./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI --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 8629328e258ffe2856bf08bdfdc740db811f6a10 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:22,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:22,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:22,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:22,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:22,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:22,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:22,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:22,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:22,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:22,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:22,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:22,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:22,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:22,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:22,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:22,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:22,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:22,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:22,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:22,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:22,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:22,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:22,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:22,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:22,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:22,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:22,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:22,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:22,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:22,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:22,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:22,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:22,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:22,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:22,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:22,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:22,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:22,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:22,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:22,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:22,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:22,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:22,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:22,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:22,457 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:22,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:22,458 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:22,458 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:22,458 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:22,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:22,465 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:22,466 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:22,466 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:22,466 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:22,466 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:22,467 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:22,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:22,467 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:22,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:22,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:22,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:22,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:22,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:22,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:22,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:22,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:22,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:22,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:22,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:22,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:22,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:22,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:22,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:22,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:22,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:22,473 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:22,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:22,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:22,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:22,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:22,474 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_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8629328e258ffe2856bf08bdfdc740db811f6a10 [2021-10-11 02:27:22,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:22,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:22,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:22,805 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:22,806 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:22,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i [2021-10-11 02:27:22,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/data/61affbf89/15e11ddaea7a4d579f8b7f4e6f074780/FLAG32c80b23f [2021-10-11 02:27:23,398 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:23,399 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i [2021-10-11 02:27:23,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/data/61affbf89/15e11ddaea7a4d579f8b7f4e6f074780/FLAG32c80b23f [2021-10-11 02:27:23,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/data/61affbf89/15e11ddaea7a4d579f8b7f4e6f074780 [2021-10-11 02:27:23,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:23,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:23,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:23,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:23,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:23,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:23" (1/1) ... [2021-10-11 02:27:23,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748d0b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:23, skipping insertion in model container [2021-10-11 02:27:23,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:23" (1/1) ... [2021-10-11 02:27:23,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:23,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:23,977 WARN L226 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_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i[949,962] [2021-10-11 02:27:24,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:24,224 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:24,235 WARN L226 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_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i[949,962] [2021-10-11 02:27:24,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:24,353 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:24,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24 WrapperNode [2021-10-11 02:27:24,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:24,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:24,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:24,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:24,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:24,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:24,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:24,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:24,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... [2021-10-11 02:27:24,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:24,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:24,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:24,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:24,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:27:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:27:24,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:27:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:27:24,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:27:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:27:24,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:27:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:27:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:24,546 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:27:25,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:25,008 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:27:25,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:25 BoogieIcfgContainer [2021-10-11 02:27:25,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:25,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:25,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:25,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:25,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:23" (1/3) ... [2021-10-11 02:27:25,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64af7625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:25, skipping insertion in model container [2021-10-11 02:27:25,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:24" (2/3) ... [2021-10-11 02:27:25,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64af7625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:25, skipping insertion in model container [2021-10-11 02:27:25,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:25" (3/3) ... [2021-10-11 02:27:25,017 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2021-10-11 02:27:25,031 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:27:25,031 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:25,034 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:25,035 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:27:25,065 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,065 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,065 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,066 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,066 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,066 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,068 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,068 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,071 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,071 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,072 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,072 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,072 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,072 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,075 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,075 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,075 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,076 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,081 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,081 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,081 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,081 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,084 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,084 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,084 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,084 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:25,087 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:27:25,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:27:25,119 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:25,120 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:25,120 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:25,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:25,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:25,120 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:25,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:25,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:25,132 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:27:25,134 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-10-11 02:27:25,137 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-10-11 02:27:25,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-10-11 02:27:25,180 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-10-11 02:27:25,180 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:27:25,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-10-11 02:27:25,187 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-10-11 02:27:27,701 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:27:27,886 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:27:28,797 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-10-11 02:27:29,044 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-10-11 02:27:29,174 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2021-10-11 02:27:29,174 INFO L133 LiptonReduction]: Total number of compositions: 63 [2021-10-11 02:27:29,182 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-10-11 02:27:29,222 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2021-10-11 02:27:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2021-10-11 02:27:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:29,231 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:29,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:29,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:29,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:29,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2021-10-11 02:27:29,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:29,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759025141] [2021-10-11 02:27:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:29,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759025141] [2021-10-11 02:27:29,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:29,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:29,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377352054] [2021-10-11 02:27:29,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:29,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:29,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:29,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:29,577 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2021-10-11 02:27:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:29,671 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2021-10-11 02:27:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:29,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:27:29,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:29,697 INFO L225 Difference]: With dead ends: 282 [2021-10-11 02:27:29,698 INFO L226 Difference]: Without dead ends: 218 [2021-10-11 02:27:29,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-11 02:27:29,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-10-11 02:27:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2021-10-11 02:27:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2021-10-11 02:27:29,808 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2021-10-11 02:27:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:29,809 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2021-10-11 02:27:29,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2021-10-11 02:27:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:29,812 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:29,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:29,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:29,813 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 695075092, now seen corresponding path program 1 times [2021-10-11 02:27:29,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:29,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743284945] [2021-10-11 02:27:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:29,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743284945] [2021-10-11 02:27:29,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:29,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:29,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045749349] [2021-10-11 02:27:29,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:29,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:29,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:29,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:29,933 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2021-10-11 02:27:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:29,963 INFO L93 Difference]: Finished difference Result 312 states and 816 transitions. [2021-10-11 02:27:29,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:29,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:27:29,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:29,967 INFO L225 Difference]: With dead ends: 312 [2021-10-11 02:27:29,968 INFO L226 Difference]: Without dead ends: 296 [2021-10-11 02:27:29,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-11 02:27:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 262. [2021-10-11 02:27:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-10-11 02:27:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 703 transitions. [2021-10-11 02:27:29,994 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 703 transitions. Word has length 9 [2021-10-11 02:27:29,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:29,995 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 703 transitions. [2021-10-11 02:27:29,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:29,995 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 703 transitions. [2021-10-11 02:27:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:29,997 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:29,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:29,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:29,997 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:29,998 INFO L82 PathProgramCache]: Analyzing trace with hash 72489286, now seen corresponding path program 1 times [2021-10-11 02:27:29,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:29,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107002868] [2021-10-11 02:27:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:30,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107002868] [2021-10-11 02:27:30,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:30,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:30,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316524729] [2021-10-11 02:27:30,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:30,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:30,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:30,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:30,095 INFO L87 Difference]: Start difference. First operand 262 states and 703 transitions. Second operand 3 states. [2021-10-11 02:27:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:30,108 INFO L93 Difference]: Finished difference Result 254 states and 677 transitions. [2021-10-11 02:27:30,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:30,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 02:27:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:30,112 INFO L225 Difference]: With dead ends: 254 [2021-10-11 02:27:30,113 INFO L226 Difference]: Without dead ends: 254 [2021-10-11 02:27:30,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-11 02:27:30,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2021-10-11 02:27:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2021-10-11 02:27:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 641 transitions. [2021-10-11 02:27:30,162 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 641 transitions. Word has length 10 [2021-10-11 02:27:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:30,164 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 641 transitions. [2021-10-11 02:27:30,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 641 transitions. [2021-10-11 02:27:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:30,168 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:30,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:30,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:30,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:30,170 INFO L82 PathProgramCache]: Analyzing trace with hash 72490526, now seen corresponding path program 1 times [2021-10-11 02:27:30,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:30,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133048243] [2021-10-11 02:27:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:30,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133048243] [2021-10-11 02:27:30,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:30,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:30,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850350083] [2021-10-11 02:27:30,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:30,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:30,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:30,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:30,224 INFO L87 Difference]: Start difference. First operand 238 states and 641 transitions. Second operand 3 states. [2021-10-11 02:27:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:30,241 INFO L93 Difference]: Finished difference Result 226 states and 600 transitions. [2021-10-11 02:27:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:30,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 02:27:30,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:30,246 INFO L225 Difference]: With dead ends: 226 [2021-10-11 02:27:30,246 INFO L226 Difference]: Without dead ends: 226 [2021-10-11 02:27:30,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-11 02:27:30,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 202. [2021-10-11 02:27:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-10-11 02:27:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 530 transitions. [2021-10-11 02:27:30,267 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 530 transitions. Word has length 10 [2021-10-11 02:27:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:30,267 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 530 transitions. [2021-10-11 02:27:30,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 530 transitions. [2021-10-11 02:27:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:30,268 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:30,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:30,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:30,269 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:30,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2036231076, now seen corresponding path program 1 times [2021-10-11 02:27:30,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:30,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321698129] [2021-10-11 02:27:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:30,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321698129] [2021-10-11 02:27:30,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:30,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:30,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24940884] [2021-10-11 02:27:30,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:30,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:30,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:30,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:30,347 INFO L87 Difference]: Start difference. First operand 202 states and 530 transitions. Second operand 4 states. [2021-10-11 02:27:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:30,374 INFO L93 Difference]: Finished difference Result 282 states and 728 transitions. [2021-10-11 02:27:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:30,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:27:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:30,376 INFO L225 Difference]: With dead ends: 282 [2021-10-11 02:27:30,377 INFO L226 Difference]: Without dead ends: 178 [2021-10-11 02:27:30,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-11 02:27:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-10-11 02:27:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2021-10-11 02:27:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2021-10-11 02:27:30,385 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2021-10-11 02:27:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:30,385 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2021-10-11 02:27:30,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2021-10-11 02:27:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:30,386 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:30,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:30,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:30,386 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:30,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2047800276, now seen corresponding path program 2 times [2021-10-11 02:27:30,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:30,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35659077] [2021-10-11 02:27:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:30,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35659077] [2021-10-11 02:27:30,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:30,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:30,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462398486] [2021-10-11 02:27:30,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:30,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:30,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:30,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:30,442 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 4 states. [2021-10-11 02:27:30,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:30,472 INFO L93 Difference]: Finished difference Result 206 states and 481 transitions. [2021-10-11 02:27:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:30,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:27:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:30,478 INFO L225 Difference]: With dead ends: 206 [2021-10-11 02:27:30,478 INFO L226 Difference]: Without dead ends: 150 [2021-10-11 02:27:30,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-11 02:27:30,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-11 02:27:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-10-11 02:27:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 344 transitions. [2021-10-11 02:27:30,485 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 344 transitions. Word has length 11 [2021-10-11 02:27:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:30,485 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 344 transitions. [2021-10-11 02:27:30,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 344 transitions. [2021-10-11 02:27:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:30,486 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:30,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:30,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:27:30,486 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:30,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1362454825, now seen corresponding path program 1 times [2021-10-11 02:27:30,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:30,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179169328] [2021-10-11 02:27:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:30,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179169328] [2021-10-11 02:27:30,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:30,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:30,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519907374] [2021-10-11 02:27:30,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:30,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:30,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:30,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:30,588 INFO L87 Difference]: Start difference. First operand 150 states and 344 transitions. Second operand 5 states. [2021-10-11 02:27:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:30,641 INFO L93 Difference]: Finished difference Result 149 states and 319 transitions. [2021-10-11 02:27:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:30,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:27:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:30,643 INFO L225 Difference]: With dead ends: 149 [2021-10-11 02:27:30,643 INFO L226 Difference]: Without dead ends: 115 [2021-10-11 02:27:30,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-11 02:27:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-11 02:27:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-10-11 02:27:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 242 transitions. [2021-10-11 02:27:30,649 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 242 transitions. Word has length 12 [2021-10-11 02:27:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:30,654 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 242 transitions. [2021-10-11 02:27:30,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:30,654 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 242 transitions. [2021-10-11 02:27:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:27:30,655 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:30,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:30,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:27:30,655 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:30,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:30,656 INFO L82 PathProgramCache]: Analyzing trace with hash -646579048, now seen corresponding path program 1 times [2021-10-11 02:27:30,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:30,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505452657] [2021-10-11 02:27:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:30,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505452657] [2021-10-11 02:27:30,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:30,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:30,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036054230] [2021-10-11 02:27:30,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:30,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:30,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:30,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:30,776 INFO L87 Difference]: Start difference. First operand 115 states and 242 transitions. Second operand 6 states. [2021-10-11 02:27:30,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:30,839 INFO L93 Difference]: Finished difference Result 110 states and 230 transitions. [2021-10-11 02:27:30,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:30,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 02:27:30,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:30,841 INFO L225 Difference]: With dead ends: 110 [2021-10-11 02:27:30,841 INFO L226 Difference]: Without dead ends: 92 [2021-10-11 02:27:30,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:27:30,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-11 02:27:30,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-10-11 02:27:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-10-11 02:27:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 185 transitions. [2021-10-11 02:27:30,847 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 185 transitions. Word has length 14 [2021-10-11 02:27:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:30,848 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 185 transitions. [2021-10-11 02:27:30,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 185 transitions. [2021-10-11 02:27:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:27:30,849 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:30,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:30,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:27:30,850 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:30,850 INFO L82 PathProgramCache]: Analyzing trace with hash 390859497, now seen corresponding path program 1 times [2021-10-11 02:27:30,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:30,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596192353] [2021-10-11 02:27:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:30,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596192353] [2021-10-11 02:27:30,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:30,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:30,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583095944] [2021-10-11 02:27:30,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:30,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:30,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:30,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:30,928 INFO L87 Difference]: Start difference. First operand 88 states and 185 transitions. Second operand 4 states. [2021-10-11 02:27:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:30,945 INFO L93 Difference]: Finished difference Result 103 states and 209 transitions. [2021-10-11 02:27:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:30,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 02:27:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:30,946 INFO L225 Difference]: With dead ends: 103 [2021-10-11 02:27:30,946 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:27:30,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:27:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:27:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:27:30,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2021-10-11 02:27:30,949 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 17 [2021-10-11 02:27:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:30,949 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2021-10-11 02:27:30,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2021-10-11 02:27:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:27:30,950 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:30,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:30,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:27:30,950 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:30,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:30,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1988858199, now seen corresponding path program 2 times [2021-10-11 02:27:30,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:30,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285643076] [2021-10-11 02:27:30,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:31,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285643076] [2021-10-11 02:27:31,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:31,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:31,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279575585] [2021-10-11 02:27:31,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:31,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:31,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:31,007 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand 4 states. [2021-10-11 02:27:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:31,023 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2021-10-11 02:27:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:31,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 02:27:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:31,024 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:27:31,025 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:31,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:31,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:31,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:31,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-11 02:27:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:31,026 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:31,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:31,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:31,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:27:31,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:31 BasicIcfg [2021-10-11 02:27:31,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:31,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:31,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:31,035 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:31,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:25" (3/4) ... [2021-10-11 02:27:31,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:31,046 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:27:31,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:27:31,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:27:31,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:27:31,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:27:31,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:31,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:31,119 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baef7cfd-30d5-4ed2-a53c-8ccacc7eeb5a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:31,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:31,120 INFO L168 Benchmark]: Toolchain (without parser) took 7426.83 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 59.1 MB in the beginning and 110.6 MB in the end (delta: -51.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:31,121 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:31,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.54 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 53.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:31,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.66 ms. Allocated memory is still 98.6 MB. Free memory was 53.0 MB in the beginning and 51.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:31,122 INFO L168 Benchmark]: Boogie Preprocessor took 59.72 ms. Allocated memory is still 98.6 MB. Free memory was 50.9 MB in the beginning and 49.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:31,123 INFO L168 Benchmark]: RCFGBuilder took 544.35 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 49.7 MB in the beginning and 87.0 MB in the end (delta: -37.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:31,123 INFO L168 Benchmark]: TraceAbstraction took 6022.85 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 86.3 MB in the beginning and 113.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:31,123 INFO L168 Benchmark]: Witness Printer took 84.43 ms. Allocated memory is still 174.1 MB. Free memory was 113.8 MB in the beginning and 110.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:31,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 658.54 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 53.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.66 ms. Allocated memory is still 98.6 MB. Free memory was 53.0 MB in the beginning and 51.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.72 ms. Allocated memory is still 98.6 MB. Free memory was 50.9 MB in the beginning and 49.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 544.35 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 49.7 MB in the beginning and 87.0 MB in the end (delta: -37.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6022.85 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 86.3 MB in the beginning and 113.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * Witness Printer took 84.43 ms. Allocated memory is still 174.1 MB. Free memory was 113.8 MB in the beginning and 110.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 831 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 174 SDtfs, 203 SDslu, 167 SDs, 0 SdLazy, 87 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 78 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...