./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi009_rmo.oepc.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_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/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_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi009_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/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_d03da4ce-8bfb-499b-b4ba-366cb8185186/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 6efd977ba774fd706e089a911dcd82549d76c764859cf8b84047b990ab28d067 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:40,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:40,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:37:40,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:40,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:40,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:40,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:40,991 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:40,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:40,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:40,993 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:40,994 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:40,994 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:40,995 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:40,995 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:40,995 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:40,995 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:40,996 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:40,996 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:40,996 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:40,997 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:41,001 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:41,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:37:41,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:37:41,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:41,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:37:41,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:41,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:37:41,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:41,004 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:37:41,004 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:37:41,004 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:37:41,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:41,005 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:37:41,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:41,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:37:41,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:37:41,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:41,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:41,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:41,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:41,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:41,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:41,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:41,011 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:41,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:41,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:41,012 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:41,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:41,012 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_d03da4ce-8bfb-499b-b4ba-366cb8185186/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efd977ba774fd706e089a911dcd82549d76c764859cf8b84047b990ab28d067 [2024-11-02 12:37:41,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:41,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:41,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:41,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:41,349 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:41,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-wmm/rfi009_rmo.oepc.i Unable to find full path for "g++" [2024-11-02 12:37:43,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:43,824 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:43,824 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/sv-benchmarks/c/pthread-wmm/rfi009_rmo.oepc.i [2024-11-02 12:37:43,845 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/data/7ec03f752/d443683f4bcb45e6911b46ba27b946b0/FLAGf73d057c1 [2024-11-02 12:37:44,029 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/data/7ec03f752/d443683f4bcb45e6911b46ba27b946b0 [2024-11-02 12:37:44,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:44,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:44,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:44,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:44,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:44,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30479cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44, skipping insertion in model container [2024-11-02 12:37:44,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:44,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:44,594 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:44,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:44,723 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:44,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44 WrapperNode [2024-11-02 12:37:44,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:44,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:44,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:44,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:44,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,827 INFO L138 Inliner]: procedures = 175, calls = 62, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-11-02 12:37:44,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:44,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:44,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:44,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:44,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:44,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:44,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:44,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:44,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (1/1) ... [2024-11-02 12:37:44,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:44,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:44,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03da4ce-8bfb-499b-b4ba-366cb8185186/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:37:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:37:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 12:37:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-02 12:37:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-02 12:37:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-02 12:37:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-02 12:37:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-02 12:37:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-02 12:37:45,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:37:45,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 12:37:45,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:45,044 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 12:37:45,245 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:45,249 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:45,907 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:37:45,909 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:46,705 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:46,705 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:37:46,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:46 BoogieIcfgContainer [2024-11-02 12:37:46,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:46,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:46,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:46,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:46,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:44" (1/3) ... [2024-11-02 12:37:46,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d85f3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:46, skipping insertion in model container [2024-11-02 12:37:46,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:44" (2/3) ... [2024-11-02 12:37:46,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d85f3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:46, skipping insertion in model container [2024-11-02 12:37:46,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:46" (3/3) ... [2024-11-02 12:37:46,730 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi009_rmo.oepc.i [2024-11-02 12:37:46,775 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:46,775 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-02 12:37:46,794 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:37:46,960 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-02 12:37:46,994 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 79 transitions, 170 flow [2024-11-02 12:37:51,988 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 96500 states, 85854 states have (on average 4.3309572064202015) internal successors, (371830), 96499 states have internal predecessors, (371830), 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 12:37:52,034 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:52,041 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;@5556885b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:52,041 INFO L334 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-11-02 12:37:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 96500 states, 85854 states have (on average 4.3309572064202015) internal successors, (371830), 96499 states have internal predecessors, (371830), 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 12:37:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:37:52,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:52,494 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:37:52,494 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:37:52,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash 22479624, now seen corresponding path program 1 times [2024-11-02 12:37:52,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:52,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85538529] [2024-11-02 12:37:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:52,960 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 12:37:52,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:52,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85538529] [2024-11-02 12:37:52,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85538529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:52,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:52,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:37:52,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621648811] [2024-11-02 12:37:52,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:52,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:37:52,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:53,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:37:53,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:53,155 INFO L87 Difference]: Start difference. First operand has 96500 states, 85854 states have (on average 4.3309572064202015) internal successors, (371830), 96499 states have internal predecessors, (371830), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:37:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:55,518 INFO L93 Difference]: Finished difference Result 99032 states and 388006 transitions. [2024-11-02 12:37:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:37:55,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:37:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:55,882 INFO L225 Difference]: With dead ends: 99032 [2024-11-02 12:37:55,883 INFO L226 Difference]: Without dead ends: 11766 [2024-11-02 12:37:56,080 INFO L431 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 [2024-11-02 12:37:56,083 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:56,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 15 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:37:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11766 states. [2024-11-02 12:37:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11766 to 11766. [2024-11-02 12:37:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11766 states, 11655 states have (on average 3.6163020163020163) internal successors, (42148), 11765 states have internal predecessors, (42148), 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 12:37:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11766 states to 11766 states and 42148 transitions. [2024-11-02 12:37:57,098 INFO L78 Accepts]: Start accepts. Automaton has 11766 states and 42148 transitions. Word has length 4 [2024-11-02 12:37:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:57,099 INFO L471 AbstractCegarLoop]: Abstraction has 11766 states and 42148 transitions. [2024-11-02 12:37:57,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:37:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 11766 states and 42148 transitions. [2024-11-02 12:37:57,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:37:57,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:57,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:37:57,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:37:57,100 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:37:57,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:57,102 INFO L85 PathProgramCache]: Analyzing trace with hash 22479625, now seen corresponding path program 1 times [2024-11-02 12:37:57,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:57,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640754097] [2024-11-02 12:37:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:57,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:57,299 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 12:37:57,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:57,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640754097] [2024-11-02 12:37:57,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640754097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:57,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:57,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:37:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257599321] [2024-11-02 12:37:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:57,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:37:57,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:57,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:37:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:57,305 INFO L87 Difference]: Start difference. First operand 11766 states and 42148 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:37:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:57,713 INFO L93 Difference]: Finished difference Result 11766 states and 42148 transitions. [2024-11-02 12:37:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:37:57,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:37:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:57,833 INFO L225 Difference]: With dead ends: 11766 [2024-11-02 12:37:57,834 INFO L226 Difference]: Without dead ends: 5168 [2024-11-02 12:37:57,851 INFO L431 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 [2024-11-02 12:37:57,852 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:57,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 16 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:37:57,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2024-11-02 12:37:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 5168. [2024-11-02 12:37:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 5164 states have (on average 3.4794732765298217) internal successors, (17968), 5167 states have internal predecessors, (17968), 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 12:37:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 17968 transitions. [2024-11-02 12:37:58,090 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 17968 transitions. Word has length 4 [2024-11-02 12:37:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:58,091 INFO L471 AbstractCegarLoop]: Abstraction has 5168 states and 17968 transitions. [2024-11-02 12:37:58,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:37:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 17968 transitions. [2024-11-02 12:37:58,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:37:58,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:58,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:58,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:37:58,095 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:37:58,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash -354859787, now seen corresponding path program 1 times [2024-11-02 12:37:58,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:58,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35718881] [2024-11-02 12:37:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:58,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:58,269 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 12:37:58,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:58,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35718881] [2024-11-02 12:37:58,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35718881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:58,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:58,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:37:58,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363869153] [2024-11-02 12:37:58,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:58,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:37:58,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:58,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:37:58,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:58,272 INFO L87 Difference]: Start difference. First operand 5168 states and 17968 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:37:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:58,442 INFO L93 Difference]: Finished difference Result 5648 states and 19172 transitions. [2024-11-02 12:37:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:37:58,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-02 12:37:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:58,775 INFO L225 Difference]: With dead ends: 5648 [2024-11-02 12:37:58,776 INFO L226 Difference]: Without dead ends: 4976 [2024-11-02 12:37:58,788 INFO L431 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 [2024-11-02 12:37:58,800 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:58,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:37:58,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2024-11-02 12:37:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4976. [2024-11-02 12:37:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4976 states, 4972 states have (on average 3.4706355591311344) internal successors, (17256), 4975 states have internal predecessors, (17256), 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 12:37:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 17256 transitions. [2024-11-02 12:37:59,081 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 17256 transitions. Word has length 11 [2024-11-02 12:37:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:59,082 INFO L471 AbstractCegarLoop]: Abstraction has 4976 states and 17256 transitions. [2024-11-02 12:37:59,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:37:59,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 17256 transitions. [2024-11-02 12:37:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:37:59,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:59,087 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:59,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:37:59,091 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:37:59,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2004459710, now seen corresponding path program 1 times [2024-11-02 12:37:59,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:59,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256164201] [2024-11-02 12:37:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:59,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:59,252 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 12:37:59,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256164201] [2024-11-02 12:37:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256164201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:59,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:59,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:37:59,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004440757] [2024-11-02 12:37:59,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:59,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:59,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:59,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:59,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:59,259 INFO L87 Difference]: Start difference. First operand 4976 states and 17256 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 12:37:59,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:59,435 INFO L93 Difference]: Finished difference Result 4976 states and 17256 transitions. [2024-11-02 12:37:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:37:59,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 12:37:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:59,514 INFO L225 Difference]: With dead ends: 4976 [2024-11-02 12:37:59,514 INFO L226 Difference]: Without dead ends: 4736 [2024-11-02 12:37:59,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:59,518 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:59,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 51 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:37:59,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2024-11-02 12:37:59,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4736. [2024-11-02 12:37:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 4733 states have (on average 3.467990703570674) internal successors, (16414), 4735 states have internal predecessors, (16414), 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 12:37:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 16414 transitions. [2024-11-02 12:37:59,904 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 16414 transitions. Word has length 13 [2024-11-02 12:37:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:59,905 INFO L471 AbstractCegarLoop]: Abstraction has 4736 states and 16414 transitions. [2024-11-02 12:37:59,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 12:37:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 16414 transitions. [2024-11-02 12:37:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:37:59,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:59,909 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:59,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:37:59,910 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:37:59,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2004459709, now seen corresponding path program 1 times [2024-11-02 12:37:59,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:59,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706557160] [2024-11-02 12:37:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:59,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:00,347 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 12:38:00,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706557160] [2024-11-02 12:38:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706557160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:00,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:00,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:00,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863624588] [2024-11-02 12:38:00,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:00,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:00,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:00,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:00,350 INFO L87 Difference]: Start difference. First operand 4736 states and 16414 transitions. Second operand has 4 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 12:38:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:00,575 INFO L93 Difference]: Finished difference Result 4736 states and 16414 transitions. [2024-11-02 12:38:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 12:38:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:00,669 INFO L225 Difference]: With dead ends: 4736 [2024-11-02 12:38:00,669 INFO L226 Difference]: Without dead ends: 4496 [2024-11-02 12:38:00,673 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 12:38:00,674 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 57 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:00,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2024-11-02 12:38:00,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4496. [2024-11-02 12:38:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 4494 states have (on average 3.4650645304850913) internal successors, (15572), 4495 states have internal predecessors, (15572), 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 12:38:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 15572 transitions. [2024-11-02 12:38:00,953 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 15572 transitions. Word has length 13 [2024-11-02 12:38:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:00,955 INFO L471 AbstractCegarLoop]: Abstraction has 4496 states and 15572 transitions. [2024-11-02 12:38:00,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 12:38:00,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 15572 transitions. [2024-11-02 12:38:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:38:00,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:00,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:00,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:38:00,961 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:38:00,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1552881155, now seen corresponding path program 1 times [2024-11-02 12:38:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737832773] [2024-11-02 12:38:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:01,046 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 12:38:01,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:01,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737832773] [2024-11-02 12:38:01,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737832773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:01,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:01,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:38:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704788575] [2024-11-02 12:38:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:01,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:01,049 INFO L87 Difference]: Start difference. First operand 4496 states and 15572 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 12:38:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:01,159 INFO L93 Difference]: Finished difference Result 4496 states and 15572 transitions. [2024-11-02 12:38:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:01,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2024-11-02 12:38:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:01,244 INFO L225 Difference]: With dead ends: 4496 [2024-11-02 12:38:01,244 INFO L226 Difference]: Without dead ends: 3488 [2024-11-02 12:38:01,249 INFO L431 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 [2024-11-02 12:38:01,251 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:01,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2024-11-02 12:38:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3488. [2024-11-02 12:38:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 3487 states have (on average 3.4350444508173217) internal successors, (11978), 3487 states have internal predecessors, (11978), 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 12:38:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 11978 transitions. [2024-11-02 12:38:01,457 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 11978 transitions. Word has length 15 [2024-11-02 12:38:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:01,458 INFO L471 AbstractCegarLoop]: Abstraction has 3488 states and 11978 transitions. [2024-11-02 12:38:01,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 12:38:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 11978 transitions. [2024-11-02 12:38:01,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:38:01,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:01,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:01,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:38:01,464 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:38:01,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1552882341, now seen corresponding path program 1 times [2024-11-02 12:38:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:01,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461460614] [2024-11-02 12:38:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:01,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:01,773 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 12:38:01,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461460614] [2024-11-02 12:38:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461460614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:01,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:01,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998254326] [2024-11-02 12:38:01,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:01,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:01,777 INFO L87 Difference]: Start difference. First operand 3488 states and 11978 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 12:38:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:02,223 INFO L93 Difference]: Finished difference Result 4538 states and 15433 transitions. [2024-11-02 12:38:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:38:02,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-11-02 12:38:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:02,301 INFO L225 Difference]: With dead ends: 4538 [2024-11-02 12:38:02,302 INFO L226 Difference]: Without dead ends: 2858 [2024-11-02 12:38:02,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:38:02,310 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 75 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:02,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 102 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2024-11-02 12:38:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2858. [2024-11-02 12:38:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2857 states have (on average 3.3787189359467975) internal successors, (9653), 2857 states have internal predecessors, (9653), 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 12:38:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 9653 transitions. [2024-11-02 12:38:02,641 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 9653 transitions. Word has length 15 [2024-11-02 12:38:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:02,642 INFO L471 AbstractCegarLoop]: Abstraction has 2858 states and 9653 transitions. [2024-11-02 12:38:02,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 12:38:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 9653 transitions. [2024-11-02 12:38:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 12:38:02,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:02,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:02,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:38:02,648 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:38:02,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1514501302, now seen corresponding path program 1 times [2024-11-02 12:38:02,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:02,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496182908] [2024-11-02 12:38:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:02,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:03,060 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 12:38:03,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496182908] [2024-11-02 12:38:03,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496182908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:03,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:03,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:03,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271839089] [2024-11-02 12:38:03,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:03,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:03,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:03,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:03,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:03,063 INFO L87 Difference]: Start difference. First operand 2858 states and 9653 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:03,408 INFO L93 Difference]: Finished difference Result 3608 states and 12078 transitions. [2024-11-02 12:38:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:38:03,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-02 12:38:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:03,475 INFO L225 Difference]: With dead ends: 3608 [2024-11-02 12:38:03,475 INFO L226 Difference]: Without dead ends: 2558 [2024-11-02 12:38:03,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:38:03,479 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 61 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:03,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 93 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2024-11-02 12:38:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2558. [2024-11-02 12:38:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2557 states have (on average 3.348846304262808) internal successors, (8563), 2557 states have internal predecessors, (8563), 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 12:38:03,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 8563 transitions. [2024-11-02 12:38:03,598 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 8563 transitions. Word has length 18 [2024-11-02 12:38:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:03,599 INFO L471 AbstractCegarLoop]: Abstraction has 2558 states and 8563 transitions. [2024-11-02 12:38:03,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 8563 transitions. [2024-11-02 12:38:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:38:03,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:03,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:03,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:38:03,605 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:38:03,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash -659115939, now seen corresponding path program 1 times [2024-11-02 12:38:03,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:03,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2534087] [2024-11-02 12:38:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:05,099 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 12:38:05,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2534087] [2024-11-02 12:38:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2534087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:05,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:05,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:38:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304787446] [2024-11-02 12:38:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:05,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:38:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:05,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:38:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:05,101 INFO L87 Difference]: Start difference. First operand 2558 states and 8563 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:05,608 INFO L93 Difference]: Finished difference Result 3058 states and 10138 transitions. [2024-11-02 12:38:05,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:38:05,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-02 12:38:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:05,652 INFO L225 Difference]: With dead ends: 3058 [2024-11-02 12:38:05,652 INFO L226 Difference]: Without dead ends: 2308 [2024-11-02 12:38:05,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:38:05,655 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:05,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 161 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:38:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2024-11-02 12:38:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2308. [2024-11-02 12:38:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 3.321629822280017) internal successors, (7663), 2307 states have internal predecessors, (7663), 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 12:38:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 7663 transitions. [2024-11-02 12:38:05,765 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 7663 transitions. Word has length 20 [2024-11-02 12:38:05,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:05,765 INFO L471 AbstractCegarLoop]: Abstraction has 2308 states and 7663 transitions. [2024-11-02 12:38:05,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:05,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 7663 transitions. [2024-11-02 12:38:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:38:05,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:05,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:05,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:38:05,771 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:38:05,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 980213632, now seen corresponding path program 1 times [2024-11-02 12:38:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:05,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056368198] [2024-11-02 12:38:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:06,006 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 12:38:06,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056368198] [2024-11-02 12:38:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056368198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:06,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:06,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:06,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547976827] [2024-11-02 12:38:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:06,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:06,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:06,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:06,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:06,008 INFO L87 Difference]: Start difference. First operand 2308 states and 7663 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:06,179 INFO L93 Difference]: Finished difference Result 3366 states and 10916 transitions. [2024-11-02 12:38:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-02 12:38:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:06,243 INFO L225 Difference]: With dead ends: 3366 [2024-11-02 12:38:06,244 INFO L226 Difference]: Without dead ends: 1858 [2024-11-02 12:38:06,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:38:06,251 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:06,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 33 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:06,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2024-11-02 12:38:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1858. [2024-11-02 12:38:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 3.1572428648357564) internal successors, (5863), 1857 states have internal predecessors, (5863), 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 12:38:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 5863 transitions. [2024-11-02 12:38:06,360 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 5863 transitions. Word has length 22 [2024-11-02 12:38:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:06,360 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 5863 transitions. [2024-11-02 12:38:06,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 5863 transitions. [2024-11-02 12:38:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:38:06,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:06,365 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:06,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:38:06,366 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:38:06,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:06,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1924875329, now seen corresponding path program 1 times [2024-11-02 12:38:06,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:06,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024991265] [2024-11-02 12:38:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:06,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:06,743 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 12:38:06,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:06,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024991265] [2024-11-02 12:38:06,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024991265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:06,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:06,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:06,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787530271] [2024-11-02 12:38:06,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:06,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:06,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:06,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:06,745 INFO L87 Difference]: Start difference. First operand 1858 states and 5863 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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 12:38:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:06,951 INFO L93 Difference]: Finished difference Result 2262 states and 6975 transitions. [2024-11-02 12:38:06,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:06,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2024-11-02 12:38:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:06,994 INFO L225 Difference]: With dead ends: 2262 [2024-11-02 12:38:06,994 INFO L226 Difference]: Without dead ends: 1204 [2024-11-02 12:38:06,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:06,997 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 93 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:06,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 43 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2024-11-02 12:38:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1204. [2024-11-02 12:38:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 2.9709060681629262) internal successors, (3574), 1203 states have internal predecessors, (3574), 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 12:38:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 3574 transitions. [2024-11-02 12:38:07,073 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 3574 transitions. Word has length 24 [2024-11-02 12:38:07,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:07,074 INFO L471 AbstractCegarLoop]: Abstraction has 1204 states and 3574 transitions. [2024-11-02 12:38:07,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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 12:38:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 3574 transitions. [2024-11-02 12:38:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 12:38:07,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:07,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:07,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:38:07,078 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:38:07,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:07,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1187398550, now seen corresponding path program 1 times [2024-11-02 12:38:07,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:07,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302820967] [2024-11-02 12:38:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:07,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:07,397 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 12:38:07,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:07,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302820967] [2024-11-02 12:38:07,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302820967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:07,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:07,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:38:07,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417623410] [2024-11-02 12:38:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:07,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:38:07,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:38:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:38:07,400 INFO L87 Difference]: Start difference. First operand 1204 states and 3574 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 12:38:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:07,590 INFO L93 Difference]: Finished difference Result 1268 states and 3726 transitions. [2024-11-02 12:38:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:38:07,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-02 12:38:07,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:07,645 INFO L225 Difference]: With dead ends: 1268 [2024-11-02 12:38:07,645 INFO L226 Difference]: Without dead ends: 864 [2024-11-02 12:38:07,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:38:07,647 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 133 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:07,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 30 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:07,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-11-02 12:38:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2024-11-02 12:38:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.959443800695249) internal successors, (2554), 863 states have internal predecessors, (2554), 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 12:38:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2554 transitions. [2024-11-02 12:38:07,718 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2554 transitions. Word has length 27 [2024-11-02 12:38:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:07,718 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 2554 transitions. [2024-11-02 12:38:07,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 12:38:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2554 transitions. [2024-11-02 12:38:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:38:07,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:07,722 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:07,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:38:07,722 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2024-11-02 12:38:07,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash 641437834, now seen corresponding path program 1 times [2024-11-02 12:38:07,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:07,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298960232] [2024-11-02 12:38:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:07,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:09,216 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 12:38:09,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:09,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298960232] [2024-11-02 12:38:09,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298960232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:09,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:09,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:38:09,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406939501] [2024-11-02 12:38:09,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:09,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:38:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:38:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:38:09,218 INFO L87 Difference]: Start difference. First operand 864 states and 2554 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 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)