./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.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_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/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_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/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_0c63ee35-7aa0-419b-82b2-c338cccd9efd/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 ffd27eb51bbbfe3eeef30785e40b2473c24c7f3d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:23:13,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:13,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:13,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:13,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:13,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:13,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:13,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:13,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:13,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:13,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:13,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:13,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:13,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:13,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:13,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:13,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:13,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:13,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:13,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:13,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:13,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:13,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:13,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:13,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:13,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:13,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:13,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:13,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:13,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:13,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:13,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:13,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:13,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:13,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:13,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:13,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:13,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:13,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:13,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:13,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:13,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:13,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:13,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:13,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:13,475 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:13,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:13,475 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:13,475 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:13,476 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:13,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:13,476 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:13,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:13,477 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:13,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:13,477 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:13,478 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:13,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:13,479 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:13,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:13,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:13,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:13,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:13,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:13,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:13,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:13,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:13,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:13,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:13,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:13,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:13,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:13,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:13,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:13,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:13,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:13,484 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:13,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:13,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:13,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:13,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:13,485 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_0c63ee35-7aa0-419b-82b2-c338cccd9efd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffd27eb51bbbfe3eeef30785e40b2473c24c7f3d [2021-10-11 02:23:13,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:13,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:13,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:13,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:13,773 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:13,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i [2021-10-11 02:23:13,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/data/58a3b4c79/f968b7f3bb424b808d73b0b281d18724/FLAG6aae90e1f [2021-10-11 02:23:14,466 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:14,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i [2021-10-11 02:23:14,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/data/58a3b4c79/f968b7f3bb424b808d73b0b281d18724/FLAG6aae90e1f [2021-10-11 02:23:14,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/data/58a3b4c79/f968b7f3bb424b808d73b0b281d18724 [2021-10-11 02:23:14,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:14,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:14,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:14,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:14,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:14,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:14" (1/1) ... [2021-10-11 02:23:14,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de38398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:14, skipping insertion in model container [2021-10-11 02:23:14,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:14" (1/1) ... [2021-10-11 02:23:14,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:14,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:15,018 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_0c63ee35-7aa0-419b-82b2-c338cccd9efd/sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i[949,962] [2021-10-11 02:23:15,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:15,196 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:15,208 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_0c63ee35-7aa0-419b-82b2-c338cccd9efd/sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i[949,962] [2021-10-11 02:23:15,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:15,313 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:15,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15 WrapperNode [2021-10-11 02:23:15,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:15,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:15,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:15,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:15,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:15,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:15,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:15,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:15,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:15,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:15,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:15,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:15,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/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 02:23:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:23:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:23:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:23:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:23:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:23:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:23:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:23:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:23:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:15,508 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 02:23:15,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:15,884 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:23:15,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:15 BoogieIcfgContainer [2021-10-11 02:23:15,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:15,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:15,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:15,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:15,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:14" (1/3) ... [2021-10-11 02:23:15,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ceed72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:15, skipping insertion in model container [2021-10-11 02:23:15,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15" (2/3) ... [2021-10-11 02:23:15,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ceed72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:15, skipping insertion in model container [2021-10-11 02:23:15,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:15" (3/3) ... [2021-10-11 02:23:15,895 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2021-10-11 02:23:15,951 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:23:15,962 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:15,966 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:15,973 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:23:16,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,031 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,031 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,033 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,034 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,034 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,038 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,038 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,039 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,039 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,041 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,041 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,041 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,042 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,042 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,049 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,049 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,059 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,059 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,059 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,060 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:16,062 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:23:16,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:23:16,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:16,108 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:16,108 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:16,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:16,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:16,109 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:16,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:16,109 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:16,119 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:23:16,120 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-10-11 02:23:16,122 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-10-11 02:23:16,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-10-11 02:23:16,175 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-10-11 02:23:16,175 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:23:16,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-10-11 02:23:16,185 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-10-11 02:23:18,352 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:23:18,532 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:23:18,995 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-10-11 02:23:19,263 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-10-11 02:23:19,373 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-10-11 02:23:19,394 INFO L131 LiptonReduction]: Checked pairs total: 2703 [2021-10-11 02:23:19,394 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-10-11 02:23:19,402 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-11 02:23:19,434 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-10-11 02:23:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-10-11 02:23:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:23:19,443 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:19,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:19,444 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:19,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:19,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1511125318, now seen corresponding path program 1 times [2021-10-11 02:23:19,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:19,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10198829] [2021-10-11 02:23:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:19,670 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 02:23:19,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10198829] [2021-10-11 02:23:19,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:19,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:19,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691656351] [2021-10-11 02:23:19,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:23:19,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:19,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:23:19,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:19,705 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-10-11 02:23:19,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:19,754 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-10-11 02:23:19,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:23:19,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:23:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:19,770 INFO L225 Difference]: With dead ends: 362 [2021-10-11 02:23:19,770 INFO L226 Difference]: Without dead ends: 298 [2021-10-11 02:23:19,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-11 02:23:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-11 02:23:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-10-11 02:23:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-11 02:23:19,842 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-11 02:23:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:19,843 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-11 02:23:19,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:23:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-11 02:23:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:23:19,845 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:19,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:19,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:19,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:19,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:19,846 INFO L82 PathProgramCache]: Analyzing trace with hash -399770224, now seen corresponding path program 1 times [2021-10-11 02:23:19,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:19,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791036416] [2021-10-11 02:23:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,048 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 02:23:20,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791036416] [2021-10-11 02:23:20,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:20,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046102306] [2021-10-11 02:23:20,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:20,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:20,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:20,052 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-10-11 02:23:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,106 INFO L93 Difference]: Finished difference Result 518 states and 1456 transitions. [2021-10-11 02:23:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:20,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:23:20,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,115 INFO L225 Difference]: With dead ends: 518 [2021-10-11 02:23:20,115 INFO L226 Difference]: Without dead ends: 372 [2021-10-11 02:23:20,116 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 02:23:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-11 02:23:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 312. [2021-10-11 02:23:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2021-10-11 02:23:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 836 transitions. [2021-10-11 02:23:20,157 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 836 transitions. Word has length 9 [2021-10-11 02:23:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:20,158 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 836 transitions. [2021-10-11 02:23:20,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 836 transitions. [2021-10-11 02:23:20,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:23:20,159 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:20,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:20,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:20,160 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:20,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1147875187, now seen corresponding path program 1 times [2021-10-11 02:23:20,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:20,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432236857] [2021-10-11 02:23:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,284 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 02:23:20,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432236857] [2021-10-11 02:23:20,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:20,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592071471] [2021-10-11 02:23:20,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:20,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:20,290 INFO L87 Difference]: Start difference. First operand 312 states and 836 transitions. Second operand 5 states. [2021-10-11 02:23:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,350 INFO L93 Difference]: Finished difference Result 430 states and 1110 transitions. [2021-10-11 02:23:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:20,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:23:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,354 INFO L225 Difference]: With dead ends: 430 [2021-10-11 02:23:20,354 INFO L226 Difference]: Without dead ends: 346 [2021-10-11 02:23:20,355 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 02:23:20,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-10-11 02:23:20,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 290. [2021-10-11 02:23:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2021-10-11 02:23:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 762 transitions. [2021-10-11 02:23:20,372 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 762 transitions. Word has length 10 [2021-10-11 02:23:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:20,373 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 762 transitions. [2021-10-11 02:23:20,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 762 transitions. [2021-10-11 02:23:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:23:20,379 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:20,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:20,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:23:20,380 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:20,382 INFO L82 PathProgramCache]: Analyzing trace with hash 345922742, now seen corresponding path program 1 times [2021-10-11 02:23:20,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:20,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854068376] [2021-10-11 02:23:20,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,460 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 02:23:20,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854068376] [2021-10-11 02:23:20,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:20,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708111742] [2021-10-11 02:23:20,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:20,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:20,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:20,463 INFO L87 Difference]: Start difference. First operand 290 states and 762 transitions. Second operand 5 states. [2021-10-11 02:23:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,506 INFO L93 Difference]: Finished difference Result 392 states and 1001 transitions. [2021-10-11 02:23:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:20,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:23:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,510 INFO L225 Difference]: With dead ends: 392 [2021-10-11 02:23:20,510 INFO L226 Difference]: Without dead ends: 326 [2021-10-11 02:23:20,510 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 02:23:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-11 02:23:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 270. [2021-10-11 02:23:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-10-11 02:23:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 698 transitions. [2021-10-11 02:23:20,522 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 698 transitions. Word has length 10 [2021-10-11 02:23:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:20,522 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 698 transitions. [2021-10-11 02:23:20,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 698 transitions. [2021-10-11 02:23:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:23:20,524 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:20,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:20,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:23:20,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:20,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2133634442, now seen corresponding path program 1 times [2021-10-11 02:23:20,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:20,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513799805] [2021-10-11 02:23:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,598 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 02:23:20,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513799805] [2021-10-11 02:23:20,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:20,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288352945] [2021-10-11 02:23:20,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:20,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:20,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:20,600 INFO L87 Difference]: Start difference. First operand 270 states and 698 transitions. Second operand 5 states. [2021-10-11 02:23:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,651 INFO L93 Difference]: Finished difference Result 356 states and 902 transitions. [2021-10-11 02:23:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:20,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:23:20,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,654 INFO L225 Difference]: With dead ends: 356 [2021-10-11 02:23:20,654 INFO L226 Difference]: Without dead ends: 312 [2021-10-11 02:23:20,655 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 02:23:20,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-11 02:23:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 260. [2021-10-11 02:23:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-10-11 02:23:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 664 transitions. [2021-10-11 02:23:20,666 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 664 transitions. Word has length 11 [2021-10-11 02:23:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:20,666 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 664 transitions. [2021-10-11 02:23:20,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 664 transitions. [2021-10-11 02:23:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:23:20,667 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:20,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:20,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:23:20,667 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:20,668 INFO L82 PathProgramCache]: Analyzing trace with hash -399190841, now seen corresponding path program 1 times [2021-10-11 02:23:20,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:20,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773978343] [2021-10-11 02:23:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,713 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 02:23:20,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773978343] [2021-10-11 02:23:20,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:20,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628470999] [2021-10-11 02:23:20,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:20,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:20,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:20,715 INFO L87 Difference]: Start difference. First operand 260 states and 664 transitions. Second operand 5 states. [2021-10-11 02:23:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,757 INFO L93 Difference]: Finished difference Result 406 states and 991 transitions. [2021-10-11 02:23:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:20,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:23:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,761 INFO L225 Difference]: With dead ends: 406 [2021-10-11 02:23:20,762 INFO L226 Difference]: Without dead ends: 324 [2021-10-11 02:23:20,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 02:23:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-10-11 02:23:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 244. [2021-10-11 02:23:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-10-11 02:23:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 598 transitions. [2021-10-11 02:23:20,774 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 598 transitions. Word has length 12 [2021-10-11 02:23:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:20,775 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 598 transitions. [2021-10-11 02:23:20,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 598 transitions. [2021-10-11 02:23:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:23:20,776 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:20,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:20,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:23:20,776 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:20,777 INFO L82 PathProgramCache]: Analyzing trace with hash -932777299, now seen corresponding path program 1 times [2021-10-11 02:23:20,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:20,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441916894] [2021-10-11 02:23:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,858 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 02:23:20,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441916894] [2021-10-11 02:23:20,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:20,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906686035] [2021-10-11 02:23:20,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:20,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:20,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:20,863 INFO L87 Difference]: Start difference. First operand 244 states and 598 transitions. Second operand 4 states. [2021-10-11 02:23:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,891 INFO L93 Difference]: Finished difference Result 248 states and 536 transitions. [2021-10-11 02:23:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:20,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:23:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,896 INFO L225 Difference]: With dead ends: 248 [2021-10-11 02:23:20,896 INFO L226 Difference]: Without dead ends: 187 [2021-10-11 02:23:20,897 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 02:23:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-11 02:23:20,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-10-11 02:23:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2021-10-11 02:23:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 395 transitions. [2021-10-11 02:23:20,904 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 395 transitions. Word has length 12 [2021-10-11 02:23:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:20,907 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 395 transitions. [2021-10-11 02:23:20,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 395 transitions. [2021-10-11 02:23:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:23:20,908 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:20,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:20,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:23:20,913 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:20,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:20,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1335013917, now seen corresponding path program 1 times [2021-10-11 02:23:20,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:20,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732721610] [2021-10-11 02:23:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:20,955 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 02:23:20,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732721610] [2021-10-11 02:23:20,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:20,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:20,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717804491] [2021-10-11 02:23:20,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:20,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:20,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:20,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:20,957 INFO L87 Difference]: Start difference. First operand 187 states and 395 transitions. Second operand 5 states. [2021-10-11 02:23:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:20,991 INFO L93 Difference]: Finished difference Result 267 states and 539 transitions. [2021-10-11 02:23:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:20,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:23:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:20,993 INFO L225 Difference]: With dead ends: 267 [2021-10-11 02:23:20,994 INFO L226 Difference]: Without dead ends: 221 [2021-10-11 02:23:20,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 02:23:20,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-11 02:23:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 174. [2021-10-11 02:23:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2021-10-11 02:23:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 363 transitions. [2021-10-11 02:23:21,001 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 363 transitions. Word has length 13 [2021-10-11 02:23:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:21,001 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 363 transitions. [2021-10-11 02:23:21,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 363 transitions. [2021-10-11 02:23:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:23:21,002 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:21,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:21,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:23:21,002 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:21,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1081898830, now seen corresponding path program 1 times [2021-10-11 02:23:21,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:21,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812097738] [2021-10-11 02:23:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:21,049 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 02:23:21,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812097738] [2021-10-11 02:23:21,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:21,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:21,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870154373] [2021-10-11 02:23:21,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:21,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:21,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:21,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:21,055 INFO L87 Difference]: Start difference. First operand 174 states and 363 transitions. Second operand 5 states. [2021-10-11 02:23:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:21,096 INFO L93 Difference]: Finished difference Result 258 states and 510 transitions. [2021-10-11 02:23:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:21,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:23:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:21,099 INFO L225 Difference]: With dead ends: 258 [2021-10-11 02:23:21,099 INFO L226 Difference]: Without dead ends: 212 [2021-10-11 02:23:21,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 02:23:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-11 02:23:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 165. [2021-10-11 02:23:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-10-11 02:23:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 340 transitions. [2021-10-11 02:23:21,107 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 340 transitions. Word has length 13 [2021-10-11 02:23:21,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:21,107 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 340 transitions. [2021-10-11 02:23:21,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 340 transitions. [2021-10-11 02:23:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:23:21,108 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:21,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:21,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:23:21,108 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash -144595800, now seen corresponding path program 1 times [2021-10-11 02:23:21,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:21,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919614475] [2021-10-11 02:23:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:21,190 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 02:23:21,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919614475] [2021-10-11 02:23:21,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:21,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:21,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241179696] [2021-10-11 02:23:21,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:21,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:21,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:21,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:21,192 INFO L87 Difference]: Start difference. First operand 165 states and 340 transitions. Second operand 5 states. [2021-10-11 02:23:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:21,225 INFO L93 Difference]: Finished difference Result 147 states and 274 transitions. [2021-10-11 02:23:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:23:21,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:23:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:21,226 INFO L225 Difference]: With dead ends: 147 [2021-10-11 02:23:21,226 INFO L226 Difference]: Without dead ends: 96 [2021-10-11 02:23:21,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:23:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-11 02:23:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-10-11 02:23:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-10-11 02:23:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 163 transitions. [2021-10-11 02:23:21,231 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 163 transitions. Word has length 14 [2021-10-11 02:23:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:21,231 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 163 transitions. [2021-10-11 02:23:21,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 163 transitions. [2021-10-11 02:23:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:23:21,232 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:21,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:21,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:23:21,233 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:21,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:21,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1619656222, now seen corresponding path program 1 times [2021-10-11 02:23:21,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:21,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614478132] [2021-10-11 02:23:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:21,328 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 02:23:21,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614478132] [2021-10-11 02:23:21,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:21,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:23:21,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059757446] [2021-10-11 02:23:21,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:23:21,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:21,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:23:21,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:23:21,330 INFO L87 Difference]: Start difference. First operand 96 states and 163 transitions. Second operand 6 states. [2021-10-11 02:23:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:21,355 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2021-10-11 02:23:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:23:21,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-10-11 02:23:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:21,356 INFO L225 Difference]: With dead ends: 82 [2021-10-11 02:23:21,356 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:21,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:21,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:23:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:21,357 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:21,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:23:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:21,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:21,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:23:21,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:21 BasicIcfg [2021-10-11 02:23:21,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:21,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:21,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:21,362 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:21,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:15" (3/4) ... [2021-10-11 02:23:21,365 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:21,372 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:23:21,372 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:23:21,372 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:23:21,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:23:21,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:23:21,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:21,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:21,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c63ee35-7aa0-419b-82b2-c338cccd9efd/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:21,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:21,435 INFO L168 Benchmark]: Toolchain (without parser) took 6734.54 ms. Allocated memory was 115.3 MB in the beginning and 188.7 MB in the end (delta: 73.4 MB). Free memory was 82.6 MB in the beginning and 152.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:21,435 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:21,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.38 ms. Allocated memory is still 115.3 MB. Free memory was 82.2 MB in the beginning and 70.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:21,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.36 ms. Allocated memory is still 115.3 MB. Free memory was 70.2 MB in the beginning and 68.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:21,436 INFO L168 Benchmark]: Boogie Preprocessor took 27.29 ms. Allocated memory is still 115.3 MB. Free memory was 68.0 MB in the beginning and 66.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:21,437 INFO L168 Benchmark]: RCFGBuilder took 476.61 ms. Allocated memory is still 115.3 MB. Free memory was 66.8 MB in the beginning and 45.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:21,437 INFO L168 Benchmark]: TraceAbstraction took 5473.18 ms. Allocated memory was 115.3 MB in the beginning and 188.7 MB in the end (delta: 73.4 MB). Free memory was 44.7 MB in the beginning and 155.9 MB in the end (delta: -111.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:21,437 INFO L168 Benchmark]: Witness Printer took 72.77 ms. Allocated memory is still 188.7 MB. Free memory was 155.9 MB in the beginning and 152.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:21,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 597.38 ms. Allocated memory is still 115.3 MB. Free memory was 82.2 MB in the beginning and 70.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.36 ms. Allocated memory is still 115.3 MB. Free memory was 70.2 MB in the beginning and 68.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.29 ms. Allocated memory is still 115.3 MB. Free memory was 68.0 MB in the beginning and 66.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 476.61 ms. Allocated memory is still 115.3 MB. Free memory was 66.8 MB in the beginning and 45.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5473.18 ms. Allocated memory was 115.3 MB in the beginning and 188.7 MB in the end (delta: 73.4 MB). Free memory was 44.7 MB in the beginning and 155.9 MB in the end (delta: -111.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.77 ms. Allocated memory is still 188.7 MB. Free memory was 155.9 MB in the beginning and 152.8 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 805 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 81 PlacesBefore, 32 PlacesAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2703 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 299 SDtfs, 274 SDslu, 492 SDs, 0 SdLazy, 170 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 398 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 6358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...