./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/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_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:43:14,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:43:14,408 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:43:14,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:43:14,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:43:14,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:43:14,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:43:14,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:43:14,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:43:14,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:43:14,444 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:43:14,445 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:43:14,446 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:43:14,446 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:43:14,447 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:43:14,447 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:43:14,448 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:43:14,448 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:43:14,449 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:43:14,450 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:43:14,450 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:43:14,457 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:43:14,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:43:14,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:43:14,459 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:43:14,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:43:14,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:43:14,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:43:14,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:43:14,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:43:14,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:43:14,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:43:14,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:43:14,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:43:14,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:43:14,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:43:14,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:14,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:43:14,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:43:14,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:43:14,466 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:43:14,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:43:14,468 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:43:14,468 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:43:14,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:43:14,468 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_4a6d523d-62fc-411a-a412-4d0cbeab3c78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2023-11-12 00:43:14,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:43:14,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:43:14,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:43:14,772 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:43:14,773 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:43:14,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2023-11-12 00:43:18,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:43:18,337 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:43:18,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2023-11-12 00:43:18,354 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/data/c1acfa072/09a83042749c43bd8a295e446a36cb54/FLAG53e2f0d11 [2023-11-12 00:43:18,369 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/data/c1acfa072/09a83042749c43bd8a295e446a36cb54 [2023-11-12 00:43:18,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:43:18,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:43:18,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:18,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:43:18,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:43:18,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500c018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18, skipping insertion in model container [2023-11-12 00:43:18,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,440 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:43:18,632 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:43:18,775 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2023-11-12 00:43:18,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:18,799 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:43:18,815 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:43:18,848 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2023-11-12 00:43:18,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:18,908 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:18,908 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:18,909 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:18,917 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:43:18,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18 WrapperNode [2023-11-12 00:43:18,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:18,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:18,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:43:18,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:43:18,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,982 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2023-11-12 00:43:18,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:18,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:43:18,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:43:18,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:43:18,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:19,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:19,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:19,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:19,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:19,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:43:19,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:43:19,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:43:19,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:43:19,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:19,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:19,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:19,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:43:19,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:43:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:43:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:43:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:43:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:43:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-12 00:43:19,110 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-12 00:43:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:43:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:43:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:43:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:43:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:43:19,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:43:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-12 00:43:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-12 00:43:19,114 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 00:43:19,254 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:43:19,255 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:43:19,486 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:43:19,543 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:43:19,544 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:43:19,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:19 BoogieIcfgContainer [2023-11-12 00:43:19,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:43:19,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:43:19,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:43:19,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:43:19,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:43:18" (1/3) ... [2023-11-12 00:43:19,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394f6219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:19, skipping insertion in model container [2023-11-12 00:43:19,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18" (2/3) ... [2023-11-12 00:43:19,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394f6219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:19, skipping insertion in model container [2023-11-12 00:43:19,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:19" (3/3) ... [2023-11-12 00:43:19,557 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2023-11-12 00:43:19,567 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:43:19,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:43:19,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:43:19,579 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:43:19,704 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 00:43:19,753 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:43:19,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 110 transitions, 248 flow [2023-11-12 00:43:19,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 110 transitions, 248 flow [2023-11-12 00:43:19,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 110 transitions, 248 flow [2023-11-12 00:43:19,870 INFO L124 PetriNetUnfolderBase]: 2/106 cut-off events. [2023-11-12 00:43:19,870 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 00:43:19,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 106 events. 2/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-11-12 00:43:19,881 INFO L119 LiptonReduction]: Number of co-enabled transitions 2574 [2023-11-12 00:43:23,240 INFO L134 LiptonReduction]: Checked pairs total: 8126 [2023-11-12 00:43:23,240 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-11-12 00:43:23,249 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 43 transitions, 114 flow [2023-11-12 00:43:23,493 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3430 states, 3426 states have (on average 3.636310566258027) internal successors, (12458), 3429 states have internal predecessors, (12458), 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 00:43:23,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:43:23,520 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@79239b14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:43:23,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 00:43:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 3430 states, 3426 states have (on average 3.636310566258027) internal successors, (12458), 3429 states have internal predecessors, (12458), 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 00:43:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:43:23,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:23,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:23,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:23,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:23,550 INFO L85 PathProgramCache]: Analyzing trace with hash -100506217, now seen corresponding path program 1 times [2023-11-12 00:43:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:23,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165770363] [2023-11-12 00:43:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:23,959 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 00:43:23,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165770363] [2023-11-12 00:43:23,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165770363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:23,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:23,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894329111] [2023-11-12 00:43:23,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:23,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:43:23,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:43:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:43:24,010 INFO L87 Difference]: Start difference. First operand has 3430 states, 3426 states have (on average 3.636310566258027) internal successors, (12458), 3429 states have internal predecessors, (12458), 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 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 00:43:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:24,495 INFO L93 Difference]: Finished difference Result 6868 states and 24332 transitions. [2023-11-12 00:43:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:43:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2023-11-12 00:43:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:24,602 INFO L225 Difference]: With dead ends: 6868 [2023-11-12 00:43:24,602 INFO L226 Difference]: Without dead ends: 6196 [2023-11-12 00:43:24,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:43:24,611 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 137 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:24,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 33 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6196 states. [2023-11-12 00:43:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6196 to 4138. [2023-11-12 00:43:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4135 states have (on average 3.6135429262394196) internal successors, (14942), 4137 states have internal predecessors, (14942), 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 00:43:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 14942 transitions. [2023-11-12 00:43:24,930 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 14942 transitions. Word has length 9 [2023-11-12 00:43:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:24,931 INFO L495 AbstractCegarLoop]: Abstraction has 4138 states and 14942 transitions. [2023-11-12 00:43:24,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 00:43:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 14942 transitions. [2023-11-12 00:43:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:43:24,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:24,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:24,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:43:24,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:24,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash -34543147, now seen corresponding path program 1 times [2023-11-12 00:43:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204900482] [2023-11-12 00:43:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:24,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:25,092 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 00:43:25,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:25,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204900482] [2023-11-12 00:43:25,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204900482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:25,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:25,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:43:25,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63163745] [2023-11-12 00:43:25,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:25,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:43:25,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:25,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:43:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:43:25,096 INFO L87 Difference]: Start difference. First operand 4138 states and 14942 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 00:43:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:25,218 INFO L93 Difference]: Finished difference Result 3324 states and 10329 transitions. [2023-11-12 00:43:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:43:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-12 00:43:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:25,250 INFO L225 Difference]: With dead ends: 3324 [2023-11-12 00:43:25,250 INFO L226 Difference]: Without dead ends: 3306 [2023-11-12 00:43:25,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 00:43:25,254 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:25,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2023-11-12 00:43:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 3306. [2023-11-12 00:43:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3306 states, 3303 states have (on average 3.112624886466848) internal successors, (10281), 3305 states have internal predecessors, (10281), 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 00:43:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 10281 transitions. [2023-11-12 00:43:25,395 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 10281 transitions. Word has length 11 [2023-11-12 00:43:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:25,396 INFO L495 AbstractCegarLoop]: Abstraction has 3306 states and 10281 transitions. [2023-11-12 00:43:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 00:43:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 10281 transitions. [2023-11-12 00:43:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:43:25,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:25,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:25,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:43:25,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:25,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2097200021, now seen corresponding path program 2 times [2023-11-12 00:43:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650974769] [2023-11-12 00:43:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:25,529 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 00:43:25,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:25,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650974769] [2023-11-12 00:43:25,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650974769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:25,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:25,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:43:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172486566] [2023-11-12 00:43:25,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:25,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:43:25,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:25,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:43:25,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:43:25,532 INFO L87 Difference]: Start difference. First operand 3306 states and 10281 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 00:43:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:25,656 INFO L93 Difference]: Finished difference Result 1676 states and 3894 transitions. [2023-11-12 00:43:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:43:25,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-12 00:43:25,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:25,669 INFO L225 Difference]: With dead ends: 1676 [2023-11-12 00:43:25,670 INFO L226 Difference]: Without dead ends: 1638 [2023-11-12 00:43:25,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:43:25,674 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:25,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 36 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-11-12 00:43:25,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1454. [2023-11-12 00:43:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1446 states have (on average 2.395573997233748) internal successors, (3464), 1453 states have internal predecessors, (3464), 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 00:43:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 3464 transitions. [2023-11-12 00:43:25,775 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 3464 transitions. Word has length 11 [2023-11-12 00:43:25,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:25,776 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 3464 transitions. [2023-11-12 00:43:25,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 00:43:25,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 3464 transitions. [2023-11-12 00:43:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:25,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:25,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:43:25,780 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:25,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:25,782 INFO L85 PathProgramCache]: Analyzing trace with hash -238884377, now seen corresponding path program 1 times [2023-11-12 00:43:25,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:25,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830465697] [2023-11-12 00:43:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:25,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:25,982 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 00:43:25,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:25,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830465697] [2023-11-12 00:43:25,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830465697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:25,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:25,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:25,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808948084] [2023-11-12 00:43:25,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:25,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:43:25,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:25,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:43:25,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:43:25,985 INFO L87 Difference]: Start difference. First operand 1454 states and 3464 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 00:43:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:26,311 INFO L93 Difference]: Finished difference Result 1846 states and 4250 transitions. [2023-11-12 00:43:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:43:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2023-11-12 00:43:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:26,324 INFO L225 Difference]: With dead ends: 1846 [2023-11-12 00:43:26,325 INFO L226 Difference]: Without dead ends: 1580 [2023-11-12 00:43:26,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:43:26,331 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 112 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:26,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 26 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2023-11-12 00:43:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1332. [2023-11-12 00:43:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1330 states have (on average 2.367669172932331) internal successors, (3149), 1331 states have internal predecessors, (3149), 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 00:43:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 3149 transitions. [2023-11-12 00:43:26,382 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 3149 transitions. Word has length 13 [2023-11-12 00:43:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:26,384 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 3149 transitions. [2023-11-12 00:43:26,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 00:43:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 3149 transitions. [2023-11-12 00:43:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:43:26,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:26,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:26,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:43:26,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:26,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash 460770200, now seen corresponding path program 1 times [2023-11-12 00:43:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400660683] [2023-11-12 00:43:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:26,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:26,521 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 00:43:26,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:26,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400660683] [2023-11-12 00:43:26,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400660683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:26,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:26,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829144111] [2023-11-12 00:43:26,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:26,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:43:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:43:26,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:43:26,525 INFO L87 Difference]: Start difference. First operand 1332 states and 3149 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 00:43:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:26,768 INFO L93 Difference]: Finished difference Result 1562 states and 3588 transitions. [2023-11-12 00:43:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:26,768 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 00:43:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:26,779 INFO L225 Difference]: With dead ends: 1562 [2023-11-12 00:43:26,779 INFO L226 Difference]: Without dead ends: 1508 [2023-11-12 00:43:26,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:43:26,780 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:26,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 22 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:43:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2023-11-12 00:43:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1164. [2023-11-12 00:43:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1162 states have (on average 2.3545611015490535) internal successors, (2736), 1163 states have internal predecessors, (2736), 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 00:43:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 2736 transitions. [2023-11-12 00:43:26,821 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 2736 transitions. Word has length 16 [2023-11-12 00:43:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:26,822 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 2736 transitions. [2023-11-12 00:43:26,822 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 00:43:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 2736 transitions. [2023-11-12 00:43:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:43:26,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:26,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:26,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:43:26,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:26,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:26,835 INFO L85 PathProgramCache]: Analyzing trace with hash 747231655, now seen corresponding path program 1 times [2023-11-12 00:43:26,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:26,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205179572] [2023-11-12 00:43:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:26,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:26,973 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 00:43:26,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:26,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205179572] [2023-11-12 00:43:26,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205179572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:26,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:26,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:26,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108541546] [2023-11-12 00:43:26,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:26,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:43:26,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:43:26,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:43:26,975 INFO L87 Difference]: Start difference. First operand 1164 states and 2736 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 00:43:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:27,236 INFO L93 Difference]: Finished difference Result 1360 states and 3130 transitions. [2023-11-12 00:43:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:43:27,236 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 00:43:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:27,245 INFO L225 Difference]: With dead ends: 1360 [2023-11-12 00:43:27,245 INFO L226 Difference]: Without dead ends: 1238 [2023-11-12 00:43:27,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:43:27,246 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:27,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 23 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:43:27,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2023-11-12 00:43:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 928. [2023-11-12 00:43:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 926 states have (on average 2.3488120950323976) internal successors, (2175), 927 states have internal predecessors, (2175), 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 00:43:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 2175 transitions. [2023-11-12 00:43:27,280 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 2175 transitions. Word has length 16 [2023-11-12 00:43:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:27,280 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 2175 transitions. [2023-11-12 00:43:27,280 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 00:43:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2175 transitions. [2023-11-12 00:43:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:43:27,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:27,283 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] [2023-11-12 00:43:27,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:43:27,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:27,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:27,284 INFO L85 PathProgramCache]: Analyzing trace with hash -789091116, now seen corresponding path program 1 times [2023-11-12 00:43:27,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:27,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751184024] [2023-11-12 00:43:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:27,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:27,402 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 00:43:27,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:27,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751184024] [2023-11-12 00:43:27,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751184024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:27,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:27,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:27,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844291011] [2023-11-12 00:43:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:27,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:27,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:27,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:27,405 INFO L87 Difference]: Start difference. First operand 928 states and 2175 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 00:43:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:27,576 INFO L93 Difference]: Finished difference Result 1056 states and 2447 transitions. [2023-11-12 00:43:27,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:27,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2023-11-12 00:43:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:27,582 INFO L225 Difference]: With dead ends: 1056 [2023-11-12 00:43:27,582 INFO L226 Difference]: Without dead ends: 952 [2023-11-12 00:43:27,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:43:27,583 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 61 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:27,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 82 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-11-12 00:43:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 896. [2023-11-12 00:43:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 894 states have (on average 2.3031319910514543) internal successors, (2059), 895 states have internal predecessors, (2059), 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 00:43:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2059 transitions. [2023-11-12 00:43:27,613 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2059 transitions. Word has length 22 [2023-11-12 00:43:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:27,614 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 2059 transitions. [2023-11-12 00:43:27,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 00:43:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2059 transitions. [2023-11-12 00:43:27,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:43:27,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:27,617 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] [2023-11-12 00:43:27,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:43:27,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:27,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash 491319288, now seen corresponding path program 2 times [2023-11-12 00:43:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:27,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727548597] [2023-11-12 00:43:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:27,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:27,747 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 00:43:27,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:27,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727548597] [2023-11-12 00:43:27,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727548597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:27,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:27,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:27,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652858421] [2023-11-12 00:43:27,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:27,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:27,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:27,749 INFO L87 Difference]: Start difference. First operand 896 states and 2059 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 00:43:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:27,927 INFO L93 Difference]: Finished difference Result 992 states and 2255 transitions. [2023-11-12 00:43:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:27,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2023-11-12 00:43:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:27,931 INFO L225 Difference]: With dead ends: 992 [2023-11-12 00:43:27,931 INFO L226 Difference]: Without dead ends: 932 [2023-11-12 00:43:27,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:43:27,932 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 94 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:27,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 54 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-11-12 00:43:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 876. [2023-11-12 00:43:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 874 states have (on average 2.3043478260869565) internal successors, (2014), 875 states have internal predecessors, (2014), 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 00:43:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2014 transitions. [2023-11-12 00:43:27,959 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2014 transitions. Word has length 22 [2023-11-12 00:43:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:27,960 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 2014 transitions. [2023-11-12 00:43:27,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 00:43:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2014 transitions. [2023-11-12 00:43:27,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:43:27,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:27,962 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] [2023-11-12 00:43:27,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:43:27,963 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 00:43:27,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1145557916, now seen corresponding path program 3 times [2023-11-12 00:43:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:27,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722965410] [2023-11-12 00:43:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:43:27,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:43:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:43:28,025 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:43:28,025 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:43:28,026 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-12 00:43:28,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-12 00:43:28,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-12 00:43:28,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-12 00:43:28,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-12 00:43:28,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-11-12 00:43:28,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-12 00:43:28,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:43:28,032 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2023-11-12 00:43:28,038 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 00:43:28,039 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:43:28,075 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 00:43:28,077 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-12 00:43:28,077 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-12 00:43:28,079 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-12 00:43:28,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:43:28 BasicIcfg [2023-11-12 00:43:28,087 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:43:28,088 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:43:28,088 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:43:28,088 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:43:28,089 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:19" (3/4) ... [2023-11-12 00:43:28,090 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:43:28,108 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-12 00:43:28,109 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-12 00:43:28,109 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-12 00:43:28,111 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-12 00:43:28,152 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:43:28,153 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:43:28,153 INFO L158 Benchmark]: Toolchain (without parser) took 9779.70ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 100.4MB in the beginning and 130.6MB in the end (delta: -30.2MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2023-11-12 00:43:28,154 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 146.8MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:43:28,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.20ms. Allocated memory is still 146.8MB. Free memory was 100.0MB in the beginning and 79.4MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 00:43:28,154 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.46ms. Allocated memory is still 146.8MB. Free memory was 79.4MB in the beginning and 77.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:43:28,155 INFO L158 Benchmark]: Boogie Preprocessor took 47.16ms. Allocated memory is still 146.8MB. Free memory was 77.3MB in the beginning and 75.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:43:28,155 INFO L158 Benchmark]: RCFGBuilder took 515.47ms. Allocated memory is still 146.8MB. Free memory was 75.7MB in the beginning and 58.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:43:28,156 INFO L158 Benchmark]: TraceAbstraction took 8538.32ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 58.5MB in the beginning and 137.9MB in the end (delta: -79.4MB). Peak memory consumption was 100.7kB. Max. memory is 16.1GB. [2023-11-12 00:43:28,156 INFO L158 Benchmark]: Witness Printer took 64.73ms. Allocated memory is still 224.4MB. Free memory was 137.9MB in the beginning and 130.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:43:28,158 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 146.8MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.20ms. Allocated memory is still 146.8MB. Free memory was 100.0MB in the beginning and 79.4MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.46ms. Allocated memory is still 146.8MB. Free memory was 79.4MB in the beginning and 77.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.16ms. Allocated memory is still 146.8MB. Free memory was 77.3MB in the beginning and 75.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.47ms. Allocated memory is still 146.8MB. Free memory was 75.7MB in the beginning and 58.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8538.32ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 58.5MB in the beginning and 137.9MB in the end (delta: -79.4MB). Peak memory consumption was 100.7kB. Max. memory is 16.1GB. * Witness Printer took 64.73ms. Allocated memory is still 224.4MB. Free memory was 137.9MB in the beginning and 130.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 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 The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 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 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: 3.4s, 121 PlacesBefore, 56 PlacesAfterwards, 110 TransitionsBefore, 43 TransitionsAfterwards, 2574 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 8126 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4696, independent: 4480, independent conditional: 0, independent unconditional: 4480, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1944, independent: 1890, independent conditional: 0, independent unconditional: 1890, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1944, independent: 1876, independent conditional: 0, independent unconditional: 1876, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 154, independent: 39, independent conditional: 0, independent unconditional: 39, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4696, independent: 2590, independent conditional: 0, independent unconditional: 2590, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 1944, unknown conditional: 0, unknown unconditional: 1944] , Statistics on independence cache: Total cache size (in pairs): 423, Positive cache size: 390, Positive conditional cache size: 0, Positive unconditional cache size: 390, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, 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 - CounterExampleResult [Line: 738]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, t1={5:0}, t2={7:0}, t3={6:0}, t4={8:0}, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, t1={5:0}, t2={7:0}, t3={6:0}, t4={8:0}, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=0, t1={5:0}, t2={7:0}, t3={6:0}, t4={8:0}, w=0, x=0, y=0] [L724] 2 int l; [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [arg={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, t1={5:0}, t2={7:0}, t3={6:0}, t4={8:0}, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) [L740] 2 l = r-1 VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L724] 4 int l; [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L743] 2 r = l [L745] 2 return 0; [L714] CALL 3 __VERIFIER_atomic_take_write_lock() [L706] CALL 3 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 3 !(!cond) [L706] RET 3 assume_abort_if_not(w==0 && r==0) [L707] 3 w = 1 [L714] RET 3 __VERIFIER_atomic_take_write_lock() [L727] 4 l = x VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L730] 4 y = l VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L733] 4 int ly = y; VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L716] 3 x = 3 VAL [arg={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; [L738] COND TRUE 4 !(ly == lx) [L738] 4 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] - UnprovableResult [Line: 752]: 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: 751]: 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: 750]: 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: 749]: 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 7 procedures, 135 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 8.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 634 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 634 mSDsluCounter, 302 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1585 IncrementalHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 142 mSDtfsCounter, 1585 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4138occurred in iteration=1, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 3256 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-12 00:43:28,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d523d-62fc-411a-a412-4d0cbeab3c78/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE