./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7 --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 804a6f1d000a9eac5cab22029525644887c7b13b33bf8b82b475e09952d467ca --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:43:44,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:43:44,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:43:44,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:43:44,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:43:44,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:43:44,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:43:44,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:43:44,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:43:44,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:43:44,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:43:44,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:43:44,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:43:44,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:43:44,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:43:44,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:43:44,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:43:44,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:43:44,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:43:44,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:43:44,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:43:44,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:43:44,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:43:44,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:43:44,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:43:44,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:43:44,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:43:44,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:43:44,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:43:44,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:43:44,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:43:44,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:43:44,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:43:44,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:43:44,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:43:44,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:43:44,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:43:44,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:43:44,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:43:44,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:43:44,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:43:44,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:43:44,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:43:44,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:43:44,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:43:44,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:43:44,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:43:44,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:43:44,427 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:43:44,428 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:43:44,428 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:43:44,428 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:43:44,430 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:43:44,430 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:43:44,431 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:43:44,431 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:43:44,431 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:43:44,431 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:43:44,432 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:43:44,432 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:43:44,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:43:44,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:43:44,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:43:44,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:43:44,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:43:44,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:43:44,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:43:44,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:43:44,438 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:43:44,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:43:44,439 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:43:44,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:43:44,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:43:44,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:43:44,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:43:44,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:43:44,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:43:44,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:43:44,442 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:43:44,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:43:44,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:43:44,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:43:44,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:43:44,443 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_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804a6f1d000a9eac5cab22029525644887c7b13b33bf8b82b475e09952d467ca [2021-11-25 18:43:44,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:43:44,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:43:44,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:43:44,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:43:44,873 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:43:44,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c [2021-11-25 18:43:44,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/data/93363a64e/393e03cd6f4a47b2b1424f8137332dd9/FLAG87a4e6d8f [2021-11-25 18:43:45,553 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:43:45,554 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c [2021-11-25 18:43:45,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/data/93363a64e/393e03cd6f4a47b2b1424f8137332dd9/FLAG87a4e6d8f [2021-11-25 18:43:45,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/data/93363a64e/393e03cd6f4a47b2b1424f8137332dd9 [2021-11-25 18:43:45,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:43:45,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:43:45,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:43:45,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:43:45,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:43:45,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:43:45" (1/1) ... [2021-11-25 18:43:45,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166cddab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:45, skipping insertion in model container [2021-11-25 18:43:45,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:43:45" (1/1) ... [2021-11-25 18:43:45,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:43:45,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:43:46,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c[4837,4850] [2021-11-25 18:43:46,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:43:46,216 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:43:46,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/sv-benchmarks/c/weaver/parallel-ticket-7.wvr.c[4837,4850] [2021-11-25 18:43:46,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:43:46,281 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:43:46,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46 WrapperNode [2021-11-25 18:43:46,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:43:46,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:43:46,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:43:46,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:43:46,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,355 INFO L137 Inliner]: procedures = 26, calls = 115, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 318 [2021-11-25 18:43:46,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:43:46,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:43:46,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:43:46,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:43:46,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:43:46,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:43:46,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:43:46,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:43:46,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (1/1) ... [2021-11-25 18:43:46,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:43:46,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:43:46,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:43:46,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a379eb-8a70-4f89-afbc-c8372f12a51e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:43:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:43:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:43:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:43:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:43:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-25 18:43:46,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-25 18:43:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-25 18:43:46,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-25 18:43:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-25 18:43:46,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-25 18:43:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-25 18:43:46,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-25 18:43:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:43:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-11-25 18:43:46,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-11-25 18:43:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-11-25 18:43:46,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-11-25 18:43:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-11-25 18:43:46,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-11-25 18:43:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 18:43:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 18:43:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:43:46,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:43:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:43:46,506 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 18:43:46,667 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:43:46,670 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:43:47,265 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:43:47,406 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:43:47,406 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:43:47,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:43:47 BoogieIcfgContainer [2021-11-25 18:43:47,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:43:47,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:43:47,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:43:47,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:43:47,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:43:45" (1/3) ... [2021-11-25 18:43:47,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478abc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:43:47, skipping insertion in model container [2021-11-25 18:43:47,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:43:46" (2/3) ... [2021-11-25 18:43:47,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478abc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:43:47, skipping insertion in model container [2021-11-25 18:43:47,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:43:47" (3/3) ... [2021-11-25 18:43:47,420 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-7.wvr.c [2021-11-25 18:43:47,426 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 18:43:47,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:43:47,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:43:47,442 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 18:43:47,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,529 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,530 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,530 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,530 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,531 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,531 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,531 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,531 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,532 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,532 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,535 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,535 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,535 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,535 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,536 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,536 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,536 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,537 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,537 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,537 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,537 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,538 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,538 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,538 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,539 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,539 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,539 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,540 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,540 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,540 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,541 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,541 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,541 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,542 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,542 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,542 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,542 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,543 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,543 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,543 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,544 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,544 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,544 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,544 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,545 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,545 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,545 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,546 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,546 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,546 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,546 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,550 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,551 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,551 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,551 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,552 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,552 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,553 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,555 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,556 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,556 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,556 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,556 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,557 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,557 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,560 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,560 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,561 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,561 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,561 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,562 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,563 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,563 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,563 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,563 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,564 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,564 WARN L322 ript$VariableManager]: TermVariabe |thread7Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,565 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,565 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork6_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 18:43:47,573 INFO L148 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-11-25 18:43:47,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:43:47,640 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:43:47,640 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-25 18:43:47,662 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 18:43:47,679 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 211 transitions, 478 flow [2021-11-25 18:43:47,682 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 211 transitions, 478 flow [2021-11-25 18:43:47,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 211 transitions, 478 flow [2021-11-25 18:43:47,841 INFO L129 PetriNetUnfolder]: 2/204 cut-off events. [2021-11-25 18:43:47,842 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-25 18:43:47,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 204 events. 2/204 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2021-11-25 18:43:47,855 INFO L116 LiptonReduction]: Number of co-enabled transitions 4182 [2021-11-25 18:44:04,341 INFO L131 LiptonReduction]: Checked pairs total: 10236 [2021-11-25 18:44:04,341 INFO L133 LiptonReduction]: Total number of compositions: 168 [2021-11-25 18:44:04,373 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 52 transitions, 160 flow [2021-11-25 18:44:05,324 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10932 states, 10931 states have (on average 5.001738175830208) internal successors, (54674), 10931 states have internal predecessors, (54674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 10932 states, 10931 states have (on average 5.001738175830208) internal successors, (54674), 10931 states have internal predecessors, (54674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:05,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:05,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:05,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:05,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1009427056, now seen corresponding path program 1 times [2021-11-25 18:44:05,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:05,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971106169] [2021-11-25 18:44:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:05,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:06,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:06,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971106169] [2021-11-25 18:44:06,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971106169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:06,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:06,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:44:06,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118738236] [2021-11-25 18:44:06,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:06,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:44:06,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:44:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:44:06,768 INFO L87 Difference]: Start difference. First operand has 10932 states, 10931 states have (on average 5.001738175830208) internal successors, (54674), 10931 states have internal predecessors, (54674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:09,009 INFO L93 Difference]: Finished difference Result 32756 states and 158035 transitions. [2021-11-25 18:44:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 18:44:09,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:10,012 INFO L225 Difference]: With dead ends: 32756 [2021-11-25 18:44:10,012 INFO L226 Difference]: Without dead ends: 32756 [2021-11-25 18:44:10,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:44:10,018 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 183 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:10,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 0 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:44:10,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32756 states. [2021-11-25 18:44:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32756 to 17268. [2021-11-25 18:44:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17268 states, 17267 states have (on average 5.007702554004749) internal successors, (86468), 17267 states have internal predecessors, (86468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17268 states to 17268 states and 86468 transitions. [2021-11-25 18:44:13,161 INFO L78 Accepts]: Start accepts. Automaton has 17268 states and 86468 transitions. Word has length 44 [2021-11-25 18:44:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:13,163 INFO L470 AbstractCegarLoop]: Abstraction has 17268 states and 86468 transitions. [2021-11-25 18:44:13,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 17268 states and 86468 transitions. [2021-11-25 18:44:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:13,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:13,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:13,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:44:13,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1897515354, now seen corresponding path program 2 times [2021-11-25 18:44:13,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:13,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943042660] [2021-11-25 18:44:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:13,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:14,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943042660] [2021-11-25 18:44:14,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943042660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:14,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:14,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:44:14,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034416284] [2021-11-25 18:44:14,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:14,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:44:14,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:14,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:44:14,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:44:14,160 INFO L87 Difference]: Start difference. First operand 17268 states and 86468 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:15,389 INFO L93 Difference]: Finished difference Result 26769 states and 130960 transitions. [2021-11-25 18:44:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:44:15,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:15,576 INFO L225 Difference]: With dead ends: 26769 [2021-11-25 18:44:15,576 INFO L226 Difference]: Without dead ends: 19842 [2021-11-25 18:44:15,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:44:15,581 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 134 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:15,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 0 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:44:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19842 states. [2021-11-25 18:44:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19842 to 19842. [2021-11-25 18:44:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19842 states, 19841 states have (on average 4.804344539085732) internal successors, (95323), 19841 states have internal predecessors, (95323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19842 states to 19842 states and 95323 transitions. [2021-11-25 18:44:17,113 INFO L78 Accepts]: Start accepts. Automaton has 19842 states and 95323 transitions. Word has length 44 [2021-11-25 18:44:17,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:17,114 INFO L470 AbstractCegarLoop]: Abstraction has 19842 states and 95323 transitions. [2021-11-25 18:44:17,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 19842 states and 95323 transitions. [2021-11-25 18:44:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:17,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:17,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:17,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:44:17,218 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1221850698, now seen corresponding path program 3 times [2021-11-25 18:44:17,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:17,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175630941] [2021-11-25 18:44:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:17,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:17,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:17,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175630941] [2021-11-25 18:44:17,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175630941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:17,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:17,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:44:17,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410151253] [2021-11-25 18:44:17,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:17,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:44:17,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:17,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:44:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:44:17,959 INFO L87 Difference]: Start difference. First operand 19842 states and 95323 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:18,766 INFO L93 Difference]: Finished difference Result 21044 states and 101949 transitions. [2021-11-25 18:44:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:44:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:18,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:19,018 INFO L225 Difference]: With dead ends: 21044 [2021-11-25 18:44:19,019 INFO L226 Difference]: Without dead ends: 21044 [2021-11-25 18:44:19,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:44:19,024 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:19,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:44:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21044 states. [2021-11-25 18:44:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21044 to 20380. [2021-11-25 18:44:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20380 states, 20379 states have (on average 4.816575886942441) internal successors, (98157), 20379 states have internal predecessors, (98157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20380 states to 20380 states and 98157 transitions. [2021-11-25 18:44:20,380 INFO L78 Accepts]: Start accepts. Automaton has 20380 states and 98157 transitions. Word has length 44 [2021-11-25 18:44:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:20,380 INFO L470 AbstractCegarLoop]: Abstraction has 20380 states and 98157 transitions. [2021-11-25 18:44:20,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand 20380 states and 98157 transitions. [2021-11-25 18:44:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:20,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:20,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:20,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:44:20,502 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:20,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash -719377236, now seen corresponding path program 4 times [2021-11-25 18:44:20,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:20,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36880194] [2021-11-25 18:44:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:20,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:20,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:20,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36880194] [2021-11-25 18:44:20,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36880194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:20,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:20,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:44:20,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088199387] [2021-11-25 18:44:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:20,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:44:20,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:20,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:44:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:44:20,932 INFO L87 Difference]: Start difference. First operand 20380 states and 98157 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:22,348 INFO L93 Difference]: Finished difference Result 21176 states and 102609 transitions. [2021-11-25 18:44:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:44:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:22,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:22,502 INFO L225 Difference]: With dead ends: 21176 [2021-11-25 18:44:22,503 INFO L226 Difference]: Without dead ends: 21176 [2021-11-25 18:44:22,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:44:22,508 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 104 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:22,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 0 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:44:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21176 states. [2021-11-25 18:44:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21176 to 20468. [2021-11-25 18:44:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20468 states, 20467 states have (on average 4.817950847706063) internal successors, (98609), 20467 states have internal predecessors, (98609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 98609 transitions. [2021-11-25 18:44:23,644 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 98609 transitions. Word has length 44 [2021-11-25 18:44:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:23,645 INFO L470 AbstractCegarLoop]: Abstraction has 20468 states and 98609 transitions. [2021-11-25 18:44:23,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 98609 transitions. [2021-11-25 18:44:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:23,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:23,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:23,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:44:23,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:23,729 INFO L85 PathProgramCache]: Analyzing trace with hash -325328026, now seen corresponding path program 5 times [2021-11-25 18:44:23,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:23,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430435899] [2021-11-25 18:44:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:23,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:24,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:24,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430435899] [2021-11-25 18:44:24,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430435899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:24,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:24,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:44:24,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311363092] [2021-11-25 18:44:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:24,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:44:24,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:44:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:44:24,175 INFO L87 Difference]: Start difference. First operand 20468 states and 98609 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:26,254 INFO L93 Difference]: Finished difference Result 27670 states and 131895 transitions. [2021-11-25 18:44:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-25 18:44:26,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:26,430 INFO L225 Difference]: With dead ends: 27670 [2021-11-25 18:44:26,430 INFO L226 Difference]: Without dead ends: 27670 [2021-11-25 18:44:26,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-11-25 18:44:26,433 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:26,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:44:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27670 states. [2021-11-25 18:44:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27670 to 24512. [2021-11-25 18:44:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24512 states, 24511 states have (on average 4.785606462404635) internal successors, (117300), 24511 states have internal predecessors, (117300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24512 states to 24512 states and 117300 transitions. [2021-11-25 18:44:27,848 INFO L78 Accepts]: Start accepts. Automaton has 24512 states and 117300 transitions. Word has length 44 [2021-11-25 18:44:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:27,849 INFO L470 AbstractCegarLoop]: Abstraction has 24512 states and 117300 transitions. [2021-11-25 18:44:27,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 24512 states and 117300 transitions. [2021-11-25 18:44:27,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:27,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:27,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:27,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:44:27,948 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:27,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:27,949 INFO L85 PathProgramCache]: Analyzing trace with hash -20127062, now seen corresponding path program 6 times [2021-11-25 18:44:27,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:27,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97399483] [2021-11-25 18:44:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:27,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:28,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:28,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97399483] [2021-11-25 18:44:28,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97399483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:28,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:28,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:44:28,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416191443] [2021-11-25 18:44:28,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:28,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:44:28,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:28,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:44:28,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:44:28,274 INFO L87 Difference]: Start difference. First operand 24512 states and 117300 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:29,566 INFO L93 Difference]: Finished difference Result 27100 states and 129412 transitions. [2021-11-25 18:44:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:44:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:29,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:29,732 INFO L225 Difference]: With dead ends: 27100 [2021-11-25 18:44:29,732 INFO L226 Difference]: Without dead ends: 27100 [2021-11-25 18:44:29,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:44:29,733 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:29,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:44:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27100 states. [2021-11-25 18:44:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27100 to 25780. [2021-11-25 18:44:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25780 states, 25779 states have (on average 4.769541099344428) internal successors, (122954), 25779 states have internal predecessors, (122954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25780 states to 25780 states and 122954 transitions. [2021-11-25 18:44:31,199 INFO L78 Accepts]: Start accepts. Automaton has 25780 states and 122954 transitions. Word has length 44 [2021-11-25 18:44:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:31,199 INFO L470 AbstractCegarLoop]: Abstraction has 25780 states and 122954 transitions. [2021-11-25 18:44:31,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 25780 states and 122954 transitions. [2021-11-25 18:44:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:31,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:31,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:31,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:44:31,286 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash -689244824, now seen corresponding path program 7 times [2021-11-25 18:44:31,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:31,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218085347] [2021-11-25 18:44:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:31,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:31,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:31,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218085347] [2021-11-25 18:44:31,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218085347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:31,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:31,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:44:31,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124852397] [2021-11-25 18:44:31,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:31,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:44:31,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:44:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:44:31,645 INFO L87 Difference]: Start difference. First operand 25780 states and 122954 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:33,518 INFO L93 Difference]: Finished difference Result 58248 states and 271986 transitions. [2021-11-25 18:44:33,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:44:33,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:34,264 INFO L225 Difference]: With dead ends: 58248 [2021-11-25 18:44:34,264 INFO L226 Difference]: Without dead ends: 58248 [2021-11-25 18:44:34,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:44:34,265 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:34,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 18:44:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58248 states. [2021-11-25 18:44:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58248 to 34988. [2021-11-25 18:44:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34988 states, 34987 states have (on average 4.739360333838283) internal successors, (165816), 34987 states have internal predecessors, (165816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34988 states to 34988 states and 165816 transitions. [2021-11-25 18:44:36,435 INFO L78 Accepts]: Start accepts. Automaton has 34988 states and 165816 transitions. Word has length 44 [2021-11-25 18:44:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:36,435 INFO L470 AbstractCegarLoop]: Abstraction has 34988 states and 165816 transitions. [2021-11-25 18:44:36,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 34988 states and 165816 transitions. [2021-11-25 18:44:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:36,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:36,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:36,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:44:36,563 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash -98206936, now seen corresponding path program 8 times [2021-11-25 18:44:36,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:36,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460478547] [2021-11-25 18:44:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:36,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:36,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:36,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460478547] [2021-11-25 18:44:36,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460478547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:36,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:36,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:44:36,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875734916] [2021-11-25 18:44:36,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:36,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:44:36,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:44:36,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:44:36,936 INFO L87 Difference]: Start difference. First operand 34988 states and 165816 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:39,032 INFO L93 Difference]: Finished difference Result 37144 states and 175126 transitions. [2021-11-25 18:44:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:44:39,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:39,233 INFO L225 Difference]: With dead ends: 37144 [2021-11-25 18:44:39,233 INFO L226 Difference]: Without dead ends: 37112 [2021-11-25 18:44:39,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:44:39,235 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:39,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:44:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37112 states. [2021-11-25 18:44:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37112 to 35220. [2021-11-25 18:44:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35220 states, 35219 states have (on average 4.728470427894035) internal successors, (166532), 35219 states have internal predecessors, (166532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35220 states to 35220 states and 166532 transitions. [2021-11-25 18:44:41,060 INFO L78 Accepts]: Start accepts. Automaton has 35220 states and 166532 transitions. Word has length 44 [2021-11-25 18:44:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:41,061 INFO L470 AbstractCegarLoop]: Abstraction has 35220 states and 166532 transitions. [2021-11-25 18:44:41,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 35220 states and 166532 transitions. [2021-11-25 18:44:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:41,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:41,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:41,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:44:41,163 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:41,164 INFO L85 PathProgramCache]: Analyzing trace with hash -66919928, now seen corresponding path program 9 times [2021-11-25 18:44:41,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:41,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38871963] [2021-11-25 18:44:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:41,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:41,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:41,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38871963] [2021-11-25 18:44:41,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38871963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:41,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:41,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:44:41,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127672751] [2021-11-25 18:44:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:41,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:44:41,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:44:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:44:41,497 INFO L87 Difference]: Start difference. First operand 35220 states and 166532 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:43,733 INFO L93 Difference]: Finished difference Result 55636 states and 256222 transitions. [2021-11-25 18:44:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:44:43,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:44,078 INFO L225 Difference]: With dead ends: 55636 [2021-11-25 18:44:44,078 INFO L226 Difference]: Without dead ends: 55556 [2021-11-25 18:44:44,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:44:44,079 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:44,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:44:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55556 states. [2021-11-25 18:44:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55556 to 36500. [2021-11-25 18:44:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36500 states, 36499 states have (on average 4.728841886079071) internal successors, (172598), 36499 states have internal predecessors, (172598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36500 states to 36500 states and 172598 transitions. [2021-11-25 18:44:46,190 INFO L78 Accepts]: Start accepts. Automaton has 36500 states and 172598 transitions. Word has length 44 [2021-11-25 18:44:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:46,191 INFO L470 AbstractCegarLoop]: Abstraction has 36500 states and 172598 transitions. [2021-11-25 18:44:46,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 36500 states and 172598 transitions. [2021-11-25 18:44:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:46,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:46,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:46,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:44:46,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash 418919294, now seen corresponding path program 10 times [2021-11-25 18:44:46,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:46,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086434880] [2021-11-25 18:44:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:46,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:46,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:46,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086434880] [2021-11-25 18:44:46,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086434880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:46,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:46,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:44:46,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683812946] [2021-11-25 18:44:46,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:46,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:44:46,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:46,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:44:46,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:44:46,551 INFO L87 Difference]: Start difference. First operand 36500 states and 172598 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:48,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:48,678 INFO L93 Difference]: Finished difference Result 62616 states and 287047 transitions. [2021-11-25 18:44:48,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 18:44:48,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:48,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:48,977 INFO L225 Difference]: With dead ends: 62616 [2021-11-25 18:44:48,977 INFO L226 Difference]: Without dead ends: 62528 [2021-11-25 18:44:48,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:44:48,978 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:48,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:44:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62528 states. [2021-11-25 18:44:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62528 to 40672. [2021-11-25 18:44:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40672 states, 40671 states have (on average 4.732438346733545) internal successors, (192473), 40671 states have internal predecessors, (192473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40672 states to 40672 states and 192473 transitions. [2021-11-25 18:44:51,309 INFO L78 Accepts]: Start accepts. Automaton has 40672 states and 192473 transitions. Word has length 44 [2021-11-25 18:44:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:51,310 INFO L470 AbstractCegarLoop]: Abstraction has 40672 states and 192473 transitions. [2021-11-25 18:44:51,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 40672 states and 192473 transitions. [2021-11-25 18:44:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:52,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:52,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:52,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:44:52,083 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:52,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1749042092, now seen corresponding path program 11 times [2021-11-25 18:44:52,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:52,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68679740] [2021-11-25 18:44:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:52,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:52,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:52,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68679740] [2021-11-25 18:44:52,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68679740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:52,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:52,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:44:52,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655132615] [2021-11-25 18:44:52,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:52,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:44:52,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:52,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:44:52,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:44:52,517 INFO L87 Difference]: Start difference. First operand 40672 states and 192473 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:54,159 INFO L93 Difference]: Finished difference Result 55450 states and 261547 transitions. [2021-11-25 18:44:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 18:44:54,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:54,537 INFO L225 Difference]: With dead ends: 55450 [2021-11-25 18:44:54,538 INFO L226 Difference]: Without dead ends: 55450 [2021-11-25 18:44:54,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:44:54,539 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:54,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:44:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55450 states. [2021-11-25 18:44:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55450 to 41026. [2021-11-25 18:44:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41026 states, 41025 states have (on average 4.738037781840341) internal successors, (194378), 41025 states have internal predecessors, (194378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41026 states to 41026 states and 194378 transitions. [2021-11-25 18:44:57,774 INFO L78 Accepts]: Start accepts. Automaton has 41026 states and 194378 transitions. Word has length 44 [2021-11-25 18:44:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:57,775 INFO L470 AbstractCegarLoop]: Abstraction has 41026 states and 194378 transitions. [2021-11-25 18:44:57,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 41026 states and 194378 transitions. [2021-11-25 18:44:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:44:58,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:58,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:58,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:44:58,020 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:44:58,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash 284940222, now seen corresponding path program 12 times [2021-11-25 18:44:58,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:58,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159811070] [2021-11-25 18:44:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:58,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:44:58,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:58,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159811070] [2021-11-25 18:44:58,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159811070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:58,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:58,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:44:58,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709430896] [2021-11-25 18:44:58,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:58,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:44:58,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:44:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:44:58,303 INFO L87 Difference]: Start difference. First operand 41026 states and 194378 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:59,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:59,791 INFO L93 Difference]: Finished difference Result 65554 states and 299495 transitions. [2021-11-25 18:44:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 18:44:59,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:44:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:00,093 INFO L225 Difference]: With dead ends: 65554 [2021-11-25 18:45:00,093 INFO L226 Difference]: Without dead ends: 65330 [2021-11-25 18:45:00,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:45:00,094 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 128 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:00,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 0 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:45:00,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65330 states. [2021-11-25 18:45:02,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65330 to 43066. [2021-11-25 18:45:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43066 states, 43065 states have (on average 4.730871937768489) internal successors, (203735), 43065 states have internal predecessors, (203735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43066 states to 43066 states and 203735 transitions. [2021-11-25 18:45:03,191 INFO L78 Accepts]: Start accepts. Automaton has 43066 states and 203735 transitions. Word has length 44 [2021-11-25 18:45:03,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:03,192 INFO L470 AbstractCegarLoop]: Abstraction has 43066 states and 203735 transitions. [2021-11-25 18:45:03,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 43066 states and 203735 transitions. [2021-11-25 18:45:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:45:03,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:03,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:45:03,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:45:03,313 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-11-25 18:45:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1460460212, now seen corresponding path program 13 times [2021-11-25 18:45:03,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:03,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786243477] [2021-11-25 18:45:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:03,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:45:03,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:03,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786243477] [2021-11-25 18:45:03,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786243477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:03,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:03,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:45:03,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008640188] [2021-11-25 18:45:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:03,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:45:03,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:45:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:45:03,562 INFO L87 Difference]: Start difference. First operand 43066 states and 203735 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:04,534 INFO L93 Difference]: Finished difference Result 46946 states and 219569 transitions. [2021-11-25 18:45:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:45:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-25 18:45:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:05,445 INFO L225 Difference]: With dead ends: 46946 [2021-11-25 18:45:05,446 INFO L226 Difference]: Without dead ends: 46834 [2021-11-25 18:45:05,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:45:05,449 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:05,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:45:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46834 states.