./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:10:10,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:10:10,386 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:10:10,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:10:10,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:10:10,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:10:10,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:10:10,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:10:10,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:10:10,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:10:10,448 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:10:10,449 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:10:10,449 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:10:10,451 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:10:10,452 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:10:10,452 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:10:10,453 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:10:10,453 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:10:10,454 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:10:10,454 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:10:10,455 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:10:10,456 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:10:10,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:10:10,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:10:10,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:10:10,458 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:10:10,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:10:10,459 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:10:10,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:10:10,460 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:10:10,462 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:10:10,462 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:10:10,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:10:10,463 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:10:10,463 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:10:10,464 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:10:10,464 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:10:10,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:10:10,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:10:10,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:10,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:10:10,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:10:10,466 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:10:10,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:10:10,467 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:10:10,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:10:10,468 INFO L153 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_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-12 00:10:10,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:10:10,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:10:10,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:10:10,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:10:10,840 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:10:10,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-12 00:10:14,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:10:14,429 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:10:14,430 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-12 00:10:14,458 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/data/badd9d805/17c637feb743456ab69398e298af92f6/FLAG7f3d9180d [2023-11-12 00:10:14,470 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/data/badd9d805/17c637feb743456ab69398e298af92f6 [2023-11-12 00:10:14,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:10:14,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:10:14,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:14,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:10:14,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:10:14,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:14" (1/1) ... [2023-11-12 00:10:14,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39159a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:14, skipping insertion in model container [2023-11-12 00:10:14,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:14" (1/1) ... [2023-11-12 00:10:14,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:10:14,761 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:10:15,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:15,194 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:10:15,212 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:10:15,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:15,318 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:10:15,318 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:10:15,318 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:10:15,327 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:10:15,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15 WrapperNode [2023-11-12 00:10:15,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:15,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:15,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:10:15,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:10:15,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,412 INFO L138 Inliner]: procedures = 325, calls = 54, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2023-11-12 00:10:15,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:15,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:10:15,414 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:10:15,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:10:15,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:10:15,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:10:15,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:10:15,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:10:15,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (1/1) ... [2023-11-12 00:10:15,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:15,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:15,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:10:15,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:10:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:10:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:10:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:10:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:10:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:10:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-12 00:10:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-12 00:10:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:10:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:10:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:10:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:10:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:10:15,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:10:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:10:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:10:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:10:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:10:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:10:15,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:10:15,602 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:10:15,780 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:10:15,781 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:10:16,268 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:10:16,279 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:10:16,280 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:10:16,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:16 BoogieIcfgContainer [2023-11-12 00:10:16,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:10:16,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:10:16,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:10:16,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:10:16,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:10:14" (1/3) ... [2023-11-12 00:10:16,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1396074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:16, skipping insertion in model container [2023-11-12 00:10:16,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:15" (2/3) ... [2023-11-12 00:10:16,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1396074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:16, skipping insertion in model container [2023-11-12 00:10:16,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:16" (3/3) ... [2023-11-12 00:10:16,298 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2023-11-12 00:10:16,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:10:16,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-12 00:10:16,319 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:10:16,552 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-12 00:10:16,601 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:10:16,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 258 transitions, 613 flow [2023-11-12 00:10:16,619 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 258 transitions, 613 flow [2023-11-12 00:10:16,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 258 transitions, 613 flow [2023-11-12 00:10:16,758 INFO L124 PetriNetUnfolderBase]: 8/179 cut-off events. [2023-11-12 00:10:16,758 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 00:10:16,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 179 events. 8/179 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 154. Up to 3 conditions per place. [2023-11-12 00:10:16,773 INFO L119 LiptonReduction]: Number of co-enabled transitions 2920 [2023-11-12 00:10:24,051 INFO L134 LiptonReduction]: Checked pairs total: 11061 [2023-11-12 00:10:24,051 INFO L136 LiptonReduction]: Total number of compositions: 193 [2023-11-12 00:10:24,060 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 154 places, 143 transitions, 383 flow [2023-11-12 00:10:25,163 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15707 states, 14485 states have (on average 4.8327925440110455) internal successors, (70003), 15706 states have internal predecessors, (70003), 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) [2023-11-12 00:10:25,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:10:25,190 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@de58adc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:10:25,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-11-12 00:10:25,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 15707 states, 14485 states have (on average 4.8327925440110455) internal successors, (70003), 15706 states have internal predecessors, (70003), 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) [2023-11-12 00:10:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 00:10:25,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:25,227 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 00:10:25,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:25,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 704, now seen corresponding path program 1 times [2023-11-12 00:10:25,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:25,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731346174] [2023-11-12 00:10:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:25,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:25,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731346174] [2023-11-12 00:10:25,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731346174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:25,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:25,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 00:10:25,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622002598] [2023-11-12 00:10:25,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:25,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:10:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:25,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:10:25,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:10:25,568 INFO L87 Difference]: Start difference. First operand has 15707 states, 14485 states have (on average 4.8327925440110455) internal successors, (70003), 15706 states have internal predecessors, (70003), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-12 00:10:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:26,140 INFO L93 Difference]: Finished difference Result 15703 states and 69999 transitions. [2023-11-12 00:10:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:10:26,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2023-11-12 00:10:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:26,519 INFO L225 Difference]: With dead ends: 15703 [2023-11-12 00:10:26,519 INFO L226 Difference]: Without dead ends: 15703 [2023-11-12 00:10:26,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:10:26,524 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:26,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15703 states. [2023-11-12 00:10:27,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15703 to 15703. [2023-11-12 00:10:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15703 states, 14485 states have (on average 4.8325163962720055) internal successors, (69999), 15702 states have internal predecessors, (69999), 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) [2023-11-12 00:10:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15703 states to 15703 states and 69999 transitions. [2023-11-12 00:10:27,900 INFO L78 Accepts]: Start accepts. Automaton has 15703 states and 69999 transitions. Word has length 1 [2023-11-12 00:10:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:27,901 INFO L495 AbstractCegarLoop]: Abstraction has 15703 states and 69999 transitions. [2023-11-12 00:10:27,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-12 00:10:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 15703 states and 69999 transitions. [2023-11-12 00:10:27,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:10:27,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:27,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:10:27,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:10:27,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:27,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:27,909 INFO L85 PathProgramCache]: Analyzing trace with hash 692319, now seen corresponding path program 1 times [2023-11-12 00:10:27,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:27,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110571017] [2023-11-12 00:10:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:27,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:28,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:28,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110571017] [2023-11-12 00:10:28,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110571017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:28,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:28,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:10:28,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755442488] [2023-11-12 00:10:28,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:28,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:28,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:28,106 INFO L87 Difference]: Start difference. First operand 15703 states and 69999 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-12 00:10:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:28,739 INFO L93 Difference]: Finished difference Result 11793 states and 51538 transitions. [2023-11-12 00:10:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-12 00:10:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:28,876 INFO L225 Difference]: With dead ends: 11793 [2023-11-12 00:10:28,877 INFO L226 Difference]: Without dead ends: 11793 [2023-11-12 00:10:28,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:28,878 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:28,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 17 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11793 states. [2023-11-12 00:10:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11793 to 11784. [2023-11-12 00:10:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11784 states, 10970 states have (on average 4.697265268915223) internal successors, (51529), 11783 states have internal predecessors, (51529), 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) [2023-11-12 00:10:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11784 states to 11784 states and 51529 transitions. [2023-11-12 00:10:29,705 INFO L78 Accepts]: Start accepts. Automaton has 11784 states and 51529 transitions. Word has length 3 [2023-11-12 00:10:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:29,706 INFO L495 AbstractCegarLoop]: Abstraction has 11784 states and 51529 transitions. [2023-11-12 00:10:29,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-12 00:10:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 11784 states and 51529 transitions. [2023-11-12 00:10:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:10:29,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:29,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:10:29,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:10:29,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:29,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 692320, now seen corresponding path program 1 times [2023-11-12 00:10:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:29,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546725099] [2023-11-12 00:10:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:29,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:29,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546725099] [2023-11-12 00:10:29,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546725099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:29,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:29,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:10:29,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660445878] [2023-11-12 00:10:29,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:29,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:29,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:29,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:29,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:29,794 INFO L87 Difference]: Start difference. First operand 11784 states and 51529 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-12 00:10:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:30,299 INFO L93 Difference]: Finished difference Result 15710 states and 66086 transitions. [2023-11-12 00:10:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-12 00:10:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:30,463 INFO L225 Difference]: With dead ends: 15710 [2023-11-12 00:10:30,463 INFO L226 Difference]: Without dead ends: 15710 [2023-11-12 00:10:30,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:30,465 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:30,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 65 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15710 states. [2023-11-12 00:10:31,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15710 to 11783. [2023-11-12 00:10:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11783 states, 10969 states have (on average 4.69751116783663) internal successors, (51527), 11782 states have internal predecessors, (51527), 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) [2023-11-12 00:10:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11783 states to 11783 states and 51527 transitions. [2023-11-12 00:10:31,291 INFO L78 Accepts]: Start accepts. Automaton has 11783 states and 51527 transitions. Word has length 3 [2023-11-12 00:10:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:31,291 INFO L495 AbstractCegarLoop]: Abstraction has 11783 states and 51527 transitions. [2023-11-12 00:10:31,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-12 00:10:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 11783 states and 51527 transitions. [2023-11-12 00:10:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:10:31,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:31,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:10:31,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:10:31,293 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:31,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:31,295 INFO L85 PathProgramCache]: Analyzing trace with hash 21460336, now seen corresponding path program 1 times [2023-11-12 00:10:31,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:31,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958300672] [2023-11-12 00:10:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:31,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958300672] [2023-11-12 00:10:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958300672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:31,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490926772] [2023-11-12 00:10:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:31,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:31,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:31,670 INFO L87 Difference]: Start difference. First operand 11783 states and 51527 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-12 00:10:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:31,886 INFO L93 Difference]: Finished difference Result 7869 states and 33059 transitions. [2023-11-12 00:10:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:31,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-12 00:10:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:31,946 INFO L225 Difference]: With dead ends: 7869 [2023-11-12 00:10:31,946 INFO L226 Difference]: Without dead ends: 7869 [2023-11-12 00:10:31,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:31,950 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 145 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:31,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 10 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7869 states. [2023-11-12 00:10:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7869 to 7860. [2023-11-12 00:10:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7860 states, 7451 states have (on average 4.435646221983626) internal successors, (33050), 7859 states have internal predecessors, (33050), 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) [2023-11-12 00:10:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7860 states to 7860 states and 33050 transitions. [2023-11-12 00:10:32,396 INFO L78 Accepts]: Start accepts. Automaton has 7860 states and 33050 transitions. Word has length 4 [2023-11-12 00:10:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:32,397 INFO L495 AbstractCegarLoop]: Abstraction has 7860 states and 33050 transitions. [2023-11-12 00:10:32,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-12 00:10:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 7860 states and 33050 transitions. [2023-11-12 00:10:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:10:32,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:32,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:32,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:10:32,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:32,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash -633108901, now seen corresponding path program 1 times [2023-11-12 00:10:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:32,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22197909] [2023-11-12 00:10:32,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:32,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:32,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:32,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22197909] [2023-11-12 00:10:32,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22197909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:32,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:32,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:32,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008730625] [2023-11-12 00:10:32,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:32,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:32,820 INFO L87 Difference]: Start difference. First operand 7860 states and 33050 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:33,009 INFO L93 Difference]: Finished difference Result 7854 states and 33039 transitions. [2023-11-12 00:10:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:33,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:10:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:33,066 INFO L225 Difference]: With dead ends: 7854 [2023-11-12 00:10:33,066 INFO L226 Difference]: Without dead ends: 7854 [2023-11-12 00:10:33,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:33,067 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:33,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 17 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7854 states. [2023-11-12 00:10:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7854 to 7854. [2023-11-12 00:10:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7854 states, 7447 states have (on average 4.436551631529475) internal successors, (33039), 7853 states have internal predecessors, (33039), 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) [2023-11-12 00:10:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7854 states to 7854 states and 33039 transitions. [2023-11-12 00:10:33,435 INFO L78 Accepts]: Start accepts. Automaton has 7854 states and 33039 transitions. Word has length 7 [2023-11-12 00:10:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:33,438 INFO L495 AbstractCegarLoop]: Abstraction has 7854 states and 33039 transitions. [2023-11-12 00:10:33,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7854 states and 33039 transitions. [2023-11-12 00:10:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:10:33,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:33,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:33,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:10:33,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:33,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash -633108900, now seen corresponding path program 1 times [2023-11-12 00:10:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:33,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706057078] [2023-11-12 00:10:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:33,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:33,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706057078] [2023-11-12 00:10:33,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706057078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:33,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244135495] [2023-11-12 00:10:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:33,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:33,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:33,820 INFO L87 Difference]: Start difference. First operand 7854 states and 33039 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:33,990 INFO L93 Difference]: Finished difference Result 7848 states and 33028 transitions. [2023-11-12 00:10:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:10:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:34,034 INFO L225 Difference]: With dead ends: 7848 [2023-11-12 00:10:34,034 INFO L226 Difference]: Without dead ends: 7848 [2023-11-12 00:10:34,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:34,035 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 126 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:34,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 11 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7848 states. [2023-11-12 00:10:34,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7848 to 7848. [2023-11-12 00:10:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7848 states, 7443 states have (on average 4.437458014241569) internal successors, (33028), 7847 states have internal predecessors, (33028), 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) [2023-11-12 00:10:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7848 states to 7848 states and 33028 transitions. [2023-11-12 00:10:34,324 INFO L78 Accepts]: Start accepts. Automaton has 7848 states and 33028 transitions. Word has length 7 [2023-11-12 00:10:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:34,324 INFO L495 AbstractCegarLoop]: Abstraction has 7848 states and 33028 transitions. [2023-11-12 00:10:34,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 7848 states and 33028 transitions. [2023-11-12 00:10:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:10:34,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:34,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:10:34,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:34,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash -818672107, now seen corresponding path program 1 times [2023-11-12 00:10:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:34,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150560309] [2023-11-12 00:10:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:34,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:34,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:34,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150560309] [2023-11-12 00:10:34,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150560309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:34,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:34,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:10:34,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316267663] [2023-11-12 00:10:34,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:34,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:10:34,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:34,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:10:34,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:10:34,824 INFO L87 Difference]: Start difference. First operand 7848 states and 33028 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-12 00:10:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:35,019 INFO L93 Difference]: Finished difference Result 5344 states and 21272 transitions. [2023-11-12 00:10:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:35,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2023-11-12 00:10:35,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:35,054 INFO L225 Difference]: With dead ends: 5344 [2023-11-12 00:10:35,054 INFO L226 Difference]: Without dead ends: 5344 [2023-11-12 00:10:35,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:10:35,056 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:35,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 12 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:35,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2023-11-12 00:10:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5344. [2023-11-12 00:10:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5103 states have (on average 4.168528316676465) internal successors, (21272), 5343 states have internal predecessors, (21272), 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) [2023-11-12 00:10:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 21272 transitions. [2023-11-12 00:10:35,291 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 21272 transitions. Word has length 14 [2023-11-12 00:10:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:35,292 INFO L495 AbstractCegarLoop]: Abstraction has 5344 states and 21272 transitions. [2023-11-12 00:10:35,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-12 00:10:35,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 21272 transitions. [2023-11-12 00:10:35,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:10:35,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:35,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:35,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:10:35,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:35,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:35,296 INFO L85 PathProgramCache]: Analyzing trace with hash -764865454, now seen corresponding path program 1 times [2023-11-12 00:10:35,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:35,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46547639] [2023-11-12 00:10:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:35,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:35,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:35,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46547639] [2023-11-12 00:10:35,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46547639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:35,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:35,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:10:35,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980868324] [2023-11-12 00:10:35,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:35,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:10:35,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:10:35,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:35,672 INFO L87 Difference]: Start difference. First operand 5344 states and 21272 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-12 00:10:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:35,861 INFO L93 Difference]: Finished difference Result 4824 states and 19276 transitions. [2023-11-12 00:10:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2023-11-12 00:10:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:35,892 INFO L225 Difference]: With dead ends: 4824 [2023-11-12 00:10:35,893 INFO L226 Difference]: Without dead ends: 4824 [2023-11-12 00:10:35,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:35,894 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 59 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:35,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 14 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:35,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2023-11-12 00:10:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4824. [2023-11-12 00:10:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 4643 states have (on average 4.15162610381219) internal successors, (19276), 4823 states have internal predecessors, (19276), 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) [2023-11-12 00:10:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 19276 transitions. [2023-11-12 00:10:36,104 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 19276 transitions. Word has length 16 [2023-11-12 00:10:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:36,104 INFO L495 AbstractCegarLoop]: Abstraction has 4824 states and 19276 transitions. [2023-11-12 00:10:36,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-12 00:10:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 19276 transitions. [2023-11-12 00:10:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:10:36,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:36,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:36,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:10:36,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:36,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2058968035, now seen corresponding path program 1 times [2023-11-12 00:10:36,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:36,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219464933] [2023-11-12 00:10:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:36,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219464933] [2023-11-12 00:10:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219464933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:36,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503669958] [2023-11-12 00:10:36,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:36,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:36,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:36,252 INFO L87 Difference]: Start difference. First operand 4824 states and 19276 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-12 00:10:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:36,372 INFO L93 Difference]: Finished difference Result 2317 states and 8698 transitions. [2023-11-12 00:10:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:36,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-12 00:10:36,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:36,387 INFO L225 Difference]: With dead ends: 2317 [2023-11-12 00:10:36,387 INFO L226 Difference]: Without dead ends: 2317 [2023-11-12 00:10:36,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:36,388 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:36,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 16 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2023-11-12 00:10:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2317. [2023-11-12 00:10:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2262 states have (on average 3.84526967285588) internal successors, (8698), 2316 states have internal predecessors, (8698), 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) [2023-11-12 00:10:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 8698 transitions. [2023-11-12 00:10:36,485 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 8698 transitions. Word has length 17 [2023-11-12 00:10:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:36,487 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 8698 transitions. [2023-11-12 00:10:36,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-12 00:10:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 8698 transitions. [2023-11-12 00:10:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:10:36,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:36,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:36,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:10:36,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:36,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2058968034, now seen corresponding path program 1 times [2023-11-12 00:10:36,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:36,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046913280] [2023-11-12 00:10:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:36,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:36,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:36,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046913280] [2023-11-12 00:10:36,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046913280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:36,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:36,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274131962] [2023-11-12 00:10:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:36,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:36,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:36,572 INFO L87 Difference]: Start difference. First operand 2317 states and 8698 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-12 00:10:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:36,675 INFO L93 Difference]: Finished difference Result 959 states and 3223 transitions. [2023-11-12 00:10:36,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:36,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-12 00:10:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:36,680 INFO L225 Difference]: With dead ends: 959 [2023-11-12 00:10:36,681 INFO L226 Difference]: Without dead ends: 959 [2023-11-12 00:10:36,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:36,682 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:36,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 16 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-11-12 00:10:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2023-11-12 00:10:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 947 states have (on average 3.40337909186906) internal successors, (3223), 958 states have internal predecessors, (3223), 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) [2023-11-12 00:10:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 3223 transitions. [2023-11-12 00:10:36,728 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 3223 transitions. Word has length 17 [2023-11-12 00:10:36,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:36,729 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 3223 transitions. [2023-11-12 00:10:36,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-12 00:10:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 3223 transitions. [2023-11-12 00:10:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:10:36,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:36,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:36,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:10:36,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:36,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash -596277499, now seen corresponding path program 1 times [2023-11-12 00:10:36,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:36,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474760376] [2023-11-12 00:10:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:36,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:36,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474760376] [2023-11-12 00:10:36,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474760376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:36,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:36,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:36,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170816592] [2023-11-12 00:10:36,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:36,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:36,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:36,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:36,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:36,918 INFO L87 Difference]: Start difference. First operand 959 states and 3223 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-12 00:10:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:37,013 INFO L93 Difference]: Finished difference Result 923 states and 3121 transitions. [2023-11-12 00:10:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:37,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-12 00:10:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:37,019 INFO L225 Difference]: With dead ends: 923 [2023-11-12 00:10:37,019 INFO L226 Difference]: Without dead ends: 923 [2023-11-12 00:10:37,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:37,020 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:37,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 14 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-11-12 00:10:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 923. [2023-11-12 00:10:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 913 states have (on average 3.4184008762322016) internal successors, (3121), 922 states have internal predecessors, (3121), 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) [2023-11-12 00:10:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 3121 transitions. [2023-11-12 00:10:37,056 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 3121 transitions. Word has length 18 [2023-11-12 00:10:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:37,056 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 3121 transitions. [2023-11-12 00:10:37,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-12 00:10:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 3121 transitions. [2023-11-12 00:10:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:10:37,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:37,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:37,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:10:37,058 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:37,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash -596277498, now seen corresponding path program 1 times [2023-11-12 00:10:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077201518] [2023-11-12 00:10:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:37,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:37,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077201518] [2023-11-12 00:10:37,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077201518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:37,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:37,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:10:37,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094643854] [2023-11-12 00:10:37,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:37,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:10:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:10:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:37,450 INFO L87 Difference]: Start difference. First operand 923 states and 3121 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-11-12 00:10:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:37,581 INFO L93 Difference]: Finished difference Result 887 states and 3019 transitions. [2023-11-12 00:10:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2023-11-12 00:10:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:37,587 INFO L225 Difference]: With dead ends: 887 [2023-11-12 00:10:37,587 INFO L226 Difference]: Without dead ends: 887 [2023-11-12 00:10:37,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:37,589 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:37,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 12 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:37,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-11-12 00:10:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2023-11-12 00:10:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 879 states have (on average 3.434584755403868) internal successors, (3019), 886 states have internal predecessors, (3019), 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) [2023-11-12 00:10:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 3019 transitions. [2023-11-12 00:10:37,623 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 3019 transitions. Word has length 18 [2023-11-12 00:10:37,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:37,624 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 3019 transitions. [2023-11-12 00:10:37,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-11-12 00:10:37,624 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 3019 transitions. [2023-11-12 00:10:37,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:10:37,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:37,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:37,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:10:37,628 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:37,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:37,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1792011832, now seen corresponding path program 1 times [2023-11-12 00:10:37,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790249074] [2023-11-12 00:10:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:37,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:37,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:37,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790249074] [2023-11-12 00:10:37,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790249074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:37,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:37,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:37,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493569837] [2023-11-12 00:10:37,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:37,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:37,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:37,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:37,857 INFO L87 Difference]: Start difference. First operand 887 states and 3019 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-12 00:10:37,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:37,956 INFO L93 Difference]: Finished difference Result 767 states and 2615 transitions. [2023-11-12 00:10:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:37,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-12 00:10:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:37,962 INFO L225 Difference]: With dead ends: 767 [2023-11-12 00:10:37,963 INFO L226 Difference]: Without dead ends: 767 [2023-11-12 00:10:37,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:37,964 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:37,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 13 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-11-12 00:10:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2023-11-12 00:10:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 763 states have (on average 3.4272608125819133) internal successors, (2615), 766 states have internal predecessors, (2615), 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) [2023-11-12 00:10:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2615 transitions. [2023-11-12 00:10:37,992 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2615 transitions. Word has length 20 [2023-11-12 00:10:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:37,992 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2615 transitions. [2023-11-12 00:10:37,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-12 00:10:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2615 transitions. [2023-11-12 00:10:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 00:10:38,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:38,002 INFO L195 NwaCegarLoop]: 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] [2023-11-12 00:10:38,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 00:10:38,003 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:38,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 627753173, now seen corresponding path program 1 times [2023-11-12 00:10:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787241425] [2023-11-12 00:10:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:39,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787241425] [2023-11-12 00:10:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787241425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:39,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:39,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:10:39,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923779570] [2023-11-12 00:10:39,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:39,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:10:39,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:10:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:10:39,644 INFO L87 Difference]: Start difference. First operand 767 states and 2615 transitions. Second operand has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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) [2023-11-12 00:10:39,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:39,911 INFO L93 Difference]: Finished difference Result 773 states and 2620 transitions. [2023-11-12 00:10:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:10:39,912 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 43 [2023-11-12 00:10:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:39,915 INFO L225 Difference]: With dead ends: 773 [2023-11-12 00:10:39,916 INFO L226 Difference]: Without dead ends: 773 [2023-11-12 00:10:39,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:10:39,917 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:39,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 10 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-11-12 00:10:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 766. [2023-11-12 00:10:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 762 states have (on average 3.4291338582677167) internal successors, (2613), 765 states have internal predecessors, (2613), 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) [2023-11-12 00:10:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 2613 transitions. [2023-11-12 00:10:39,944 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 2613 transitions. Word has length 43 [2023-11-12 00:10:39,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:39,945 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 2613 transitions. [2023-11-12 00:10:39,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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) [2023-11-12 00:10:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 2613 transitions. [2023-11-12 00:10:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-12 00:10:39,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:39,953 INFO L195 NwaCegarLoop]: 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] [2023-11-12 00:10:39,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 00:10:39,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:39,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:39,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2014490818, now seen corresponding path program 1 times [2023-11-12 00:10:39,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:39,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045646468] [2023-11-12 00:10:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:39,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:41,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:41,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045646468] [2023-11-12 00:10:41,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045646468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:41,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:41,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:10:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644031919] [2023-11-12 00:10:41,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:41,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:10:41,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:41,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:10:41,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:10:41,317 INFO L87 Difference]: Start difference. First operand 766 states and 2613 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2023-11-12 00:10:41,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:41,559 INFO L93 Difference]: Finished difference Result 771 states and 2617 transitions. [2023-11-12 00:10:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:10:41,560 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 [2023-11-12 00:10:41,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:41,565 INFO L225 Difference]: With dead ends: 771 [2023-11-12 00:10:41,566 INFO L226 Difference]: Without dead ends: 771 [2023-11-12 00:10:41,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:10:41,568 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 248 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:41,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 10 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:41,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-11-12 00:10:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 765. [2023-11-12 00:10:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 761 states have (on average 3.431011826544021) internal successors, (2611), 764 states have internal predecessors, (2611), 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) [2023-11-12 00:10:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 2611 transitions. [2023-11-12 00:10:41,597 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 2611 transitions. Word has length 44 [2023-11-12 00:10:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:41,597 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 2611 transitions. [2023-11-12 00:10:41,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2023-11-12 00:10:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 2611 transitions. [2023-11-12 00:10:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-12 00:10:41,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:41,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:41,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 00:10:41,603 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:41,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1975292776, now seen corresponding path program 1 times [2023-11-12 00:10:41,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:41,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554100670] [2023-11-12 00:10:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:41,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:42,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554100670] [2023-11-12 00:10:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554100670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:42,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:42,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:10:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532467866] [2023-11-12 00:10:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:42,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:10:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:10:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:10:42,636 INFO L87 Difference]: Start difference. First operand 765 states and 2611 transitions. Second operand has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2023-11-12 00:10:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:42,878 INFO L93 Difference]: Finished difference Result 769 states and 2614 transitions. [2023-11-12 00:10:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:10:42,879 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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 45 [2023-11-12 00:10:42,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:42,883 INFO L225 Difference]: With dead ends: 769 [2023-11-12 00:10:42,883 INFO L226 Difference]: Without dead ends: 769 [2023-11-12 00:10:42,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=191, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:10:42,885 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 161 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:42,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 9 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-11-12 00:10:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 764. [2023-11-12 00:10:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 760 states have (on average 3.432894736842105) internal successors, (2609), 763 states have internal predecessors, (2609), 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) [2023-11-12 00:10:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2609 transitions. [2023-11-12 00:10:42,914 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2609 transitions. Word has length 45 [2023-11-12 00:10:42,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:42,915 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 2609 transitions. [2023-11-12 00:10:42,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2023-11-12 00:10:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2609 transitions. [2023-11-12 00:10:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-12 00:10:42,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:42,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:42,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 00:10:42,920 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:42,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:42,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1104528390, now seen corresponding path program 1 times [2023-11-12 00:10:42,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:42,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282440176] [2023-11-12 00:10:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:42,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:43,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:43,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282440176] [2023-11-12 00:10:43,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282440176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:43,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:43,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:10:43,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63235871] [2023-11-12 00:10:43,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:43,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:10:43,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:10:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:10:43,907 INFO L87 Difference]: Start difference. First operand 764 states and 2609 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 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) [2023-11-12 00:10:44,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:44,174 INFO L93 Difference]: Finished difference Result 767 states and 2611 transitions. [2023-11-12 00:10:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:10:44,175 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 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 46 [2023-11-12 00:10:44,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:44,178 INFO L225 Difference]: With dead ends: 767 [2023-11-12 00:10:44,178 INFO L226 Difference]: Without dead ends: 767 [2023-11-12 00:10:44,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:10:44,179 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 142 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:44,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 9 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-11-12 00:10:44,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 763. [2023-11-12 00:10:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 759 states have (on average 3.4347826086956523) internal successors, (2607), 762 states have internal predecessors, (2607), 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) [2023-11-12 00:10:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 2607 transitions. [2023-11-12 00:10:44,208 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 2607 transitions. Word has length 46 [2023-11-12 00:10:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:44,208 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 2607 transitions. [2023-11-12 00:10:44,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 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) [2023-11-12 00:10:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 2607 transitions. [2023-11-12 00:10:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-12 00:10:44,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:44,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:44,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 00:10:44,213 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:44,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash -119357755, now seen corresponding path program 1 times [2023-11-12 00:10:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:44,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148402657] [2023-11-12 00:10:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:45,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148402657] [2023-11-12 00:10:45,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148402657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:45,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:45,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:10:45,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411125365] [2023-11-12 00:10:45,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:45,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:10:45,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:10:45,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:10:45,256 INFO L87 Difference]: Start difference. First operand 763 states and 2607 transitions. Second operand has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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) [2023-11-12 00:10:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:45,504 INFO L93 Difference]: Finished difference Result 762 states and 2606 transitions. [2023-11-12 00:10:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:10:45,505 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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 47 [2023-11-12 00:10:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:45,508 INFO L225 Difference]: With dead ends: 762 [2023-11-12 00:10:45,508 INFO L226 Difference]: Without dead ends: 762 [2023-11-12 00:10:45,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:10:45,510 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:45,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 9 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-11-12 00:10:45,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2023-11-12 00:10:45,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 759 states have (on average 3.4334650856389985) internal successors, (2606), 761 states have internal predecessors, (2606), 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) [2023-11-12 00:10:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 2606 transitions. [2023-11-12 00:10:45,541 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 2606 transitions. Word has length 47 [2023-11-12 00:10:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:45,542 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 2606 transitions. [2023-11-12 00:10:45,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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) [2023-11-12 00:10:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 2606 transitions. [2023-11-12 00:10:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-12 00:10:45,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:45,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:45,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 00:10:45,547 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:45,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:45,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1760841218, now seen corresponding path program 1 times [2023-11-12 00:10:45,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618344874] [2023-11-12 00:10:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:46,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:46,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618344874] [2023-11-12 00:10:46,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618344874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:46,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:46,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:10:46,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924340378] [2023-11-12 00:10:46,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:46,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 00:10:46,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:46,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 00:10:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:10:46,376 INFO L87 Difference]: Start difference. First operand 762 states and 2606 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 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) [2023-11-12 00:10:46,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:46,598 INFO L93 Difference]: Finished difference Result 761 states and 2605 transitions. [2023-11-12 00:10:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:10:46,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 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 49 [2023-11-12 00:10:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:46,601 INFO L225 Difference]: With dead ends: 761 [2023-11-12 00:10:46,602 INFO L226 Difference]: Without dead ends: 761 [2023-11-12 00:10:46,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:10:46,603 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 132 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:46,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 9 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-11-12 00:10:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2023-11-12 00:10:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 759 states have (on average 3.432147562582345) internal successors, (2605), 760 states have internal predecessors, (2605), 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) [2023-11-12 00:10:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 2605 transitions. [2023-11-12 00:10:46,631 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 2605 transitions. Word has length 49 [2023-11-12 00:10:46,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:46,631 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 2605 transitions. [2023-11-12 00:10:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 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) [2023-11-12 00:10:46,632 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 2605 transitions. [2023-11-12 00:10:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-12 00:10:46,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:46,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:46,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 00:10:46,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:46,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1760841097, now seen corresponding path program 1 times [2023-11-12 00:10:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:46,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689063790] [2023-11-12 00:10:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:46,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:46,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:46,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689063790] [2023-11-12 00:10:46,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689063790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:46,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593298409] [2023-11-12 00:10:46,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:46,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:46,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:46,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:46,842 INFO L87 Difference]: Start difference. First operand 761 states and 2605 transitions. Second operand has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-12 00:10:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:46,972 INFO L93 Difference]: Finished difference Result 1055 states and 3459 transitions. [2023-11-12 00:10:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:46,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2023-11-12 00:10:46,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:46,977 INFO L225 Difference]: With dead ends: 1055 [2023-11-12 00:10:46,978 INFO L226 Difference]: Without dead ends: 1055 [2023-11-12 00:10:46,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:46,979 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:46,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 32 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2023-11-12 00:10:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 798. [2023-11-12 00:10:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 796 states have (on average 3.350502512562814) internal successors, (2667), 797 states have internal predecessors, (2667), 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) [2023-11-12 00:10:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2667 transitions. [2023-11-12 00:10:47,019 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2667 transitions. Word has length 49 [2023-11-12 00:10:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:47,020 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 2667 transitions. [2023-11-12 00:10:47,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-12 00:10:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2667 transitions. [2023-11-12 00:10:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-12 00:10:47,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:47,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 00:10:47,025 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-12 00:10:47,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1760841094, now seen corresponding path program 1 times [2023-11-12 00:10:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:47,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108438764] [2023-11-12 00:10:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:10:47,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:10:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:10:47,315 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:10:47,317 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:10:47,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (72 of 73 remaining) [2023-11-12 00:10:47,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 73 remaining) [2023-11-12 00:10:47,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 73 remaining) [2023-11-12 00:10:47,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 73 remaining) [2023-11-12 00:10:47,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 73 remaining) [2023-11-12 00:10:47,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 73 remaining) [2023-11-12 00:10:47,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 73 remaining) [2023-11-12 00:10:47,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 73 remaining) [2023-11-12 00:10:47,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 73 remaining) [2023-11-12 00:10:47,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 73 remaining) [2023-11-12 00:10:47,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 73 remaining) [2023-11-12 00:10:47,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 73 remaining) [2023-11-12 00:10:47,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 73 remaining) [2023-11-12 00:10:47,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 73 remaining) [2023-11-12 00:10:47,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 73 remaining) [2023-11-12 00:10:47,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 73 remaining) [2023-11-12 00:10:47,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 73 remaining) [2023-11-12 00:10:47,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 73 remaining) [2023-11-12 00:10:47,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 73 remaining) [2023-11-12 00:10:47,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 73 remaining) [2023-11-12 00:10:47,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 73 remaining) [2023-11-12 00:10:47,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (51 of 73 remaining) [2023-11-12 00:10:47,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (50 of 73 remaining) [2023-11-12 00:10:47,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 73 remaining) [2023-11-12 00:10:47,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 73 remaining) [2023-11-12 00:10:47,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (47 of 73 remaining) [2023-11-12 00:10:47,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 73 remaining) [2023-11-12 00:10:47,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 73 remaining) [2023-11-12 00:10:47,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 73 remaining) [2023-11-12 00:10:47,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 73 remaining) [2023-11-12 00:10:47,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 73 remaining) [2023-11-12 00:10:47,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 73 remaining) [2023-11-12 00:10:47,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 73 remaining) [2023-11-12 00:10:47,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 73 remaining) [2023-11-12 00:10:47,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 73 remaining) [2023-11-12 00:10:47,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 73 remaining) [2023-11-12 00:10:47,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 73 remaining) [2023-11-12 00:10:47,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 73 remaining) [2023-11-12 00:10:47,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (34 of 73 remaining) [2023-11-12 00:10:47,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 73 remaining) [2023-11-12 00:10:47,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 73 remaining) [2023-11-12 00:10:47,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 73 remaining) [2023-11-12 00:10:47,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 73 remaining) [2023-11-12 00:10:47,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 73 remaining) [2023-11-12 00:10:47,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 73 remaining) [2023-11-12 00:10:47,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 73 remaining) [2023-11-12 00:10:47,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 73 remaining) [2023-11-12 00:10:47,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 73 remaining) [2023-11-12 00:10:47,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 73 remaining) [2023-11-12 00:10:47,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 73 remaining) [2023-11-12 00:10:47,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 73 remaining) [2023-11-12 00:10:47,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 73 remaining) [2023-11-12 00:10:47,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 73 remaining) [2023-11-12 00:10:47,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 73 remaining) [2023-11-12 00:10:47,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 73 remaining) [2023-11-12 00:10:47,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 73 remaining) [2023-11-12 00:10:47,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 73 remaining) [2023-11-12 00:10:47,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 73 remaining) [2023-11-12 00:10:47,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 73 remaining) [2023-11-12 00:10:47,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 73 remaining) [2023-11-12 00:10:47,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 73 remaining) [2023-11-12 00:10:47,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 73 remaining) [2023-11-12 00:10:47,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 73 remaining) [2023-11-12 00:10:47,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 73 remaining) [2023-11-12 00:10:47,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 73 remaining) [2023-11-12 00:10:47,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 73 remaining) [2023-11-12 00:10:47,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 73 remaining) [2023-11-12 00:10:47,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 73 remaining) [2023-11-12 00:10:47,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 73 remaining) [2023-11-12 00:10:47,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 73 remaining) [2023-11-12 00:10:47,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 73 remaining) [2023-11-12 00:10:47,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 73 remaining) [2023-11-12 00:10:47,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 73 remaining) [2023-11-12 00:10:47,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 00:10:47,347 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:47,354 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 00:10:47,355 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:10:47,472 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre20 could not be translated [2023-11-12 00:10:47,477 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated [2023-11-12 00:10:47,477 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-12 00:10:47,478 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-12 00:10:47,479 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-12 00:10:47,481 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-12 00:10:47,488 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-12 00:10:47,488 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-12 00:10:47,490 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-12 00:10:47,491 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-12 00:10:47,493 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-12 00:10:47,499 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated [2023-11-12 00:10:47,501 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated [2023-11-12 00:10:47,501 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated [2023-11-12 00:10:47,504 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated [2023-11-12 00:10:47,505 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated [2023-11-12 00:10:47,506 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated [2023-11-12 00:10:47,508 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated [2023-11-12 00:10:47,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:10:47 BasicIcfg [2023-11-12 00:10:47,517 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:10:47,518 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:10:47,518 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:10:47,519 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:10:47,519 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:16" (3/4) ... [2023-11-12 00:10:47,521 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:10:47,522 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:10:47,523 INFO L158 Benchmark]: Toolchain (without parser) took 33048.75ms. Allocated memory was 167.8MB in the beginning and 4.8GB in the end (delta: 4.6GB). Free memory was 124.2MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2023-11-12 00:10:47,523 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:10:47,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 851.86ms. Allocated memory is still 167.8MB. Free memory was 124.2MB in the beginning and 90.8MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-12 00:10:47,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.23ms. Allocated memory is still 167.8MB. Free memory was 90.8MB in the beginning and 88.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:10:47,525 INFO L158 Benchmark]: Boogie Preprocessor took 85.11ms. Allocated memory is still 167.8MB. Free memory was 88.3MB in the beginning and 138.0MB in the end (delta: -49.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2023-11-12 00:10:47,525 INFO L158 Benchmark]: RCFGBuilder took 786.17ms. Allocated memory is still 167.8MB. Free memory was 138.0MB in the beginning and 117.3MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 00:10:47,526 INFO L158 Benchmark]: TraceAbstraction took 31229.25ms. Allocated memory was 167.8MB in the beginning and 4.8GB in the end (delta: 4.6GB). Free memory was 116.6MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2023-11-12 00:10:47,526 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 4.8GB. Free memory is still 2.0GB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:10:47,528 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 851.86ms. Allocated memory is still 167.8MB. Free memory was 124.2MB in the beginning and 90.8MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.23ms. Allocated memory is still 167.8MB. Free memory was 90.8MB in the beginning and 88.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.11ms. Allocated memory is still 167.8MB. Free memory was 88.3MB in the beginning and 138.0MB in the end (delta: -49.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * RCFGBuilder took 786.17ms. Allocated memory is still 167.8MB. Free memory was 138.0MB in the beginning and 117.3MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 31229.25ms. Allocated memory was 167.8MB in the beginning and 4.8GB in the end (delta: 4.6GB). Free memory was 116.6MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 4.8GB. Free memory is still 2.0GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre20 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 266 PlacesBefore, 154 PlacesAfterwards, 258 TransitionsBefore, 143 TransitionsAfterwards, 2920 CoEnabledTransitionPairs, 7 FixpointIterations, 111 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 193 TotalNumberOfCompositions, 11061 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5758, independent: 5341, independent conditional: 0, independent unconditional: 5341, dependent: 417, dependent conditional: 0, dependent unconditional: 417, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1464, independent: 1382, independent conditional: 0, independent unconditional: 1382, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1464, independent: 1362, independent conditional: 0, independent unconditional: 1362, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 102, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 342, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5758, independent: 3959, independent conditional: 0, independent unconditional: 3959, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 1464, unknown conditional: 0, unknown unconditional: 1464] , Statistics on independence cache: Total cache size (in pairs): 310, Positive cache size: 274, Positive conditional cache size: 0, Positive unconditional cache size: 274, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1159]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, t={6:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; VAL [arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, v={0:0}] [L1163] 0 \read(t) VAL [arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t={6:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] 1 \read(t1) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1153] 1 \read(t2) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1133] 6 v[0] = 'X' [L1135] 6 return 0; [L1133] 5 v[0] = 'X' [L1135] 5 return 0; [L1133] 3 v[0] = 'X' [L1135] 3 return 0; [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1154] 1 \read(t3) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1140] 4 v[0] = 'Y' [L1142] 4 return 0; [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1155] 1 \read(t4) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1156] 1 \read(t5) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}] [L1164] EXPR 0 v[0] [L1164] EXPR 0 v[0] == 'X' || v[0] == 'Y' [L1164] EXPR 0 v[0] [L1164] EXPR 0 v[0] == 'X' || v[0] == 'Y' [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X' || v[0] == 'Y') [L1123] COND FALSE 0 !(!expression) [L1164] RET 0 __VERIFIER_assert(v[0] == 'X' || v[0] == 'Y') [L1165] 0 return 0; [L1165] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 294 locations, 73 error locations. Started 1 CEGAR loops. OverallTime: 30.8s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1834 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1834 mSDsluCounter, 336 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 135 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2304 IncrementalHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 135 mSolverCounterUnsat, 302 mSDtfsCounter, 2304 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15707occurred in iteration=0, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 20 MinimizatonAttempts, 4224 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 448 ConstructedInterpolants, 0 QuantifiedInterpolants, 7450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 00:10:47,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:10:50,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:10:50,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:10:50,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:10:50,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:10:50,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:10:50,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:10:50,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:10:50,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:10:50,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:10:50,620 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:10:50,621 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:10:50,622 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:10:50,623 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:10:50,624 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:10:50,625 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:10:50,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:10:50,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:10:50,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:10:50,629 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:10:50,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:10:50,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:10:50,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:10:50,631 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:10:50,632 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:10:50,632 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:10:50,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:10:50,633 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:10:50,634 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:10:50,634 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:10:50,636 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:10:50,637 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:10:50,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:10:50,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:10:50,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:10:50,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:10:50,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:50,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:10:50,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:10:50,640 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:10:50,641 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:10:50,641 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:10:50,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:10:50,642 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-12 00:10:51,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:10:51,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:10:51,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:10:51,097 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:10:51,098 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:10:51,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-12 00:10:54,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:10:54,652 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:10:54,653 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-12 00:10:54,687 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/data/4e6c83ecd/37443565a27a4db3ac31cbf819564a39/FLAGbd70e2933 [2023-11-12 00:10:54,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4302f801-9101-4a4a-822a-708633e2b7d3/bin/utaipan-verify-NcY6lQBIFX/data/4e6c83ecd/37443565a27a4db3ac31cbf819564a39 [2023-11-12 00:10:54,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:10:54,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:10:54,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:54,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:10:54,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:10:54,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:54" (1/1) ... [2023-11-12 00:10:54,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5c2704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:54, skipping insertion in model container [2023-11-12 00:10:54,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:54" (1/1) ... [2023-11-12 00:10:54,792 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:10:55,086 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:10:55,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:55,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:10:55,696 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:10:55,739 INFO L209 PostProcessor]: Analyzing one entry point: main