./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be --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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:13:58,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:13:58,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:13:58,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:13:58,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:13:58,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:13:58,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:13:58,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:13:58,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:13:58,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:13:58,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:13:58,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:13:58,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:13:58,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:13:58,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:13:58,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:13:58,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:13:58,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:13:58,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:13:58,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:13:58,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:13:58,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:13:58,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:13:58,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:13:58,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:13:58,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:13:58,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:13:58,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:13:58,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:13:58,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:13:58,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:13:58,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:13:58,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:13:58,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:13:58,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:13:58,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:13:58,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:13:58,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:13:58,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:13:58,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:13:58,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:13:58,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:13:58,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:13:58,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:13:58,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:13:58,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:13:58,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:13:58,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:13:58,278 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:13:58,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:13:58,279 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:13:58,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:13:58,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:13:58,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:13:58,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:13:58,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:13:58,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:13:58,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:13:58,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:13:58,282 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:13:58,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:13:58,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:13:58,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:13:58,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:13:58,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:13:58,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:13:58,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:13:58,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:13:58,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:13:58,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:13:58,284 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:13:58,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:13:58,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:13:58,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:13:58,287 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_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2021-10-21 19:13:58,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:13:58,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:13:58,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:13:58,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:13:58,592 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:13:58,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2021-10-21 19:13:58,676 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/data/d7308931b/f2da2f440ba146a9999ed8950804da67/FLAG8254fd861 [2021-10-21 19:13:59,162 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:13:59,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2021-10-21 19:13:59,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/data/d7308931b/f2da2f440ba146a9999ed8950804da67/FLAG8254fd861 [2021-10-21 19:13:59,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/data/d7308931b/f2da2f440ba146a9999ed8950804da67 [2021-10-21 19:13:59,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:13:59,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:13:59,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:13:59,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:13:59,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:13:59,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b86c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59, skipping insertion in model container [2021-10-21 19:13:59,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:13:59,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:13:59,729 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2021-10-21 19:13:59,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:13:59,746 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:13:59,778 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2021-10-21 19:13:59,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:13:59,799 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:13:59,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59 WrapperNode [2021-10-21 19:13:59,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:13:59,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:13:59,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:13:59,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:13:59,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:13:59,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:13:59,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:13:59,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:13:59,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:13:59,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:13:59,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:13:59,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:13:59,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (1/1) ... [2021-10-21 19:13:59,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:13:59,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:59,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:59,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:14:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 19:14:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 19:14:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-21 19:14:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-21 19:14:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-21 19:14:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-21 19:14:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:14:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:14:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:14:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 19:14:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 19:14:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:14:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:14:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:14:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:14:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:14:00,008 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:14:01,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:14:01,292 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-10-21 19:14:01,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:01 BoogieIcfgContainer [2021-10-21 19:14:01,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:14:01,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:14:01,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:14:01,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:14:01,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:13:59" (1/3) ... [2021-10-21 19:14:01,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26328fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:14:01, skipping insertion in model container [2021-10-21 19:14:01,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:59" (2/3) ... [2021-10-21 19:14:01,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26328fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:14:01, skipping insertion in model container [2021-10-21 19:14:01,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:01" (3/3) ... [2021-10-21 19:14:01,304 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2021-10-21 19:14:01,310 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:14:01,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:14:01,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:14:01,311 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:14:01,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,355 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,364 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,366 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,367 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,369 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,371 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,372 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,374 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,374 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,376 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,376 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,377 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,377 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,377 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,379 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,379 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,379 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,379 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,383 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,386 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,388 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,389 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,389 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,389 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,389 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,390 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,390 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,390 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,390 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,397 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,397 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,397 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,397 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,397 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,397 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,398 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,398 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,398 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,398 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,398 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,399 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,399 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,399 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,399 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,399 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,400 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,400 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,400 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,400 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,400 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,400 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,406 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,407 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,407 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,407 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,407 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,407 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,408 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,408 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,408 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,408 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,410 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,413 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,414 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,414 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,414 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,414 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,414 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,414 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,415 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,415 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,415 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:14:01,421 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-21 19:14:01,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:14:01,501 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 [2021-10-21 19:14:01,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 19:14:01,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 230 transitions, 484 flow [2021-10-21 19:14:01,669 INFO L129 PetriNetUnfolder]: 19/227 cut-off events. [2021-10-21 19:14:01,670 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:14:01,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 227 events. 19/227 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2021-10-21 19:14:01,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 230 transitions, 484 flow [2021-10-21 19:14:01,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 217 transitions, 452 flow [2021-10-21 19:14:01,780 INFO L129 PetriNetUnfolder]: 19/216 cut-off events. [2021-10-21 19:14:01,781 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:14:01,781 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:01,782 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:01,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:01,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:01,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1820746027, now seen corresponding path program 1 times [2021-10-21 19:14:01,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:01,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482162712] [2021-10-21 19:14:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:01,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:02,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:02,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482162712] [2021-10-21 19:14:02,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482162712] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:02,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:02,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:14:02,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058158487] [2021-10-21 19:14:02,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:14:02,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:14:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:14:02,130 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 230 [2021-10-21 19:14:02,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 217 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 217.5) internal successors, (435), 2 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:02,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 230 [2021-10-21 19:14:02,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:02,188 INFO L129 PetriNetUnfolder]: 6/204 cut-off events. [2021-10-21 19:14:02,189 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:14:02,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 204 events. 6/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 13/204 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2021-10-21 19:14:02,193 INFO L132 encePairwiseOnDemand]: 217/230 looper letters, 0 selfloop transitions, 0 changer transitions 7/204 dead transitions. [2021-10-21 19:14:02,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 204 transitions, 426 flow [2021-10-21 19:14:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:14:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-21 19:14:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 445 transitions. [2021-10-21 19:14:02,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.967391304347826 [2021-10-21 19:14:02,216 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 445 transitions. [2021-10-21 19:14:02,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 445 transitions. [2021-10-21 19:14:02,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:02,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 445 transitions. [2021-10-21 19:14:02,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 222.5) internal successors, (445), 2 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,240 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,242 INFO L186 Difference]: Start difference. First operand has 208 places, 217 transitions, 452 flow. Second operand 2 states and 445 transitions. [2021-10-21 19:14:02,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 204 transitions, 426 flow [2021-10-21 19:14:02,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 204 transitions, 414 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-21 19:14:02,254 INFO L242 Difference]: Finished difference. Result has 203 places, 197 transitions, 400 flow [2021-10-21 19:14:02,257 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=400, PETRI_PLACES=203, PETRI_TRANSITIONS=197} [2021-10-21 19:14:02,258 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, -5 predicate places. [2021-10-21 19:14:02,259 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 197 transitions, 400 flow [2021-10-21 19:14:02,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 217.5) internal successors, (435), 2 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,263 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:02,264 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:02,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:14:02,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:02,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:02,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1190029509, now seen corresponding path program 1 times [2021-10-21 19:14:02,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:02,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735342451] [2021-10-21 19:14:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:02,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:02,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:02,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735342451] [2021-10-21 19:14:02,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735342451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:02,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:02,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:14:02,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299532493] [2021-10-21 19:14:02,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:14:02,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:14:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:14:02,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 230 [2021-10-21 19:14:02,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 197 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:02,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 230 [2021-10-21 19:14:02,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:02,903 INFO L129 PetriNetUnfolder]: 29/274 cut-off events. [2021-10-21 19:14:02,903 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:14:02,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 274 events. 29/274 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 440 event pairs, 5 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 340. Up to 36 conditions per place. [2021-10-21 19:14:02,907 INFO L132 encePairwiseOnDemand]: 223/230 looper letters, 33 selfloop transitions, 4 changer transitions 3/203 dead transitions. [2021-10-21 19:14:02,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 203 transitions, 492 flow [2021-10-21 19:14:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:14:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-21 19:14:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 916 transitions. [2021-10-21 19:14:02,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7965217391304348 [2021-10-21 19:14:02,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 916 transitions. [2021-10-21 19:14:02,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 916 transitions. [2021-10-21 19:14:02,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:02,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 916 transitions. [2021-10-21 19:14:02,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.2) internal successors, (916), 5 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,924 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,924 INFO L186 Difference]: Start difference. First operand has 203 places, 197 transitions, 400 flow. Second operand 5 states and 916 transitions. [2021-10-21 19:14:02,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 203 transitions, 492 flow [2021-10-21 19:14:02,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 203 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-21 19:14:02,938 INFO L242 Difference]: Finished difference. Result has 203 places, 200 transitions, 430 flow [2021-10-21 19:14:02,939 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=203, PETRI_TRANSITIONS=200} [2021-10-21 19:14:02,939 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, -5 predicate places. [2021-10-21 19:14:02,939 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 200 transitions, 430 flow [2021-10-21 19:14:02,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:02,941 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:02,941 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:02,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:14:02,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:02,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1279561381, now seen corresponding path program 1 times [2021-10-21 19:14:02,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:02,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120972405] [2021-10-21 19:14:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:02,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:03,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:03,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120972405] [2021-10-21 19:14:03,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120972405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:03,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:03,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:14:03,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544986788] [2021-10-21 19:14:03,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:03,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:03,135 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 230 [2021-10-21 19:14:03,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 200 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:03,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 230 [2021-10-21 19:14:03,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:03,351 INFO L129 PetriNetUnfolder]: 45/451 cut-off events. [2021-10-21 19:14:03,351 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-10-21 19:14:03,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 451 events. 45/451 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1149 event pairs, 8 based on Foata normal form. 4/420 useless extension candidates. Maximal degree in co-relation 598. Up to 63 conditions per place. [2021-10-21 19:14:03,357 INFO L132 encePairwiseOnDemand]: 218/230 looper letters, 39 selfloop transitions, 8 changer transitions 25/229 dead transitions. [2021-10-21 19:14:03,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 229 transitions, 632 flow [2021-10-21 19:14:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:14:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:14:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1640 transitions. [2021-10-21 19:14:03,363 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7922705314009661 [2021-10-21 19:14:03,363 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1640 transitions. [2021-10-21 19:14:03,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1640 transitions. [2021-10-21 19:14:03,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:03,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1640 transitions. [2021-10-21 19:14:03,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.22222222222223) internal successors, (1640), 9 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,379 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,379 INFO L186 Difference]: Start difference. First operand has 203 places, 200 transitions, 430 flow. Second operand 9 states and 1640 transitions. [2021-10-21 19:14:03,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 229 transitions, 632 flow [2021-10-21 19:14:03,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 229 transitions, 624 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-21 19:14:03,388 INFO L242 Difference]: Finished difference. Result has 208 places, 201 transitions, 456 flow [2021-10-21 19:14:03,389 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=456, PETRI_PLACES=208, PETRI_TRANSITIONS=201} [2021-10-21 19:14:03,389 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 0 predicate places. [2021-10-21 19:14:03,390 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 201 transitions, 456 flow [2021-10-21 19:14:03,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:03,391 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:03,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:14:03,392 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:03,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:03,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1087621387, now seen corresponding path program 1 times [2021-10-21 19:14:03,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:03,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147336430] [2021-10-21 19:14:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:03,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:14:03,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:03,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147336430] [2021-10-21 19:14:03,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147336430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:03,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:03,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:14:03,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571702872] [2021-10-21 19:14:03,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:14:03,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:03,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:14:03,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:14:03,633 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 230 [2021-10-21 19:14:03,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 201 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:03,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 230 [2021-10-21 19:14:03,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:03,716 INFO L129 PetriNetUnfolder]: 31/321 cut-off events. [2021-10-21 19:14:03,716 INFO L130 PetriNetUnfolder]: For 26/27 co-relation queries the response was YES. [2021-10-21 19:14:03,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 321 events. 31/321 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 687 event pairs, 9 based on Foata normal form. 6/305 useless extension candidates. Maximal degree in co-relation 407. Up to 28 conditions per place. [2021-10-21 19:14:03,721 INFO L132 encePairwiseOnDemand]: 227/230 looper letters, 5 selfloop transitions, 2 changer transitions 0/201 dead transitions. [2021-10-21 19:14:03,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 201 transitions, 468 flow [2021-10-21 19:14:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:14:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:14:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2021-10-21 19:14:03,724 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246376811594202 [2021-10-21 19:14:03,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2021-10-21 19:14:03,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2021-10-21 19:14:03,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:03,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2021-10-21 19:14:03,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,731 INFO L186 Difference]: Start difference. First operand has 208 places, 201 transitions, 456 flow. Second operand 3 states and 638 transitions. [2021-10-21 19:14:03,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 201 transitions, 468 flow [2021-10-21 19:14:03,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 201 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-21 19:14:03,738 INFO L242 Difference]: Finished difference. Result has 204 places, 201 transitions, 450 flow [2021-10-21 19:14:03,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=204, PETRI_TRANSITIONS=201} [2021-10-21 19:14:03,738 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, -4 predicate places. [2021-10-21 19:14:03,739 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 201 transitions, 450 flow [2021-10-21 19:14:03,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,740 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:03,740 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:03,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:14:03,741 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:03,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:03,741 INFO L82 PathProgramCache]: Analyzing trace with hash 534236495, now seen corresponding path program 1 times [2021-10-21 19:14:03,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:03,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309746201] [2021-10-21 19:14:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:03,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:14:03,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:03,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309746201] [2021-10-21 19:14:03,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309746201] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:03,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:03,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:14:03,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578435815] [2021-10-21 19:14:03,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:14:03,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:14:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:14:03,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 230 [2021-10-21 19:14:03,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 201 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:03,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:03,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 230 [2021-10-21 19:14:03,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:04,055 INFO L129 PetriNetUnfolder]: 38/343 cut-off events. [2021-10-21 19:14:04,056 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-10-21 19:14:04,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 343 events. 38/343 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 804 event pairs, 11 based on Foata normal form. 3/319 useless extension candidates. Maximal degree in co-relation 452. Up to 32 conditions per place. [2021-10-21 19:14:04,059 INFO L132 encePairwiseOnDemand]: 223/230 looper letters, 4 selfloop transitions, 6 changer transitions 0/201 dead transitions. [2021-10-21 19:14:04,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 201 transitions, 468 flow [2021-10-21 19:14:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:14:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:14:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 839 transitions. [2021-10-21 19:14:04,063 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9119565217391304 [2021-10-21 19:14:04,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 839 transitions. [2021-10-21 19:14:04,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 839 transitions. [2021-10-21 19:14:04,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:04,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 839 transitions. [2021-10-21 19:14:04,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,072 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,072 INFO L186 Difference]: Start difference. First operand has 204 places, 201 transitions, 450 flow. Second operand 4 states and 839 transitions. [2021-10-21 19:14:04,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 201 transitions, 468 flow [2021-10-21 19:14:04,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 201 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:14:04,079 INFO L242 Difference]: Finished difference. Result has 207 places, 201 transitions, 464 flow [2021-10-21 19:14:04,079 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=464, PETRI_PLACES=207, PETRI_TRANSITIONS=201} [2021-10-21 19:14:04,080 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, -1 predicate places. [2021-10-21 19:14:04,080 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 201 transitions, 464 flow [2021-10-21 19:14:04,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,081 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:04,081 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:04,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:14:04,082 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash 578461014, now seen corresponding path program 1 times [2021-10-21 19:14:04,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:04,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293710756] [2021-10-21 19:14:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:04,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:14:04,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:04,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293710756] [2021-10-21 19:14:04,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293710756] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:04,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:04,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:14:04,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819642584] [2021-10-21 19:14:04,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:04,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:04,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 230 [2021-10-21 19:14:04,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 201 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 181.16666666666666) internal successors, (1087), 6 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:04,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 230 [2021-10-21 19:14:04,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:04,421 INFO L129 PetriNetUnfolder]: 44/464 cut-off events. [2021-10-21 19:14:04,421 INFO L130 PetriNetUnfolder]: For 57/62 co-relation queries the response was YES. [2021-10-21 19:14:04,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 464 events. 44/464 cut-off events. For 57/62 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1361 event pairs, 13 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 668. Up to 37 conditions per place. [2021-10-21 19:14:04,426 INFO L132 encePairwiseOnDemand]: 220/230 looper letters, 38 selfloop transitions, 8 changer transitions 13/218 dead transitions. [2021-10-21 19:14:04,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 218 transitions, 616 flow [2021-10-21 19:14:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:14:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:14:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1642 transitions. [2021-10-21 19:14:04,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7932367149758454 [2021-10-21 19:14:04,432 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1642 transitions. [2021-10-21 19:14:04,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1642 transitions. [2021-10-21 19:14:04,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:04,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1642 transitions. [2021-10-21 19:14:04,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,446 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,446 INFO L186 Difference]: Start difference. First operand has 207 places, 201 transitions, 464 flow. Second operand 9 states and 1642 transitions. [2021-10-21 19:14:04,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 218 transitions, 616 flow [2021-10-21 19:14:04,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 218 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-21 19:14:04,453 INFO L242 Difference]: Finished difference. Result has 215 places, 202 transitions, 482 flow [2021-10-21 19:14:04,454 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2021-10-21 19:14:04,454 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 7 predicate places. [2021-10-21 19:14:04,454 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 482 flow [2021-10-21 19:14:04,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.16666666666666) internal successors, (1087), 6 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,455 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:04,456 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:04,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:14:04,456 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:04,457 INFO L82 PathProgramCache]: Analyzing trace with hash 604032035, now seen corresponding path program 1 times [2021-10-21 19:14:04,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:04,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859124977] [2021-10-21 19:14:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:04,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:14:04,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:04,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859124977] [2021-10-21 19:14:04,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859124977] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:04,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:04,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:14:04,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296220470] [2021-10-21 19:14:04,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:04,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:04,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:04,572 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 230 [2021-10-21 19:14:04,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 202 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:04,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 230 [2021-10-21 19:14:04,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:04,769 INFO L129 PetriNetUnfolder]: 39/415 cut-off events. [2021-10-21 19:14:04,769 INFO L130 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2021-10-21 19:14:04,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 415 events. 39/415 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1113 event pairs, 12 based on Foata normal form. 2/386 useless extension candidates. Maximal degree in co-relation 609. Up to 34 conditions per place. [2021-10-21 19:14:04,774 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 41 selfloop transitions, 6 changer transitions 1/207 dead transitions. [2021-10-21 19:14:04,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 588 flow [2021-10-21 19:14:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:14:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:14:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1278 transitions. [2021-10-21 19:14:04,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7937888198757764 [2021-10-21 19:14:04,779 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1278 transitions. [2021-10-21 19:14:04,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1278 transitions. [2021-10-21 19:14:04,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:04,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1278 transitions. [2021-10-21 19:14:04,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,803 INFO L186 Difference]: Start difference. First operand has 215 places, 202 transitions, 482 flow. Second operand 7 states and 1278 transitions. [2021-10-21 19:14:04,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 588 flow [2021-10-21 19:14:04,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 207 transitions, 570 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-10-21 19:14:04,814 INFO L242 Difference]: Finished difference. Result has 215 places, 203 transitions, 486 flow [2021-10-21 19:14:04,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2021-10-21 19:14:04,815 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 7 predicate places. [2021-10-21 19:14:04,815 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 486 flow [2021-10-21 19:14:04,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:04,816 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:04,817 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:04,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:14:04,817 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:04,818 INFO L82 PathProgramCache]: Analyzing trace with hash -808724674, now seen corresponding path program 1 times [2021-10-21 19:14:04,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:04,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858998498] [2021-10-21 19:14:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:04,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:14:05,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:05,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858998498] [2021-10-21 19:14:05,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858998498] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:05,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:05,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:14:05,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007731414] [2021-10-21 19:14:05,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:14:05,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:14:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:14:05,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 230 [2021-10-21 19:14:05,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:05,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:05,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 230 [2021-10-21 19:14:05,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:05,139 INFO L129 PetriNetUnfolder]: 29/300 cut-off events. [2021-10-21 19:14:05,139 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2021-10-21 19:14:05,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 300 events. 29/300 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 418 event pairs, 7 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 418. Up to 29 conditions per place. [2021-10-21 19:14:05,144 INFO L132 encePairwiseOnDemand]: 223/230 looper letters, 7 selfloop transitions, 6 changer transitions 0/204 dead transitions. [2021-10-21 19:14:05,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 204 transitions, 516 flow [2021-10-21 19:14:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:14:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:14:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2021-10-21 19:14:05,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9101449275362319 [2021-10-21 19:14:05,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2021-10-21 19:14:05,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2021-10-21 19:14:05,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:05,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2021-10-21 19:14:05,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:05,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:05,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:05,154 INFO L186 Difference]: Start difference. First operand has 215 places, 203 transitions, 486 flow. Second operand 3 states and 628 transitions. [2021-10-21 19:14:05,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 204 transitions, 516 flow [2021-10-21 19:14:05,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 204 transitions, 504 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-10-21 19:14:05,161 INFO L242 Difference]: Finished difference. Result has 212 places, 204 transitions, 500 flow [2021-10-21 19:14:05,161 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2021-10-21 19:14:05,162 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 4 predicate places. [2021-10-21 19:14:05,162 INFO L470 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 500 flow [2021-10-21 19:14:05,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:05,163 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:05,163 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:05,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:14:05,163 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:05,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:05,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1639584990, now seen corresponding path program 1 times [2021-10-21 19:14:05,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:05,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777609620] [2021-10-21 19:14:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:05,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:14:05,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:05,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777609620] [2021-10-21 19:14:05,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777609620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:14:05,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785029413] [2021-10-21 19:14:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:05,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:14:05,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:14:05,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:14:05,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:14:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:05,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:14:05,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:14:06,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785029413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:14:06,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:14:06,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-21 19:14:06,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752316919] [2021-10-21 19:14:06,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:14:06,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:14:06,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:14:06,413 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 230 [2021-10-21 19:14:06,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 500 flow. Second operand has 13 states, 13 states have (on average 175.15384615384616) internal successors, (2277), 13 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:06,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:06,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 230 [2021-10-21 19:14:06,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:06,827 INFO L129 PetriNetUnfolder]: 27/424 cut-off events. [2021-10-21 19:14:06,827 INFO L130 PetriNetUnfolder]: For 65/71 co-relation queries the response was YES. [2021-10-21 19:14:06,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 424 events. 27/424 cut-off events. For 65/71 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 936 event pairs, 8 based on Foata normal form. 7/412 useless extension candidates. Maximal degree in co-relation 632. Up to 28 conditions per place. [2021-10-21 19:14:06,832 INFO L132 encePairwiseOnDemand]: 213/230 looper letters, 43 selfloop transitions, 14 changer transitions 16/228 dead transitions. [2021-10-21 19:14:06,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 228 transitions, 708 flow [2021-10-21 19:14:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:14:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-21 19:14:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2465 transitions. [2021-10-21 19:14:06,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765527950310559 [2021-10-21 19:14:06,842 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2465 transitions. [2021-10-21 19:14:06,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2465 transitions. [2021-10-21 19:14:06,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:06,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2465 transitions. [2021-10-21 19:14:06,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 176.07142857142858) internal successors, (2465), 14 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:06,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:06,865 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:06,865 INFO L186 Difference]: Start difference. First operand has 212 places, 204 transitions, 500 flow. Second operand 14 states and 2465 transitions. [2021-10-21 19:14:06,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 228 transitions, 708 flow [2021-10-21 19:14:06,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 228 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:14:06,874 INFO L242 Difference]: Finished difference. Result has 230 places, 207 transitions, 564 flow [2021-10-21 19:14:06,875 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=564, PETRI_PLACES=230, PETRI_TRANSITIONS=207} [2021-10-21 19:14:06,875 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 22 predicate places. [2021-10-21 19:14:06,875 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 207 transitions, 564 flow [2021-10-21 19:14:06,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 175.15384615384616) internal successors, (2277), 13 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:06,877 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:06,877 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:06,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:07,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:14:07,092 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:07,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:07,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1094306085, now seen corresponding path program 2 times [2021-10-21 19:14:07,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:07,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928434529] [2021-10-21 19:14:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:07,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:14:07,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:07,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928434529] [2021-10-21 19:14:07,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928434529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:14:07,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635917379] [2021-10-21 19:14:07,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:14:07,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:14:07,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:14:07,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:14:07,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:14:07,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:14:07,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:14:07,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:14:07,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-21 19:14:08,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635917379] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:08,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:14:08,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-10-21 19:14:08,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528624142] [2021-10-21 19:14:08,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:14:08,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:08,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:14:08,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:14:08,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 230 [2021-10-21 19:14:08,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 207 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:08,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 230 [2021-10-21 19:14:08,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:08,417 INFO L129 PetriNetUnfolder]: 71/492 cut-off events. [2021-10-21 19:14:08,417 INFO L130 PetriNetUnfolder]: For 220/232 co-relation queries the response was YES. [2021-10-21 19:14:08,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 492 events. 71/492 cut-off events. For 220/232 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1491 event pairs, 19 based on Foata normal form. 7/460 useless extension candidates. Maximal degree in co-relation 835. Up to 58 conditions per place. [2021-10-21 19:14:08,422 INFO L132 encePairwiseOnDemand]: 225/230 looper letters, 7 selfloop transitions, 9 changer transitions 0/213 dead transitions. [2021-10-21 19:14:08,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 213 transitions, 624 flow [2021-10-21 19:14:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:14:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:14:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 848 transitions. [2021-10-21 19:14:08,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9217391304347826 [2021-10-21 19:14:08,426 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 848 transitions. [2021-10-21 19:14:08,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 848 transitions. [2021-10-21 19:14:08,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:08,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 848 transitions. [2021-10-21 19:14:08,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,434 INFO L186 Difference]: Start difference. First operand has 230 places, 207 transitions, 564 flow. Second operand 4 states and 848 transitions. [2021-10-21 19:14:08,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 213 transitions, 624 flow [2021-10-21 19:14:08,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 213 transitions, 580 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-10-21 19:14:08,442 INFO L242 Difference]: Finished difference. Result has 222 places, 213 transitions, 593 flow [2021-10-21 19:14:08,443 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=593, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2021-10-21 19:14:08,443 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 14 predicate places. [2021-10-21 19:14:08,443 INFO L470 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 593 flow [2021-10-21 19:14:08,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:08,445 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:08,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:08,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:14:08,673 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:08,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1661064449, now seen corresponding path program 1 times [2021-10-21 19:14:08,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:08,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213847476] [2021-10-21 19:14:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:08,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:14:08,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:08,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213847476] [2021-10-21 19:14:08,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213847476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:14:08,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965545739] [2021-10-21 19:14:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:08,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:14:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:14:08,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:14:08,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:14:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:09,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:14:09,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:14:09,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965545739] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:14:09,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:14:09,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-21 19:14:09,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759384638] [2021-10-21 19:14:09,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:14:09,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:09,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:14:09,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:14:09,823 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 230 [2021-10-21 19:14:09,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 593 flow. Second operand has 13 states, 13 states have (on average 173.3846153846154) internal successors, (2254), 13 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:09,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:09,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 230 [2021-10-21 19:14:09,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:14:10,201 INFO L129 PetriNetUnfolder]: 73/648 cut-off events. [2021-10-21 19:14:10,201 INFO L130 PetriNetUnfolder]: For 387/407 co-relation queries the response was YES. [2021-10-21 19:14:10,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 648 events. 73/648 cut-off events. For 387/407 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1995 event pairs, 19 based on Foata normal form. 5/611 useless extension candidates. Maximal degree in co-relation 1197. Up to 105 conditions per place. [2021-10-21 19:14:10,208 INFO L132 encePairwiseOnDemand]: 213/230 looper letters, 58 selfloop transitions, 11 changer transitions 34/255 dead transitions. [2021-10-21 19:14:10,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 255 transitions, 941 flow [2021-10-21 19:14:10,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:14:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-21 19:14:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2452 transitions. [2021-10-21 19:14:10,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614906832298136 [2021-10-21 19:14:10,218 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2452 transitions. [2021-10-21 19:14:10,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2452 transitions. [2021-10-21 19:14:10,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:14:10,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2452 transitions. [2021-10-21 19:14:10,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 175.14285714285714) internal successors, (2452), 14 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,241 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,241 INFO L186 Difference]: Start difference. First operand has 222 places, 213 transitions, 593 flow. Second operand 14 states and 2452 transitions. [2021-10-21 19:14:10,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 255 transitions, 941 flow [2021-10-21 19:14:10,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 255 transitions, 917 flow, removed 12 selfloop flow, removed 0 redundant places. [2021-10-21 19:14:10,251 INFO L242 Difference]: Finished difference. Result has 241 places, 216 transitions, 639 flow [2021-10-21 19:14:10,251 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=639, PETRI_PLACES=241, PETRI_TRANSITIONS=216} [2021-10-21 19:14:10,252 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 33 predicate places. [2021-10-21 19:14:10,252 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 216 transitions, 639 flow [2021-10-21 19:14:10,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 173.3846153846154) internal successors, (2254), 13 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:14:10,254 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:10,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:10,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 19:14:10,481 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:14:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:10,481 INFO L82 PathProgramCache]: Analyzing trace with hash 432875825, now seen corresponding path program 2 times [2021-10-21 19:14:10,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:10,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183981983] [2021-10-21 19:14:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:10,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:17,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:17,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183981983] [2021-10-21 19:14:17,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183981983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:14:17,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915629974] [2021-10-21 19:14:17,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:14:17,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:14:17,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:14:17,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:14:17,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:14:17,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:14:17,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:14:17,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 143 conjunts are in the unsatisfiable core [2021-10-21 19:14:17,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:17,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:14:18,494 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 19:14:18,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 19:14:19,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-21 19:14:21,562 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-10-21 19:14:21,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-10-21 19:14:22,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-21 19:14:22,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-21 19:14:25,925 INFO L354 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2021-10-21 19:14:25,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 33 [2021-10-21 19:14:26,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-21 19:14:28,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-21 19:14:28,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-21 19:14:28,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-21 19:14:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:33,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915629974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:14:33,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:14:33,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 57] total 106 [2021-10-21 19:14:33,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709521371] [2021-10-21 19:14:33,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-10-21 19:14:33,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-10-21 19:14:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=10545, Unknown=0, NotChecked=0, Total=11130 [2021-10-21 19:14:33,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 230 [2021-10-21 19:14:33,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 216 transitions, 639 flow. Second operand has 106 states, 106 states have (on average 72.4622641509434) internal successors, (7681), 106 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:33,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:14:33,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 230 [2021-10-21 19:14:33,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:15:17,401 INFO L129 PetriNetUnfolder]: 1093/3460 cut-off events. [2021-10-21 19:15:17,402 INFO L130 PetriNetUnfolder]: For 3502/3636 co-relation queries the response was YES. [2021-10-21 19:15:17,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8401 conditions, 3460 events. 1093/3460 cut-off events. For 3502/3636 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 25777 event pairs, 50 based on Foata normal form. 59/3298 useless extension candidates. Maximal degree in co-relation 8377. Up to 701 conditions per place. [2021-10-21 19:15:17,448 INFO L132 encePairwiseOnDemand]: 164/230 looper letters, 311 selfloop transitions, 193 changer transitions 27/595 dead transitions. [2021-10-21 19:15:17,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 595 transitions, 3227 flow [2021-10-21 19:15:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-21 19:15:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-10-21 19:15:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 8308 transitions. [2021-10-21 19:15:17,526 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3225155279503106 [2021-10-21 19:15:17,526 INFO L72 ComplementDD]: Start complementDD. Operand 112 states and 8308 transitions. [2021-10-21 19:15:17,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 8308 transitions. [2021-10-21 19:15:17,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:15:17,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 112 states and 8308 transitions. [2021-10-21 19:15:17,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 113 states, 112 states have (on average 74.17857142857143) internal successors, (8308), 112 states have internal predecessors, (8308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:17,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 113 states, 113 states have (on average 230.0) internal successors, (25990), 113 states have internal predecessors, (25990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:17,617 INFO L81 ComplementDD]: Finished complementDD. Result has 113 states, 113 states have (on average 230.0) internal successors, (25990), 113 states have internal predecessors, (25990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:17,617 INFO L186 Difference]: Start difference. First operand has 241 places, 216 transitions, 639 flow. Second operand 112 states and 8308 transitions. [2021-10-21 19:15:17,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 595 transitions, 3227 flow [2021-10-21 19:15:17,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 595 transitions, 3125 flow, removed 40 selfloop flow, removed 9 redundant places. [2021-10-21 19:15:17,651 INFO L242 Difference]: Finished difference. Result has 401 places, 412 transitions, 2453 flow [2021-10-21 19:15:17,652 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=2453, PETRI_PLACES=401, PETRI_TRANSITIONS=412} [2021-10-21 19:15:17,652 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 193 predicate places. [2021-10-21 19:15:17,652 INFO L470 AbstractCegarLoop]: Abstraction has has 401 places, 412 transitions, 2453 flow [2021-10-21 19:15:17,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 72.4622641509434) internal successors, (7681), 106 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:17,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:15:17,658 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:15:17,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-21 19:15:17,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 19:15:17,881 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:15:17,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:17,882 INFO L82 PathProgramCache]: Analyzing trace with hash -222568713, now seen corresponding path program 3 times [2021-10-21 19:15:17,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:17,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106068428] [2021-10-21 19:15:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:17,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:15:18,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:18,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106068428] [2021-10-21 19:15:18,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106068428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:18,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30481655] [2021-10-21 19:15:18,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:15:18,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:18,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:18,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:15:19,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:15:19,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:19,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:15:19,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-21 19:15:19,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30481655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:15:19,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:15:19,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-10-21 19:15:19,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514962236] [2021-10-21 19:15:19,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:15:19,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:19,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:15:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:15:19,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 230 [2021-10-21 19:15:19,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 412 transitions, 2453 flow. Second operand has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:19,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:15:19,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 230 [2021-10-21 19:15:19,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:15:20,464 INFO L129 PetriNetUnfolder]: 238/1610 cut-off events. [2021-10-21 19:15:20,464 INFO L130 PetriNetUnfolder]: For 2526/2563 co-relation queries the response was YES. [2021-10-21 19:15:20,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 1610 events. 238/1610 cut-off events. For 2526/2563 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9343 event pairs, 66 based on Foata normal form. 45/1547 useless extension candidates. Maximal degree in co-relation 3621. Up to 306 conditions per place. [2021-10-21 19:15:20,489 INFO L132 encePairwiseOnDemand]: 227/230 looper letters, 5 selfloop transitions, 14 changer transitions 0/340 dead transitions. [2021-10-21 19:15:20,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 340 transitions, 1817 flow [2021-10-21 19:15:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:15:20,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:15:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 850 transitions. [2021-10-21 19:15:20,492 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9239130434782609 [2021-10-21 19:15:20,492 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 850 transitions. [2021-10-21 19:15:20,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 850 transitions. [2021-10-21 19:15:20,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:15:20,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 850 transitions. [2021-10-21 19:15:20,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:20,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:20,498 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:20,498 INFO L186 Difference]: Start difference. First operand has 401 places, 412 transitions, 2453 flow. Second operand 4 states and 850 transitions. [2021-10-21 19:15:20,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 340 transitions, 1817 flow [2021-10-21 19:15:20,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 340 transitions, 1619 flow, removed 78 selfloop flow, removed 24 redundant places. [2021-10-21 19:15:20,533 INFO L242 Difference]: Finished difference. Result has 373 places, 340 transitions, 1640 flow [2021-10-21 19:15:20,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1640, PETRI_PLACES=373, PETRI_TRANSITIONS=340} [2021-10-21 19:15:20,535 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 165 predicate places. [2021-10-21 19:15:20,535 INFO L470 AbstractCegarLoop]: Abstraction has has 373 places, 340 transitions, 1640 flow [2021-10-21 19:15:20,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:20,535 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:15:20,536 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:15:20,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-21 19:15:20,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:20,749 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:15:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1179219687, now seen corresponding path program 4 times [2021-10-21 19:15:20,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:20,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702258131] [2021-10-21 19:15:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:20,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:28,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:28,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702258131] [2021-10-21 19:15:28,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702258131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:28,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103053589] [2021-10-21 19:15:28,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:15:28,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:28,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:28,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:28,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:15:29,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:15:29,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:29,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-21 19:15:29,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-21 19:15:32,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103053589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:32,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:32,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 17] total 66 [2021-10-21 19:15:32,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061409946] [2021-10-21 19:15:32,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-21 19:15:32,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:32,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-21 19:15:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3906, Unknown=0, NotChecked=0, Total=4290 [2021-10-21 19:15:32,777 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 230 [2021-10-21 19:15:32,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 340 transitions, 1640 flow. Second operand has 66 states, 66 states have (on average 86.66666666666667) internal successors, (5720), 66 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:32,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:15:32,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 230 [2021-10-21 19:15:32,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:15:43,192 INFO L129 PetriNetUnfolder]: 894/3523 cut-off events. [2021-10-21 19:15:43,192 INFO L130 PetriNetUnfolder]: For 6897/6977 co-relation queries the response was YES. [2021-10-21 19:15:43,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10038 conditions, 3523 events. 894/3523 cut-off events. For 6897/6977 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 25516 event pairs, 174 based on Foata normal form. 5/3279 useless extension candidates. Maximal degree in co-relation 9965. Up to 1291 conditions per place. [2021-10-21 19:15:43,263 INFO L132 encePairwiseOnDemand]: 167/230 looper letters, 288 selfloop transitions, 188 changer transitions 17/564 dead transitions. [2021-10-21 19:15:43,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 564 transitions, 3548 flow [2021-10-21 19:15:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-21 19:15:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-10-21 19:15:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 9749 transitions. [2021-10-21 19:15:43,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.37510580992689496 [2021-10-21 19:15:43,300 INFO L72 ComplementDD]: Start complementDD. Operand 113 states and 9749 transitions. [2021-10-21 19:15:43,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 9749 transitions. [2021-10-21 19:15:43,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:15:43,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 113 states and 9749 transitions. [2021-10-21 19:15:43,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 114 states, 113 states have (on average 86.27433628318585) internal successors, (9749), 113 states have internal predecessors, (9749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:43,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 114 states, 114 states have (on average 230.0) internal successors, (26220), 114 states have internal predecessors, (26220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:43,394 INFO L81 ComplementDD]: Finished complementDD. Result has 114 states, 114 states have (on average 230.0) internal successors, (26220), 114 states have internal predecessors, (26220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:43,394 INFO L186 Difference]: Start difference. First operand has 373 places, 340 transitions, 1640 flow. Second operand 113 states and 9749 transitions. [2021-10-21 19:15:43,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 564 transitions, 3548 flow [2021-10-21 19:15:43,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 564 transitions, 3532 flow, removed 8 selfloop flow, removed 0 redundant places. [2021-10-21 19:15:43,450 INFO L242 Difference]: Finished difference. Result has 517 places, 430 transitions, 2796 flow [2021-10-21 19:15:43,450 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=2796, PETRI_PLACES=517, PETRI_TRANSITIONS=430} [2021-10-21 19:15:43,451 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 309 predicate places. [2021-10-21 19:15:43,451 INFO L470 AbstractCegarLoop]: Abstraction has has 517 places, 430 transitions, 2796 flow [2021-10-21 19:15:43,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 86.66666666666667) internal successors, (5720), 66 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:43,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:15:43,453 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:15:43,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:43,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:15:43,681 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:15:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:43,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1436123479, now seen corresponding path program 5 times [2021-10-21 19:15:43,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:43,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200825995] [2021-10-21 19:15:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:43,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-21 19:15:43,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:43,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200825995] [2021-10-21 19:15:43,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200825995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:43,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132918898] [2021-10-21 19:15:43,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:15:43,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:43,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:43,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:43,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:15:45,927 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-21 19:15:45,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:45,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:15:45,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-21 19:15:46,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132918898] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:46,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:46,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:15:46,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655481327] [2021-10-21 19:15:46,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:15:46,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:46,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:15:46,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:15:46,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 230 [2021-10-21 19:15:46,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 430 transitions, 2796 flow. Second operand has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:15:46,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 230 [2021-10-21 19:15:46,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:15:46,888 INFO L129 PetriNetUnfolder]: 16/1041 cut-off events. [2021-10-21 19:15:46,888 INFO L130 PetriNetUnfolder]: For 763/763 co-relation queries the response was YES. [2021-10-21 19:15:46,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 1041 events. 16/1041 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5051 event pairs, 0 based on Foata normal form. 11/1015 useless extension candidates. Maximal degree in co-relation 2054. Up to 47 conditions per place. [2021-10-21 19:15:46,904 INFO L132 encePairwiseOnDemand]: 227/230 looper letters, 3 selfloop transitions, 13 changer transitions 0/388 dead transitions. [2021-10-21 19:15:46,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 388 transitions, 2472 flow [2021-10-21 19:15:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:15:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:15:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 847 transitions. [2021-10-21 19:15:46,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9206521739130434 [2021-10-21 19:15:46,911 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 847 transitions. [2021-10-21 19:15:46,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 847 transitions. [2021-10-21 19:15:46,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:15:46,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 847 transitions. [2021-10-21 19:15:46,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,920 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,920 INFO L186 Difference]: Start difference. First operand has 517 places, 430 transitions, 2796 flow. Second operand 4 states and 847 transitions. [2021-10-21 19:15:46,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 388 transitions, 2472 flow [2021-10-21 19:15:46,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 388 transitions, 2039 flow, removed 103 selfloop flow, removed 43 redundant places. [2021-10-21 19:15:46,963 INFO L242 Difference]: Finished difference. Result has 468 places, 388 transitions, 2033 flow [2021-10-21 19:15:46,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2033, PETRI_PLACES=468, PETRI_TRANSITIONS=388} [2021-10-21 19:15:46,964 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 260 predicate places. [2021-10-21 19:15:46,964 INFO L470 AbstractCegarLoop]: Abstraction has has 468 places, 388 transitions, 2033 flow [2021-10-21 19:15:46,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:15:46,965 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:15:46,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:47,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:15:47,177 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:15:47,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:47,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1449133544, now seen corresponding path program 6 times [2021-10-21 19:15:47,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:47,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536513404] [2021-10-21 19:15:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:47,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:15:47,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:47,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536513404] [2021-10-21 19:15:47,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536513404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:47,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390717518] [2021-10-21 19:15:47,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:15:47,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:47,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:47,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:15:48,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-21 19:15:48,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:48,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:15:48,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-21 19:15:49,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390717518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:49,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:49,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2021-10-21 19:15:49,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529083746] [2021-10-21 19:15:49,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:15:49,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:49,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:15:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:15:49,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2021-10-21 19:15:49,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 388 transitions, 2033 flow. Second operand has 22 states, 22 states have (on average 168.5) internal successors, (3707), 22 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:49,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:15:49,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2021-10-21 19:15:49,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:15:51,274 INFO L129 PetriNetUnfolder]: 15/1320 cut-off events. [2021-10-21 19:15:51,275 INFO L130 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2021-10-21 19:15:51,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 1320 events. 15/1320 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7623 event pairs, 0 based on Foata normal form. 4/1271 useless extension candidates. Maximal degree in co-relation 2504. Up to 51 conditions per place. [2021-10-21 19:15:51,285 INFO L132 encePairwiseOnDemand]: 200/230 looper letters, 65 selfloop transitions, 27 changer transitions 215/453 dead transitions. [2021-10-21 19:15:51,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 453 transitions, 2885 flow [2021-10-21 19:15:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-21 19:15:51,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-10-21 19:15:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 9771 transitions. [2021-10-21 19:15:51,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7200442151805453 [2021-10-21 19:15:51,305 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 9771 transitions. [2021-10-21 19:15:51,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 9771 transitions. [2021-10-21 19:15:51,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:15:51,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 9771 transitions. [2021-10-21 19:15:51,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 165.61016949152543) internal successors, (9771), 59 states have internal predecessors, (9771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 230.0) internal successors, (13800), 60 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,355 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 230.0) internal successors, (13800), 60 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,355 INFO L186 Difference]: Start difference. First operand has 468 places, 388 transitions, 2033 flow. Second operand 59 states and 9771 transitions. [2021-10-21 19:15:51,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 453 transitions, 2885 flow [2021-10-21 19:15:51,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 453 transitions, 2846 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-21 19:15:51,388 INFO L242 Difference]: Finished difference. Result has 539 places, 225 transitions, 908 flow [2021-10-21 19:15:51,389 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=908, PETRI_PLACES=539, PETRI_TRANSITIONS=225} [2021-10-21 19:15:51,389 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 331 predicate places. [2021-10-21 19:15:51,389 INFO L470 AbstractCegarLoop]: Abstraction has has 539 places, 225 transitions, 908 flow [2021-10-21 19:15:51,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 168.5) internal successors, (3707), 22 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,390 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:15:51,391 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:15:51,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:51,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:15:51,612 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:15:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:51,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1527481947, now seen corresponding path program 7 times [2021-10-21 19:15:51,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:51,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725181413] [2021-10-21 19:15:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:51,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-21 19:15:51,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:51,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725181413] [2021-10-21 19:15:51,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725181413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:51,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338580908] [2021-10-21 19:15:51,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:15:51,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:51,962 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:51,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:15:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:53,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:15:53,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-21 19:15:54,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338580908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:54,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:54,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-10-21 19:15:54,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817668124] [2021-10-21 19:15:54,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:15:54,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:15:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:15:54,634 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 230 [2021-10-21 19:15:54,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 225 transitions, 908 flow. Second operand has 19 states, 19 states have (on average 172.68421052631578) internal successors, (3281), 19 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:54,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:15:54,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 230 [2021-10-21 19:15:54,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:15:55,185 INFO L129 PetriNetUnfolder]: 5/482 cut-off events. [2021-10-21 19:15:55,185 INFO L130 PetriNetUnfolder]: For 399/399 co-relation queries the response was YES. [2021-10-21 19:15:55,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 482 events. 5/482 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1025 event pairs, 0 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 992. Up to 33 conditions per place. [2021-10-21 19:15:55,189 INFO L132 encePairwiseOnDemand]: 205/230 looper letters, 45 selfloop transitions, 33 changer transitions 22/257 dead transitions. [2021-10-21 19:15:55,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 257 transitions, 1330 flow [2021-10-21 19:15:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-21 19:15:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-21 19:15:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4644 transitions. [2021-10-21 19:15:55,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7478260869565218 [2021-10-21 19:15:55,196 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4644 transitions. [2021-10-21 19:15:55,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4644 transitions. [2021-10-21 19:15:55,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:15:55,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4644 transitions. [2021-10-21 19:15:55,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 172.0) internal successors, (4644), 27 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:55,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 230.0) internal successors, (6440), 28 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:55,274 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 230.0) internal successors, (6440), 28 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:55,275 INFO L186 Difference]: Start difference. First operand has 539 places, 225 transitions, 908 flow. Second operand 27 states and 4644 transitions. [2021-10-21 19:15:55,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 257 transitions, 1330 flow [2021-10-21 19:15:55,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 257 transitions, 997 flow, removed 131 selfloop flow, removed 78 redundant places. [2021-10-21 19:15:55,291 INFO L242 Difference]: Finished difference. Result has 321 places, 228 transitions, 804 flow [2021-10-21 19:15:55,291 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=804, PETRI_PLACES=321, PETRI_TRANSITIONS=228} [2021-10-21 19:15:55,291 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 113 predicate places. [2021-10-21 19:15:55,291 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 228 transitions, 804 flow [2021-10-21 19:15:55,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 172.68421052631578) internal successors, (3281), 19 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:55,292 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:15:55,293 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:15:55,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:55,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 19:15:55,508 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:15:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:55,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1924775102, now seen corresponding path program 8 times [2021-10-21 19:15:55,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:55,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879031088] [2021-10-21 19:15:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:55,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:02,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:02,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879031088] [2021-10-21 19:16:02,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879031088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:02,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917658829] [2021-10-21 19:16:02,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:02,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:02,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:02,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:16:04,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:04,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:04,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 189 conjunts are in the unsatisfiable core [2021-10-21 19:16:04,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:12,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-21 19:16:14,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-21 19:16:14,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-21 19:16:15,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-21 19:16:28,768 INFO L354 Elim1Store]: treesize reduction 464, result has 31.9 percent of original size [2021-10-21 19:16:28,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 191 treesize of output 287 [2021-10-21 19:16:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:28,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917658829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:28,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:28,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 70] total 134 [2021-10-21 19:16:28,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682654653] [2021-10-21 19:16:28,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2021-10-21 19:16:28,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2021-10-21 19:16:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1064, Invalid=16756, Unknown=2, NotChecked=0, Total=17822 [2021-10-21 19:16:28,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 230 [2021-10-21 19:16:28,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 228 transitions, 804 flow. Second operand has 134 states, 134 states have (on average 73.35820895522389) internal successors, (9830), 134 states have internal predecessors, (9830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:28,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:16:28,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 230 [2021-10-21 19:16:28,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:17:11,165 INFO L129 PetriNetUnfolder]: 67/966 cut-off events. [2021-10-21 19:17:11,165 INFO L130 PetriNetUnfolder]: For 421/421 co-relation queries the response was YES. [2021-10-21 19:17:11,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 966 events. 67/966 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3928 event pairs, 8 based on Foata normal form. 5/919 useless extension candidates. Maximal degree in co-relation 1980. Up to 85 conditions per place. [2021-10-21 19:17:11,171 INFO L132 encePairwiseOnDemand]: 163/230 looper letters, 232 selfloop transitions, 94 changer transitions 69/460 dead transitions. [2021-10-21 19:17:11,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 460 transitions, 2448 flow [2021-10-21 19:17:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-21 19:17:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-10-21 19:17:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 8256 transitions. [2021-10-21 19:17:11,191 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3233842538190364 [2021-10-21 19:17:11,191 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 8256 transitions. [2021-10-21 19:17:11,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 8256 transitions. [2021-10-21 19:17:11,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:17:11,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 8256 transitions. [2021-10-21 19:17:11,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 74.37837837837837) internal successors, (8256), 111 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:11,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 230.0) internal successors, (25760), 112 states have internal predecessors, (25760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:11,237 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 230.0) internal successors, (25760), 112 states have internal predecessors, (25760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:11,238 INFO L186 Difference]: Start difference. First operand has 321 places, 228 transitions, 804 flow. Second operand 111 states and 8256 transitions. [2021-10-21 19:17:11,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 460 transitions, 2448 flow [2021-10-21 19:17:11,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 460 transitions, 2228 flow, removed 58 selfloop flow, removed 24 redundant places. [2021-10-21 19:17:11,257 INFO L242 Difference]: Finished difference. Result has 464 places, 299 transitions, 1421 flow [2021-10-21 19:17:11,258 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=1421, PETRI_PLACES=464, PETRI_TRANSITIONS=299} [2021-10-21 19:17:11,258 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 256 predicate places. [2021-10-21 19:17:11,258 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 299 transitions, 1421 flow [2021-10-21 19:17:11,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 73.35820895522389) internal successors, (9830), 134 states have internal predecessors, (9830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:11,260 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:17:11,260 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:17:11,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:11,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:17:11,478 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:17:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:11,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1717664204, now seen corresponding path program 9 times [2021-10-21 19:17:11,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:11,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118956632] [2021-10-21 19:17:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:11,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:27,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:27,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118956632] [2021-10-21 19:17:27,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118956632] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:27,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504332107] [2021-10-21 19:17:27,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:17:27,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:27,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:27,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:17:29,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:17:29,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:29,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-21 19:17:29,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-10-21 19:17:43,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504332107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:43,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:43,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 24] total 92 [2021-10-21 19:17:43,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530619790] [2021-10-21 19:17:43,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-21 19:17:43,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-21 19:17:43,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=7943, Unknown=2, NotChecked=0, Total=8372 [2021-10-21 19:17:43,118 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 230 [2021-10-21 19:17:43,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 299 transitions, 1421 flow. Second operand has 92 states, 92 states have (on average 86.02173913043478) internal successors, (7914), 92 states have internal predecessors, (7914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:43,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:17:43,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 230 [2021-10-21 19:17:43,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:18:33,939 WARN L207 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 209 DAG size of output: 97 [2021-10-21 19:19:00,943 WARN L207 SmtUtils]: Spent 6.31 s on a formula simplification. DAG size of input: 195 DAG size of output: 104 [2021-10-21 19:19:02,806 INFO L129 PetriNetUnfolder]: 88/1254 cut-off events. [2021-10-21 19:19:02,806 INFO L130 PetriNetUnfolder]: For 992/992 co-relation queries the response was YES. [2021-10-21 19:19:02,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 1254 events. 88/1254 cut-off events. For 992/992 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6003 event pairs, 0 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 2999. Up to 52 conditions per place. [2021-10-21 19:19:02,818 INFO L132 encePairwiseOnDemand]: 162/230 looper letters, 0 selfloop transitions, 0 changer transitions 567/567 dead transitions. [2021-10-21 19:19:02,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 567 transitions, 3612 flow [2021-10-21 19:19:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2021-10-21 19:19:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-10-21 19:19:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 12957 transitions. [2021-10-21 19:19:02,836 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3730780305211633 [2021-10-21 19:19:02,836 INFO L72 ComplementDD]: Start complementDD. Operand 151 states and 12957 transitions. [2021-10-21 19:19:02,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 12957 transitions. [2021-10-21 19:19:02,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:02,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 151 states and 12957 transitions. [2021-10-21 19:19:02,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 152 states, 151 states have (on average 85.80794701986756) internal successors, (12957), 151 states have internal predecessors, (12957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:02,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 152 states, 152 states have (on average 230.0) internal successors, (34960), 152 states have internal predecessors, (34960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:02,902 INFO L81 ComplementDD]: Finished complementDD. Result has 152 states, 152 states have (on average 230.0) internal successors, (34960), 152 states have internal predecessors, (34960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:02,902 INFO L186 Difference]: Start difference. First operand has 464 places, 299 transitions, 1421 flow. Second operand 151 states and 12957 transitions. [2021-10-21 19:19:02,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 567 transitions, 3612 flow [2021-10-21 19:19:02,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 567 transitions, 3377 flow, removed 94 selfloop flow, removed 39 redundant places. [2021-10-21 19:19:02,937 INFO L242 Difference]: Finished difference. Result has 549 places, 0 transitions, 0 flow [2021-10-21 19:19:02,938 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=151, PETRI_FLOW=0, PETRI_PLACES=549, PETRI_TRANSITIONS=0} [2021-10-21 19:19:02,938 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 341 predicate places. [2021-10-21 19:19:02,939 INFO L470 AbstractCegarLoop]: Abstraction has has 549 places, 0 transitions, 0 flow [2021-10-21 19:19:02,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 86.02173913043478) internal successors, (7914), 92 states have internal predecessors, (7914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:02,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:19:02,943 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:19:02,943 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:19:02,943 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 19:19:02,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:19:03,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:03,174 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:19:03,174 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:19:03,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:19:03 BasicIcfg [2021-10-21 19:19:03,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:19:03,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:19:03,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:19:03,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:19:03,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:01" (3/4) ... [2021-10-21 19:19:03,182 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:19:03,189 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-21 19:19:03,189 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-21 19:19:03,189 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-21 19:19:03,200 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2021-10-21 19:19:03,201 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:19:03,201 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:19:03,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:19:03,278 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:19:03,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:19:03,280 INFO L168 Benchmark]: Toolchain (without parser) took 303785.37 ms. Allocated memory was 86.0 MB in the beginning and 973.1 MB in the end (delta: 887.1 MB). Free memory was 52.0 MB in the beginning and 342.9 MB in the end (delta: -290.9 MB). Peak memory consumption was 595.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:03,280 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory was 58.5 MB in the beginning and 58.4 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:03,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.57 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 51.9 MB in the beginning and 83.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:03,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.07 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 80.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:03,282 INFO L168 Benchmark]: Boogie Preprocessor took 41.51 ms. Allocated memory is still 109.1 MB. Free memory was 80.4 MB in the beginning and 78.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:03,282 INFO L168 Benchmark]: RCFGBuilder took 1394.42 ms. Allocated memory is still 109.1 MB. Free memory was 78.3 MB in the beginning and 76.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:03,282 INFO L168 Benchmark]: TraceAbstraction took 301879.52 ms. Allocated memory was 109.1 MB in the beginning and 973.1 MB in the end (delta: 864.0 MB). Free memory was 76.8 MB in the beginning and 347.6 MB in the end (delta: -270.8 MB). Peak memory consumption was 593.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:03,283 INFO L168 Benchmark]: Witness Printer took 101.36 ms. Allocated memory is still 973.1 MB. Free memory was 347.6 MB in the beginning and 342.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:03,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory was 58.5 MB in the beginning and 58.4 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.57 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 51.9 MB in the beginning and 83.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.07 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 80.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.51 ms. Allocated memory is still 109.1 MB. Free memory was 80.4 MB in the beginning and 78.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1394.42 ms. Allocated memory is still 109.1 MB. Free memory was 78.3 MB in the beginning and 76.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 301879.52 ms. Allocated memory was 109.1 MB in the beginning and 973.1 MB in the end (delta: 864.0 MB). Free memory was 76.8 MB in the beginning and 347.6 MB in the end (delta: -270.8 MB). Peak memory consumption was 593.5 MB. Max. memory is 16.1 GB. * Witness Printer took 101.36 ms. Allocated memory is still 973.1 MB. Free memory was 347.6 MB in the beginning and 342.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 148]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 241 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 89.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 301688.7ms, OverallIterations: 19, TraceHistogramMax: 5, EmptinessCheckTime: 0.0ms, AutomataDifference: 182989.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 189.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 591 SDtfs, 7899 SDslu, 12590 SDs, 0 SdLazy, 24898 SolverSat, 1154 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 66218.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3349 GetRequests, 2312 SyntacticMatches, 4 SemanticMatches, 1033 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61337 ImplicationChecksByTransitivity, 148660.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2796occurred in iteration=14, InterpolantAutomatonStates: 655, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 502.0ms SsaConstructionTime, 3980.8ms SatisfiabilityAnalysisTime, 100017.4ms InterpolantComputationTime, 6287 NumberOfCodeBlocks, 6233 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 6257 ConstructedInterpolants, 91 QuantifiedInterpolants, 89882 SizeOfPredicates, 262 NumberOfNonLiveVariables, 5903 ConjunctsInSsa, 588 ConjunctsInUnsatCore, 30 InterpolantComputations, 10 PerfectInterpolantSequences, 563/1064 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:19:03,513 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-21 19:19:03,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd8c102-7aa8-4910-ad0f-f69863f6993d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...