./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f04994a7f7b8271614d7fad10c4ab264713e8e55 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:51:24,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:51:24,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:51:24,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:51:24,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:51:24,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:51:24,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:51:24,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:51:24,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:51:24,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:51:24,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:51:24,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:51:24,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:51:24,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:51:24,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:51:24,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:51:24,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:51:24,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:51:24,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:51:24,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:51:24,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:51:24,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:51:24,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:51:24,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:51:24,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:51:24,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:51:24,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:51:24,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:51:24,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:51:24,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:51:24,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:51:24,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:51:24,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:51:24,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:51:24,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:51:24,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:51:24,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:51:24,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:51:24,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:51:24,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:51:24,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:51:24,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:51:24,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:51:24,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:51:24,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:51:24,466 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:51:24,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:51:24,467 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:51:24,467 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:51:24,467 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:51:24,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:51:24,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:51:24,475 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:51:24,476 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:51:24,476 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:51:24,476 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:51:24,476 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:51:24,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:51:24,477 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:51:24,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:51:24,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:51:24,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:51:24,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:51:24,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:51:24,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:51:24,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:51:24,479 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:51:24,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:51:24,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:51:24,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:51:24,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:51:24,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:51:24,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:51:24,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:51:24,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:51:24,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:51:24,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:51:24,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:51:24,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:51:24,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:51:24,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:51:24,484 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04994a7f7b8271614d7fad10c4ab264713e8e55 [2021-10-13 07:51:24,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:51:24,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:51:24,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:51:24,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:51:24,844 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:51:24,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/safe029_tso.opt.i [2021-10-13 07:51:24,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/data/e0a47e00d/d8748af16b8940b69ff87f0b2f36a45d/FLAGc724e20d4 [2021-10-13 07:51:25,504 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:51:25,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/sv-benchmarks/c/pthread-wmm/safe029_tso.opt.i [2021-10-13 07:51:25,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/data/e0a47e00d/d8748af16b8940b69ff87f0b2f36a45d/FLAGc724e20d4 [2021-10-13 07:51:25,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/data/e0a47e00d/d8748af16b8940b69ff87f0b2f36a45d [2021-10-13 07:51:25,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:51:25,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:51:25,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:51:25,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:51:25,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:51:25,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:25" (1/1) ... [2021-10-13 07:51:25,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e32cf31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:25, skipping insertion in model container [2021-10-13 07:51:25,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:25" (1/1) ... [2021-10-13 07:51:25,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:51:25,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:51:26,147 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_92521229-a822-4c2f-8e47-6f5fa652b84f/sv-benchmarks/c/pthread-wmm/safe029_tso.opt.i[949,962] [2021-10-13 07:51:26,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:51:26,339 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:51:26,350 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_92521229-a822-4c2f-8e47-6f5fa652b84f/sv-benchmarks/c/pthread-wmm/safe029_tso.opt.i[949,962] [2021-10-13 07:51:26,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:51:26,414 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:51:26,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26 WrapperNode [2021-10-13 07:51:26,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:51:26,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:51:26,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:51:26,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:51:26,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:51:26,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:51:26,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:51:26,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:51:26,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:51:26,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:51:26,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:51:26,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:51:26,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (1/1) ... [2021-10-13 07:51:26,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:51:26,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:26,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:51:26,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:51:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:51:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 07:51:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:51:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:51:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 07:51:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 07:51:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 07:51:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 07:51:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:51:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 07:51:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:51:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:51:26,584 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 07:51:26,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:51:26,941 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 07:51:26,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:26 BoogieIcfgContainer [2021-10-13 07:51:26,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:51:26,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:51:26,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:51:26,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:51:26,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:51:25" (1/3) ... [2021-10-13 07:51:26,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2455157e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:26, skipping insertion in model container [2021-10-13 07:51:26,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:26" (2/3) ... [2021-10-13 07:51:26,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2455157e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:26, skipping insertion in model container [2021-10-13 07:51:26,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:26" (3/3) ... [2021-10-13 07:51:26,953 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2021-10-13 07:51:26,959 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 07:51:26,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:51:26,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:51:26,963 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 07:51:26,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:26,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:26,998 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:26,998 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:26,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:26,999 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:26,999 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,000 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,003 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,004 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,004 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,005 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,005 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,006 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,007 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,007 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,012 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,012 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,018 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:51:27,027 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 07:51:27,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:51:27,079 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:51:27,080 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:51:27,093 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 07:51:27,105 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 65 transitions, 140 flow [2021-10-13 07:51:27,108 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 65 transitions, 140 flow [2021-10-13 07:51:27,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 65 transitions, 140 flow [2021-10-13 07:51:27,146 INFO L129 PetriNetUnfolder]: 2/63 cut-off events. [2021-10-13 07:51:27,146 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 07:51:27,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 2/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-10-13 07:51:27,152 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-10-13 07:51:29,837 INFO L131 LiptonReduction]: Checked pairs total: 1595 [2021-10-13 07:51:29,837 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-10-13 07:51:29,845 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-10-13 07:51:29,859 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:51:29,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:29,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:51:29,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:51:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1456954353, now seen corresponding path program 1 times [2021-10-13 07:51:29,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:29,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855033787] [2021-10-13 07:51:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:29,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:30,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:30,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855033787] [2021-10-13 07:51:30,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855033787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:30,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:30,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:51:30,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848743963] [2021-10-13 07:51:30,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:51:30,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:51:30,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:51:30,169 INFO L87 Difference]: Start difference. First operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:30,208 INFO L93 Difference]: Finished difference Result 69 states and 131 transitions. [2021-10-13 07:51:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:30,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-10-13 07:51:30,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:30,222 INFO L225 Difference]: With dead ends: 69 [2021-10-13 07:51:30,222 INFO L226 Difference]: Without dead ends: 53 [2021-10-13 07:51:30,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:51:30,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-13 07:51:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2021-10-13 07:51:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 85 transitions. [2021-10-13 07:51:30,282 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 85 transitions. Word has length 6 [2021-10-13 07:51:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:30,283 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 85 transitions. [2021-10-13 07:51:30,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 85 transitions. [2021-10-13 07:51:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:51:30,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:30,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:30,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:51:30,293 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:51:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2057458070, now seen corresponding path program 1 times [2021-10-13 07:51:30,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:30,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621827030] [2021-10-13 07:51:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:30,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:30,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:30,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621827030] [2021-10-13 07:51:30,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621827030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:30,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:30,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:51:30,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3164055] [2021-10-13 07:51:30,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:51:30,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:51:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:30,439 INFO L87 Difference]: Start difference. First operand 49 states and 85 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:30,475 INFO L93 Difference]: Finished difference Result 50 states and 85 transitions. [2021-10-13 07:51:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:51:30,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2021-10-13 07:51:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:30,477 INFO L225 Difference]: With dead ends: 50 [2021-10-13 07:51:30,477 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 07:51:30,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 07:51:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2021-10-13 07:51:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 79 transitions. [2021-10-13 07:51:30,494 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 79 transitions. Word has length 7 [2021-10-13 07:51:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:30,494 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 79 transitions. [2021-10-13 07:51:30,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 79 transitions. [2021-10-13 07:51:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:51:30,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:30,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:30,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:51:30,496 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:51:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:30,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2079054437, now seen corresponding path program 1 times [2021-10-13 07:51:30,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:30,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808683013] [2021-10-13 07:51:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:30,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:30,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:30,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808683013] [2021-10-13 07:51:30,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808683013] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:30,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:30,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:51:30,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408191195] [2021-10-13 07:51:30,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:51:30,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:51:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:30,625 INFO L87 Difference]: Start difference. First operand 46 states and 79 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:30,646 INFO L93 Difference]: Finished difference Result 47 states and 79 transitions. [2021-10-13 07:51:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:51:30,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2021-10-13 07:51:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:30,647 INFO L225 Difference]: With dead ends: 47 [2021-10-13 07:51:30,647 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 07:51:30,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 07:51:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2021-10-13 07:51:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 73 transitions. [2021-10-13 07:51:30,653 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 73 transitions. Word has length 7 [2021-10-13 07:51:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:30,654 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 73 transitions. [2021-10-13 07:51:30,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,654 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 73 transitions. [2021-10-13 07:51:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:51:30,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:30,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:30,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:51:30,656 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:51:30,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:30,656 INFO L82 PathProgramCache]: Analyzing trace with hash -643310146, now seen corresponding path program 1 times [2021-10-13 07:51:30,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:30,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622862135] [2021-10-13 07:51:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:30,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:30,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:30,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622862135] [2021-10-13 07:51:30,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622862135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:30,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:30,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:51:30,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98032233] [2021-10-13 07:51:30,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:51:30,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:51:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:30,752 INFO L87 Difference]: Start difference. First operand 43 states and 73 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:30,777 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2021-10-13 07:51:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:51:30,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2021-10-13 07:51:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:30,779 INFO L225 Difference]: With dead ends: 43 [2021-10-13 07:51:30,779 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 07:51:30,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:51:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 07:51:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 07:51:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-10-13 07:51:30,784 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 8 [2021-10-13 07:51:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:30,784 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-10-13 07:51:30,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-10-13 07:51:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:51:30,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:30,786 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:30,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:51:30,786 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:51:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash 217575122, now seen corresponding path program 1 times [2021-10-13 07:51:30,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:30,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981082550] [2021-10-13 07:51:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:30,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:30,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:30,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981082550] [2021-10-13 07:51:30,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981082550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:30,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:30,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:51:30,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628434916] [2021-10-13 07:51:30,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:51:30,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:30,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:51:30,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:51:30,892 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:30,922 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2021-10-13 07:51:30,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:51:30,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2021-10-13 07:51:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:30,923 INFO L225 Difference]: With dead ends: 25 [2021-10-13 07:51:30,923 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:51:30,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:51:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:51:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:51:30,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-13 07:51:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:30,925 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:51:30,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:51:30,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:51:30,927 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:51:30,928 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 07:51:30,928 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 07:51:30,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:51:30,933 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 07:51:30,933 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:51:30,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:51:30 BasicIcfg [2021-10-13 07:51:30,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:51:30,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:51:30,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:51:30,938 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:51:30,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:26" (3/4) ... [2021-10-13 07:51:30,942 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:51:30,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 07:51:30,952 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 07:51:30,959 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-13 07:51:30,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:51:30,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:51:30,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:51:31,029 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:51:31,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:51:31,031 INFO L168 Benchmark]: Toolchain (without parser) took 5129.58 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 97.6 MB in the beginning and 118.6 MB in the end (delta: -21.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:31,032 INFO L168 Benchmark]: CDTParser took 7.37 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 60.7 MB in the beginning and 115.7 MB in the end (delta: -55.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:31,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.32 ms. Allocated memory is still 134.2 MB. Free memory was 97.4 MB in the beginning and 101.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:31,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.96 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 99.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:31,036 INFO L168 Benchmark]: Boogie Preprocessor took 23.96 ms. Allocated memory is still 134.2 MB. Free memory was 99.0 MB in the beginning and 97.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:31,037 INFO L168 Benchmark]: RCFGBuilder took 461.10 ms. Allocated memory is still 134.2 MB. Free memory was 97.9 MB in the beginning and 86.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:31,039 INFO L168 Benchmark]: TraceAbstraction took 3990.68 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 85.9 MB in the beginning and 120.7 MB in the end (delta: -34.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:31,040 INFO L168 Benchmark]: Witness Printer took 91.83 ms. Allocated memory is still 161.5 MB. Free memory was 120.7 MB in the beginning and 118.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:31,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 7.37 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 60.7 MB in the beginning and 115.7 MB in the end (delta: -55.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 510.32 ms. Allocated memory is still 134.2 MB. Free memory was 97.4 MB in the beginning and 101.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.96 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 99.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.96 ms. Allocated memory is still 134.2 MB. Free memory was 99.0 MB in the beginning and 97.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 461.10 ms. Allocated memory is still 134.2 MB. Free memory was 97.9 MB in the beginning and 86.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3990.68 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 85.9 MB in the beginning and 120.7 MB in the end (delta: -34.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 91.83 ms. Allocated memory is still 161.5 MB. Free memory was 120.7 MB in the beginning and 118.6 MB in the end (delta: 2.1 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: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2729.8ms, 70 PlacesBefore, 22 PlacesAfterwards, 65 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1595 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1012, positive: 930, positive conditional: 0, positive unconditional: 930, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 593, positive: 562, positive conditional: 0, positive unconditional: 562, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 593, positive: 557, positive conditional: 0, positive unconditional: 557, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 108, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1012, positive: 368, positive conditional: 0, positive unconditional: 368, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 593, unknown conditional: 0, unknown unconditional: 593] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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 5 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3860.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 10.6ms, AutomataDifference: 203.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2779.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 42 SDslu, 62 SDs, 0 SdLazy, 44 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 55.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.6ms SsaConstructionTime, 177.6ms SatisfiabilityAnalysisTime, 367.2ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 185 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2021-10-13 07:51:31,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92521229-a822-4c2f-8e47-6f5fa652b84f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...