./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/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_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/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_eaef006f-30d5-4a11-9b3e-af99fc04755e/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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:50:32,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:50:32,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:50:32,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:50:32,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:50:32,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:50:32,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:50:32,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:50:32,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:50:32,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:50:32,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:50:32,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:50:32,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:50:32,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:50:32,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:50:32,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:50:32,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:50:32,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:50:32,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:50:32,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:50:32,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:50:32,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:50:32,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:50:32,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:50:32,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:50:32,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:50:32,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:50:32,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:50:32,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:50:32,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:50:32,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:50:32,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:50:32,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:50:32,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:50:32,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:50:32,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:50:32,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:50:32,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:50:32,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:50:32,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:50:32,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:50:32,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:50:32,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:50:32,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:50:32,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:50:32,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:50:32,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:50:32,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:50:32,451 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:50:32,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:50:32,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:50:32,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:50:32,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:50:32,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:50:32,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:50:32,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:50:32,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:50:32,455 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:50:32,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:50:32,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:50:32,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:50:32,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:50:32,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:50:32,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:50:32,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:50:32,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:50:32,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:50:32,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:50:32,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:50:32,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:50:32,458 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:50:32,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:50:32,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:50:32,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:50:32,461 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_eaef006f-30d5-4a11-9b3e-af99fc04755e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2021-11-09 09:50:32,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:50:32,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:50:32,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:50:32,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:50:32,906 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:50:32,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-09 09:50:32,986 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/data/db009fdf3/b7fc77d2cc054053b9033dd3a818fc6e/FLAGc9c3cac2a [2021-11-09 09:50:33,695 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:50:33,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-09 09:50:33,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/data/db009fdf3/b7fc77d2cc054053b9033dd3a818fc6e/FLAGc9c3cac2a [2021-11-09 09:50:33,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/data/db009fdf3/b7fc77d2cc054053b9033dd3a818fc6e [2021-11-09 09:50:33,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:50:33,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:50:33,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:50:33,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:50:33,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:50:33,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:50:33" (1/1) ... [2021-11-09 09:50:33,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247828b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:33, skipping insertion in model container [2021-11-09 09:50:33,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:50:33" (1/1) ... [2021-11-09 09:50:33,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:50:34,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:50:34,338 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_eaef006f-30d5-4a11-9b3e-af99fc04755e/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-11-09 09:50:34,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:50:34,686 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:50:34,705 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_eaef006f-30d5-4a11-9b3e-af99fc04755e/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-11-09 09:50:34,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:50:34,823 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:50:34,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34 WrapperNode [2021-11-09 09:50:34,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:50:34,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:50:34,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:50:34,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:50:34,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:50:34,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:50:34,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:50:34,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:50:34,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:50:34,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:50:34,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:50:34,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:50:34,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (1/1) ... [2021-11-09 09:50:34,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:50:34,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:34,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:50:34,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:50:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:50:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-09 09:50:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:50:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:50:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-09 09:50:35,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-09 09:50:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-09 09:50:35,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-09 09:50:35,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-09 09:50:35,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-09 09:50:35,020 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-11-09 09:50:35,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-11-09 09:50:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:50:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-09 09:50:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:50:35,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:50:35,023 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 09:50:35,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:50:35,466 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-09 09:50:35,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:50:35 BoogieIcfgContainer [2021-11-09 09:50:35,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:50:35,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:50:35,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:50:35,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:50:35,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:50:33" (1/3) ... [2021-11-09 09:50:35,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d5b219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:50:35, skipping insertion in model container [2021-11-09 09:50:35,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:34" (2/3) ... [2021-11-09 09:50:35,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d5b219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:50:35, skipping insertion in model container [2021-11-09 09:50:35,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:50:35" (3/3) ... [2021-11-09 09:50:35,480 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-09 09:50:35,487 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 09:50:35,487 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:50:35,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:50:35,487 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 09:50:35,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,560 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,561 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,561 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,561 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,561 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,562 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,562 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,562 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,575 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,576 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,582 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,583 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,584 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,585 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,585 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,587 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,587 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,588 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,588 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,589 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,589 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,590 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,591 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,592 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,593 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,593 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,594 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,594 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,594 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,594 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,595 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,595 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,596 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,596 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,596 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,597 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,597 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,597 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,597 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,598 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,598 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,598 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,599 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,599 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,599 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,602 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,606 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,607 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,607 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,608 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,624 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,624 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,625 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,625 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,631 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,632 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,633 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,634 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,640 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,641 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,641 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,642 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:50:35,647 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-09 09:50:35,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:50:35,745 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:50:35,745 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-09 09:50:35,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 214 flow [2021-11-09 09:50:35,872 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-11-09 09:50:35,873 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 09:50:35,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-11-09 09:50:35,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 97 transitions, 214 flow [2021-11-09 09:50:35,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 79 transitions, 170 flow [2021-11-09 09:50:35,937 INFO L129 PetriNetUnfolder]: 1/78 cut-off events. [2021-11-09 09:50:35,937 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 09:50:35,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:35,938 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] [2021-11-09 09:50:35,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:35,950 INFO L85 PathProgramCache]: Analyzing trace with hash 858729269, now seen corresponding path program 1 times [2021-11-09 09:50:35,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:35,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53990441] [2021-11-09 09:50:35,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:35,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:36,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:36,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53990441] [2021-11-09 09:50:36,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53990441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:36,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:36,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:36,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809300961] [2021-11-09 09:50:36,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:36,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:36,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:36,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-11-09 09:50:36,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:36,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:36,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-11-09 09:50:36,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:37,724 INFO L129 PetriNetUnfolder]: 823/1773 cut-off events. [2021-11-09 09:50:37,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 09:50:37,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 1773 events. 823/1773 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11940 event pairs, 193 based on Foata normal form. 62/1771 useless extension candidates. Maximal degree in co-relation 3020. Up to 405 conditions per place. [2021-11-09 09:50:37,751 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 22 selfloop transitions, 7 changer transitions 56/147 dead transitions. [2021-11-09 09:50:37,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 147 transitions, 476 flow [2021-11-09 09:50:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 09:50:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1092 transitions. [2021-11-09 09:50:37,782 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865979381443299 [2021-11-09 09:50:37,783 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1092 transitions. [2021-11-09 09:50:37,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1092 transitions. [2021-11-09 09:50:37,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:37,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1092 transitions. [2021-11-09 09:50:37,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:37,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:37,823 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:37,825 INFO L186 Difference]: Start difference. First operand has 91 places, 79 transitions, 170 flow. Second operand 13 states and 1092 transitions. [2021-11-09 09:50:37,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 147 transitions, 476 flow [2021-11-09 09:50:37,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 147 transitions, 472 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-09 09:50:37,843 INFO L242 Difference]: Finished difference. Result has 111 places, 83 transitions, 264 flow [2021-11-09 09:50:37,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=264, PETRI_PLACES=111, PETRI_TRANSITIONS=83} [2021-11-09 09:50:37,847 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2021-11-09 09:50:37,848 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 83 transitions, 264 flow [2021-11-09 09:50:37,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:37,849 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:37,849 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] [2021-11-09 09:50:37,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:50:37,850 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash 231543734, now seen corresponding path program 1 times [2021-11-09 09:50:37,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:37,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35432498] [2021-11-09 09:50:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:37,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:38,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:38,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35432498] [2021-11-09 09:50:38,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35432498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:38,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:38,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:38,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134839864] [2021-11-09 09:50:38,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:38,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:38,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:38,155 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-11-09 09:50:38,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 83 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:38,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:38,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-11-09 09:50:38,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:38,824 INFO L129 PetriNetUnfolder]: 503/1431 cut-off events. [2021-11-09 09:50:38,825 INFO L130 PetriNetUnfolder]: For 3244/5408 co-relation queries the response was YES. [2021-11-09 09:50:38,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 1431 events. 503/1431 cut-off events. For 3244/5408 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10397 event pairs, 6 based on Foata normal form. 39/1428 useless extension candidates. Maximal degree in co-relation 4483. Up to 383 conditions per place. [2021-11-09 09:50:38,850 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 24 selfloop transitions, 15 changer transitions 67/168 dead transitions. [2021-11-09 09:50:38,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 168 transitions, 1124 flow [2021-11-09 09:50:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 09:50:38,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1091 transitions. [2021-11-09 09:50:38,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8651863600317209 [2021-11-09 09:50:38,857 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1091 transitions. [2021-11-09 09:50:38,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1091 transitions. [2021-11-09 09:50:38,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:38,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1091 transitions. [2021-11-09 09:50:38,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.92307692307692) internal successors, (1091), 13 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:38,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:38,871 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:38,871 INFO L186 Difference]: Start difference. First operand has 111 places, 83 transitions, 264 flow. Second operand 13 states and 1091 transitions. [2021-11-09 09:50:38,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 168 transitions, 1124 flow [2021-11-09 09:50:38,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 168 transitions, 1096 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-11-09 09:50:38,903 INFO L242 Difference]: Finished difference. Result has 122 places, 94 transitions, 453 flow [2021-11-09 09:50:38,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=453, PETRI_PLACES=122, PETRI_TRANSITIONS=94} [2021-11-09 09:50:38,904 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 31 predicate places. [2021-11-09 09:50:38,904 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 94 transitions, 453 flow [2021-11-09 09:50:38,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:38,905 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:38,906 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] [2021-11-09 09:50:38,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:50:38,906 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1368959755, now seen corresponding path program 1 times [2021-11-09 09:50:38,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:38,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874965173] [2021-11-09 09:50:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:38,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:39,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:39,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874965173] [2021-11-09 09:50:39,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874965173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:39,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:39,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:39,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070807984] [2021-11-09 09:50:39,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:39,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:39,237 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-11-09 09:50:39,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 94 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:39,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:39,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-11-09 09:50:39,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:39,826 INFO L129 PetriNetUnfolder]: 282/949 cut-off events. [2021-11-09 09:50:39,827 INFO L130 PetriNetUnfolder]: For 4532/8346 co-relation queries the response was YES. [2021-11-09 09:50:39,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3627 conditions, 949 events. 282/949 cut-off events. For 4532/8346 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6590 event pairs, 18 based on Foata normal form. 36/955 useless extension candidates. Maximal degree in co-relation 3571. Up to 220 conditions per place. [2021-11-09 09:50:39,847 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 31 selfloop transitions, 22 changer transitions 61/176 dead transitions. [2021-11-09 09:50:39,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 176 transitions, 1539 flow [2021-11-09 09:50:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 09:50:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1091 transitions. [2021-11-09 09:50:39,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8651863600317209 [2021-11-09 09:50:39,860 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1091 transitions. [2021-11-09 09:50:39,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1091 transitions. [2021-11-09 09:50:39,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:39,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1091 transitions. [2021-11-09 09:50:39,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.92307692307692) internal successors, (1091), 13 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:39,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:39,872 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:39,872 INFO L186 Difference]: Start difference. First operand has 122 places, 94 transitions, 453 flow. Second operand 13 states and 1091 transitions. [2021-11-09 09:50:39,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 176 transitions, 1539 flow [2021-11-09 09:50:39,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 176 transitions, 1449 flow, removed 45 selfloop flow, removed 3 redundant places. [2021-11-09 09:50:39,915 INFO L242 Difference]: Finished difference. Result has 134 places, 106 transitions, 710 flow [2021-11-09 09:50:39,915 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=710, PETRI_PLACES=134, PETRI_TRANSITIONS=106} [2021-11-09 09:50:39,916 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 43 predicate places. [2021-11-09 09:50:39,916 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 106 transitions, 710 flow [2021-11-09 09:50:39,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:39,917 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:39,917 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] [2021-11-09 09:50:39,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:50:39,918 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:39,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash -442639525, now seen corresponding path program 1 times [2021-11-09 09:50:39,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:39,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842504733] [2021-11-09 09:50:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:39,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:40,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:40,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842504733] [2021-11-09 09:50:40,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842504733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:40,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:40,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:50:40,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105162075] [2021-11-09 09:50:40,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:50:40,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:50:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:50:40,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-11-09 09:50:40,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 106 transitions, 710 flow. Second operand has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:40,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:40,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-11-09 09:50:40,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:40,664 INFO L129 PetriNetUnfolder]: 229/816 cut-off events. [2021-11-09 09:50:40,664 INFO L130 PetriNetUnfolder]: For 6518/12847 co-relation queries the response was YES. [2021-11-09 09:50:40,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 816 events. 229/816 cut-off events. For 6518/12847 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5301 event pairs, 21 based on Foata normal form. 39/819 useless extension candidates. Maximal degree in co-relation 3645. Up to 195 conditions per place. [2021-11-09 09:50:40,685 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 29 selfloop transitions, 16 changer transitions 56/163 dead transitions. [2021-11-09 09:50:40,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 163 transitions, 1683 flow [2021-11-09 09:50:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:50:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-09 09:50:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 672 transitions. [2021-11-09 09:50:40,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865979381443299 [2021-11-09 09:50:40,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 672 transitions. [2021-11-09 09:50:40,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 672 transitions. [2021-11-09 09:50:40,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:40,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 672 transitions. [2021-11-09 09:50:40,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:40,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:40,701 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:40,701 INFO L186 Difference]: Start difference. First operand has 134 places, 106 transitions, 710 flow. Second operand 8 states and 672 transitions. [2021-11-09 09:50:40,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 163 transitions, 1683 flow [2021-11-09 09:50:40,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 163 transitions, 1627 flow, removed 28 selfloop flow, removed 6 redundant places. [2021-11-09 09:50:40,744 INFO L242 Difference]: Finished difference. Result has 130 places, 98 transitions, 616 flow [2021-11-09 09:50:40,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=616, PETRI_PLACES=130, PETRI_TRANSITIONS=98} [2021-11-09 09:50:40,745 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 39 predicate places. [2021-11-09 09:50:40,745 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 98 transitions, 616 flow [2021-11-09 09:50:40,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:40,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:40,747 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:40,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:50:40,747 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:40,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1051954830, now seen corresponding path program 1 times [2021-11-09 09:50:40,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:40,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213167683] [2021-11-09 09:50:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:40,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:41,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:41,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213167683] [2021-11-09 09:50:41,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213167683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:41,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:41,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:41,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966953137] [2021-11-09 09:50:41,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:41,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:41,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:41,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-11-09 09:50:41,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 98 transitions, 616 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:41,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:41,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-11-09 09:50:41,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:41,388 INFO L129 PetriNetUnfolder]: 127/519 cut-off events. [2021-11-09 09:50:41,388 INFO L130 PetriNetUnfolder]: For 3618/4863 co-relation queries the response was YES. [2021-11-09 09:50:41,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 519 events. 127/519 cut-off events. For 3618/4863 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3010 event pairs, 12 based on Foata normal form. 18/526 useless extension candidates. Maximal degree in co-relation 2237. Up to 113 conditions per place. [2021-11-09 09:50:41,402 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 26 selfloop transitions, 20 changer transitions 31/139 dead transitions. [2021-11-09 09:50:41,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 139 transitions, 1283 flow [2021-11-09 09:50:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:41,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 09:50:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1061 transitions. [2021-11-09 09:50:41,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8413957176843775 [2021-11-09 09:50:41,408 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1061 transitions. [2021-11-09 09:50:41,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1061 transitions. [2021-11-09 09:50:41,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:41,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1061 transitions. [2021-11-09 09:50:41,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.61538461538461) internal successors, (1061), 13 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:41,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:41,422 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:41,422 INFO L186 Difference]: Start difference. First operand has 130 places, 98 transitions, 616 flow. Second operand 13 states and 1061 transitions. [2021-11-09 09:50:41,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 139 transitions, 1283 flow [2021-11-09 09:50:41,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 139 transitions, 1137 flow, removed 21 selfloop flow, removed 12 redundant places. [2021-11-09 09:50:41,454 INFO L242 Difference]: Finished difference. Result has 139 places, 101 transitions, 694 flow [2021-11-09 09:50:41,455 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=694, PETRI_PLACES=139, PETRI_TRANSITIONS=101} [2021-11-09 09:50:41,455 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2021-11-09 09:50:41,455 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 101 transitions, 694 flow [2021-11-09 09:50:41,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:41,456 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:41,456 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] [2021-11-09 09:50:41,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:50:41,457 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:41,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1751437411, now seen corresponding path program 1 times [2021-11-09 09:50:41,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:41,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118478989] [2021-11-09 09:50:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:41,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:41,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:41,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118478989] [2021-11-09 09:50:41,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118478989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:41,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:41,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:41,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942665951] [2021-11-09 09:50:41,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:41,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:41,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:41,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:41,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-11-09 09:50:41,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 101 transitions, 694 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:41,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:41,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-11-09 09:50:41,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:42,003 INFO L129 PetriNetUnfolder]: 94/507 cut-off events. [2021-11-09 09:50:42,003 INFO L130 PetriNetUnfolder]: For 4174/5482 co-relation queries the response was YES. [2021-11-09 09:50:42,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 507 events. 94/507 cut-off events. For 4174/5482 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3197 event pairs, 3 based on Foata normal form. 19/518 useless extension candidates. Maximal degree in co-relation 2153. Up to 81 conditions per place. [2021-11-09 09:50:42,016 INFO L132 encePairwiseOnDemand]: 87/97 looper letters, 31 selfloop transitions, 19 changer transitions 27/139 dead transitions. [2021-11-09 09:50:42,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 139 transitions, 1343 flow [2021-11-09 09:50:42,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 09:50:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1055 transitions. [2021-11-09 09:50:42,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8366375892149088 [2021-11-09 09:50:42,022 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1055 transitions. [2021-11-09 09:50:42,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1055 transitions. [2021-11-09 09:50:42,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:42,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1055 transitions. [2021-11-09 09:50:42,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.15384615384616) internal successors, (1055), 13 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:42,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:42,034 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:42,034 INFO L186 Difference]: Start difference. First operand has 139 places, 101 transitions, 694 flow. Second operand 13 states and 1055 transitions. [2021-11-09 09:50:42,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 139 transitions, 1343 flow [2021-11-09 09:50:42,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 139 transitions, 1249 flow, removed 45 selfloop flow, removed 7 redundant places. [2021-11-09 09:50:42,064 INFO L242 Difference]: Finished difference. Result has 147 places, 102 transitions, 794 flow [2021-11-09 09:50:42,064 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=794, PETRI_PLACES=147, PETRI_TRANSITIONS=102} [2021-11-09 09:50:42,065 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2021-11-09 09:50:42,065 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 102 transitions, 794 flow [2021-11-09 09:50:42,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:42,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:42,067 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] [2021-11-09 09:50:42,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:50:42,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:42,068 INFO L85 PathProgramCache]: Analyzing trace with hash 816447524, now seen corresponding path program 1 times [2021-11-09 09:50:42,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:42,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4119337] [2021-11-09 09:50:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:42,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:42,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:42,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4119337] [2021-11-09 09:50:42,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4119337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:42,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:42,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:42,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934376613] [2021-11-09 09:50:42,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:42,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:42,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:42,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:42,262 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-11-09 09:50:42,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 102 transitions, 794 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:42,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:42,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-11-09 09:50:42,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:42,623 INFO L129 PetriNetUnfolder]: 66/457 cut-off events. [2021-11-09 09:50:42,623 INFO L130 PetriNetUnfolder]: For 4596/5797 co-relation queries the response was YES. [2021-11-09 09:50:42,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2010 conditions, 457 events. 66/457 cut-off events. For 4596/5797 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2868 event pairs, 2 based on Foata normal form. 26/476 useless extension candidates. Maximal degree in co-relation 1970. Up to 64 conditions per place. [2021-11-09 09:50:42,634 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 25 selfloop transitions, 21 changer transitions 25/133 dead transitions. [2021-11-09 09:50:42,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 133 transitions, 1390 flow [2021-11-09 09:50:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 09:50:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1056 transitions. [2021-11-09 09:50:42,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8374306106264869 [2021-11-09 09:50:42,640 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1056 transitions. [2021-11-09 09:50:42,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1056 transitions. [2021-11-09 09:50:42,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:42,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1056 transitions. [2021-11-09 09:50:42,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.23076923076923) internal successors, (1056), 13 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:42,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:42,651 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:42,652 INFO L186 Difference]: Start difference. First operand has 147 places, 102 transitions, 794 flow. Second operand 13 states and 1056 transitions. [2021-11-09 09:50:42,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 133 transitions, 1390 flow [2021-11-09 09:50:42,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 133 transitions, 1284 flow, removed 53 selfloop flow, removed 9 redundant places. [2021-11-09 09:50:42,686 INFO L242 Difference]: Finished difference. Result has 151 places, 100 transitions, 793 flow [2021-11-09 09:50:42,687 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=793, PETRI_PLACES=151, PETRI_TRANSITIONS=100} [2021-11-09 09:50:42,687 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2021-11-09 09:50:42,688 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 100 transitions, 793 flow [2021-11-09 09:50:42,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:42,688 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:42,689 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] [2021-11-09 09:50:42,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:50:42,689 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:42,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2008148417, now seen corresponding path program 1 times [2021-11-09 09:50:42,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:42,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585843447] [2021-11-09 09:50:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:42,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:42,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:42,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585843447] [2021-11-09 09:50:42,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585843447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:42,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:42,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:50:42,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541632226] [2021-11-09 09:50:42,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:50:42,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:50:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:50:42,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-11-09 09:50:42,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 100 transitions, 793 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:42,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:42,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-11-09 09:50:42,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:44,080 INFO L129 PetriNetUnfolder]: 2233/4263 cut-off events. [2021-11-09 09:50:44,080 INFO L130 PetriNetUnfolder]: For 5146/5643 co-relation queries the response was YES. [2021-11-09 09:50:44,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9467 conditions, 4263 events. 2233/4263 cut-off events. For 5146/5643 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 35572 event pairs, 83 based on Foata normal form. 5/3788 useless extension candidates. Maximal degree in co-relation 9425. Up to 1481 conditions per place. [2021-11-09 09:50:44,171 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 29 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2021-11-09 09:50:44,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 137 transitions, 965 flow [2021-11-09 09:50:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:50:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-09 09:50:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 871 transitions. [2021-11-09 09:50:44,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8979381443298969 [2021-11-09 09:50:44,177 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 871 transitions. [2021-11-09 09:50:44,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 871 transitions. [2021-11-09 09:50:44,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:44,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 871 transitions. [2021-11-09 09:50:44,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:44,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:44,186 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:44,186 INFO L186 Difference]: Start difference. First operand has 151 places, 100 transitions, 793 flow. Second operand 10 states and 871 transitions. [2021-11-09 09:50:44,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 137 transitions, 965 flow [2021-11-09 09:50:44,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 137 transitions, 929 flow, removed 18 selfloop flow, removed 10 redundant places. [2021-11-09 09:50:44,223 INFO L242 Difference]: Finished difference. Result has 147 places, 118 transitions, 900 flow [2021-11-09 09:50:44,224 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=900, PETRI_PLACES=147, PETRI_TRANSITIONS=118} [2021-11-09 09:50:44,224 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2021-11-09 09:50:44,225 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 118 transitions, 900 flow [2021-11-09 09:50:44,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:44,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:44,226 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] [2021-11-09 09:50:44,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:50:44,226 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:44,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1202311621, now seen corresponding path program 1 times [2021-11-09 09:50:44,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:44,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218392503] [2021-11-09 09:50:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:44,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:44,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:44,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218392503] [2021-11-09 09:50:44,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218392503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:44,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:44,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:44,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559939829] [2021-11-09 09:50:44,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:44,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:44,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:44,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:44,429 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-11-09 09:50:44,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 118 transitions, 900 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:44,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:44,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-11-09 09:50:44,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:46,194 INFO L129 PetriNetUnfolder]: 2508/4892 cut-off events. [2021-11-09 09:50:46,195 INFO L130 PetriNetUnfolder]: For 16776/20199 co-relation queries the response was YES. [2021-11-09 09:50:46,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19481 conditions, 4892 events. 2508/4892 cut-off events. For 16776/20199 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 42975 event pairs, 20 based on Foata normal form. 399/4910 useless extension candidates. Maximal degree in co-relation 19443. Up to 2733 conditions per place. [2021-11-09 09:50:46,330 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 34 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2021-11-09 09:50:46,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 160 transitions, 1324 flow [2021-11-09 09:50:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 09:50:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1134 transitions. [2021-11-09 09:50:46,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8992862807295797 [2021-11-09 09:50:46,338 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1134 transitions. [2021-11-09 09:50:46,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1134 transitions. [2021-11-09 09:50:46,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:46,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1134 transitions. [2021-11-09 09:50:46,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.23076923076923) internal successors, (1134), 13 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:46,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:46,353 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 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 09:50:46,353 INFO L186 Difference]: Start difference. First operand has 147 places, 118 transitions, 900 flow. Second operand 13 states and 1134 transitions. [2021-11-09 09:50:46,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 160 transitions, 1324 flow [2021-11-09 09:50:46,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 160 transitions, 1234 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-11-09 09:50:46,436 INFO L242 Difference]: Finished difference. Result has 158 places, 138 transitions, 1103 flow [2021-11-09 09:50:46,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1103, PETRI_PLACES=158, PETRI_TRANSITIONS=138} [2021-11-09 09:50:46,438 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 67 predicate places. [2021-11-09 09:50:46,438 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 138 transitions, 1103 flow [2021-11-09 09:50:46,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:46,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:46,440 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] [2021-11-09 09:50:46,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:50:46,441 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1109319750, now seen corresponding path program 1 times [2021-11-09 09:50:46,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:46,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786336863] [2021-11-09 09:50:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:46,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:46,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:46,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786336863] [2021-11-09 09:50:46,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786336863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:46,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:46,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:50:46,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128761146] [2021-11-09 09:50:46,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:50:46,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:46,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:50:46,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:50:46,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-11-09 09:50:46,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 138 transitions, 1103 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:46,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:46,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-11-09 09:50:46,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:48,541 INFO L129 PetriNetUnfolder]: 2398/4721 cut-off events. [2021-11-09 09:50:48,541 INFO L130 PetriNetUnfolder]: For 44423/53169 co-relation queries the response was YES. [2021-11-09 09:50:48,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26665 conditions, 4721 events. 2398/4721 cut-off events. For 44423/53169 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 42560 event pairs, 1 based on Foata normal form. 578/4967 useless extension candidates. Maximal degree in co-relation 26626. Up to 2600 conditions per place. [2021-11-09 09:50:48,647 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 28 selfloop transitions, 58 changer transitions 12/186 dead transitions. [2021-11-09 09:50:48,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 186 transitions, 1805 flow [2021-11-09 09:50:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:50:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-09 09:50:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1397 transitions. [2021-11-09 09:50:48,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9001288659793815 [2021-11-09 09:50:48,654 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1397 transitions. [2021-11-09 09:50:48,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1397 transitions. [2021-11-09 09:50:48,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:48,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1397 transitions. [2021-11-09 09:50:48,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:48,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:48,665 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:48,666 INFO L186 Difference]: Start difference. First operand has 158 places, 138 transitions, 1103 flow. Second operand 16 states and 1397 transitions. [2021-11-09 09:50:48,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 186 transitions, 1805 flow [2021-11-09 09:50:48,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 186 transitions, 1696 flow, removed 45 selfloop flow, removed 4 redundant places. [2021-11-09 09:50:49,003 INFO L242 Difference]: Finished difference. Result has 173 places, 164 transitions, 1463 flow [2021-11-09 09:50:49,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1463, PETRI_PLACES=173, PETRI_TRANSITIONS=164} [2021-11-09 09:50:49,005 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 82 predicate places. [2021-11-09 09:50:49,005 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 164 transitions, 1463 flow [2021-11-09 09:50:49,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:49,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:49,006 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] [2021-11-09 09:50:49,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:50:49,009 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2115812223, now seen corresponding path program 1 times [2021-11-09 09:50:49,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:49,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918855955] [2021-11-09 09:50:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:49,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:49,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:49,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918855955] [2021-11-09 09:50:49,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918855955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:49,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:49,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:49,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373685002] [2021-11-09 09:50:49,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:49,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:49,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-11-09 09:50:49,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 164 transitions, 1463 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:49,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:49,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-11-09 09:50:49,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:50,495 INFO L129 PetriNetUnfolder]: 1633/4496 cut-off events. [2021-11-09 09:50:50,495 INFO L130 PetriNetUnfolder]: For 33434/34799 co-relation queries the response was YES. [2021-11-09 09:50:50,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20546 conditions, 4496 events. 1633/4496 cut-off events. For 33434/34799 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 48625 event pairs, 1 based on Foata normal form. 19/4274 useless extension candidates. Maximal degree in co-relation 20503. Up to 1520 conditions per place. [2021-11-09 09:50:50,581 INFO L132 encePairwiseOnDemand]: 90/97 looper letters, 15 selfloop transitions, 12 changer transitions 7/174 dead transitions. [2021-11-09 09:50:50,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 174 transitions, 1570 flow [2021-11-09 09:50:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:50:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-09 09:50:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 679 transitions. [2021-11-09 09:50:50,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-11-09 09:50:50,584 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 679 transitions. [2021-11-09 09:50:50,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 679 transitions. [2021-11-09 09:50:50,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:50,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 679 transitions. [2021-11-09 09:50:50,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:50,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:50,593 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:50,594 INFO L186 Difference]: Start difference. First operand has 173 places, 164 transitions, 1463 flow. Second operand 8 states and 679 transitions. [2021-11-09 09:50:50,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 174 transitions, 1570 flow [2021-11-09 09:50:51,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 174 transitions, 1245 flow, removed 120 selfloop flow, removed 14 redundant places. [2021-11-09 09:50:51,886 INFO L242 Difference]: Finished difference. Result has 171 places, 163 transitions, 1184 flow [2021-11-09 09:50:51,886 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1184, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2021-11-09 09:50:51,887 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 80 predicate places. [2021-11-09 09:50:51,887 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 1184 flow [2021-11-09 09:50:51,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:51,888 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:51,888 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] [2021-11-09 09:50:51,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:50:51,889 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:51,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash 276774559, now seen corresponding path program 2 times [2021-11-09 09:50:51,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:51,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503401996] [2021-11-09 09:50:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:51,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:52,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:52,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503401996] [2021-11-09 09:50:52,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503401996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:52,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:52,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:50:52,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343420327] [2021-11-09 09:50:52,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:50:52,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:50:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:50:52,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-11-09 09:50:52,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 1184 flow. Second operand has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:52,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:52,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-11-09 09:50:52,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:53,829 INFO L129 PetriNetUnfolder]: 2373/5194 cut-off events. [2021-11-09 09:50:53,829 INFO L130 PetriNetUnfolder]: For 12187/16500 co-relation queries the response was YES. [2021-11-09 09:50:53,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19043 conditions, 5194 events. 2373/5194 cut-off events. For 12187/16500 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 52413 event pairs, 1 based on Foata normal form. 610/5403 useless extension candidates. Maximal degree in co-relation 19001. Up to 785 conditions per place. [2021-11-09 09:50:53,907 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 4 selfloop transitions, 19 changer transitions 108/198 dead transitions. [2021-11-09 09:50:53,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 198 transitions, 1641 flow [2021-11-09 09:50:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:50:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-09 09:50:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1638 transitions. [2021-11-09 09:50:53,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887683125339121 [2021-11-09 09:50:53,913 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1638 transitions. [2021-11-09 09:50:53,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1638 transitions. [2021-11-09 09:50:53,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:53,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1638 transitions. [2021-11-09 09:50:53,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 86.21052631578948) internal successors, (1638), 19 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:53,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 97.0) internal successors, (1940), 20 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:53,925 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 97.0) internal successors, (1940), 20 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:53,926 INFO L186 Difference]: Start difference. First operand has 171 places, 163 transitions, 1184 flow. Second operand 19 states and 1638 transitions. [2021-11-09 09:50:53,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 198 transitions, 1641 flow [2021-11-09 09:50:54,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 198 transitions, 1597 flow, removed 6 selfloop flow, removed 8 redundant places. [2021-11-09 09:50:54,325 INFO L242 Difference]: Finished difference. Result has 184 places, 90 transitions, 475 flow [2021-11-09 09:50:54,325 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=475, PETRI_PLACES=184, PETRI_TRANSITIONS=90} [2021-11-09 09:50:54,326 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2021-11-09 09:50:54,326 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 90 transitions, 475 flow [2021-11-09 09:50:54,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:54,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:54,327 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] [2021-11-09 09:50:54,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:50:54,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -584611888, now seen corresponding path program 1 times [2021-11-09 09:50:54,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:54,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390920620] [2021-11-09 09:50:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:54,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:54,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:54,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390920620] [2021-11-09 09:50:54,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390920620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:54,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:54,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:54,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974448799] [2021-11-09 09:50:54,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:50:54,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:50:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:50:54,451 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-11-09 09:50:54,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 90 transitions, 475 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:54,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:50:54,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-11-09 09:50:54,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:54,551 INFO L129 PetriNetUnfolder]: 22/148 cut-off events. [2021-11-09 09:50:54,552 INFO L130 PetriNetUnfolder]: For 362/377 co-relation queries the response was YES. [2021-11-09 09:50:54,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 148 events. 22/148 cut-off events. For 362/377 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 393 event pairs, 1 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 384. Up to 19 conditions per place. [2021-11-09 09:50:54,554 INFO L132 encePairwiseOnDemand]: 89/97 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2021-11-09 09:50:54,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 88 transitions, 493 flow [2021-11-09 09:50:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:50:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 09:50:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2021-11-09 09:50:54,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8630338733431517 [2021-11-09 09:50:54,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2021-11-09 09:50:54,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2021-11-09 09:50:54,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:54,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2021-11-09 09:50:54,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:54,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:54,566 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:54,566 INFO L186 Difference]: Start difference. First operand has 184 places, 90 transitions, 475 flow. Second operand 7 states and 586 transitions. [2021-11-09 09:50:54,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 88 transitions, 493 flow [2021-11-09 09:50:54,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 88 transitions, 276 flow, removed 26 selfloop flow, removed 50 redundant places. [2021-11-09 09:50:54,572 INFO L242 Difference]: Finished difference. Result has 109 places, 0 transitions, 0 flow [2021-11-09 09:50:54,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=109, PETRI_TRANSITIONS=0} [2021-11-09 09:50:54,573 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 18 predicate places. [2021-11-09 09:50:54,573 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 0 transitions, 0 flow [2021-11-09 09:50:54,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:54,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:50:54,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-09 09:50:54,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-09 09:50:54,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-09 09:50:54,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-11-09 09:50:54,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:50:54,581 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:54,584 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-09 09:50:54,584 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:50:54,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:50:54 BasicIcfg [2021-11-09 09:50:54,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:50:54,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:50:54,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:50:54,589 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:50:54,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:50:35" (3/4) ... [2021-11-09 09:50:54,594 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 09:50:54,602 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-09 09:50:54,603 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-09 09:50:54,603 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-09 09:50:54,603 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-11-09 09:50:54,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-09 09:50:54,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 09:50:54,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:50:54,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:50:54,654 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:50:54,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:50:54,657 INFO L168 Benchmark]: Toolchain (without parser) took 20739.85 ms. Allocated memory was 77.6 MB in the beginning and 1.9 GB in the end (delta: 1.9 GB). Free memory was 37.7 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 335.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:50:54,657 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:50:54,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 906.22 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 37.5 MB in the beginning and 60.0 MB in the end (delta: -22.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-11-09 09:50:54,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.97 ms. Allocated memory is still 98.6 MB. Free memory was 60.0 MB in the beginning and 57.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:50:54,659 INFO L168 Benchmark]: Boogie Preprocessor took 35.87 ms. Allocated memory is still 98.6 MB. Free memory was 57.9 MB in the beginning and 56.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:50:54,660 INFO L168 Benchmark]: RCFGBuilder took 545.62 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 43.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:50:54,661 INFO L168 Benchmark]: TraceAbstraction took 19116.39 ms. Allocated memory was 98.6 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 43.5 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 318.0 MB. Max. memory is 16.1 GB. [2021-11-09 09:50:54,661 INFO L168 Benchmark]: Witness Printer took 66.45 ms. Allocated memory is still 1.9 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:50:54,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 906.22 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 37.5 MB in the beginning and 60.0 MB in the end (delta: -22.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.97 ms. Allocated memory is still 98.6 MB. Free memory was 60.0 MB in the beginning and 57.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.87 ms. Allocated memory is still 98.6 MB. Free memory was 57.9 MB in the beginning and 56.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 545.62 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 43.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19116.39 ms. Allocated memory was 98.6 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 43.5 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 318.0 MB. Max. memory is 16.1 GB. * Witness Printer took 66.45 ms. Allocated memory is still 1.9 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 126 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 573 SDslu, 807 SDs, 0 SdLazy, 762 SolverSat, 212 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1463occurred in iteration=10, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 798 ConstructedInterpolants, 0 QuantifiedInterpolants, 3502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-09 09:50:54,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef006f-30d5-4a11-9b3e-af99fc04755e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE