./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a 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_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2 --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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:22,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:22,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:27:22,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:22,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:22,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:22,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:22,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:22,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:22,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:22,760 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:22,760 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:22,761 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:22,761 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:22,761 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:22,762 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:22,762 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:22,762 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:22,763 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:22,785 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:22,785 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:22,787 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:22,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:27:22,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:27:22,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:22,789 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:22,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:22,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:22,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:22,790 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:27:22,792 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:27:22,792 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:27:22,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:22,793 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:27:22,793 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:22,793 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:27:22,793 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:22,793 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:22,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:22,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:22,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:22,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:22,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:22,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:22,796 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:22,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:22,797 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:22,797 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:22,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:22,797 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_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2024-11-02 12:27:23,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:23,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:23,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:23,298 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:23,301 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:23,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread/stack_longest-2.i Unable to find full path for "g++" [2024-11-02 12:27:25,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:25,929 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:25,930 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/sv-benchmarks/c/pthread/stack_longest-2.i [2024-11-02 12:27:25,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/data/2c4d6a0e7/7c2b92e7ab7b42aab34dcf6771e639da/FLAGdc5fde727 [2024-11-02 12:27:25,987 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/data/2c4d6a0e7/7c2b92e7ab7b42aab34dcf6771e639da [2024-11-02 12:27:25,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:25,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:26,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:26,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:26,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:26,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:25" (1/1) ... [2024-11-02 12:27:26,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b7d32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:26, skipping insertion in model container [2024-11-02 12:27:26,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:25" (1/1) ... [2024-11-02 12:27:26,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:26,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:27,025 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:27,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:27,215 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:27,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27 WrapperNode [2024-11-02 12:27:27,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:27,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:27,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:27,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:27,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,384 INFO L138 Inliner]: procedures = 277, calls = 831, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 949 [2024-11-02 12:27:27,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:27,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:27,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:27,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:27,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:27,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:27,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:27,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:27,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (1/1) ... [2024-11-02 12:27:27,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:27,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:27,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:27,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784de37c-5764-412a-85dd-0824282444bf/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-02 12:27:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-02 12:27:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-02 12:27:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-02 12:27:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-02 12:27:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:27:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:27:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-02 12:27:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:27,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:27,558 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:27:27,718 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:27,721 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:29,222 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:27:29,222 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:48,013 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:48,014 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:27:48,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:48 BoogieIcfgContainer [2024-11-02 12:27:48,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:48,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:48,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:48,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:48,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:25" (1/3) ... [2024-11-02 12:27:48,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324be15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:48, skipping insertion in model container [2024-11-02 12:27:48,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:27" (2/3) ... [2024-11-02 12:27:48,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324be15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:48, skipping insertion in model container [2024-11-02 12:27:48,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:48" (3/3) ... [2024-11-02 12:27:48,028 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2024-11-02 12:27:48,050 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:48,050 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-02 12:27:48,051 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:27:48,139 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-02 12:27:48,175 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 54 transitions, 122 flow [2024-11-02 12:27:48,286 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 669 states, 653 states have (on average 2.8989280245022973) internal successors, (1893), 668 states have internal predecessors, (1893), 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) [2024-11-02 12:27:48,317 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:48,324 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@59ef5abf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:48,324 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-02 12:27:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 669 states, 653 states have (on average 2.8989280245022973) internal successors, (1893), 668 states have internal predecessors, (1893), 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) [2024-11-02 12:27:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:27:48,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:48,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:48,334 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-02 12:27:48,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:48,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1279678518, now seen corresponding path program 1 times [2024-11-02 12:27:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:48,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414913789] [2024-11-02 12:27:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:48,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:49,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414913789] [2024-11-02 12:27:49,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414913789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:49,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:49,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:27:49,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172776848] [2024-11-02 12:27:49,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:49,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:49,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:49,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:49,417 INFO L87 Difference]: Start difference. First operand has 669 states, 653 states have (on average 2.8989280245022973) internal successors, (1893), 668 states have internal predecessors, (1893), 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 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-02 12:27:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:49,763 INFO L93 Difference]: Finished difference Result 1225 states and 3524 transitions. [2024-11-02 12:27:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-02 12:27:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:49,792 INFO L225 Difference]: With dead ends: 1225 [2024-11-02 12:27:49,793 INFO L226 Difference]: Without dead ends: 562 [2024-11-02 12:27:49,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:49,806 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 64 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:49,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 26 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:27:49,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-02 12:27:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-02 12:27:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 550 states have (on average 2.6763636363636363) internal successors, (1472), 561 states have internal predecessors, (1472), 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) [2024-11-02 12:27:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1472 transitions. [2024-11-02 12:27:49,887 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1472 transitions. Word has length 8 [2024-11-02 12:27:49,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:49,888 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 1472 transitions. [2024-11-02 12:27:49,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-02 12:27:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1472 transitions. [2024-11-02 12:27:49,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:27:49,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:49,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:49,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:49,890 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-02 12:27:49,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1279678519, now seen corresponding path program 1 times [2024-11-02 12:27:49,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:49,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338875430] [2024-11-02 12:27:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:49,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:50,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:50,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338875430] [2024-11-02 12:27:50,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338875430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:50,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:50,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377405073] [2024-11-02 12:27:50,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:50,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:27:50,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:27:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:50,846 INFO L87 Difference]: Start difference. First operand 562 states and 1472 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-02 12:27:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:51,185 INFO L93 Difference]: Finished difference Result 1219 states and 3218 transitions. [2024-11-02 12:27:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:27:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-02 12:27:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:51,195 INFO L225 Difference]: With dead ends: 1219 [2024-11-02 12:27:51,195 INFO L226 Difference]: Without dead ends: 663 [2024-11-02 12:27:51,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:27:51,201 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 41 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:51,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:27:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-02 12:27:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 657. [2024-11-02 12:27:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 645 states have (on average 2.6372093023255814) internal successors, (1701), 656 states have internal predecessors, (1701), 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) [2024-11-02 12:27:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1701 transitions. [2024-11-02 12:27:51,263 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1701 transitions. Word has length 8 [2024-11-02 12:27:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:51,264 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1701 transitions. [2024-11-02 12:27:51,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-02 12:27:51,265 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1701 transitions. [2024-11-02 12:27:51,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:27:51,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:51,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:51,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:27:51,267 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-02 12:27:51,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1742386692, now seen corresponding path program 1 times [2024-11-02 12:27:51,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:51,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623650015] [2024-11-02 12:27:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:51,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:51,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:51,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623650015] [2024-11-02 12:27:51,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623650015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:51,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:51,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:51,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476151211] [2024-11-02 12:27:51,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:51,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:51,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:51,768 INFO L87 Difference]: Start difference. First operand 657 states and 1701 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-02 12:27:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:52,026 INFO L93 Difference]: Finished difference Result 1073 states and 2763 transitions. [2024-11-02 12:27:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:52,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-11-02 12:27:52,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:52,037 INFO L225 Difference]: With dead ends: 1073 [2024-11-02 12:27:52,038 INFO L226 Difference]: Without dead ends: 965 [2024-11-02 12:27:52,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:52,042 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 55 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:52,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 58 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:27:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2024-11-02 12:27:52,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 729. [2024-11-02 12:27:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 717 states have (on average 2.6317991631799162) internal successors, (1887), 728 states have internal predecessors, (1887), 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) [2024-11-02 12:27:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1887 transitions. [2024-11-02 12:27:52,091 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1887 transitions. Word has length 12 [2024-11-02 12:27:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:52,092 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1887 transitions. [2024-11-02 12:27:52,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-02 12:27:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1887 transitions. [2024-11-02 12:27:52,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:27:52,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:52,098 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:52,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:27:52,099 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-02 12:27:52,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1036216451, now seen corresponding path program 1 times [2024-11-02 12:27:52,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:52,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257828671] [2024-11-02 12:27:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:52,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:52,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:52,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257828671] [2024-11-02 12:27:52,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257828671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:52,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:52,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780790891] [2024-11-02 12:27:52,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:52,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:52,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:52,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:52,338 INFO L87 Difference]: Start difference. First operand 729 states and 1887 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:52,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:52,489 INFO L93 Difference]: Finished difference Result 1362 states and 3557 transitions. [2024-11-02 12:27:52,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:52,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-02 12:27:52,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:52,500 INFO L225 Difference]: With dead ends: 1362 [2024-11-02 12:27:52,500 INFO L226 Difference]: Without dead ends: 1314 [2024-11-02 12:27:52,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:52,502 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:52,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 28 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2024-11-02 12:27:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 777. [2024-11-02 12:27:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 765 states have (on average 2.6248366013071895) internal successors, (2008), 776 states have internal predecessors, (2008), 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) [2024-11-02 12:27:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 2008 transitions. [2024-11-02 12:27:52,548 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 2008 transitions. Word has length 13 [2024-11-02 12:27:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:52,549 INFO L471 AbstractCegarLoop]: Abstraction has 777 states and 2008 transitions. [2024-11-02 12:27:52,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 2008 transitions. [2024-11-02 12:27:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:27:52,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:52,551 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:52,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:27:52,552 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-02 12:27:52,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:52,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1192066719, now seen corresponding path program 1 times [2024-11-02 12:27:52,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:52,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500287864] [2024-11-02 12:27:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:53,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:53,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500287864] [2024-11-02 12:27:53,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500287864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020874630] [2024-11-02 12:27:53,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:53,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:53,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:53,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:53,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:53,080 INFO L87 Difference]: Start difference. First operand 777 states and 2008 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:53,222 INFO L93 Difference]: Finished difference Result 1044 states and 2689 transitions. [2024-11-02 12:27:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:53,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-02 12:27:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:53,228 INFO L225 Difference]: With dead ends: 1044 [2024-11-02 12:27:53,229 INFO L226 Difference]: Without dead ends: 471 [2024-11-02 12:27:53,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:53,233 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:53,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 19 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-02 12:27:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2024-11-02 12:27:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 2.4152173913043478) internal successors, (1111), 470 states have internal predecessors, (1111), 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) [2024-11-02 12:27:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1111 transitions. [2024-11-02 12:27:53,256 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1111 transitions. Word has length 17 [2024-11-02 12:27:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:53,257 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 1111 transitions. [2024-11-02 12:27:53,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1111 transitions. [2024-11-02 12:27:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:27:53,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:53,260 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:53,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:27:53,260 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-02 12:27:53,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash 158859779, now seen corresponding path program 1 times [2024-11-02 12:27:53,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:53,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171348878] [2024-11-02 12:27:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:53,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat