,810 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1839, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2260, PETRI_PLACES=178, PETRI_TRANSITIONS=236} [2021-11-20 05:32:08,811 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 42 predicate places. [2021-11-20 05:32:08,811 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 236 transitions, 2260 flow [2021-11-20 05:32:08,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:08,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:08,812 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:08,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 05:32:08,813 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1829743562, now seen corresponding path program 12 times [2021-11-20 05:32:08,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:08,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244386812] [2021-11-20 05:32:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:08,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:08,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:08,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244386812] [2021-11-20 05:32:08,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244386812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:08,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:08,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:32:08,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508649988] [2021-11-20 05:32:08,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:08,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:32:08,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:32:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:08,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:08,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 236 transitions, 2260 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:08,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:08,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:08,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:09,556 INFO L129 PetriNetUnfolder]: 559/2010 cut-off events. [2021-11-20 05:32:09,556 INFO L130 PetriNetUnfolder]: For 13326/13749 co-relation queries the response was YES. [2021-11-20 05:32:09,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8691 conditions, 2010 events. 559/2010 cut-off events. For 13326/13749 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16279 event pairs, 54 based on Foata normal form. 178/2121 useless extension candidates. Maximal degree in co-relation 4502. Up to 400 conditions per place. [2021-11-20 05:32:09,581 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 58 selfloop transitions, 146 changer transitions 10/307 dead transitions. [2021-11-20 05:32:09,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 307 transitions, 3347 flow [2021-11-20 05:32:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:32:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1133 transitions. [2021-11-20 05:32:09,587 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.797887323943662 [2021-11-20 05:32:09,588 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1133 transitions. [2021-11-20 05:32:09,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1133 transitions. [2021-11-20 05:32:09,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:09,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1133 transitions. [2021-11-20 05:32:09,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.3) internal successors, (1133), 10 states have internal predecessors, (1133), 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) [2021-11-20 05:32:09,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:09,600 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:09,600 INFO L186 Difference]: Start difference. First operand has 178 places, 236 transitions, 2260 flow. Second operand 10 states and 1133 transitions. [2021-11-20 05:32:09,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 307 transitions, 3347 flow [2021-11-20 05:32:09,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 307 transitions, 3222 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-20 05:32:09,646 INFO L242 Difference]: Finished difference. Result has 183 places, 265 transitions, 2859 flow [2021-11-20 05:32:09,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2859, PETRI_PLACES=183, PETRI_TRANSITIONS=265} [2021-11-20 05:32:09,648 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 47 predicate places. [2021-11-20 05:32:09,649 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 265 transitions, 2859 flow [2021-11-20 05:32:09,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:09,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:09,658 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:09,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 05:32:09,659 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:09,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:09,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1709091710, now seen corresponding path program 13 times [2021-11-20 05:32:09,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:09,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279691333] [2021-11-20 05:32:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:09,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:09,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:09,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279691333] [2021-11-20 05:32:09,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279691333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:09,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:09,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:32:09,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795172495] [2021-11-20 05:32:09,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:09,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:32:09,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:32:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:09,872 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 142 [2021-11-20 05:32:09,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 265 transitions, 2859 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 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) [2021-11-20 05:32:09,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:09,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 142 [2021-11-20 05:32:09,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:10,741 INFO L129 PetriNetUnfolder]: 935/2660 cut-off events. [2021-11-20 05:32:10,741 INFO L130 PetriNetUnfolder]: For 19884/19884 co-relation queries the response was YES. [2021-11-20 05:32:10,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12968 conditions, 2660 events. 935/2660 cut-off events. For 19884/19884 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 21154 event pairs, 223 based on Foata normal form. 7/2593 useless extension candidates. Maximal degree in co-relation 6478. Up to 614 conditions per place. [2021-11-20 05:32:10,770 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 140 selfloop transitions, 132 changer transitions 26/376 dead transitions. [2021-11-20 05:32:10,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 376 transitions, 4520 flow [2021-11-20 05:32:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:32:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1075 transitions. [2021-11-20 05:32:10,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7570422535211268 [2021-11-20 05:32:10,774 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1075 transitions. [2021-11-20 05:32:10,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1075 transitions. [2021-11-20 05:32:10,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:10,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1075 transitions. [2021-11-20 05:32:10,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.5) internal successors, (1075), 10 states have internal predecessors, (1075), 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) [2021-11-20 05:32:10,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:10,782 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:10,782 INFO L186 Difference]: Start difference. First operand has 183 places, 265 transitions, 2859 flow. Second operand 10 states and 1075 transitions. [2021-11-20 05:32:10,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 376 transitions, 4520 flow [2021-11-20 05:32:10,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 376 transitions, 4325 flow, removed 35 selfloop flow, removed 5 redundant places. [2021-11-20 05:32:10,850 INFO L242 Difference]: Finished difference. Result has 192 places, 286 transitions, 3555 flow [2021-11-20 05:32:10,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3555, PETRI_PLACES=192, PETRI_TRANSITIONS=286} [2021-11-20 05:32:10,851 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 56 predicate places. [2021-11-20 05:32:10,851 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 286 transitions, 3555 flow [2021-11-20 05:32:10,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 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) [2021-11-20 05:32:10,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:10,852 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:10,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 05:32:10,852 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:10,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1615445542, now seen corresponding path program 14 times [2021-11-20 05:32:10,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:10,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54331805] [2021-11-20 05:32:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:10,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:10,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:10,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54331805] [2021-11-20 05:32:10,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54331805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:10,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:10,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:32:10,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329694071] [2021-11-20 05:32:10,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:10,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:32:10,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:10,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:32:10,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:32:11,001 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:11,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 286 transitions, 3555 flow. Second operand has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 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) [2021-11-20 05:32:11,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:11,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:11,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:11,576 INFO L129 PetriNetUnfolder]: 522/1909 cut-off events. [2021-11-20 05:32:11,576 INFO L130 PetriNetUnfolder]: For 19006/19476 co-relation queries the response was YES. [2021-11-20 05:32:11,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9242 conditions, 1909 events. 522/1909 cut-off events. For 19006/19476 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15337 event pairs, 60 based on Foata normal form. 211/2050 useless extension candidates. Maximal degree in co-relation 7072. Up to 352 conditions per place. [2021-11-20 05:32:11,597 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 67 selfloop transitions, 164 changer transitions 8/332 dead transitions. [2021-11-20 05:32:11,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 332 transitions, 4313 flow [2021-11-20 05:32:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:32:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:32:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1248 transitions. [2021-11-20 05:32:11,601 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7989756722151088 [2021-11-20 05:32:11,602 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1248 transitions. [2021-11-20 05:32:11,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1248 transitions. [2021-11-20 05:32:11,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:11,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1248 transitions. [2021-11-20 05:32:11,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.45454545454545) internal successors, (1248), 11 states have internal predecessors, (1248), 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) [2021-11-20 05:32:11,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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) [2021-11-20 05:32:11,610 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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) [2021-11-20 05:32:11,610 INFO L186 Difference]: Start difference. First operand has 192 places, 286 transitions, 3555 flow. Second operand 11 states and 1248 transitions. [2021-11-20 05:32:11,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 332 transitions, 4313 flow [2021-11-20 05:32:11,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 332 transitions, 4223 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-11-20 05:32:11,665 INFO L242 Difference]: Finished difference. Result has 199 places, 283 transitions, 3736 flow [2021-11-20 05:32:11,666 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3736, PETRI_PLACES=199, PETRI_TRANSITIONS=283} [2021-11-20 05:32:11,667 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 63 predicate places. [2021-11-20 05:32:11,667 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 283 transitions, 3736 flow [2021-11-20 05:32:11,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 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) [2021-11-20 05:32:11,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:11,668 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:11,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 05:32:11,668 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1260291086, now seen corresponding path program 15 times [2021-11-20 05:32:11,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:11,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676146680] [2021-11-20 05:32:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:11,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:11,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:11,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676146680] [2021-11-20 05:32:11,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676146680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:11,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:11,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 05:32:11,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702641937] [2021-11-20 05:32:11,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:11,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:32:11,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:32:11,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:32:11,797 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:11,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 283 transitions, 3736 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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) [2021-11-20 05:32:11,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:11,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:11,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:12,401 INFO L129 PetriNetUnfolder]: 517/1966 cut-off events. [2021-11-20 05:32:12,402 INFO L130 PetriNetUnfolder]: For 22625/23034 co-relation queries the response was YES. [2021-11-20 05:32:12,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9799 conditions, 1966 events. 517/1966 cut-off events. For 22625/23034 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16087 event pairs, 73 based on Foata normal form. 205/2102 useless extension candidates. Maximal degree in co-relation 5115. Up to 348 conditions per place. [2021-11-20 05:32:12,418 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 71 selfloop transitions, 169 changer transitions 10/343 dead transitions. [2021-11-20 05:32:12,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 343 transitions, 4731 flow [2021-11-20 05:32:12,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:32:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-20 05:32:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1571 transitions. [2021-11-20 05:32:12,422 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.790241448692153 [2021-11-20 05:32:12,422 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1571 transitions. [2021-11-20 05:32:12,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1571 transitions. [2021-11-20 05:32:12,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:12,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1571 transitions. [2021-11-20 05:32:12,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.21428571428571) internal successors, (1571), 14 states have internal predecessors, (1571), 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) [2021-11-20 05:32:12,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2021-11-20 05:32:12,430 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2021-11-20 05:32:12,431 INFO L186 Difference]: Start difference. First operand has 199 places, 283 transitions, 3736 flow. Second operand 14 states and 1571 transitions. [2021-11-20 05:32:12,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 343 transitions, 4731 flow [2021-11-20 05:32:12,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 343 transitions, 4545 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-11-20 05:32:12,493 INFO L242 Difference]: Finished difference. Result has 206 places, 288 transitions, 4009 flow [2021-11-20 05:32:12,494 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=3577, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4009, PETRI_PLACES=206, PETRI_TRANSITIONS=288} [2021-11-20 05:32:12,494 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 70 predicate places. [2021-11-20 05:32:12,494 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 288 transitions, 4009 flow [2021-11-20 05:32:12,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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) [2021-11-20 05:32:12,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:12,495 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:12,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 05:32:12,495 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1346029798, now seen corresponding path program 16 times [2021-11-20 05:32:12,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:12,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698111053] [2021-11-20 05:32:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:12,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:12,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:12,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698111053] [2021-11-20 05:32:12,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698111053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:12,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:12,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 05:32:12,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645632616] [2021-11-20 05:32:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:12,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:32:12,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:12,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:32:12,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:32:12,626 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:12,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 288 transitions, 4009 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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) [2021-11-20 05:32:12,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:12,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:12,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:13,224 INFO L129 PetriNetUnfolder]: 520/1974 cut-off events. [2021-11-20 05:32:13,225 INFO L130 PetriNetUnfolder]: For 24984/25440 co-relation queries the response was YES. [2021-11-20 05:32:13,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10250 conditions, 1974 events. 520/1974 cut-off events. For 24984/25440 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 16389 event pairs, 67 based on Foata normal form. 240/2140 useless extension candidates. Maximal degree in co-relation 8053. Up to 352 conditions per place. [2021-11-20 05:32:13,240 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 62 selfloop transitions, 145 changer transitions 54/354 dead transitions. [2021-11-20 05:32:13,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 354 transitions, 5162 flow [2021-11-20 05:32:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:32:13,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-20 05:32:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1574 transitions. [2021-11-20 05:32:13,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7917505030181087 [2021-11-20 05:32:13,244 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1574 transitions. [2021-11-20 05:32:13,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1574 transitions. [2021-11-20 05:32:13,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:13,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1574 transitions. [2021-11-20 05:32:13,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.42857142857143) internal successors, (1574), 14 states have internal predecessors, (1574), 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) [2021-11-20 05:32:13,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2021-11-20 05:32:13,253 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2021-11-20 05:32:13,253 INFO L186 Difference]: Start difference. First operand has 206 places, 288 transitions, 4009 flow. Second operand 14 states and 1574 transitions. [2021-11-20 05:32:13,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 354 transitions, 5162 flow [2021-11-20 05:32:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 354 transitions, 4897 flow, removed 2 selfloop flow, removed 9 redundant places. [2021-11-20 05:32:13,323 INFO L242 Difference]: Finished difference. Result has 212 places, 264 transitions, 3517 flow [2021-11-20 05:32:13,323 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=3764, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3517, PETRI_PLACES=212, PETRI_TRANSITIONS=264} [2021-11-20 05:32:13,324 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 76 predicate places. [2021-11-20 05:32:13,324 INFO L470 AbstractCegarLoop]: Abstraction has has 212 places, 264 transitions, 3517 flow [2021-11-20 05:32:13,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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) [2021-11-20 05:32:13,325 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:13,325 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:13,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 05:32:13,326 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:13,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:13,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1931359110, now seen corresponding path program 17 times [2021-11-20 05:32:13,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:13,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024282783] [2021-11-20 05:32:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:13,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:13,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:13,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024282783] [2021-11-20 05:32:13,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024282783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:13,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:13,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 05:32:13,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006180149] [2021-11-20 05:32:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:13,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:32:13,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:32:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:32:13,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:13,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 264 transitions, 3517 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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) [2021-11-20 05:32:13,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:13,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:13,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:14,012 INFO L129 PetriNetUnfolder]: 440/1745 cut-off events. [2021-11-20 05:32:14,012 INFO L130 PetriNetUnfolder]: For 23592/24034 co-relation queries the response was YES. [2021-11-20 05:32:14,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9120 conditions, 1745 events. 440/1745 cut-off events. For 23592/24034 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14101 event pairs, 63 based on Foata normal form. 217/1894 useless extension candidates. Maximal degree in co-relation 6897. Up to 324 conditions per place. [2021-11-20 05:32:14,025 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 66 selfloop transitions, 143 changer transitions 25/326 dead transitions. [2021-11-20 05:32:14,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 326 transitions, 4524 flow [2021-11-20 05:32:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:32:14,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-20 05:32:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1572 transitions. [2021-11-20 05:32:14,029 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7907444668008048 [2021-11-20 05:32:14,029 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1572 transitions. [2021-11-20 05:32:14,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1572 transitions. [2021-11-20 05:32:14,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:14,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1572 transitions. [2021-11-20 05:32:14,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.28571428571429) internal successors, (1572), 14 states have internal predecessors, (1572), 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) [2021-11-20 05:32:14,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2021-11-20 05:32:14,038 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2021-11-20 05:32:14,038 INFO L186 Difference]: Start difference. First operand has 212 places, 264 transitions, 3517 flow. Second operand 14 states and 1572 transitions. [2021-11-20 05:32:14,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 326 transitions, 4524 flow [2021-11-20 05:32:14,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 326 transitions, 4162 flow, removed 18 selfloop flow, removed 11 redundant places. [2021-11-20 05:32:14,102 INFO L242 Difference]: Finished difference. Result has 213 places, 260 transitions, 3392 flow [2021-11-20 05:32:14,103 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3392, PETRI_PLACES=213, PETRI_TRANSITIONS=260} [2021-11-20 05:32:14,104 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 77 predicate places. [2021-11-20 05:32:14,104 INFO L470 AbstractCegarLoop]: Abstraction has has 213 places, 260 transitions, 3392 flow [2021-11-20 05:32:14,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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) [2021-11-20 05:32:14,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:14,105 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:14,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 05:32:14,105 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:14,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:14,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1840719370, now seen corresponding path program 18 times [2021-11-20 05:32:14,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:14,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870953817] [2021-11-20 05:32:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:14,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:14,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:14,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870953817] [2021-11-20 05:32:14,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870953817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:14,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:14,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:32:14,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40165428] [2021-11-20 05:32:14,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:14,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:32:14,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:14,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:32:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:14,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:14,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 260 transitions, 3392 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:14,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:14,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:14,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:14,472 INFO L129 PetriNetUnfolder]: 79/502 cut-off events. [2021-11-20 05:32:14,473 INFO L130 PetriNetUnfolder]: For 5655/5794 co-relation queries the response was YES. [2021-11-20 05:32:14,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2763 conditions, 502 events. 79/502 cut-off events. For 5655/5794 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2667 event pairs, 4 based on Foata normal form. 109/607 useless extension candidates. Maximal degree in co-relation 1923. Up to 74 conditions per place. [2021-11-20 05:32:14,476 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 39 selfloop transitions, 26 changer transitions 55/210 dead transitions. [2021-11-20 05:32:14,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 210 transitions, 2410 flow [2021-11-20 05:32:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:32:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1112 transitions. [2021-11-20 05:32:14,479 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7830985915492957 [2021-11-20 05:32:14,479 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1112 transitions. [2021-11-20 05:32:14,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1112 transitions. [2021-11-20 05:32:14,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:14,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1112 transitions. [2021-11-20 05:32:14,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 111.2) internal successors, (1112), 10 states have internal predecessors, (1112), 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) [2021-11-20 05:32:14,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:14,485 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:14,485 INFO L186 Difference]: Start difference. First operand has 213 places, 260 transitions, 3392 flow. Second operand 10 states and 1112 transitions. [2021-11-20 05:32:14,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 210 transitions, 2410 flow [2021-11-20 05:32:14,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 210 transitions, 2246 flow, removed 15 selfloop flow, removed 11 redundant places. [2021-11-20 05:32:14,513 INFO L242 Difference]: Finished difference. Result has 211 places, 143 transitions, 871 flow [2021-11-20 05:32:14,513 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=871, PETRI_PLACES=211, PETRI_TRANSITIONS=143} [2021-11-20 05:32:14,514 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 75 predicate places. [2021-11-20 05:32:14,514 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 143 transitions, 871 flow [2021-11-20 05:32:14,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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) [2021-11-20 05:32:14,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:14,515 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:14,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 05:32:14,515 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash -21152240, now seen corresponding path program 19 times [2021-11-20 05:32:14,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:14,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846988629] [2021-11-20 05:32:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:14,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:14,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:14,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846988629] [2021-11-20 05:32:14,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846988629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:14,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:14,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:32:14,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983918494] [2021-11-20 05:32:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:14,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:32:14,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:32:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:32:14,637 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:14,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 143 transitions, 871 flow. Second operand has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 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) [2021-11-20 05:32:14,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:14,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:14,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:14,782 INFO L129 PetriNetUnfolder]: 18/204 cut-off events. [2021-11-20 05:32:14,782 INFO L130 PetriNetUnfolder]: For 1401/1408 co-relation queries the response was YES. [2021-11-20 05:32:14,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 204 events. 18/204 cut-off events. For 1401/1408 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 390 event pairs, 2 based on Foata normal form. 10/213 useless extension candidates. Maximal degree in co-relation 594. Up to 18 conditions per place. [2021-11-20 05:32:14,784 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 33 selfloop transitions, 18 changer transitions 10/151 dead transitions. [2021-11-20 05:32:14,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 151 transitions, 1005 flow [2021-11-20 05:32:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:32:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1089 transitions. [2021-11-20 05:32:14,786 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7669014084507042 [2021-11-20 05:32:14,787 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1089 transitions. [2021-11-20 05:32:14,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1089 transitions. [2021-11-20 05:32:14,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:14,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1089 transitions. [2021-11-20 05:32:14,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.9) internal successors, (1089), 10 states have internal predecessors, (1089), 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) [2021-11-20 05:32:14,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:14,792 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-11-20 05:32:14,792 INFO L186 Difference]: Start difference. First operand has 211 places, 143 transitions, 871 flow. Second operand 10 states and 1089 transitions. [2021-11-20 05:32:14,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 151 transitions, 1005 flow [2021-11-20 05:32:14,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 151 transitions, 649 flow, removed 29 selfloop flow, removed 43 redundant places. [2021-11-20 05:32:14,801 INFO L242 Difference]: Finished difference. Result has 166 places, 131 transitions, 445 flow [2021-11-20 05:32:14,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=166, PETRI_TRANSITIONS=131} [2021-11-20 05:32:14,802 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 30 predicate places. [2021-11-20 05:32:14,803 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 131 transitions, 445 flow [2021-11-20 05:32:14,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 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) [2021-11-20 05:32:14,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:32:14,804 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:14,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 05:32:14,804 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:32:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1446737916, now seen corresponding path program 20 times [2021-11-20 05:32:14,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:14,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370610997] [2021-11-20 05:32:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:14,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:14,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:14,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370610997] [2021-11-20 05:32:14,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370610997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:14,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:14,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 05:32:14,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423557049] [2021-11-20 05:32:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:14,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:32:14,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:32:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:32:14,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2021-11-20 05:32:14,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 131 transitions, 445 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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) [2021-11-20 05:32:14,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:32:14,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2021-11-20 05:32:14,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:32:15,073 INFO L129 PetriNetUnfolder]: 9/123 cut-off events. [2021-11-20 05:32:15,073 INFO L130 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2021-11-20 05:32:15,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 123 events. 9/123 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 127 event pairs, 0 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 281. Up to 8 conditions per place. [2021-11-20 05:32:15,074 INFO L132 encePairwiseOnDemand]: 132/142 looper letters, 0 selfloop transitions, 0 changer transitions 110/110 dead transitions. [2021-11-20 05:32:15,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 110 transitions, 450 flow [2021-11-20 05:32:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:32:15,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:32:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1170 transitions. [2021-11-20 05:32:15,077 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7490396927016645 [2021-11-20 05:32:15,077 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1170 transitions. [2021-11-20 05:32:15,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1170 transitions. [2021-11-20 05:32:15,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:15,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1170 transitions. [2021-11-20 05:32:15,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 106.36363636363636) internal successors, (1170), 11 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:15,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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) [2021-11-20 05:32:15,083 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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) [2021-11-20 05:32:15,083 INFO L186 Difference]: Start difference. First operand has 166 places, 131 transitions, 445 flow. Second operand 11 states and 1170 transitions. [2021-11-20 05:32:15,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 110 transitions, 450 flow [2021-11-20 05:32:15,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 110 transitions, 365 flow, removed 2 selfloop flow, removed 25 redundant places. [2021-11-20 05:32:15,086 INFO L242 Difference]: Finished difference. Result has 123 places, 0 transitions, 0 flow [2021-11-20 05:32:15,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=123, PETRI_TRANSITIONS=0} [2021-11-20 05:32:15,087 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, -13 predicate places. [2021-11-20 05:32:15,087 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 0 transitions, 0 flow [2021-11-20 05:32:15,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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) [2021-11-20 05:32:15,091 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-20 05:32:15,096 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-11-20 05:32:15,096 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-11-20 05:32:15,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-11-20 05:32:15,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-11-20 05:32:15,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 05:32:15,101 INFO L732 BasicCegarLoop]: Path program histogram: [20] [2021-11-20 05:32:15,104 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 05:32:15,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:32:15,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:32:15 BasicIcfg [2021-11-20 05:32:15,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:32:15,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:32:15,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:32:15,110 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:32:15,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:31:54" (3/4) ... [2021-11-20 05:32:15,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 05:32:15,120 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-20 05:32:15,120 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-20 05:32:15,120 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-20 05:32:15,121 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-11-20 05:32:15,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-11-20 05:32:15,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 05:32:15,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 05:32:15,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 05:32:15,175 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:32:15,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:32:15,179 INFO L158 Benchmark]: Toolchain (without parser) took 21872.76ms. Allocated memory was 100.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 63.4MB in the beginning and 561.3MB in the end (delta: -497.9MB). Peak memory consumption was 927.3MB. Max. memory is 16.1GB. [2021-11-20 05:32:15,179 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:32:15,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.78ms. Allocated memory is still 100.7MB. Free memory was 63.2MB in the beginning and 68.3MB in the end (delta: -5.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:32:15,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.10ms. Allocated memory is still 100.7MB. Free memory was 68.3MB in the beginning and 66.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:32:15,180 INFO L158 Benchmark]: Boogie Preprocessor took 30.30ms. Allocated memory is still 100.7MB. Free memory was 66.2MB in the beginning and 64.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:32:15,181 INFO L158 Benchmark]: RCFGBuilder took 749.83ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 64.7MB in the beginning and 98.1MB in the end (delta: -33.4MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2021-11-20 05:32:15,183 INFO L158 Benchmark]: TraceAbstraction took 20677.97ms. Allocated memory was 123.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 97.6MB in the beginning and 564.5MB in the end (delta: -466.8MB). Peak memory consumption was 935.8MB. Max. memory is 16.1GB. [2021-11-20 05:32:15,184 INFO L158 Benchmark]: Witness Printer took 68.71ms. Allocated memory is still 1.5GB. Free memory was 564.5MB in the beginning and 561.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 05:32:15,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.78ms. Allocated memory is still 100.7MB. Free memory was 63.2MB in the beginning and 68.3MB in the end (delta: -5.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.10ms. Allocated memory is still 100.7MB. Free memory was 68.3MB in the beginning and 66.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.30ms. Allocated memory is still 100.7MB. Free memory was 66.2MB in the beginning and 64.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 749.83ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 64.7MB in the beginning and 98.1MB in the end (delta: -33.4MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * TraceAbstraction took 20677.97ms. Allocated memory was 123.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 97.6MB in the beginning and 564.5MB in the end (delta: -466.8MB). Peak memory consumption was 935.8MB. Max. memory is 16.1GB. * Witness Printer took 68.71ms. Allocated memory is still 1.5GB. Free memory was 564.5MB in the beginning and 561.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 146]: 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 9 procedures, 174 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.5s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 15.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1201 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1201 mSDsluCounter, 906 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1796 mSDsCounter, 638 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4791 IncrementalHoareTripleChecker+Invalid, 5429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 638 mSolverCounterUnsat, 293 mSDtfsCounter, 4791 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4009occurred in iteration=15, InterpolantAutomatonStates: 200, 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: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 2420 NumberOfCodeBlocks, 2420 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2400 ConstructedInterpolants, 0 QuantifiedInterpolants, 6067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-20 05:32:15,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abf82fb-bb15-4e3c-a8a5-72e358d9fea1/bin/uautomizer-DQz5hQGWxF/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