./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:59:18,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:59:18,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 14:59:18,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:59:18,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:59:18,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:59:18,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:59:18,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:59:18,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:59:18,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:59:18,843 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:59:18,843 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:59:18,844 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:59:18,844 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:59:18,845 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:59:18,845 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:59:18,846 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:59:18,846 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:59:18,847 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:59:18,847 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:59:18,848 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:59:18,851 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:59:18,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:59:18,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:59:18,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:59:18,853 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:59:18,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:59:18,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:59:18,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:59:18,854 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:59:18,855 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:59:18,855 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 14:59:18,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:59:18,856 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:59:18,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:59:18,856 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:59:18,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:59:18,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:59:18,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:59:18,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:59:18,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:59:18,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:59:18,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:59:18,858 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:59:18,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:59:18,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:59:18,858 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:59:18,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:59:18,859 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_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2023-12-02 14:59:19,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:59:19,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:59:19,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:59:19,083 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:59:19,084 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:59:19,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-12-02 14:59:21,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:59:22,033 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:59:22,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-12-02 14:59:22,048 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/data/3a444a2d6/549342a877cb4850a519d3503e214f8e/FLAG57fcc5b00 [2023-12-02 14:59:22,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/data/3a444a2d6/549342a877cb4850a519d3503e214f8e [2023-12-02 14:59:22,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:59:22,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:59:22,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:59:22,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:59:22,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:59:22,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af13ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22, skipping insertion in model container [2023-12-02 14:59:22,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,117 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:59:22,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:59:22,396 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:59:22,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:59:22,466 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:59:22,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22 WrapperNode [2023-12-02 14:59:22,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:59:22,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:59:22,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:59:22,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:59:22,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,505 INFO L138 Inliner]: procedures = 167, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-12-02 14:59:22,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:59:22,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:59:22,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:59:22,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:59:22,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:59:22,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:59:22,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:59:22,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:59:22,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (1/1) ... [2023-12-02 14:59:22,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:59:22,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:59:22,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:59:22,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:59:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-02 14:59:22,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-02 14:59:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:59:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:59:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:59:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:59:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:59:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:59:22,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:59:22,595 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 14:59:22,711 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:59:22,713 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:59:22,865 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:59:22,944 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:59:22,944 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 14:59:22,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:59:22 BoogieIcfgContainer [2023-12-02 14:59:22,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:59:22,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:59:22,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:59:22,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:59:22,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:59:22" (1/3) ... [2023-12-02 14:59:22,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5e4fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:59:22, skipping insertion in model container [2023-12-02 14:59:22,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:22" (2/3) ... [2023-12-02 14:59:22,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5e4fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:59:22, skipping insertion in model container [2023-12-02 14:59:22,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:59:22" (3/3) ... [2023-12-02 14:59:22,954 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-12-02 14:59:22,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:59:22,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 14:59:22,998 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 14:59:23,043 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 14:59:23,067 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 29 transitions, 62 flow [2023-12-02 14:59:23,093 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 135 states, 123 states have (on average 2.4146341463414633) internal successors, (297), 134 states have internal predecessors, (297), 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) [2023-12-02 14:59:23,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:59:23,114 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@342e24f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:59:23,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-02 14:59:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 123 states have (on average 2.4146341463414633) internal successors, (297), 134 states have internal predecessors, (297), 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) [2023-12-02 14:59:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:59:23,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:23,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:59:23,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-02 14:59:23,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 221963, now seen corresponding path program 1 times [2023-12-02 14:59:23,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:23,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711469108] [2023-12-02 14:59:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:23,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711469108] [2023-12-02 14:59:23,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711469108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:23,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:23,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:59:23,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397579851] [2023-12-02 14:59:23,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:23,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:23,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:23,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:23,364 INFO L87 Difference]: Start difference. First operand has 135 states, 123 states have (on average 2.4146341463414633) internal successors, (297), 134 states have internal predecessors, (297), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:23,404 INFO L93 Difference]: Finished difference Result 77 states and 155 transitions. [2023-12-02 14:59:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:23,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:59:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:23,414 INFO L225 Difference]: With dead ends: 77 [2023-12-02 14:59:23,414 INFO L226 Difference]: Without dead ends: 77 [2023-12-02 14:59:23,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:23,420 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:23,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:59:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-02 14:59:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-02 14:59:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 76 states have internal predecessors, (155), 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) [2023-12-02 14:59:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 155 transitions. [2023-12-02 14:59:23,455 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 155 transitions. Word has length 3 [2023-12-02 14:59:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:23,455 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 155 transitions. [2023-12-02 14:59:23,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 155 transitions. [2023-12-02 14:59:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:59:23,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:23,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:59:23,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:59:23,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-02 14:59:23,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:23,458 INFO L85 PathProgramCache]: Analyzing trace with hash 221964, now seen corresponding path program 1 times [2023-12-02 14:59:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:23,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146893008] [2023-12-02 14:59:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:23,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:23,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146893008] [2023-12-02 14:59:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146893008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:23,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:23,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:59:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678686942] [2023-12-02 14:59:23,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:23,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:23,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:23,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:23,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:23,568 INFO L87 Difference]: Start difference. First operand 77 states and 155 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:23,591 INFO L93 Difference]: Finished difference Result 64 states and 127 transitions. [2023-12-02 14:59:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:23,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:59:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:23,593 INFO L225 Difference]: With dead ends: 64 [2023-12-02 14:59:23,593 INFO L226 Difference]: Without dead ends: 64 [2023-12-02 14:59:23,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:23,595 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:23,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:59:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-02 14:59:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-02 14:59:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 2.0483870967741935) internal successors, (127), 63 states have internal predecessors, (127), 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) [2023-12-02 14:59:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 127 transitions. [2023-12-02 14:59:23,605 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 127 transitions. Word has length 3 [2023-12-02 14:59:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:23,605 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 127 transitions. [2023-12-02 14:59:23,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 127 transitions. [2023-12-02 14:59:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 14:59:23,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:23,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-12-02 14:59:23,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:59:23,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-02 14:59:23,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:23,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1757957947, now seen corresponding path program 1 times [2023-12-02 14:59:23,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:23,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682689145] [2023-12-02 14:59:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:23,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:59:23,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:59:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:59:23,660 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 14:59:23,660 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:59:23,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-12-02 14:59:23,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2023-12-02 14:59:23,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-12-02 14:59:23,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-12-02 14:59:23,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-12-02 14:59:23,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-12-02 14:59:23,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:59:23,668 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 14:59:23,670 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 14:59:23,670 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-02 14:59:23,705 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 14:59:23,708 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 48 transitions, 106 flow [2023-12-02 14:59:23,805 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1803 states, 1774 states have (on average 3.6307779030439686) internal successors, (6441), 1802 states have internal predecessors, (6441), 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) [2023-12-02 14:59:23,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:59:23,808 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@342e24f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:59:23,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-02 14:59:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 1803 states, 1774 states have (on average 3.6307779030439686) internal successors, (6441), 1802 states have internal predecessors, (6441), 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) [2023-12-02 14:59:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:59:23,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:23,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:59:23,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-12-02 14:59:23,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash 269627, now seen corresponding path program 1 times [2023-12-02 14:59:23,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:23,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938995767] [2023-12-02 14:59:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:23,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:23,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:23,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938995767] [2023-12-02 14:59:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938995767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:23,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:59:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999982088] [2023-12-02 14:59:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:23,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:23,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:23,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:23,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:23,875 INFO L87 Difference]: Start difference. First operand has 1803 states, 1774 states have (on average 3.6307779030439686) internal successors, (6441), 1802 states have internal predecessors, (6441), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:23,962 INFO L93 Difference]: Finished difference Result 929 states and 3020 transitions. [2023-12-02 14:59:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:23,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:59:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:23,978 INFO L225 Difference]: With dead ends: 929 [2023-12-02 14:59:23,978 INFO L226 Difference]: Without dead ends: 929 [2023-12-02 14:59:23,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:23,980 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:23,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:59:23,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-12-02 14:59:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2023-12-02 14:59:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 918 states have (on average 3.289760348583878) internal successors, (3020), 928 states have internal predecessors, (3020), 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) [2023-12-02 14:59:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3020 transitions. [2023-12-02 14:59:24,051 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3020 transitions. Word has length 3 [2023-12-02 14:59:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:24,051 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 3020 transitions. [2023-12-02 14:59:24,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3020 transitions. [2023-12-02 14:59:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:59:24,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:24,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:59:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:59:24,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-12-02 14:59:24,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 269628, now seen corresponding path program 1 times [2023-12-02 14:59:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461125226] [2023-12-02 14:59:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:24,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461125226] [2023-12-02 14:59:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461125226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:24,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:24,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:59:24,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777134053] [2023-12-02 14:59:24,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:24,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:24,109 INFO L87 Difference]: Start difference. First operand 929 states and 3020 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:24,149 INFO L93 Difference]: Finished difference Result 772 states and 2488 transitions. [2023-12-02 14:59:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:59:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:24,156 INFO L225 Difference]: With dead ends: 772 [2023-12-02 14:59:24,156 INFO L226 Difference]: Without dead ends: 772 [2023-12-02 14:59:24,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:24,157 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:24,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 15 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:59:24,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-12-02 14:59:24,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2023-12-02 14:59:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 768 states have (on average 3.2395833333333335) internal successors, (2488), 771 states have internal predecessors, (2488), 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) [2023-12-02 14:59:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2488 transitions. [2023-12-02 14:59:24,184 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2488 transitions. Word has length 3 [2023-12-02 14:59:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:24,184 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 2488 transitions. [2023-12-02 14:59:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2488 transitions. [2023-12-02 14:59:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 14:59:24,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:24,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:24,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:59:24,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-12-02 14:59:24,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:24,186 INFO L85 PathProgramCache]: Analyzing trace with hash -446580659, now seen corresponding path program 1 times [2023-12-02 14:59:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:24,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003080895] [2023-12-02 14:59:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:24,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:59:24,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:59:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:59:24,244 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 14:59:24,244 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:59:24,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2023-12-02 14:59:24,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2023-12-02 14:59:24,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-12-02 14:59:24,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-12-02 14:59:24,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-12-02 14:59:24,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-12-02 14:59:24,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-12-02 14:59:24,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:59:24,246 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 14:59:24,249 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-12-02 14:59:24,250 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:59:24,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-12-02 14:59:24,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:59:24 BasicIcfg [2023-12-02 14:59:24,269 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:59:24,269 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:59:24,269 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:59:24,269 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:59:24,270 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:59:22" (3/4) ... [2023-12-02 14:59:24,272 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 14:59:24,272 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:59:24,273 INFO L158 Benchmark]: Toolchain (without parser) took 2209.81ms. Allocated memory is still 153.1MB. Free memory was 107.3MB in the beginning and 69.5MB in the end (delta: 37.9MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-12-02 14:59:24,273 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 69.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:59:24,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.75ms. Allocated memory is still 153.1MB. Free memory was 106.9MB in the beginning and 87.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 14:59:24,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.43ms. Allocated memory is still 153.1MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:59:24,274 INFO L158 Benchmark]: Boogie Preprocessor took 25.45ms. Allocated memory is still 153.1MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:59:24,274 INFO L158 Benchmark]: RCFGBuilder took 412.63ms. Allocated memory is still 153.1MB. Free memory was 84.3MB in the beginning and 65.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 14:59:24,275 INFO L158 Benchmark]: TraceAbstraction took 1321.29ms. Allocated memory is still 153.1MB. Free memory was 64.6MB in the beginning and 70.4MB in the end (delta: -5.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:59:24,275 INFO L158 Benchmark]: Witness Printer took 3.29ms. Allocated memory is still 153.1MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:59:24,277 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 69.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.75ms. Allocated memory is still 153.1MB. Free memory was 106.9MB in the beginning and 87.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.43ms. Allocated memory is still 153.1MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.45ms. Allocated memory is still 153.1MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 412.63ms. Allocated memory is still 153.1MB. Free memory was 84.3MB in the beginning and 65.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1321.29ms. Allocated memory is still 153.1MB. Free memory was 64.6MB in the beginning and 70.4MB in the end (delta: -5.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.29ms. Allocated memory is still 153.1MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~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: 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 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible 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 [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 main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2023-12-02 14:59:26,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:59:26,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:59:26,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:59:26,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:59:26,633 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:59:26,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-12-02 14:59:29,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:59:29,604 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:59:29,605 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-12-02 14:59:29,620 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/data/93f4e5801/f6d465b55aa7411b85bd2c04d6caa5b9/FLAG5564f16a6 [2023-12-02 14:59:29,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/data/93f4e5801/f6d465b55aa7411b85bd2c04d6caa5b9 [2023-12-02 14:59:29,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:59:29,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:59:29,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:59:29,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:59:29,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:59:29,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:59:29" (1/1) ... [2023-12-02 14:59:29,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcaa0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:29, skipping insertion in model container [2023-12-02 14:59:29,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:59:29" (1/1) ... [2023-12-02 14:59:29,693 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:59:29,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:59:29,976 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:59:30,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:59:30,088 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:59:30,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30 WrapperNode [2023-12-02 14:59:30,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:59:30,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:59:30,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:59:30,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:59:30,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,136 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-12-02 14:59:30,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:59:30,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:59:30,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:59:30,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:59:30,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:59:30,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:59:30,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:59:30,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:59:30,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (1/1) ... [2023-12-02 14:59:30,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:59:30,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:59:30,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:59:30,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:59:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-02 14:59:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-02 14:59:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:59:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:59:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:59:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 14:59:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 14:59:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:59:30,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:59:30,240 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 14:59:30,384 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:59:30,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:59:30,555 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:59:30,664 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:59:30,664 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 14:59:30,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:59:30 BoogieIcfgContainer [2023-12-02 14:59:30,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:59:30,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:59:30,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:59:30,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:59:30,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:59:29" (1/3) ... [2023-12-02 14:59:30,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6f334b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:59:30, skipping insertion in model container [2023-12-02 14:59:30,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:59:30" (2/3) ... [2023-12-02 14:59:30,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6f334b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:59:30, skipping insertion in model container [2023-12-02 14:59:30,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:59:30" (3/3) ... [2023-12-02 14:59:30,673 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-12-02 14:59:30,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:59:30,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 14:59:30,692 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 14:59:30,734 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 14:59:30,761 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 29 transitions, 62 flow [2023-12-02 14:59:30,786 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 135 states, 123 states have (on average 2.4146341463414633) internal successors, (297), 134 states have internal predecessors, (297), 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) [2023-12-02 14:59:30,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:59:30,811 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71ea217f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:59:30,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-02 14:59:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 123 states have (on average 2.4146341463414633) internal successors, (297), 134 states have internal predecessors, (297), 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) [2023-12-02 14:59:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:59:30,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:30,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:59:30,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-02 14:59:30,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash 223950, now seen corresponding path program 1 times [2023-12-02 14:59:30,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:59:30,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073215022] [2023-12-02 14:59:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:30,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:30,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:59:30,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:59:30,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 14:59:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:30,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:59:30,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:31,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:59:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:31,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:59:31,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:59:31,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073215022] [2023-12-02 14:59:31,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073215022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:31,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:31,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:59:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250908896] [2023-12-02 14:59:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:31,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:59:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:31,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:31,071 INFO L87 Difference]: Start difference. First operand has 135 states, 123 states have (on average 2.4146341463414633) internal successors, (297), 134 states have internal predecessors, (297), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:31,120 INFO L93 Difference]: Finished difference Result 77 states and 155 transitions. [2023-12-02 14:59:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:31,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:59:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:31,130 INFO L225 Difference]: With dead ends: 77 [2023-12-02 14:59:31,130 INFO L226 Difference]: Without dead ends: 77 [2023-12-02 14:59:31,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:31,135 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:31,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:59:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-02 14:59:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-02 14:59:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 76 states have internal predecessors, (155), 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) [2023-12-02 14:59:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 155 transitions. [2023-12-02 14:59:31,179 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 155 transitions. Word has length 3 [2023-12-02 14:59:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:31,179 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 155 transitions. [2023-12-02 14:59:31,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 155 transitions. [2023-12-02 14:59:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:59:31,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:31,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:59:31,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:59:31,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:31,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-02 14:59:31,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash 223949, now seen corresponding path program 1 times [2023-12-02 14:59:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:59:31,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080457428] [2023-12-02 14:59:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:31,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:31,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:59:31,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:59:31,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 14:59:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:31,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:59:31,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:31,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:59:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:31,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:59:31,445 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:59:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080457428] [2023-12-02 14:59:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080457428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:31,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:31,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:59:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379691108] [2023-12-02 14:59:31,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:31,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:59:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:31,448 INFO L87 Difference]: Start difference. First operand 77 states and 155 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:31,484 INFO L93 Difference]: Finished difference Result 64 states and 127 transitions. [2023-12-02 14:59:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:31,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:59:31,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:31,486 INFO L225 Difference]: With dead ends: 64 [2023-12-02 14:59:31,486 INFO L226 Difference]: Without dead ends: 64 [2023-12-02 14:59:31,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:31,488 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:31,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:59:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-02 14:59:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-02 14:59:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 2.0483870967741935) internal successors, (127), 63 states have internal predecessors, (127), 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) [2023-12-02 14:59:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 127 transitions. [2023-12-02 14:59:31,498 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 127 transitions. Word has length 3 [2023-12-02 14:59:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:31,498 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 127 transitions. [2023-12-02 14:59:31,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 127 transitions. [2023-12-02 14:59:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 14:59:31,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:31,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-12-02 14:59:31,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 14:59:31,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:31,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-02 14:59:31,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:31,702 INFO L85 PathProgramCache]: Analyzing trace with hash -733130299, now seen corresponding path program 1 times [2023-12-02 14:59:31,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:59:31,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324177886] [2023-12-02 14:59:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:31,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:59:31,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:59:31,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 14:59:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:59:31,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:59:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:59:31,805 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 14:59:31,805 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:59:31,807 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-12-02 14:59:31,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2023-12-02 14:59:31,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-12-02 14:59:31,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-12-02 14:59:31,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-12-02 14:59:31,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-12-02 14:59:31,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 14:59:32,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:32,019 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 14:59:32,020 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 14:59:32,020 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-02 14:59:32,049 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 14:59:32,051 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 48 transitions, 106 flow [2023-12-02 14:59:32,133 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1803 states, 1774 states have (on average 3.6307779030439686) internal successors, (6441), 1802 states have internal predecessors, (6441), 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) [2023-12-02 14:59:32,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:59:32,135 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71ea217f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:59:32,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-02 14:59:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 1803 states, 1774 states have (on average 3.6307779030439686) internal successors, (6441), 1802 states have internal predecessors, (6441), 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) [2023-12-02 14:59:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:59:32,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:32,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:59:32,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-12-02 14:59:32,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash 271614, now seen corresponding path program 1 times [2023-12-02 14:59:32,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:59:32,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076086043] [2023-12-02 14:59:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:32,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:32,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:59:32,144 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:59:32,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 14:59:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:32,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:59:32,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:32,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:59:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:32,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:59:32,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:59:32,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076086043] [2023-12-02 14:59:32,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076086043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:32,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:32,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:59:32,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540221335] [2023-12-02 14:59:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:32,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:32,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:59:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:32,255 INFO L87 Difference]: Start difference. First operand has 1803 states, 1774 states have (on average 3.6307779030439686) internal successors, (6441), 1802 states have internal predecessors, (6441), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:32,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:32,335 INFO L93 Difference]: Finished difference Result 929 states and 3020 transitions. [2023-12-02 14:59:32,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:32,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:59:32,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:32,351 INFO L225 Difference]: With dead ends: 929 [2023-12-02 14:59:32,352 INFO L226 Difference]: Without dead ends: 929 [2023-12-02 14:59:32,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:32,353 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:32,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:59:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-12-02 14:59:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2023-12-02 14:59:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 918 states have (on average 3.289760348583878) internal successors, (3020), 928 states have internal predecessors, (3020), 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) [2023-12-02 14:59:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3020 transitions. [2023-12-02 14:59:32,429 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3020 transitions. Word has length 3 [2023-12-02 14:59:32,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:32,430 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 3020 transitions. [2023-12-02 14:59:32,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3020 transitions. [2023-12-02 14:59:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:59:32,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:32,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:59:32,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-02 14:59:32,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:32,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-12-02 14:59:32,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash 271613, now seen corresponding path program 1 times [2023-12-02 14:59:32,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:59:32,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369097575] [2023-12-02 14:59:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:32,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:32,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:59:32,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:59:32,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 14:59:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:32,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:59:32,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:32,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:59:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:32,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:59:32,691 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:59:32,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369097575] [2023-12-02 14:59:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369097575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:59:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699554230] [2023-12-02 14:59:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:32,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:59:32,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:59:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:59:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:32,693 INFO L87 Difference]: Start difference. First operand 929 states and 3020 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:32,751 INFO L93 Difference]: Finished difference Result 772 states and 2488 transitions. [2023-12-02 14:59:32,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:59:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:59:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:32,759 INFO L225 Difference]: With dead ends: 772 [2023-12-02 14:59:32,760 INFO L226 Difference]: Without dead ends: 772 [2023-12-02 14:59:32,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:59:32,761 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:32,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 15 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:59:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-12-02 14:59:32,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2023-12-02 14:59:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 768 states have (on average 3.2395833333333335) internal successors, (2488), 771 states have internal predecessors, (2488), 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) [2023-12-02 14:59:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2488 transitions. [2023-12-02 14:59:32,820 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2488 transitions. Word has length 3 [2023-12-02 14:59:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:32,821 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 2488 transitions. [2023-12-02 14:59:32,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2488 transitions. [2023-12-02 14:59:32,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 14:59:32,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:32,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:32,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 14:59:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:33,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-12-02 14:59:33,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash 865278349, now seen corresponding path program 1 times [2023-12-02 14:59:33,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:59:33,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722028612] [2023-12-02 14:59:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:33,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:33,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:59:33,034 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:59:33,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 14:59:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:59:33,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:59:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:59:33,124 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 14:59:33,124 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:59:33,125 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2023-12-02 14:59:33,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2023-12-02 14:59:33,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-12-02 14:59:33,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-12-02 14:59:33,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-12-02 14:59:33,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-12-02 14:59:33,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-12-02 14:59:33,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 14:59:33,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b275c8b-8060-45cf-8c4a-b1f035e44753/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:59:33,327 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 14:59:33,330 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-12-02 14:59:33,330 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:59:33,343 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-12-02 14:59:33,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:59:33 BasicIcfg [2023-12-02 14:59:33,351 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:59:33,352 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:59:33,352 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:59:33,352 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:59:33,353 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:59:30" (3/4) ... [2023-12-02 14:59:33,354 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 14:59:33,355 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:59:33,356 INFO L158 Benchmark]: Toolchain (without parser) took 3717.53ms. Allocated memory was 73.4MB in the beginning and 125.8MB in the end (delta: 52.4MB). Free memory was 48.8MB in the beginning and 81.1MB in the end (delta: -32.4MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2023-12-02 14:59:33,356 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 73.4MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:59:33,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.50ms. Allocated memory was 73.4MB in the beginning and 104.9MB in the end (delta: 31.5MB). Free memory was 48.6MB in the beginning and 76.4MB in the end (delta: -27.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 14:59:33,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.72ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 74.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:59:33,358 INFO L158 Benchmark]: Boogie Preprocessor took 30.74ms. Allocated memory is still 104.9MB. Free memory was 74.4MB in the beginning and 72.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:59:33,358 INFO L158 Benchmark]: RCFGBuilder took 495.75ms. Allocated memory is still 104.9MB. Free memory was 72.7MB in the beginning and 78.3MB in the end (delta: -5.6MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2023-12-02 14:59:33,358 INFO L158 Benchmark]: TraceAbstraction took 2684.64ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 77.8MB in the beginning and 81.1MB in the end (delta: -3.3MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2023-12-02 14:59:33,359 INFO L158 Benchmark]: Witness Printer took 3.43ms. Allocated memory is still 125.8MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:59:33,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 73.4MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.50ms. Allocated memory was 73.4MB in the beginning and 104.9MB in the end (delta: 31.5MB). Free memory was 48.6MB in the beginning and 76.4MB in the end (delta: -27.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.72ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 74.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.74ms. Allocated memory is still 104.9MB. Free memory was 74.4MB in the beginning and 72.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.75ms. Allocated memory is still 104.9MB. Free memory was 72.7MB in the beginning and 78.3MB in the end (delta: -5.6MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2684.64ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 77.8MB in the beginning and 81.1MB in the end (delta: -3.3MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * Witness Printer took 3.43ms. Allocated memory is still 125.8MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~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: 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 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible 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 [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