./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:49:50,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:49:50,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:49:50,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:49:50,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:49:50,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:49:50,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:49:50,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:49:50,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:49:50,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:49:50,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:49:50,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:49:50,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:49:50,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:49:50,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:49:50,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:49:50,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:49:50,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:49:50,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:49:50,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:49:50,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:49:50,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:49:50,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:49:50,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:49:50,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:49:50,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:49:50,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:49:50,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:49:50,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:49:50,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:49:50,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:49:50,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:49:50,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:49:50,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:49:50,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:49:50,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:49:50,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:49:50,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:49:50,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:49:50,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:49:50,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:49:50,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:49:50,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:49:50,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:49:50,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:49:50,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:49:50,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:49:50,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:49:50,998 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:49:50,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:49:50,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:49:50,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:49:50,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:49:50,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:49:50,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:49:51,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:49:51,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:49:51,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:49:51,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:49:51,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:49:51,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:49:51,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:49:51,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:49:51,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:49:51,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:49:51,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:49:51,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:49:51,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:49:51,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:49:51,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:49:51,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:49:51,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:49:51,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:49:51,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:49:51,004 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_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2021-11-09 10:49:51,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:49:51,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:49:51,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:49:51,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:49:51,312 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:49:51,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2021-11-09 10:49:51,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/data/6403b7555/a182c7042fba46aaac10e2bb425dda4e/FLAG8a735034e [2021-11-09 10:49:51,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:49:51,874 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2021-11-09 10:49:51,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/data/6403b7555/a182c7042fba46aaac10e2bb425dda4e/FLAG8a735034e [2021-11-09 10:49:52,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/data/6403b7555/a182c7042fba46aaac10e2bb425dda4e [2021-11-09 10:49:52,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:49:52,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:49:52,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:49:52,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:49:52,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:49:52,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab7f262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52, skipping insertion in model container [2021-11-09 10:49:52,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:49:52,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:49:52,483 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2021-11-09 10:49:52,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:49:52,497 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:49:52,525 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2021-11-09 10:49:52,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:49:52,540 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:49:52,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52 WrapperNode [2021-11-09 10:49:52,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:49:52,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:49:52,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:49:52,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:49:52,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:49:52,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:49:52,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:49:52,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:49:52,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:49:52,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:49:52,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:49:52,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:49:52,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (1/1) ... [2021-11-09 10:49:52,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:49:52,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:49:52,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:49:52,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d61d1-c63d-4389-94e8-4c9b3cb8c304/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:49:52,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-09 10:49:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-09 10:49:52,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-09 10:49:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-09 10:49:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-09 10:49:52,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-09 10:49:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-09 10:49:52,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-09 10:49:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:49:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-11-09 10:49:52,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-11-09 10:49:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:49:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:49:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-09 10:49:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-09 10:49:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:49:52,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:49:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:49:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:49:52,695 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 10:49:53,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:49:53,341 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-09 10:49:53,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:49:53 BoogieIcfgContainer [2021-11-09 10:49:53,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:49:53,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:49:53,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:49:53,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:49:53,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:49:52" (1/3) ... [2021-11-09 10:49:53,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45553bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:49:53, skipping insertion in model container [2021-11-09 10:49:53,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:52" (2/3) ... [2021-11-09 10:49:53,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45553bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:49:53, skipping insertion in model container [2021-11-09 10:49:53,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:49:53" (3/3) ... [2021-11-09 10:49:53,355 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2021-11-09 10:49:53,361 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 10:49:53,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:49:53,362 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:49:53,362 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 10:49:53,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,418 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,418 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,421 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,421 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,427 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,428 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,428 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,431 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,431 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,431 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,432 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,432 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,432 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,435 WARN L322 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,435 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,435 WARN L322 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,435 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,440 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,441 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,441 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,441 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,441 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,441 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,444 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,446 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,447 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,447 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,447 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,447 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,447 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,455 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,457 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,460 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,460 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,461 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,463 WARN L322 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,463 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,463 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:49:53,491 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-11-09 10:49:53,612 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:49:53,622 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:49:53,623 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 10:49:53,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 171 places, 157 transitions, 354 flow [2021-11-09 10:49:53,731 INFO L129 PetriNetUnfolder]: 2/152 cut-off events. [2021-11-09 10:49:53,731 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-11-09 10:49:53,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 152 events. 2/152 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2021-11-09 10:49:53,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 157 transitions, 354 flow [2021-11-09 10:49:53,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 138 transitions, 306 flow [2021-11-09 10:49:53,832 INFO L129 PetriNetUnfolder]: 2/137 cut-off events. [2021-11-09 10:49:53,832 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-11-09 10:49:53,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:49:53,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:49:53,833 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:49:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1497475374, now seen corresponding path program 1 times [2021-11-09 10:49:53,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:49:53,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484835754] [2021-11-09 10:49:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:53,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:49:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:55,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:49:55,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484835754] [2021-11-09 10:49:55,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484835754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:49:55,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:49:55,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 10:49:55,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392436395] [2021-11-09 10:49:55,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:49:55,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:49:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:49:55,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:49:55,249 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 157 [2021-11-09 10:49:55,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 306 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:55,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:49:55,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 157 [2021-11-09 10:49:55,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:49:55,686 INFO L129 PetriNetUnfolder]: 122/581 cut-off events. [2021-11-09 10:49:55,686 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-11-09 10:49:55,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 581 events. 122/581 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3100 event pairs, 72 based on Foata normal form. 3/541 useless extension candidates. Maximal degree in co-relation 714. Up to 116 conditions per place. [2021-11-09 10:49:55,697 INFO L132 encePairwiseOnDemand]: 139/157 looper letters, 16 selfloop transitions, 15 changer transitions 7/154 dead transitions. [2021-11-09 10:49:55,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 154 transitions, 414 flow [2021-11-09 10:49:55,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:49:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-09 10:49:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1516 transitions. [2021-11-09 10:49:55,719 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778228141285466 [2021-11-09 10:49:55,719 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1516 transitions. [2021-11-09 10:49:55,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1516 transitions. [2021-11-09 10:49:55,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:49:55,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1516 transitions. [2021-11-09 10:49:55,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 137.8181818181818) internal successors, (1516), 11 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:55,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:55,749 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:55,751 INFO L186 Difference]: Start difference. First operand has 152 places, 138 transitions, 306 flow. Second operand 11 states and 1516 transitions. [2021-11-09 10:49:55,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 154 transitions, 414 flow [2021-11-09 10:49:55,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 154 transitions, 394 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-11-09 10:49:55,763 INFO L242 Difference]: Finished difference. Result has 157 places, 143 transitions, 368 flow [2021-11-09 10:49:55,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=368, PETRI_PLACES=157, PETRI_TRANSITIONS=143} [2021-11-09 10:49:55,767 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 5 predicate places. [2021-11-09 10:49:55,767 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 143 transitions, 368 flow [2021-11-09 10:49:55,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:55,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:49:55,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:49:55,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:49:55,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:49:55,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash -59168826, now seen corresponding path program 2 times [2021-11-09 10:49:55,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:49:55,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038473611] [2021-11-09 10:49:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:55,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:49:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:56,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:49:56,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038473611] [2021-11-09 10:49:56,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038473611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:49:56,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:49:56,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:49:56,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837733183] [2021-11-09 10:49:56,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:49:56,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:49:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:49:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:49:56,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:49:56,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 143 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:56,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:49:56,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:49:56,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:00,752 INFO L129 PetriNetUnfolder]: 11081/22819 cut-off events. [2021-11-09 10:50:00,752 INFO L130 PetriNetUnfolder]: For 2573/3714 co-relation queries the response was YES. [2021-11-09 10:50:00,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44306 conditions, 22819 events. 11081/22819 cut-off events. For 2573/3714 co-relation queries the response was YES. Maximal size of possible extension queue 1584. Compared 234391 event pairs, 3131 based on Foata normal form. 329/21832 useless extension candidates. Maximal degree in co-relation 44290. Up to 4674 conditions per place. [2021-11-09 10:50:01,169 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 52 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2021-11-09 10:50:01,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 189 transitions, 616 flow [2021-11-09 10:50:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:50:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 10:50:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 937 transitions. [2021-11-09 10:50:01,174 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8525932666060054 [2021-11-09 10:50:01,174 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 937 transitions. [2021-11-09 10:50:01,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 937 transitions. [2021-11-09 10:50:01,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:01,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 937 transitions. [2021-11-09 10:50:01,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:01,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:01,184 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:01,184 INFO L186 Difference]: Start difference. First operand has 157 places, 143 transitions, 368 flow. Second operand 7 states and 937 transitions. [2021-11-09 10:50:01,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 189 transitions, 616 flow [2021-11-09 10:50:01,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 189 transitions, 587 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-11-09 10:50:01,201 INFO L242 Difference]: Finished difference. Result has 153 places, 163 transitions, 478 flow [2021-11-09 10:50:01,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=153, PETRI_TRANSITIONS=163} [2021-11-09 10:50:01,202 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 1 predicate places. [2021-11-09 10:50:01,203 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 163 transitions, 478 flow [2021-11-09 10:50:01,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:01,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:01,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:01,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:50:01,205 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:01,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:01,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1685034066, now seen corresponding path program 3 times [2021-11-09 10:50:01,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:01,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104569453] [2021-11-09 10:50:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:01,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:01,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:01,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104569453] [2021-11-09 10:50:01,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104569453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:01,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:01,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 10:50:01,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746966397] [2021-11-09 10:50:01,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:50:01,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:50:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:50:01,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:50:01,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 163 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:01,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:01,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:50:01,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:05,303 INFO L129 PetriNetUnfolder]: 12749/25028 cut-off events. [2021-11-09 10:50:05,303 INFO L130 PetriNetUnfolder]: For 17000/59571 co-relation queries the response was YES. [2021-11-09 10:50:05,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65584 conditions, 25028 events. 12749/25028 cut-off events. For 17000/59571 co-relation queries the response was YES. Maximal size of possible extension queue 1721. Compared 249805 event pairs, 2273 based on Foata normal form. 820/24040 useless extension candidates. Maximal degree in co-relation 64617. Up to 5823 conditions per place. [2021-11-09 10:50:05,813 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 59 selfloop transitions, 70 changer transitions 0/243 dead transitions. [2021-11-09 10:50:05,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 243 transitions, 1040 flow [2021-11-09 10:50:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:50:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-09 10:50:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1075 transitions. [2021-11-09 10:50:05,818 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8558917197452229 [2021-11-09 10:50:05,818 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1075 transitions. [2021-11-09 10:50:05,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1075 transitions. [2021-11-09 10:50:05,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:05,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1075 transitions. [2021-11-09 10:50:05,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.375) internal successors, (1075), 8 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) [2021-11-09 10:50:05,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:05,827 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:05,828 INFO L186 Difference]: Start difference. First operand has 153 places, 163 transitions, 478 flow. Second operand 8 states and 1075 transitions. [2021-11-09 10:50:05,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 243 transitions, 1040 flow [2021-11-09 10:50:05,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 243 transitions, 1036 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 10:50:05,842 INFO L242 Difference]: Finished difference. Result has 161 places, 211 transitions, 965 flow [2021-11-09 10:50:05,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=965, PETRI_PLACES=161, PETRI_TRANSITIONS=211} [2021-11-09 10:50:05,843 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 9 predicate places. [2021-11-09 10:50:05,843 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 211 transitions, 965 flow [2021-11-09 10:50:05,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:05,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:05,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:05,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:50:05,845 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 282127512, now seen corresponding path program 4 times [2021-11-09 10:50:05,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:05,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333368945] [2021-11-09 10:50:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:05,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:06,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:06,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333368945] [2021-11-09 10:50:06,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333368945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:06,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:06,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 10:50:06,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942562807] [2021-11-09 10:50:06,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:50:06,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:50:06,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:50:06,093 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:50:06,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 211 transitions, 965 flow. Second operand has 9 states, 9 states have (on average 126.22222222222223) internal successors, (1136), 9 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) [2021-11-09 10:50:06,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:06,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:50:06,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:09,997 INFO L129 PetriNetUnfolder]: 14105/27724 cut-off events. [2021-11-09 10:50:09,997 INFO L130 PetriNetUnfolder]: For 64088/216258 co-relation queries the response was YES. [2021-11-09 10:50:10,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94366 conditions, 27724 events. 14105/27724 cut-off events. For 64088/216258 co-relation queries the response was YES. Maximal size of possible extension queue 1997. Compared 282500 event pairs, 2444 based on Foata normal form. 2501/28383 useless extension candidates. Maximal degree in co-relation 93331. Up to 6252 conditions per place. [2021-11-09 10:50:10,505 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 69 selfloop transitions, 109 changer transitions 0/292 dead transitions. [2021-11-09 10:50:10,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 292 transitions, 1809 flow [2021-11-09 10:50:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 10:50:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-09 10:50:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2021-11-09 10:50:10,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8579617834394905 [2021-11-09 10:50:10,512 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2021-11-09 10:50:10,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2021-11-09 10:50:10,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:10,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2021-11-09 10:50:10,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:10,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:10,526 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:10,526 INFO L186 Difference]: Start difference. First operand has 161 places, 211 transitions, 965 flow. Second operand 10 states and 1347 transitions. [2021-11-09 10:50:10,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 292 transitions, 1809 flow [2021-11-09 10:50:10,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 292 transitions, 1805 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 10:50:10,589 INFO L242 Difference]: Finished difference. Result has 172 places, 250 transitions, 1604 flow [2021-11-09 10:50:10,590 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1604, PETRI_PLACES=172, PETRI_TRANSITIONS=250} [2021-11-09 10:50:10,590 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 20 predicate places. [2021-11-09 10:50:10,590 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 250 transitions, 1604 flow [2021-11-09 10:50:10,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.22222222222223) internal successors, (1136), 9 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) [2021-11-09 10:50:10,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:10,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:10,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:50:10,592 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -433626132, now seen corresponding path program 5 times [2021-11-09 10:50:10,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:10,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575625194] [2021-11-09 10:50:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:10,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:11,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:11,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575625194] [2021-11-09 10:50:11,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575625194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:11,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:11,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 10:50:11,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604704228] [2021-11-09 10:50:11,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:50:11,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:11,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:50:11,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:50:11,227 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 157 [2021-11-09 10:50:11,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 250 transitions, 1604 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:11,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:11,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 157 [2021-11-09 10:50:11,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:13,622 INFO L129 PetriNetUnfolder]: 6811/17457 cut-off events. [2021-11-09 10:50:13,622 INFO L130 PetriNetUnfolder]: For 44440/100427 co-relation queries the response was YES. [2021-11-09 10:50:13,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65424 conditions, 17457 events. 6811/17457 cut-off events. For 44440/100427 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 205759 event pairs, 955 based on Foata normal form. 582/16959 useless extension candidates. Maximal degree in co-relation 64408. Up to 3842 conditions per place. [2021-11-09 10:50:14,076 INFO L132 encePairwiseOnDemand]: 144/157 looper letters, 22 selfloop transitions, 18 changer transitions 4/266 dead transitions. [2021-11-09 10:50:14,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 266 transitions, 1772 flow [2021-11-09 10:50:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 10:50:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-09 10:50:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1376 transitions. [2021-11-09 10:50:14,089 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8764331210191083 [2021-11-09 10:50:14,089 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1376 transitions. [2021-11-09 10:50:14,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1376 transitions. [2021-11-09 10:50:14,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:14,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1376 transitions. [2021-11-09 10:50:14,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 137.6) internal successors, (1376), 10 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:14,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:14,104 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:14,105 INFO L186 Difference]: Start difference. First operand has 172 places, 250 transitions, 1604 flow. Second operand 10 states and 1376 transitions. [2021-11-09 10:50:14,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 266 transitions, 1772 flow [2021-11-09 10:50:14,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 266 transitions, 1624 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-09 10:50:14,286 INFO L242 Difference]: Finished difference. Result has 181 places, 258 transitions, 1578 flow [2021-11-09 10:50:14,286 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1578, PETRI_PLACES=181, PETRI_TRANSITIONS=258} [2021-11-09 10:50:14,287 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 29 predicate places. [2021-11-09 10:50:14,287 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 258 transitions, 1578 flow [2021-11-09 10:50:14,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:14,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:14,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:14,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:50:14,291 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash -517509162, now seen corresponding path program 6 times [2021-11-09 10:50:14,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:14,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448527348] [2021-11-09 10:50:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:14,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:14,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:14,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448527348] [2021-11-09 10:50:14,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448527348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:14,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:14,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:50:14,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450658679] [2021-11-09 10:50:14,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:50:14,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:50:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:50:14,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:50:14,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 258 transitions, 1578 flow. Second operand has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:14,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:14,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:50:14,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:20,318 INFO L129 PetriNetUnfolder]: 17346/36625 cut-off events. [2021-11-09 10:50:20,319 INFO L130 PetriNetUnfolder]: For 149400/370469 co-relation queries the response was YES. [2021-11-09 10:50:20,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147626 conditions, 36625 events. 17346/36625 cut-off events. For 149400/370469 co-relation queries the response was YES. Maximal size of possible extension queue 2696. Compared 413580 event pairs, 3544 based on Foata normal form. 1633/36273 useless extension candidates. Maximal degree in co-relation 147597. Up to 9552 conditions per place. [2021-11-09 10:50:21,137 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 99 selfloop transitions, 84 changer transitions 0/306 dead transitions. [2021-11-09 10:50:21,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 306 transitions, 2348 flow [2021-11-09 10:50:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:50:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 10:50:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 933 transitions. [2021-11-09 10:50:21,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489535941765242 [2021-11-09 10:50:21,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 933 transitions. [2021-11-09 10:50:21,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 933 transitions. [2021-11-09 10:50:21,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:21,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 933 transitions. [2021-11-09 10:50:21,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.28571428571428) internal successors, (933), 7 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:21,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:21,157 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:21,158 INFO L186 Difference]: Start difference. First operand has 181 places, 258 transitions, 1578 flow. Second operand 7 states and 933 transitions. [2021-11-09 10:50:21,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 306 transitions, 2348 flow [2021-11-09 10:50:21,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 306 transitions, 2301 flow, removed 15 selfloop flow, removed 6 redundant places. [2021-11-09 10:50:21,628 INFO L242 Difference]: Finished difference. Result has 181 places, 282 transitions, 2040 flow [2021-11-09 10:50:21,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2040, PETRI_PLACES=181, PETRI_TRANSITIONS=282} [2021-11-09 10:50:21,629 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 29 predicate places. [2021-11-09 10:50:21,630 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 282 transitions, 2040 flow [2021-11-09 10:50:21,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:21,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:21,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:21,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:50:21,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1382710788, now seen corresponding path program 7 times [2021-11-09 10:50:21,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:21,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984984359] [2021-11-09 10:50:21,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:21,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:21,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:21,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984984359] [2021-11-09 10:50:21,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984984359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:21,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:21,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 10:50:21,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124484764] [2021-11-09 10:50:21,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:50:21,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:21,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:50:21,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:50:21,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:50:21,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 282 transitions, 2040 flow. Second operand has 8 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:21,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:21,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:50:21,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:27,952 INFO L129 PetriNetUnfolder]: 17395/35795 cut-off events. [2021-11-09 10:50:27,953 INFO L130 PetriNetUnfolder]: For 187973/411128 co-relation queries the response was YES. [2021-11-09 10:50:28,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161353 conditions, 35795 events. 17395/35795 cut-off events. For 187973/411128 co-relation queries the response was YES. Maximal size of possible extension queue 2686. Compared 393336 event pairs, 2613 based on Foata normal form. 2541/36260 useless extension candidates. Maximal degree in co-relation 159408. Up to 8765 conditions per place. [2021-11-09 10:50:28,420 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 59 selfloop transitions, 171 changer transitions 2/355 dead transitions. [2021-11-09 10:50:28,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 355 transitions, 3230 flow [2021-11-09 10:50:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:50:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-09 10:50:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1075 transitions. [2021-11-09 10:50:28,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8558917197452229 [2021-11-09 10:50:28,425 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1075 transitions. [2021-11-09 10:50:28,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1075 transitions. [2021-11-09 10:50:28,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:28,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1075 transitions. [2021-11-09 10:50:28,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.375) internal successors, (1075), 8 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) [2021-11-09 10:50:28,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:28,434 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:28,434 INFO L186 Difference]: Start difference. First operand has 181 places, 282 transitions, 2040 flow. Second operand 8 states and 1075 transitions. [2021-11-09 10:50:28,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 355 transitions, 3230 flow [2021-11-09 10:50:28,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 355 transitions, 3093 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-11-09 10:50:28,794 INFO L242 Difference]: Finished difference. Result has 186 places, 324 transitions, 2926 flow [2021-11-09 10:50:28,795 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2926, PETRI_PLACES=186, PETRI_TRANSITIONS=324} [2021-11-09 10:50:28,795 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 34 predicate places. [2021-11-09 10:50:28,796 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 324 transitions, 2926 flow [2021-11-09 10:50:28,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:28,797 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:28,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:28,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:50:28,797 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:28,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:28,798 INFO L85 PathProgramCache]: Analyzing trace with hash -155008254, now seen corresponding path program 8 times [2021-11-09 10:50:28,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:28,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751010385] [2021-11-09 10:50:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:28,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:28,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:28,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751010385] [2021-11-09 10:50:28,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751010385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:28,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:28,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:50:28,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162755518] [2021-11-09 10:50:28,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:50:28,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:50:28,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:50:28,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:50:28,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 324 transitions, 2926 flow. Second operand has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:28,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:28,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:50:28,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:35,402 INFO L129 PetriNetUnfolder]: 16967/36018 cut-off events. [2021-11-09 10:50:35,402 INFO L130 PetriNetUnfolder]: For 227558/510624 co-relation queries the response was YES. [2021-11-09 10:50:35,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169851 conditions, 36018 events. 16967/36018 cut-off events. For 227558/510624 co-relation queries the response was YES. Maximal size of possible extension queue 2745. Compared 408118 event pairs, 4026 based on Foata normal form. 781/34787 useless extension candidates. Maximal degree in co-relation 168357. Up to 9278 conditions per place. [2021-11-09 10:50:35,854 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 108 selfloop transitions, 135 changer transitions 2/368 dead transitions. [2021-11-09 10:50:35,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 368 transitions, 3910 flow [2021-11-09 10:50:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:50:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 10:50:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 933 transitions. [2021-11-09 10:50:35,872 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489535941765242 [2021-11-09 10:50:35,872 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 933 transitions. [2021-11-09 10:50:35,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 933 transitions. [2021-11-09 10:50:35,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:35,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 933 transitions. [2021-11-09 10:50:35,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.28571428571428) internal successors, (933), 7 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:35,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:35,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:35,880 INFO L186 Difference]: Start difference. First operand has 186 places, 324 transitions, 2926 flow. Second operand 7 states and 933 transitions. [2021-11-09 10:50:35,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 368 transitions, 3910 flow [2021-11-09 10:50:36,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 368 transitions, 3677 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-09 10:50:36,223 INFO L242 Difference]: Finished difference. Result has 189 places, 344 transitions, 3416 flow [2021-11-09 10:50:36,224 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3416, PETRI_PLACES=189, PETRI_TRANSITIONS=344} [2021-11-09 10:50:36,224 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 37 predicate places. [2021-11-09 10:50:36,225 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 344 transitions, 3416 flow [2021-11-09 10:50:36,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:36,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:36,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:36,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 10:50:36,226 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash 438756098, now seen corresponding path program 9 times [2021-11-09 10:50:36,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:36,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494734221] [2021-11-09 10:50:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:36,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:36,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:36,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494734221] [2021-11-09 10:50:36,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494734221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:36,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:36,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:50:36,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984823266] [2021-11-09 10:50:36,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:50:36,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:36,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:50:36,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:50:36,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:50:36,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 344 transitions, 3416 flow. Second operand has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:36,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:36,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:50:36,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:40,251 INFO L129 PetriNetUnfolder]: 9318/21033 cut-off events. [2021-11-09 10:50:40,251 INFO L130 PetriNetUnfolder]: For 150967/276205 co-relation queries the response was YES. [2021-11-09 10:50:40,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96590 conditions, 21033 events. 9318/21033 cut-off events. For 150967/276205 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 227383 event pairs, 1971 based on Foata normal form. 842/20878 useless extension candidates. Maximal degree in co-relation 96545. Up to 5094 conditions per place. [2021-11-09 10:50:40,889 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 100 selfloop transitions, 176 changer transitions 0/389 dead transitions. [2021-11-09 10:50:40,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 389 transitions, 4705 flow [2021-11-09 10:50:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:50:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 10:50:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 933 transitions. [2021-11-09 10:50:40,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489535941765242 [2021-11-09 10:50:40,895 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 933 transitions. [2021-11-09 10:50:40,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 933 transitions. [2021-11-09 10:50:40,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:40,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 933 transitions. [2021-11-09 10:50:40,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.28571428571428) internal successors, (933), 7 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:40,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:40,904 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:40,905 INFO L186 Difference]: Start difference. First operand has 189 places, 344 transitions, 3416 flow. Second operand 7 states and 933 transitions. [2021-11-09 10:50:40,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 389 transitions, 4705 flow [2021-11-09 10:50:41,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 389 transitions, 4494 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-11-09 10:50:41,196 INFO L242 Difference]: Finished difference. Result has 186 places, 369 transitions, 4325 flow [2021-11-09 10:50:41,197 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4325, PETRI_PLACES=186, PETRI_TRANSITIONS=369} [2021-11-09 10:50:41,197 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 34 predicate places. [2021-11-09 10:50:41,197 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 369 transitions, 4325 flow [2021-11-09 10:50:41,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:41,198 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:41,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:41,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 10:50:41,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:41,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1066065236, now seen corresponding path program 10 times [2021-11-09 10:50:41,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:41,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168657909] [2021-11-09 10:50:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:41,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:41,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:41,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168657909] [2021-11-09 10:50:41,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168657909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:41,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:41,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 10:50:41,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349990544] [2021-11-09 10:50:41,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:50:41,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:50:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:50:41,363 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:50:41,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 369 transitions, 4325 flow. Second operand has 8 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:41,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:41,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:50:41,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:45,122 INFO L129 PetriNetUnfolder]: 9095/20125 cut-off events. [2021-11-09 10:50:45,122 INFO L130 PetriNetUnfolder]: For 161793/301149 co-relation queries the response was YES. [2021-11-09 10:50:45,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96502 conditions, 20125 events. 9095/20125 cut-off events. For 161793/301149 co-relation queries the response was YES. Maximal size of possible extension queue 1412. Compared 212220 event pairs, 1251 based on Foata normal form. 2316/21337 useless extension candidates. Maximal degree in co-relation 94825. Up to 4530 conditions per place. [2021-11-09 10:50:45,407 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 62 selfloop transitions, 256 changer transitions 1/432 dead transitions. [2021-11-09 10:50:45,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 432 transitions, 5743 flow [2021-11-09 10:50:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:50:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-09 10:50:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1075 transitions. [2021-11-09 10:50:45,411 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8558917197452229 [2021-11-09 10:50:45,412 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1075 transitions. [2021-11-09 10:50:45,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1075 transitions. [2021-11-09 10:50:45,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:50:45,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1075 transitions. [2021-11-09 10:50:45,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.375) internal successors, (1075), 8 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) [2021-11-09 10:50:45,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:45,421 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:45,421 INFO L186 Difference]: Start difference. First operand has 186 places, 369 transitions, 4325 flow. Second operand 8 states and 1075 transitions. [2021-11-09 10:50:45,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 432 transitions, 5743 flow [2021-11-09 10:50:45,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 432 transitions, 5530 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-09 10:50:45,579 INFO L242 Difference]: Finished difference. Result has 190 places, 400 transitions, 5304 flow [2021-11-09 10:50:45,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=4139, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5304, PETRI_PLACES=190, PETRI_TRANSITIONS=400} [2021-11-09 10:50:45,580 INFO L334 CegarLoopForPetriNet]: 152 programPoint places, 38 predicate places. [2021-11-09 10:50:45,580 INFO L470 AbstractCegarLoop]: Abstraction has has 190 places, 400 transitions, 5304 flow [2021-11-09 10:50:45,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:45,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:50:45,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:45,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 10:50:45,581 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-09 10:50:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 5954294, now seen corresponding path program 11 times [2021-11-09 10:50:45,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:45,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074502028] [2021-11-09 10:50:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:45,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:45,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:45,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074502028] [2021-11-09 10:50:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074502028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:45,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:45,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 10:50:45,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429306321] [2021-11-09 10:50:45,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:50:45,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:50:45,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:50:45,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2021-11-09 10:50:45,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 400 transitions, 5304 flow. Second operand has 9 states, 9 states have (on average 126.22222222222223) internal successors, (1136), 9 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) [2021-11-09 10:50:45,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:50:45,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2021-11-09 10:50:45,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:50:49,822 INFO L129 PetriNetUnfolder]: 8674/19790 cut-off events. [2021-11-09 10:50:49,823 INFO L130 PetriNetUnfolder]: For 190145/335649 co-relation queries the response was YES. [2021-11-09 10:50:49,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99391 conditions, 19790 events. 8674/19790 cut-off events. For 190145/335649 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 213077 event pairs, 1204 based on Foata normal form. 2087/20860 useless extension candidates. Maximal degree in co-relation 97680. Up to 4498 conditions per place.