./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G --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 e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:44:37,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:44:37,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:44:37,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:44:37,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:44:37,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:44:37,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:44:37,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:44:37,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:44:37,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:44:37,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:44:37,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:44:37,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:44:37,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:44:37,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:44:37,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:44:37,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:44:37,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:44:37,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:44:37,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:44:37,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:44:37,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:44:37,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:44:37,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:44:37,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:44:37,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:44:37,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:44:37,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:44:37,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:44:37,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:44:37,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:44:37,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:44:37,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:44:37,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:44:37,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:44:37,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:44:37,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:44:37,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:44:37,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:44:37,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:44:37,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:44:37,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:44:37,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:44:37,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:44:37,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:44:37,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:44:37,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:44:37,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:44:37,296 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:44:37,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:44:37,296 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:44:37,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:44:37,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:44:37,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:44:37,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:44:37,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:44:37,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:44:37,298 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:44:37,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:44:37,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:44:37,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:44:37,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:44:37,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:44:37,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:44:37,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:44:37,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:44:37,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:44:37,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:44:37,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:44:37,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:44:37,300 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:44:37,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:44:37,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:44:37,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:44:37,301 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_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2021-11-23 13:44:37,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:44:37,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:44:37,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:44:37,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:44:37,665 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:44:37,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/pthread/stateful01-2.i [2021-11-23 13:44:37,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/data/7f2dc90a6/113d756226cc444c8ef4906019685262/FLAG1ffc59890 [2021-11-23 13:44:38,306 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:44:38,306 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/sv-benchmarks/c/pthread/stateful01-2.i [2021-11-23 13:44:38,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/data/7f2dc90a6/113d756226cc444c8ef4906019685262/FLAG1ffc59890 [2021-11-23 13:44:38,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/data/7f2dc90a6/113d756226cc444c8ef4906019685262 [2021-11-23 13:44:38,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:44:38,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:44:38,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:44:38,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:44:38,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:44:38,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:44:38" (1/1) ... [2021-11-23 13:44:38,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eaeb7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:38, skipping insertion in model container [2021-11-23 13:44:38,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:44:38" (1/1) ... [2021-11-23 13:44:38,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:44:38,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:44:39,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2021-11-23 13:44:39,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:44:39,235 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:44:39,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2021-11-23 13:44:39,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:44:39,357 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:44:39,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39 WrapperNode [2021-11-23 13:44:39,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:44:39,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:44:39,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:44:39,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:44:39,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,411 INFO L137 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2021-11-23 13:44:39,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:44:39,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:44:39,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:44:39,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:44:39,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:44:39,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:44:39,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:44:39,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:44:39,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (1/1) ... [2021-11-23 13:44:39,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:44:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:44:39,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:44:39,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:44:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:44:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 13:44:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 13:44:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 13:44:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 13:44:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:44:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-23 13:44:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:44:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:44:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:44:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:44:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:44:39,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:44:39,524 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 13:44:39,638 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:44:39,640 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:44:39,844 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:44:39,852 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:44:39,852 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:44:39,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:44:39 BoogieIcfgContainer [2021-11-23 13:44:39,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:44:39,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:44:39,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:44:39,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:44:39,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:44:38" (1/3) ... [2021-11-23 13:44:39,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2550f2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:44:39, skipping insertion in model container [2021-11-23 13:44:39,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:39" (2/3) ... [2021-11-23 13:44:39,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2550f2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:44:39, skipping insertion in model container [2021-11-23 13:44:39,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:44:39" (3/3) ... [2021-11-23 13:44:39,864 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2021-11-23 13:44:39,870 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 13:44:39,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:44:39,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:44:39,870 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 13:44:39,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,910 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,910 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,910 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,911 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,911 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,913 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,913 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,913 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,915 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,915 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,918 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,918 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,918 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,919 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,919 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,919 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,920 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,921 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,921 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,922 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,922 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,924 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,932 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,932 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,937 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,939 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:44:39,944 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-23 13:44:40,014 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:44:40,021 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 [2021-11-23 13:44:40,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 13:44:40,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 93 transitions, 202 flow [2021-11-23 13:44:40,135 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2021-11-23 13:44:40,135 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-23 13:44:40,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 1/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2021-11-23 13:44:40,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 93 transitions, 202 flow [2021-11-23 13:44:40,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 80 transitions, 172 flow [2021-11-23 13:44:40,176 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2021-11-23 13:44:40,176 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-23 13:44:40,176 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:44:40,177 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:40,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 13:44:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1215155975, now seen corresponding path program 1 times [2021-11-23 13:44:40,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:40,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204784421] [2021-11-23 13:44:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:40,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:40,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:40,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204784421] [2021-11-23 13:44:40,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204784421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:40,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:40,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:44:40,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791947572] [2021-11-23 13:44:40,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:40,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:44:40,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:44:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:44:40,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 93 [2021-11-23 13:44:40,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 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) [2021-11-23 13:44:40,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:44:40,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 93 [2021-11-23 13:44:40,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:44:41,022 INFO L129 PetriNetUnfolder]: 6/144 cut-off events. [2021-11-23 13:44:41,022 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-11-23 13:44:41,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 144 events. 6/144 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 3 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 117. Up to 17 conditions per place. [2021-11-23 13:44:41,025 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 10 selfloop transitions, 4 changer transitions 5/88 dead transitions. [2021-11-23 13:44:41,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 235 flow [2021-11-23 13:44:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:44:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-23 13:44:41,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2021-11-23 13:44:41,043 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.880184331797235 [2021-11-23 13:44:41,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2021-11-23 13:44:41,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2021-11-23 13:44:41,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:44:41,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2021-11-23 13:44:41,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,083 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,085 INFO L186 Difference]: Start difference. First operand has 87 places, 80 transitions, 172 flow. Second operand 7 states and 573 transitions. [2021-11-23 13:44:41,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 235 flow [2021-11-23 13:44:41,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-23 13:44:41,102 INFO L242 Difference]: Finished difference. Result has 93 places, 82 transitions, 189 flow [2021-11-23 13:44:41,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2021-11-23 13:44:41,112 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2021-11-23 13:44:41,112 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 189 flow [2021-11-23 13:44:41,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 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) [2021-11-23 13:44:41,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:44:41,114 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:41,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:44:41,115 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 13:44:41,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:41,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1428365275, now seen corresponding path program 2 times [2021-11-23 13:44:41,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:41,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534369993] [2021-11-23 13:44:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:41,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:41,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:41,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534369993] [2021-11-23 13:44:41,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534369993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:41,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:41,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:41,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839574814] [2021-11-23 13:44:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:41,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:41,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:41,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:41,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:41,292 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 93 [2021-11-23 13:44:41,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:44:41,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 93 [2021-11-23 13:44:41,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:44:41,417 INFO L129 PetriNetUnfolder]: 10/152 cut-off events. [2021-11-23 13:44:41,425 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-11-23 13:44:41,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 152 events. 10/152 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 6 based on Foata normal form. 8/160 useless extension candidates. Maximal degree in co-relation 220. Up to 31 conditions per place. [2021-11-23 13:44:41,429 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 14 selfloop transitions, 8 changer transitions 1/83 dead transitions. [2021-11-23 13:44:41,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 234 flow [2021-11-23 13:44:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:44:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2021-11-23 13:44:41,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8566308243727598 [2021-11-23 13:44:41,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2021-11-23 13:44:41,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2021-11-23 13:44:41,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:44:41,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2021-11-23 13:44:41,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,438 INFO L186 Difference]: Start difference. First operand has 93 places, 82 transitions, 189 flow. Second operand 3 states and 239 transitions. [2021-11-23 13:44:41,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 234 flow [2021-11-23 13:44:41,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 228 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-23 13:44:41,445 INFO L242 Difference]: Finished difference. Result has 89 places, 80 transitions, 188 flow [2021-11-23 13:44:41,445 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2021-11-23 13:44:41,446 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2021-11-23 13:44:41,447 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 188 flow [2021-11-23 13:44:41,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,447 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:44:41,448 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:41,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:44:41,448 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 13:44:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -142562999, now seen corresponding path program 3 times [2021-11-23 13:44:41,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:41,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505237485] [2021-11-23 13:44:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:41,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:41,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:41,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505237485] [2021-11-23 13:44:41,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505237485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:41,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:41,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:44:41,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704879502] [2021-11-23 13:44:41,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:41,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:44:41,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:44:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:44:41,683 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 93 [2021-11-23 13:44:41,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 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) [2021-11-23 13:44:41,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:44:41,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 93 [2021-11-23 13:44:41,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:44:41,780 INFO L129 PetriNetUnfolder]: 7/129 cut-off events. [2021-11-23 13:44:41,781 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-11-23 13:44:41,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 129 events. 7/129 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 218 event pairs, 2 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 95. Up to 13 conditions per place. [2021-11-23 13:44:41,785 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-11-23 13:44:41,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 224 flow [2021-11-23 13:44:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:44:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-23 13:44:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 568 transitions. [2021-11-23 13:44:41,790 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725038402457758 [2021-11-23 13:44:41,790 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 568 transitions. [2021-11-23 13:44:41,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 568 transitions. [2021-11-23 13:44:41,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:44:41,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 568 transitions. [2021-11-23 13:44:41,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,800 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:41,800 INFO L186 Difference]: Start difference. First operand has 89 places, 80 transitions, 188 flow. Second operand 7 states and 568 transitions. [2021-11-23 13:44:41,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 224 flow [2021-11-23 13:44:41,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 212 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-11-23 13:44:41,806 INFO L242 Difference]: Finished difference. Result has 89 places, 0 transitions, 0 flow [2021-11-23 13:44:41,807 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=89, PETRI_TRANSITIONS=0} [2021-11-23 13:44:41,809 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2021-11-23 13:44:41,810 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 0 transitions, 0 flow [2021-11-23 13:44:41,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 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) [2021-11-23 13:44:41,813 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-23 13:44:41,814 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-23 13:44:41,814 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-23 13:44:41,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:44:41,819 INFO L732 BasicCegarLoop]: Path program histogram: [3] [2021-11-23 13:44:41,821 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-23 13:44:41,822 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:44:41,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:44:41 BasicIcfg [2021-11-23 13:44:41,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:44:41,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:44:41,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:44:41,835 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:44:41,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:44:39" (3/4) ... [2021-11-23 13:44:41,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:44:41,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-23 13:44:41,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-23 13:44:41,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-23 13:44:41,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 13:44:41,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:44:41,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 13:44:41,888 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:44:41,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:44:41,889 INFO L158 Benchmark]: Toolchain (without parser) took 3286.39ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 62.3MB in the beginning and 78.3MB in the end (delta: -16.0MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-23 13:44:41,889 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory was 79.9MB in the beginning and 79.8MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:44:41,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 744.43ms. Allocated memory is still 102.8MB. Free memory was 62.1MB in the beginning and 66.4MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:44:41,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.41ms. Allocated memory is still 102.8MB. Free memory was 66.4MB in the beginning and 64.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:44:41,891 INFO L158 Benchmark]: Boogie Preprocessor took 28.84ms. Allocated memory is still 102.8MB. Free memory was 64.7MB in the beginning and 63.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:44:41,894 INFO L158 Benchmark]: RCFGBuilder took 413.02ms. Allocated memory is still 102.8MB. Free memory was 63.1MB in the beginning and 50.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 13:44:41,895 INFO L158 Benchmark]: TraceAbstraction took 1975.39ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 50.1MB in the beginning and 81.5MB in the end (delta: -31.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:44:41,896 INFO L158 Benchmark]: Witness Printer took 54.06ms. Allocated memory is still 134.2MB. Free memory was 81.5MB in the beginning and 78.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:44:41,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory was 79.9MB in the beginning and 79.8MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 744.43ms. Allocated memory is still 102.8MB. Free memory was 62.1MB in the beginning and 66.4MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.41ms. Allocated memory is still 102.8MB. Free memory was 66.4MB in the beginning and 64.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.84ms. Allocated memory is still 102.8MB. Free memory was 64.7MB in the beginning and 63.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.02ms. Allocated memory is still 102.8MB. Free memory was 63.1MB in the beginning and 50.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1975.39ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 50.1MB in the beginning and 81.5MB in the end (delta: -31.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 54.06ms. Allocated memory is still 134.2MB. Free memory was 81.5MB in the beginning and 78.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 727]: 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 5 procedures, 123 locations, 3 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: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 129 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 22 mSDtfsCounter, 129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=1, InterpolantAutomatonStates: 17, 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, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 807 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-11-23 13:44:41,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdec636-5688-47f2-b27a-460c56d7fd0d/bin/uautomizer-wIGwrQj20G/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