./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:47:09,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:47:09,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:47:09,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:47:09,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:47:09,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:47:09,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:47:09,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:47:09,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:47:09,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:47:09,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:47:09,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:47:09,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:47:09,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:47:09,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:47:09,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:47:09,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:47:09,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:47:09,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:47:09,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:47:09,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:47:09,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:47:09,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:47:09,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:47:09,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:47:09,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:47:09,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:47:09,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:47:09,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:47:09,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:47:09,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:47:09,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:47:09,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:47:09,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:47:09,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:47:09,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:47:09,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:47:09,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:47:09,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:47:09,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:47:09,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:47:09,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:47:09,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:47:09,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:47:09,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:47:09,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:47:09,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:47:09,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:47:09,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:47:09,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:47:09,531 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:47:09,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:47:09,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:47:09,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:47:09,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:47:09,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:47:09,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:47:09,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:47:09,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:47:09,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:47:09,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:47:09,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:47:09,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:47:09,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:47:09,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:47:09,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:47:09,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:47:09,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:47:09,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:47:09,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:47:09,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:47:09,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:47:09,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:47:09,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:47:09,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:47:09,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:47:09,538 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_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2021-11-20 06:47:09,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:47:09,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:47:09,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:47:09,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:47:09,921 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:47:09,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-11-20 06:47:10,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/data/e61801307/6ac9aed36c0945b9adb374df9d6a081a/FLAG9cf830961 [2021-11-20 06:47:10,533 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:47:10,534 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-11-20 06:47:10,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/data/e61801307/6ac9aed36c0945b9adb374df9d6a081a/FLAG9cf830961 [2021-11-20 06:47:10,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/data/e61801307/6ac9aed36c0945b9adb374df9d6a081a [2021-11-20 06:47:10,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:47:10,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:47:10,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:47:10,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:47:10,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:47:10,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:47:10" (1/1) ... [2021-11-20 06:47:10,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db2f191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:10, skipping insertion in model container [2021-11-20 06:47:10,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:47:10" (1/1) ... [2021-11-20 06:47:10,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:47:10,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:47:11,159 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2021-11-20 06:47:11,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:47:11,171 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:47:11,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2021-11-20 06:47:11,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:47:11,218 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:47:11,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11 WrapperNode [2021-11-20 06:47:11,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:47:11,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:47:11,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:47:11,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:47:11,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,266 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2021-11-20 06:47:11,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:47:11,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:47:11,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:47:11,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:47:11,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:47:11,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:47:11,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:47:11,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:47:11,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (1/1) ... [2021-11-20 06:47:11,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:47:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:47:11,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:47:11,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_314f729d-da06-419b-a2c0-3c0166b469af/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:47:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:47:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 06:47:11,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 06:47:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 06:47:11,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 06:47:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-20 06:47:11,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-20 06:47:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-20 06:47:11,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-20 06:47:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:47:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:47:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:47:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 06:47:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 06:47:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:47:11,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:47:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:47:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:47:11,405 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 06:47:11,517 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:47:11,519 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:47:11,813 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:47:11,875 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:47:11,875 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:47:11,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:47:11 BoogieIcfgContainer [2021-11-20 06:47:11,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:47:11,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:47:11,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:47:11,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:47:11,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:47:10" (1/3) ... [2021-11-20 06:47:11,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73012e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:47:11, skipping insertion in model container [2021-11-20 06:47:11,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:11" (2/3) ... [2021-11-20 06:47:11,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73012e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:47:11, skipping insertion in model container [2021-11-20 06:47:11,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:47:11" (3/3) ... [2021-11-20 06:47:11,887 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2021-11-20 06:47:11,892 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 06:47:11,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:47:11,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:47:11,902 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 06:47:11,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,980 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,980 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,980 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,980 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,982 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,987 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,987 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,988 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,991 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,992 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,992 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,993 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,993 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:11,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:47:12,000 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-20 06:47:12,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:47:12,065 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:47:12,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-20 06:47:12,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2021-11-20 06:47:12,176 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2021-11-20 06:47:12,176 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-20 06:47:12,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-11-20 06:47:12,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2021-11-20 06:47:12,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2021-11-20 06:47:12,260 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2021-11-20 06:47:12,261 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-20 06:47:12,261 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:12,262 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:12,262 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:12,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash -936094455, now seen corresponding path program 1 times [2021-11-20 06:47:12,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:12,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907157548] [2021-11-20 06:47:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:12,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:13,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:13,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907157548] [2021-11-20 06:47:13,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907157548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:13,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:13,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:47:13,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615917717] [2021-11-20 06:47:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:13,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:47:13,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:47:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:47:13,074 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-11-20 06:47:13,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:13,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:13,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-11-20 06:47:13,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:47:13,286 INFO L129 PetriNetUnfolder]: 67/361 cut-off events. [2021-11-20 06:47:13,287 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2021-11-20 06:47:13,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 361 events. 67/361 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1415 event pairs, 19 based on Foata normal form. 9/362 useless extension candidates. Maximal degree in co-relation 406. Up to 96 conditions per place. [2021-11-20 06:47:13,297 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 17 selfloop transitions, 2 changer transitions 2/124 dead transitions. [2021-11-20 06:47:13,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 124 transitions, 319 flow [2021-11-20 06:47:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:47:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:47:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2021-11-20 06:47:13,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9299516908212561 [2021-11-20 06:47:13,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2021-11-20 06:47:13,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2021-11-20 06:47:13,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:47:13,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2021-11-20 06:47:13,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:13,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 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) [2021-11-20 06:47:13,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 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) [2021-11-20 06:47:13,350 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 385 transitions. [2021-11-20 06:47:13,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 124 transitions, 319 flow [2021-11-20 06:47:13,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 124 transitions, 297 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-20 06:47:13,363 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2021-11-20 06:47:13,365 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2021-11-20 06:47:13,368 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2021-11-20 06:47:13,368 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2021-11-20 06:47:13,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:13,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:13,369 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:13,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:47:13,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:13,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1596816327, now seen corresponding path program 2 times [2021-11-20 06:47:13,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:13,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114972869] [2021-11-20 06:47:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:13,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:13,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:13,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114972869] [2021-11-20 06:47:13,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114972869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:13,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:13,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:47:13,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516073133] [2021-11-20 06:47:13,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:13,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:47:13,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:47:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:47:13,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-11-20 06:47:13,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:13,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:13,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-11-20 06:47:13,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:47:13,758 INFO L129 PetriNetUnfolder]: 51/323 cut-off events. [2021-11-20 06:47:13,758 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-11-20 06:47:13,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 323 events. 51/323 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1138 event pairs, 28 based on Foata normal form. 11/329 useless extension candidates. Maximal degree in co-relation 343. Up to 72 conditions per place. [2021-11-20 06:47:13,764 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2021-11-20 06:47:13,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 121 transitions, 296 flow [2021-11-20 06:47:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:47:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:47:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2021-11-20 06:47:13,767 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2021-11-20 06:47:13,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2021-11-20 06:47:13,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2021-11-20 06:47:13,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:47:13,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2021-11-20 06:47:13,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:13,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 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) [2021-11-20 06:47:13,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 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) [2021-11-20 06:47:13,773 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 3 states and 382 transitions. [2021-11-20 06:47:13,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 121 transitions, 296 flow [2021-11-20 06:47:13,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 121 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 06:47:13,781 INFO L242 Difference]: Finished difference. Result has 126 places, 117 transitions, 254 flow [2021-11-20 06:47:13,781 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=126, PETRI_TRANSITIONS=117} [2021-11-20 06:47:13,782 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2021-11-20 06:47:13,782 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 117 transitions, 254 flow [2021-11-20 06:47:13,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:13,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:13,784 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:13,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:47:13,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1354294515, now seen corresponding path program 3 times [2021-11-20 06:47:13,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:13,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548449734] [2021-11-20 06:47:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:13,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:14,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:14,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548449734] [2021-11-20 06:47:14,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548449734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:14,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:14,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:47:14,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973617474] [2021-11-20 06:47:14,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:14,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:47:14,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:14,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:47:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:47:14,074 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-11-20 06:47:14,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 117 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:14,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:14,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-11-20 06:47:14,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:47:14,172 INFO L129 PetriNetUnfolder]: 48/326 cut-off events. [2021-11-20 06:47:14,172 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2021-11-20 06:47:14,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 326 events. 48/326 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1235 event pairs, 43 based on Foata normal form. 7/321 useless extension candidates. Maximal degree in co-relation 275. Up to 87 conditions per place. [2021-11-20 06:47:14,176 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2021-11-20 06:47:14,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 121 transitions, 304 flow [2021-11-20 06:47:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:47:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:47:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2021-11-20 06:47:14,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2021-11-20 06:47:14,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2021-11-20 06:47:14,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2021-11-20 06:47:14,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:47:14,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2021-11-20 06:47:14,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:14,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 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) [2021-11-20 06:47:14,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 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) [2021-11-20 06:47:14,189 INFO L186 Difference]: Start difference. First operand has 126 places, 117 transitions, 254 flow. Second operand 3 states and 382 transitions. [2021-11-20 06:47:14,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 121 transitions, 304 flow [2021-11-20 06:47:14,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 06:47:14,197 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 258 flow [2021-11-20 06:47:14,198 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2021-11-20 06:47:14,200 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2021-11-20 06:47:14,203 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 258 flow [2021-11-20 06:47:14,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:14,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:14,204 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:14,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:47:14,205 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2054714783, now seen corresponding path program 4 times [2021-11-20 06:47:14,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:14,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566522483] [2021-11-20 06:47:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:14,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:16,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:16,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566522483] [2021-11-20 06:47:16,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566522483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:16,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:16,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 06:47:16,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750103458] [2021-11-20 06:47:16,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:16,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:47:16,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:47:16,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:47:16,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-11-20 06:47:16,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 258 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:16,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:16,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-11-20 06:47:16,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:47:20,535 INFO L129 PetriNetUnfolder]: 4954/9843 cut-off events. [2021-11-20 06:47:20,536 INFO L130 PetriNetUnfolder]: For 1818/1818 co-relation queries the response was YES. [2021-11-20 06:47:20,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19099 conditions, 9843 events. 4954/9843 cut-off events. For 1818/1818 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 78364 event pairs, 1290 based on Foata normal form. 1/9735 useless extension candidates. Maximal degree in co-relation 7573. Up to 2338 conditions per place. [2021-11-20 06:47:20,660 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 180 selfloop transitions, 17 changer transitions 13/279 dead transitions. [2021-11-20 06:47:20,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 279 transitions, 1082 flow [2021-11-20 06:47:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:47:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:47:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1571 transitions. [2021-11-20 06:47:20,668 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7115036231884058 [2021-11-20 06:47:20,668 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1571 transitions. [2021-11-20 06:47:20,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1571 transitions. [2021-11-20 06:47:20,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:47:20,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1571 transitions. [2021-11-20 06:47:20,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.1875) internal successors, (1571), 16 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:20,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:20,689 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:20,690 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 258 flow. Second operand 16 states and 1571 transitions. [2021-11-20 06:47:20,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 279 transitions, 1082 flow [2021-11-20 06:47:20,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 279 transitions, 1078 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 06:47:20,705 INFO L242 Difference]: Finished difference. Result has 154 places, 130 transitions, 381 flow [2021-11-20 06:47:20,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=381, PETRI_PLACES=154, PETRI_TRANSITIONS=130} [2021-11-20 06:47:20,707 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 22 predicate places. [2021-11-20 06:47:20,708 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 130 transitions, 381 flow [2021-11-20 06:47:20,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:20,709 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:20,710 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:20,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:47:20,710 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash 651551893, now seen corresponding path program 5 times [2021-11-20 06:47:20,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:20,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779588992] [2021-11-20 06:47:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:20,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:20,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:20,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779588992] [2021-11-20 06:47:20,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779588992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:20,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:20,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:47:20,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056560312] [2021-11-20 06:47:20,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:20,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:47:20,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:47:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:47:20,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-11-20 06:47:20,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 130 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:20,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:20,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-11-20 06:47:20,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:47:21,080 INFO L129 PetriNetUnfolder]: 226/1236 cut-off events. [2021-11-20 06:47:21,080 INFO L130 PetriNetUnfolder]: For 416/445 co-relation queries the response was YES. [2021-11-20 06:47:21,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2327 conditions, 1236 events. 226/1236 cut-off events. For 416/445 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9595 event pairs, 58 based on Foata normal form. 27/1220 useless extension candidates. Maximal degree in co-relation 2279. Up to 414 conditions per place. [2021-11-20 06:47:21,096 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2021-11-20 06:47:21,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 134 transitions, 430 flow [2021-11-20 06:47:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:47:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:47:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2021-11-20 06:47:21,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2021-11-20 06:47:21,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2021-11-20 06:47:21,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2021-11-20 06:47:21,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:47:21,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2021-11-20 06:47:21,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:21,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 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) [2021-11-20 06:47:21,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 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) [2021-11-20 06:47:21,103 INFO L186 Difference]: Start difference. First operand has 154 places, 130 transitions, 381 flow. Second operand 3 states and 383 transitions. [2021-11-20 06:47:21,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 134 transitions, 430 flow [2021-11-20 06:47:21,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 417 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-11-20 06:47:21,114 INFO L242 Difference]: Finished difference. Result has 148 places, 129 transitions, 370 flow [2021-11-20 06:47:21,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2021-11-20 06:47:21,115 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2021-11-20 06:47:21,115 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 370 flow [2021-11-20 06:47:21,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:21,116 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:21,116 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:21,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:47:21,117 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1242365405, now seen corresponding path program 6 times [2021-11-20 06:47:21,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:21,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080796074] [2021-11-20 06:47:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:21,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:22,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:22,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080796074] [2021-11-20 06:47:22,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080796074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:22,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:22,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 06:47:22,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563921185] [2021-11-20 06:47:22,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:22,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:47:22,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:22,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:47:22,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:47:22,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-11-20 06:47:22,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 370 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:22,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:22,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-11-20 06:47:22,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:47:27,569 INFO L129 PetriNetUnfolder]: 6674/14826 cut-off events. [2021-11-20 06:47:27,569 INFO L130 PetriNetUnfolder]: For 11335/11335 co-relation queries the response was YES. [2021-11-20 06:47:27,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36969 conditions, 14826 events. 6674/14826 cut-off events. For 11335/11335 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 140726 event pairs, 2641 based on Foata normal form. 1/14687 useless extension candidates. Maximal degree in co-relation 26802. Up to 3174 conditions per place. [2021-11-20 06:47:27,766 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 201 selfloop transitions, 27 changer transitions 13/310 dead transitions. [2021-11-20 06:47:27,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 310 transitions, 1555 flow [2021-11-20 06:47:27,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:47:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:47:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1566 transitions. [2021-11-20 06:47:27,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7092391304347826 [2021-11-20 06:47:27,774 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1566 transitions. [2021-11-20 06:47:27,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1566 transitions. [2021-11-20 06:47:27,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:47:27,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1566 transitions. [2021-11-20 06:47:27,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.875) internal successors, (1566), 16 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:27,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:27,788 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:27,788 INFO L186 Difference]: Start difference. First operand has 148 places, 129 transitions, 370 flow. Second operand 16 states and 1566 transitions. [2021-11-20 06:47:27,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 310 transitions, 1555 flow [2021-11-20 06:47:27,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 310 transitions, 1551 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 06:47:27,910 INFO L242 Difference]: Finished difference. Result has 175 places, 152 transitions, 647 flow [2021-11-20 06:47:27,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=647, PETRI_PLACES=175, PETRI_TRANSITIONS=152} [2021-11-20 06:47:27,913 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2021-11-20 06:47:27,914 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 152 transitions, 647 flow [2021-11-20 06:47:27,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:27,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:27,916 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:27,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:47:27,917 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1131171131, now seen corresponding path program 7 times [2021-11-20 06:47:27,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:27,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020174737] [2021-11-20 06:47:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:27,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:29,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:29,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020174737] [2021-11-20 06:47:29,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020174737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:29,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:29,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 06:47:29,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061844640] [2021-11-20 06:47:29,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:29,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:47:29,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:29,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:47:29,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:47:29,267 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-11-20 06:47:29,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 152 transitions, 647 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:29,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:29,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-11-20 06:47:29,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:47:35,656 INFO L129 PetriNetUnfolder]: 12734/31039 cut-off events. [2021-11-20 06:47:35,657 INFO L130 PetriNetUnfolder]: For 61063/61063 co-relation queries the response was YES. [2021-11-20 06:47:35,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90108 conditions, 31039 events. 12734/31039 cut-off events. For 61063/61063 co-relation queries the response was YES. Maximal size of possible extension queue 1766. Compared 356559 event pairs, 3437 based on Foata normal form. 1/30801 useless extension candidates. Maximal degree in co-relation 89632. Up to 5840 conditions per place. [2021-11-20 06:47:36,179 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 298 selfloop transitions, 36 changer transitions 8/411 dead transitions. [2021-11-20 06:47:36,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 411 transitions, 2852 flow [2021-11-20 06:47:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:47:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:47:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1598 transitions. [2021-11-20 06:47:36,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7237318840579711 [2021-11-20 06:47:36,186 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1598 transitions. [2021-11-20 06:47:36,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1598 transitions. [2021-11-20 06:47:36,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:47:36,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1598 transitions. [2021-11-20 06:47:36,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.875) internal successors, (1598), 16 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:36,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:36,202 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:36,202 INFO L186 Difference]: Start difference. First operand has 175 places, 152 transitions, 647 flow. Second operand 16 states and 1598 transitions. [2021-11-20 06:47:36,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 411 transitions, 2852 flow [2021-11-20 06:47:37,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 411 transitions, 2758 flow, removed 45 selfloop flow, removed 5 redundant places. [2021-11-20 06:47:37,553 INFO L242 Difference]: Finished difference. Result has 195 places, 177 transitions, 1028 flow [2021-11-20 06:47:37,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1028, PETRI_PLACES=195, PETRI_TRANSITIONS=177} [2021-11-20 06:47:37,554 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 63 predicate places. [2021-11-20 06:47:37,554 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 177 transitions, 1028 flow [2021-11-20 06:47:37,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:37,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:37,556 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:37,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:47:37,556 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:37,557 INFO L85 PathProgramCache]: Analyzing trace with hash -343566183, now seen corresponding path program 8 times [2021-11-20 06:47:37,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:37,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052201218] [2021-11-20 06:47:37,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:37,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:38,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:38,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052201218] [2021-11-20 06:47:38,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052201218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:38,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:38,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 06:47:38,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146179283] [2021-11-20 06:47:38,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:38,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:47:38,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:38,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:47:38,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:47:38,742 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-11-20 06:47:38,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 177 transitions, 1028 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:38,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:38,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-11-20 06:47:38,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:47:49,300 INFO L129 PetriNetUnfolder]: 17331/45503 cut-off events. [2021-11-20 06:47:49,301 INFO L130 PetriNetUnfolder]: For 154013/154013 co-relation queries the response was YES. [2021-11-20 06:47:49,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146507 conditions, 45503 events. 17331/45503 cut-off events. For 154013/154013 co-relation queries the response was YES. Maximal size of possible extension queue 2891. Compared 585219 event pairs, 5038 based on Foata normal form. 1/44990 useless extension candidates. Maximal degree in co-relation 145636. Up to 10239 conditions per place. [2021-11-20 06:47:49,914 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 296 selfloop transitions, 47 changer transitions 8/420 dead transitions. [2021-11-20 06:47:49,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 420 transitions, 3353 flow [2021-11-20 06:47:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:47:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:47:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2021-11-20 06:47:49,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2021-11-20 06:47:49,922 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2021-11-20 06:47:49,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2021-11-20 06:47:49,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:47:49,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2021-11-20 06:47:49,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.8125) internal successors, (1597), 16 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:49,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:49,938 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:49,939 INFO L186 Difference]: Start difference. First operand has 195 places, 177 transitions, 1028 flow. Second operand 16 states and 1597 transitions. [2021-11-20 06:47:49,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 420 transitions, 3353 flow [2021-11-20 06:47:52,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 420 transitions, 3256 flow, removed 45 selfloop flow, removed 4 redundant places. [2021-11-20 06:47:53,001 INFO L242 Difference]: Finished difference. Result has 217 places, 206 transitions, 1544 flow [2021-11-20 06:47:53,002 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1544, PETRI_PLACES=217, PETRI_TRANSITIONS=206} [2021-11-20 06:47:53,003 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 85 predicate places. [2021-11-20 06:47:53,003 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 206 transitions, 1544 flow [2021-11-20 06:47:53,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:53,005 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:47:53,005 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:53,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:47:53,006 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:47:53,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:53,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1442699581, now seen corresponding path program 9 times [2021-11-20 06:47:53,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:53,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082966767] [2021-11-20 06:47:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:53,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:47:54,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:54,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082966767] [2021-11-20 06:47:54,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082966767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:54,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:54,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 06:47:54,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068239935] [2021-11-20 06:47:54,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:54,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:47:54,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:47:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:47:54,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-11-20 06:47:54,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 206 transitions, 1544 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:47:54,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:47:54,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-11-20 06:47:54,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:48:13,135 INFO L129 PetriNetUnfolder]: 25412/73374 cut-off events. [2021-11-20 06:48:13,136 INFO L130 PetriNetUnfolder]: For 379529/379537 co-relation queries the response was YES. [2021-11-20 06:48:13,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261490 conditions, 73374 events. 25412/73374 cut-off events. For 379529/379537 co-relation queries the response was YES. Maximal size of possible extension queue 5092. Compared 1059841 event pairs, 6945 based on Foata normal form. 3/72592 useless extension candidates. Maximal degree in co-relation 258798. Up to 15776 conditions per place. [2021-11-20 06:48:14,198 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 451 selfloop transitions, 77 changer transitions 8/605 dead transitions. [2021-11-20 06:48:14,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 605 transitions, 6572 flow [2021-11-20 06:48:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:48:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:48:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1593 transitions. [2021-11-20 06:48:14,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7214673913043478 [2021-11-20 06:48:14,209 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1593 transitions. [2021-11-20 06:48:14,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1593 transitions. [2021-11-20 06:48:14,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:48:14,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1593 transitions. [2021-11-20 06:48:14,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.5625) internal successors, (1593), 16 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:14,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:14,227 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:14,227 INFO L186 Difference]: Start difference. First operand has 217 places, 206 transitions, 1544 flow. Second operand 16 states and 1593 transitions. [2021-11-20 06:48:14,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 605 transitions, 6572 flow [2021-11-20 06:48:28,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 605 transitions, 6224 flow, removed 169 selfloop flow, removed 4 redundant places. [2021-11-20 06:48:28,493 INFO L242 Difference]: Finished difference. Result has 239 places, 258 transitions, 2461 flow [2021-11-20 06:48:28,493 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2461, PETRI_PLACES=239, PETRI_TRANSITIONS=258} [2021-11-20 06:48:28,494 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 107 predicate places. [2021-11-20 06:48:28,494 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 258 transitions, 2461 flow [2021-11-20 06:48:28,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:28,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:48:28,496 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:28,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:48:28,496 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 06:48:28,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash -211585563, now seen corresponding path program 10 times [2021-11-20 06:48:28,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:28,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898697130] [2021-11-20 06:48:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:28,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:29,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:29,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898697130] [2021-11-20 06:48:29,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898697130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:29,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:29,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 06:48:29,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432737796] [2021-11-20 06:48:29,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:29,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:48:29,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:48:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:48:29,630 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-11-20 06:48:29,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 258 transitions, 2461 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:29,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:48:29,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-11-20 06:48:29,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand