./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU --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 e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:35:39,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:35:39,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:35:39,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:35:39,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:35:39,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:35:39,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:35:39,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:35:39,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:35:39,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:35:39,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:35:39,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:35:39,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:35:39,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:35:39,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:35:39,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:35:39,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:35:39,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:35:39,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:35:39,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:35:39,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:35:39,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:35:39,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:35:39,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:35:39,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:35:39,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:35:39,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:35:39,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:35:39,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:35:39,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:35:39,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:35:39,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:35:39,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:35:39,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:35:39,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:35:39,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:35:39,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:35:39,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:35:39,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:35:39,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:35:39,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:35:39,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:35:39,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:35:39,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:35:39,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:35:39,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:35:39,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:35:39,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:35:39,429 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:35:39,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:35:39,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:35:39,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:35:39,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:35:39,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:35:39,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:35:39,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:35:39,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:35:39,434 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:35:39,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:35:39,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:35:39,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:35:39,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:35:39,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:35:39,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:35:39,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:35:39,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:35:39,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:35:39,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:35:39,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:35:39,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:35:39,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:35:39,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:35:39,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:35:39,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:35:39,440 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_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce [2021-11-02 22:35:39,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:35:39,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:35:39,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:35:39,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:35:39,914 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:35:39,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-02 22:35:40,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/data/f8151b4d0/2321f968f9064493866c9f533e4458d1/FLAG7698810ac [2021-11-02 22:35:40,806 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:35:40,812 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-02 22:35:40,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/data/f8151b4d0/2321f968f9064493866c9f533e4458d1/FLAG7698810ac [2021-11-02 22:35:41,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/data/f8151b4d0/2321f968f9064493866c9f533e4458d1 [2021-11-02 22:35:41,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:35:41,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:35:41,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:35:41,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:35:41,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:35:41,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:41,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2201b4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41, skipping insertion in model container [2021-11-02 22:35:41,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:41,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:35:41,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:35:41,358 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_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-11-02 22:35:41,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:35:41,728 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:35:41,750 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_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-11-02 22:35:41,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:35:41,891 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:35:41,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41 WrapperNode [2021-11-02 22:35:41,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:35:41,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:35:41,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:35:41,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:35:41,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:41,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:41,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:35:41,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:35:41,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:35:41,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:35:42,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:42,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:42,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:42,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:42,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:42,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:42,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:42,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:35:42,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:35:42,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:35:42,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:35:42,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (1/1) ... [2021-11-02 22:35:42,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:35:42,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:35:42,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:35:42,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:35:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:35:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-02 22:35:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:35:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:35:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-02 22:35:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-02 22:35:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-02 22:35:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-02 22:35:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-02 22:35:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-02 22:35:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:35:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-02 22:35:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:35:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:35:42,192 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-02 22:35:42,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:35:42,657 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-02 22:35:42,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:35:42 BoogieIcfgContainer [2021-11-02 22:35:42,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:35:42,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:35:42,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:35:42,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:35:42,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:35:41" (1/3) ... [2021-11-02 22:35:42,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340e07ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:35:42, skipping insertion in model container [2021-11-02 22:35:42,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:41" (2/3) ... [2021-11-02 22:35:42,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340e07ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:35:42, skipping insertion in model container [2021-11-02 22:35:42,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:35:42" (3/3) ... [2021-11-02 22:35:42,673 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-02 22:35:42,681 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-02 22:35:42,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:35:42,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:35:42,682 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-02 22:35:42,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,723 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,723 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,724 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,724 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,724 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,725 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,727 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,728 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,728 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,728 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,728 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,729 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,730 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,730 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,730 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,732 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,733 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,733 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,739 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,740 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,748 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,751 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:35:42,755 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-02 22:35:42,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:35:42,827 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:35:42,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 22:35:42,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-11-02 22:35:42,915 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-11-02 22:35:42,915 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 22:35:42,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-11-02 22:35:42,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-11-02 22:35:42,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-11-02 22:35:42,958 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-11-02 22:35:42,958 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 22:35:42,958 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:35:42,959 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] [2021-11-02 22:35:42,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:35:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2137267374, now seen corresponding path program 1 times [2021-11-02 22:35:43,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:43,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732245561] [2021-11-02 22:35:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:43,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:43,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:43,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732245561] [2021-11-02 22:35:43,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732245561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:43,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:43,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:35:43,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429282869] [2021-11-02 22:35:43,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:35:43,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:35:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:35:43,742 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 82 [2021-11-02 22:35:43,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:43,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:35:43,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 82 [2021-11-02 22:35:43,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:35:43,987 INFO L129 PetriNetUnfolder]: 3/81 cut-off events. [2021-11-02 22:35:43,987 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 22:35:43,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 81 events. 3/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 81. Up to 7 conditions per place. [2021-11-02 22:35:43,991 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 6 selfloop transitions, 2 changer transitions 11/76 dead transitions. [2021-11-02 22:35:43,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 76 transitions, 197 flow [2021-11-02 22:35:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:35:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-02 22:35:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 652 transitions. [2021-11-02 22:35:44,030 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8834688346883469 [2021-11-02 22:35:44,032 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 652 transitions. [2021-11-02 22:35:44,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 652 transitions. [2021-11-02 22:35:44,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:35:44,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 652 transitions. [2021-11-02 22:35:44,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,090 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,092 INFO L186 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 9 states and 652 transitions. [2021-11-02 22:35:44,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 76 transitions, 197 flow [2021-11-02 22:35:44,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 194 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-02 22:35:44,112 INFO L242 Difference]: Finished difference. Result has 88 places, 65 transitions, 156 flow [2021-11-02 22:35:44,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2021-11-02 22:35:44,116 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2021-11-02 22:35:44,116 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 156 flow [2021-11-02 22:35:44,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,125 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:35:44,125 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] [2021-11-02 22:35:44,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:35:44,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:35:44,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1568652371, now seen corresponding path program 1 times [2021-11-02 22:35:44,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:44,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623010486] [2021-11-02 22:35:44,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:44,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:44,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:44,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623010486] [2021-11-02 22:35:44,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623010486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:44,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:44,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:35:44,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008705405] [2021-11-02 22:35:44,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:35:44,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:35:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:35:44,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-11-02 22:35:44,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:35:44,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-11-02 22:35:44,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:35:44,763 INFO L129 PetriNetUnfolder]: 4/86 cut-off events. [2021-11-02 22:35:44,764 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2021-11-02 22:35:44,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 86 events. 4/86 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 0 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 133. Up to 7 conditions per place. [2021-11-02 22:35:44,768 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 6 selfloop transitions, 4 changer transitions 12/77 dead transitions. [2021-11-02 22:35:44,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 247 flow [2021-11-02 22:35:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:35:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 22:35:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 704 transitions. [2021-11-02 22:35:44,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8585365853658536 [2021-11-02 22:35:44,773 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 704 transitions. [2021-11-02 22:35:44,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 704 transitions. [2021-11-02 22:35:44,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:35:44,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 704 transitions. [2021-11-02 22:35:44,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.4) internal successors, (704), 10 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,786 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,786 INFO L186 Difference]: Start difference. First operand has 88 places, 65 transitions, 156 flow. Second operand 10 states and 704 transitions. [2021-11-02 22:35:44,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 247 flow [2021-11-02 22:35:44,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 213 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-11-02 22:35:44,796 INFO L242 Difference]: Finished difference. Result has 90 places, 65 transitions, 170 flow [2021-11-02 22:35:44,797 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=170, PETRI_PLACES=90, PETRI_TRANSITIONS=65} [2021-11-02 22:35:44,798 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2021-11-02 22:35:44,798 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 65 transitions, 170 flow [2021-11-02 22:35:44,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:44,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:35:44,800 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] [2021-11-02 22:35:44,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:35:44,800 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:35:44,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:44,807 INFO L85 PathProgramCache]: Analyzing trace with hash 630364992, now seen corresponding path program 1 times [2021-11-02 22:35:44,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:44,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948443251] [2021-11-02 22:35:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:44,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:45,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:45,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948443251] [2021-11-02 22:35:45,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948443251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:45,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:45,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:35:45,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740922939] [2021-11-02 22:35:45,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:35:45,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:35:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:35:45,100 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-11-02 22:35:45,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 65 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:35:45,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-11-02 22:35:45,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:35:45,357 INFO L129 PetriNetUnfolder]: 22/130 cut-off events. [2021-11-02 22:35:45,357 INFO L130 PetriNetUnfolder]: For 70/97 co-relation queries the response was YES. [2021-11-02 22:35:45,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 130 events. 22/130 cut-off events. For 70/97 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 306 event pairs, 5 based on Foata normal form. 4/132 useless extension candidates. Maximal degree in co-relation 241. Up to 18 conditions per place. [2021-11-02 22:35:45,360 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 7 selfloop transitions, 4 changer transitions 24/89 dead transitions. [2021-11-02 22:35:45,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 316 flow [2021-11-02 22:35:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:35:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 22:35:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 707 transitions. [2021-11-02 22:35:45,377 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8621951219512195 [2021-11-02 22:35:45,378 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 707 transitions. [2021-11-02 22:35:45,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 707 transitions. [2021-11-02 22:35:45,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:35:45,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 707 transitions. [2021-11-02 22:35:45,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.7) internal successors, (707), 10 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,402 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,402 INFO L186 Difference]: Start difference. First operand has 90 places, 65 transitions, 170 flow. Second operand 10 states and 707 transitions. [2021-11-02 22:35:45,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 316 flow [2021-11-02 22:35:45,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 266 flow, removed 20 selfloop flow, removed 10 redundant places. [2021-11-02 22:35:45,410 INFO L242 Difference]: Finished difference. Result has 91 places, 65 transitions, 182 flow [2021-11-02 22:35:45,411 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=91, PETRI_TRANSITIONS=65} [2021-11-02 22:35:45,411 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2021-11-02 22:35:45,412 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 65 transitions, 182 flow [2021-11-02 22:35:45,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,413 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:35:45,413 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:35:45,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:35:45,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:35:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 540038307, now seen corresponding path program 1 times [2021-11-02 22:35:45,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:45,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692393711] [2021-11-02 22:35:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:45,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:45,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:45,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692393711] [2021-11-02 22:35:45,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692393711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:45,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:45,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:35:45,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362495491] [2021-11-02 22:35:45,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:35:45,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:35:45,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:35:45,638 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-11-02 22:35:45,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 65 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:35:45,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-11-02 22:35:45,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:35:45,964 INFO L129 PetriNetUnfolder]: 106/332 cut-off events. [2021-11-02 22:35:45,965 INFO L130 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2021-11-02 22:35:45,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 332 events. 106/332 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1606 event pairs, 24 based on Foata normal form. 8/330 useless extension candidates. Maximal degree in co-relation 625. Up to 84 conditions per place. [2021-11-02 22:35:45,972 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 10 selfloop transitions, 6 changer transitions 19/90 dead transitions. [2021-11-02 22:35:45,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 302 flow [2021-11-02 22:35:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:35:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-02 22:35:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2021-11-02 22:35:45,977 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8794037940379403 [2021-11-02 22:35:45,977 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2021-11-02 22:35:45,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2021-11-02 22:35:45,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:35:45,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2021-11-02 22:35:45,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,986 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,986 INFO L186 Difference]: Start difference. First operand has 91 places, 65 transitions, 182 flow. Second operand 9 states and 649 transitions. [2021-11-02 22:35:45,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 302 flow [2021-11-02 22:35:45,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 292 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-11-02 22:35:45,993 INFO L242 Difference]: Finished difference. Result has 94 places, 68 transitions, 228 flow [2021-11-02 22:35:45,994 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=228, PETRI_PLACES=94, PETRI_TRANSITIONS=68} [2021-11-02 22:35:45,994 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2021-11-02 22:35:45,994 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 68 transitions, 228 flow [2021-11-02 22:35:45,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:45,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:35:45,995 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] [2021-11-02 22:35:45,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:35:45,996 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:35:45,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:45,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1745043195, now seen corresponding path program 1 times [2021-11-02 22:35:45,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:45,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345360904] [2021-11-02 22:35:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:45,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:46,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:46,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345360904] [2021-11-02 22:35:46,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345360904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:46,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:46,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:35:46,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264549040] [2021-11-02 22:35:46,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:35:46,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:46,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:35:46,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:35:46,198 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-11-02 22:35:46,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 68 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:46,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:35:46,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-11-02 22:35:46,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:35:46,458 INFO L129 PetriNetUnfolder]: 57/217 cut-off events. [2021-11-02 22:35:46,458 INFO L130 PetriNetUnfolder]: For 320/358 co-relation queries the response was YES. [2021-11-02 22:35:46,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 217 events. 57/217 cut-off events. For 320/358 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 799 event pairs, 4 based on Foata normal form. 13/227 useless extension candidates. Maximal degree in co-relation 618. Up to 76 conditions per place. [2021-11-02 22:35:46,464 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 10 selfloop transitions, 9 changer transitions 19/93 dead transitions. [2021-11-02 22:35:46,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 481 flow [2021-11-02 22:35:46,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:35:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 22:35:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 720 transitions. [2021-11-02 22:35:46,469 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2021-11-02 22:35:46,469 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 720 transitions. [2021-11-02 22:35:46,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 720 transitions. [2021-11-02 22:35:46,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:35:46,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 720 transitions. [2021-11-02 22:35:46,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.0) internal successors, (720), 10 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:46,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:46,478 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:46,478 INFO L186 Difference]: Start difference. First operand has 94 places, 68 transitions, 228 flow. Second operand 10 states and 720 transitions. [2021-11-02 22:35:46,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 481 flow [2021-11-02 22:35:46,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 93 transitions, 451 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-11-02 22:35:46,488 INFO L242 Difference]: Finished difference. Result has 99 places, 71 transitions, 290 flow [2021-11-02 22:35:46,489 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-11-02 22:35:46,489 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2021-11-02 22:35:46,490 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 290 flow [2021-11-02 22:35:46,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:46,492 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:35:46,492 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:35:46,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:35:46,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:35:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:46,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1757713904, now seen corresponding path program 1 times [2021-11-02 22:35:46,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:46,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951292983] [2021-11-02 22:35:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:46,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:46,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:46,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951292983] [2021-11-02 22:35:46,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951292983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:46,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:46,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:35:46,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467742102] [2021-11-02 22:35:46,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:35:46,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:35:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:35:46,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-11-02 22:35:46,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 290 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:46,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:35:46,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-11-02 22:35:46,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:35:47,044 INFO L129 PetriNetUnfolder]: 16/111 cut-off events. [2021-11-02 22:35:47,044 INFO L130 PetriNetUnfolder]: For 357/395 co-relation queries the response was YES. [2021-11-02 22:35:47,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 111 events. 16/111 cut-off events. For 357/395 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 211 event pairs, 0 based on Foata normal form. 14/124 useless extension candidates. Maximal degree in co-relation 335. Up to 30 conditions per place. [2021-11-02 22:35:47,046 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 4 selfloop transitions, 12 changer transitions 13/84 dead transitions. [2021-11-02 22:35:47,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 84 transitions, 474 flow [2021-11-02 22:35:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:35:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-02 22:35:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 779 transitions. [2021-11-02 22:35:47,052 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2021-11-02 22:35:47,052 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 779 transitions. [2021-11-02 22:35:47,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 779 transitions. [2021-11-02 22:35:47,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:35:47,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 779 transitions. [2021-11-02 22:35:47,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.81818181818181) internal successors, (779), 11 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,062 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,062 INFO L186 Difference]: Start difference. First operand has 99 places, 71 transitions, 290 flow. Second operand 11 states and 779 transitions. [2021-11-02 22:35:47,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 84 transitions, 474 flow [2021-11-02 22:35:47,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 84 transitions, 357 flow, removed 47 selfloop flow, removed 14 redundant places. [2021-11-02 22:35:47,069 INFO L242 Difference]: Finished difference. Result has 97 places, 71 transitions, 258 flow [2021-11-02 22:35:47,070 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=258, PETRI_PLACES=97, PETRI_TRANSITIONS=71} [2021-11-02 22:35:47,070 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2021-11-02 22:35:47,070 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 71 transitions, 258 flow [2021-11-02 22:35:47,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:35:47,072 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:35:47,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:35:47,072 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:35:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash 207582189, now seen corresponding path program 1 times [2021-11-02 22:35:47,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:47,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933659020] [2021-11-02 22:35:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:47,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:47,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:47,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933659020] [2021-11-02 22:35:47,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933659020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:47,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:47,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:35:47,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559529181] [2021-11-02 22:35:47,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:35:47,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:47,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:35:47,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:35:47,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-11-02 22:35:47,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 71 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:35:47,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-11-02 22:35:47,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:35:47,379 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-11-02 22:35:47,379 INFO L130 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2021-11-02 22:35:47,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 80 events. 5/80 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 150. Up to 11 conditions per place. [2021-11-02 22:35:47,381 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-11-02 22:35:47,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 69 transitions, 278 flow [2021-11-02 22:35:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:35:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-02 22:35:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2021-11-02 22:35:47,384 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8191056910569106 [2021-11-02 22:35:47,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2021-11-02 22:35:47,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2021-11-02 22:35:47,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:35:47,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2021-11-02 22:35:47,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,398 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,398 INFO L186 Difference]: Start difference. First operand has 97 places, 71 transitions, 258 flow. Second operand 6 states and 403 transitions. [2021-11-02 22:35:47,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 69 transitions, 278 flow [2021-11-02 22:35:47,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 69 transitions, 196 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-11-02 22:35:47,403 INFO L242 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2021-11-02 22:35:47,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2021-11-02 22:35:47,404 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2021-11-02 22:35:47,404 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2021-11-02 22:35:47,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:47,408 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:35:47,409 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-02 22:35:47,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-02 22:35:47,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-02 22:35:47,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:35:47,419 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:35:47,428 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-02 22:35:47,428 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:35:47,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:35:47 BasicIcfg [2021-11-02 22:35:47,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:35:47,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:35:47,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:35:47,435 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:35:47,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:35:42" (3/4) ... [2021-11-02 22:35:47,440 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:35:47,449 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-02 22:35:47,449 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-02 22:35:47,449 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-02 22:35:47,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-02 22:35:47,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 22:35:47,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:35:47,460 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:35:47,535 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:35:47,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:35:47,540 INFO L168 Benchmark]: Toolchain (without parser) took 6468.46 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 55.4 MB in the beginning and 56.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:35:47,541 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:35:47,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.38 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.2 MB in the beginning and 78.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:35:47,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.36 ms. Allocated memory is still 111.1 MB. Free memory was 78.3 MB in the beginning and 76.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:35:47,544 INFO L168 Benchmark]: Boogie Preprocessor took 74.57 ms. Allocated memory is still 111.1 MB. Free memory was 76.2 MB in the beginning and 75.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:35:47,545 INFO L168 Benchmark]: RCFGBuilder took 589.86 ms. Allocated memory is still 111.1 MB. Free memory was 74.9 MB in the beginning and 62.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:35:47,546 INFO L168 Benchmark]: TraceAbstraction took 4770.16 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 62.3 MB in the beginning and 59.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-11-02 22:35:47,547 INFO L168 Benchmark]: Witness Printer took 101.49 ms. Allocated memory is still 134.2 MB. Free memory was 59.8 MB in the beginning and 56.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:35:47,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 820.38 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.2 MB in the beginning and 78.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.36 ms. Allocated memory is still 111.1 MB. Free memory was 78.3 MB in the beginning and 76.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.57 ms. Allocated memory is still 111.1 MB. Free memory was 76.2 MB in the beginning and 75.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 589.86 ms. Allocated memory is still 111.1 MB. Free memory was 74.9 MB in the beginning and 62.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4770.16 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 62.3 MB in the beginning and 59.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Witness Printer took 101.49 ms. Allocated memory is still 134.2 MB. Free memory was 59.8 MB in the beginning and 56.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 140 SDslu, 167 SDs, 0 SdLazy, 256 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=5, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 378 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 1107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-02 22:35:47,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9d83d0-7653-4cf8-b49c-f1bc87dea703/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE