./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/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_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/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_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:02:18,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:02:19,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 01:02:19,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:02:19,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:02:19,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:02:19,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:02:19,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:02:19,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:02:19,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:02:19,053 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:02:19,054 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:02:19,054 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:02:19,057 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:02:19,057 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:02:19,058 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:02:19,059 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:02:19,063 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:02:19,064 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:02:19,064 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:02:19,065 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:02:19,066 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:02:19,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:02:19,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:02:19,068 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:02:19,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:02:19,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:02:19,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:02:19,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:02:19,070 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:02:19,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:02:19,072 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:02:19,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:02:19,072 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:02:19,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:02:19,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:02:19,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:19,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:02:19,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:02:19,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:02:19,074 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:02:19,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:02:19,075 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:02:19,075 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:02:19,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:02:19,076 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_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2023-11-12 01:02:19,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:02:19,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:02:19,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:02:19,362 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:02:19,362 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:02:19,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-12 01:02:22,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:02:22,813 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:02:22,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-12 01:02:22,840 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/data/20e0e9763/1edc248bb16d4c709035b0f1e92de210/FLAG25536d8f9 [2023-11-12 01:02:22,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/data/20e0e9763/1edc248bb16d4c709035b0f1e92de210 [2023-11-12 01:02:22,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:02:22,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:02:22,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:22,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:02:22,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:02:22,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:22" (1/1) ... [2023-11-12 01:02:22,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410b17db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:22, skipping insertion in model container [2023-11-12 01:02:22,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:22" (1/1) ... [2023-11-12 01:02:22,932 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:02:23,354 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_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-11-12 01:02:23,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:23,373 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:02:23,434 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_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-11-12 01:02:23,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:23,490 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:02:23,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23 WrapperNode [2023-11-12 01:02:23,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:23,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:23,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:02:23,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:02:23,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,550 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-12 01:02:23,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:23,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:02:23,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:02:23,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:02:23,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:02:23,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:02:23,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:02:23,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:02:23,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:23,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:23,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:02:23,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:02:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-12 01:02:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-12 01:02:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:02:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:02:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:02:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:02:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:02:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:02:23,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:02:23,684 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 01:02:23,816 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:02:23,817 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:02:23,990 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:02:23,998 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:02:23,998 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 01:02:24,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:24 BoogieIcfgContainer [2023-11-12 01:02:24,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:02:24,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:02:24,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:02:24,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:02:24,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:02:22" (1/3) ... [2023-11-12 01:02:24,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fa0c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:24, skipping insertion in model container [2023-11-12 01:02:24,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23" (2/3) ... [2023-11-12 01:02:24,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fa0c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:24, skipping insertion in model container [2023-11-12 01:02:24,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:24" (3/3) ... [2023-11-12 01:02:24,011 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-11-12 01:02:24,021 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 01:02:24,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:02:24,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:02:24,032 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 01:02:24,118 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 01:02:24,149 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:02:24,163 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 67 transitions, 138 flow [2023-11-12 01:02:24,166 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 67 transitions, 138 flow [2023-11-12 01:02:24,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 67 transitions, 138 flow [2023-11-12 01:02:24,215 INFO L124 PetriNetUnfolderBase]: 10/78 cut-off events. [2023-11-12 01:02:24,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 01:02:24,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 10/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-11-12 01:02:24,223 INFO L119 LiptonReduction]: Number of co-enabled transitions 1204 [2023-11-12 01:02:26,260 INFO L134 LiptonReduction]: Checked pairs total: 964 [2023-11-12 01:02:26,260 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-11-12 01:02:26,270 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 17 transitions, 38 flow [2023-11-12 01:02:26,295 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 36 states have internal predecessors, (83), 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 01:02:26,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:02:26,324 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;@1b33be39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:02:26,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-12 01:02:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 36 states have internal predecessors, (83), 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 01:02:26,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 01:02:26,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:26,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 01:02:26,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:02:26,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash 457241139, now seen corresponding path program 1 times [2023-11-12 01:02:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:26,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939933948] [2023-11-12 01:02:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:26,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 01:02:26,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 01:02:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 01:02:26,550 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 01:02:26,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 01:02:26,554 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-12 01:02:26,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-12 01:02:26,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-12 01:02:26,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:02:26,559 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 01:02:26,568 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 01:02:26,568 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 01:02:26,585 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-12 01:02:26,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 01:02:26 BasicIcfg [2023-11-12 01:02:26,594 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 01:02:26,596 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 01:02:26,596 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 01:02:26,597 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 01:02:26,597 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:24" (3/4) ... [2023-11-12 01:02:26,598 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 01:02:26,610 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-12 01:02:26,656 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06ddcf8f-a0a4-4bb8-b896-567d5b86676d/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 01:02:26,656 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 01:02:26,658 INFO L158 Benchmark]: Toolchain (without parser) took 3787.35ms. Allocated memory is still 157.3MB. Free memory was 123.8MB in the beginning and 61.7MB in the end (delta: 62.0MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2023-11-12 01:02:26,658 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:02:26,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 615.93ms. Allocated memory is still 157.3MB. Free memory was 123.8MB in the beginning and 104.0MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 01:02:26,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.49ms. Allocated memory is still 157.3MB. Free memory was 104.0MB in the beginning and 102.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 01:02:26,660 INFO L158 Benchmark]: Boogie Preprocessor took 42.43ms. Allocated memory is still 157.3MB. Free memory was 102.0MB in the beginning and 100.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 01:02:26,661 INFO L158 Benchmark]: RCFGBuilder took 406.67ms. Allocated memory is still 157.3MB. Free memory was 100.7MB in the beginning and 88.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 01:02:26,661 INFO L158 Benchmark]: TraceAbstraction took 2590.07ms. Allocated memory is still 157.3MB. Free memory was 87.3MB in the beginning and 63.8MB in the end (delta: 23.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-11-12 01:02:26,662 INFO L158 Benchmark]: Witness Printer took 60.46ms. Allocated memory is still 157.3MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 01:02:26,665 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 615.93ms. Allocated memory is still 157.3MB. Free memory was 123.8MB in the beginning and 104.0MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.49ms. Allocated memory is still 157.3MB. Free memory was 104.0MB in the beginning and 102.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.43ms. Allocated memory is still 157.3MB. Free memory was 102.0MB in the beginning and 100.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 406.67ms. Allocated memory is still 157.3MB. Free memory was 100.7MB in the beginning and 88.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2590.07ms. Allocated memory is still 157.3MB. Free memory was 87.3MB in the beginning and 63.8MB in the end (delta: 23.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Witness Printer took 60.46ms. Allocated memory is still 157.3MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 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: 2.1s, 61 PlacesBefore, 15 PlacesAfterwards, 67 TransitionsBefore, 17 TransitionsAfterwards, 1204 CoEnabledTransitionPairs, 5 FixpointIterations, 8 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 57 TotalNumberOfCompositions, 964 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 964, independent: 964, independent conditional: 0, independent unconditional: 964, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 749, independent: 749, independent conditional: 0, independent unconditional: 749, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 749, independent: 749, independent conditional: 0, independent unconditional: 749, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 964, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 749, unknown conditional: 0, unknown unconditional: 749] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i