./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/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_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/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_2e566d2e-4607-4cdf-b373-cbd89e73de00/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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:51,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:52,065 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:27:52,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:52,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:52,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:52,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:52,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:52,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:52,124 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:52,124 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:52,125 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:52,125 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:52,126 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:52,126 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:52,128 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:52,129 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:52,133 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:52,134 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:52,134 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:52,135 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:52,135 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:52,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:27:52,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:27:52,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:52,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:52,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:52,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:52,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:52,139 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:27:52,140 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:27:52,140 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:27:52,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:52,141 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:27:52,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:52,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:27:52,142 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:52,143 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:52,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:52,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:52,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:52,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:52,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:52,145 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:52,146 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:52,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:52,146 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:52,147 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:52,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:52,147 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_2e566d2e-4607-4cdf-b373-cbd89e73de00/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-02 12:27:52,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:52,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:52,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:52,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:52,532 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:52,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i Unable to find full path for "g++" [2024-11-02 12:27:54,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:55,156 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:55,156 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2024-11-02 12:27:55,189 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/data/04a998cd8/bbaae2491e4c43849a64c4ad9cf459c3/FLAG010368650 [2024-11-02 12:27:55,335 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/data/04a998cd8/bbaae2491e4c43849a64c4ad9cf459c3 [2024-11-02 12:27:55,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:55,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:55,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:55,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:55,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:55,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:55" (1/1) ... [2024-11-02 12:27:55,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43121afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:55, skipping insertion in model container [2024-11-02 12:27:55,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:55" (1/1) ... [2024-11-02 12:27:55,452 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:56,153 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,231 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,245 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,255 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,266 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,319 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,320 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,324 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,324 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:27:56,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:56,345 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:56,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:56,546 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:56,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56 WrapperNode [2024-11-02 12:27:56,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:56,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:56,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:56,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:56,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,661 INFO L138 Inliner]: procedures = 207, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1289 [2024-11-02 12:27:56,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:56,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:56,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:56,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:56,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:56,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:56,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:56,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:56,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (1/1) ... [2024-11-02 12:27:56,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:56,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:56,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e566d2e-4607-4cdf-b373-cbd89e73de00/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-02 12:27:56,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-02 12:27:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:27:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:27:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:27:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:27:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:27:56,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:27:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:27:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:56,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:57,184 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:57,187 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:57,198 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 12:28:00,322 INFO L? ?]: Removed 1022 outVars from TransFormulas that were not future-live. [2024-11-02 12:28:00,323 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:28:02,088 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:28:02,093 INFO L316 CfgBuilder]: Removed 54 assume(true) statements. [2024-11-02 12:28:02,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:02 BoogieIcfgContainer [2024-11-02 12:28:02,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:28:02,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:28:02,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:28:02,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:28:02,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:55" (1/3) ... [2024-11-02 12:28:02,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e595e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:28:02, skipping insertion in model container [2024-11-02 12:28:02,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:56" (2/3) ... [2024-11-02 12:28:02,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e595e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:28:02, skipping insertion in model container [2024-11-02 12:28:02,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:02" (3/3) ... [2024-11-02 12:28:02,107 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test2-1.i [2024-11-02 12:28:02,125 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:28:02,126 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 420 error locations. [2024-11-02 12:28:02,205 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:28:02,212 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;@2a41c5c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:28:02,213 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-02 12:28:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 770 states, 348 states have (on average 2.4885057471264367) internal successors, (866), 765 states have internal predecessors, (866), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:28:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:28:02,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:02,230 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:28:02,230 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-02 12:28:02,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2034951, now seen corresponding path program 1 times [2024-11-02 12:28:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:02,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685669702] [2024-11-02 12:28:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:02,494 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 12:28:02,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685669702] [2024-11-02 12:28:02,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685669702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:02,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:02,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:28:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146056276] [2024-11-02 12:28:02,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:02,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:02,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:02,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:02,543 INFO L87 Difference]: Start difference. First operand has 770 states, 348 states have (on average 2.4885057471264367) internal successors, (866), 765 states have internal predecessors, (866), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:04,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:06,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:08,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:10,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:11,631 INFO L93 Difference]: Finished difference Result 757 states and 805 transitions. [2024-11-02 12:28:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:11,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:28:11,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:11,657 INFO L225 Difference]: With dead ends: 757 [2024-11-02 12:28:11,660 INFO L226 Difference]: Without dead ends: 756 [2024-11-02 12:28:11,661 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 12:28:11,667 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 697 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:11,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 436 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 453 Invalid, 4 Unknown, 0 Unchecked, 9.0s Time] [2024-11-02 12:28:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-02 12:28:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2024-11-02 12:28:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 351 states have (on average 2.2735042735042734) internal successors, (798), 751 states have internal predecessors, (798), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:28:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 804 transitions. [2024-11-02 12:28:11,756 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 804 transitions. Word has length 3 [2024-11-02 12:28:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:11,760 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 804 transitions. [2024-11-02 12:28:11,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 804 transitions. [2024-11-02 12:28:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:28:11,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:11,764 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:28:11,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:28:11,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-02 12:28:11,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2034952, now seen corresponding path program 1 times [2024-11-02 12:28:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569766496] [2024-11-02 12:28:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:11,905 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 12:28:11,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:11,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569766496] [2024-11-02 12:28:11,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569766496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:11,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:11,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:28:11,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965835921] [2024-11-02 12:28:11,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:11,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:11,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:11,910 INFO L87 Difference]: Start difference. First operand 756 states and 804 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:14,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:15,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:17,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:19,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:21,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:24,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:25,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:27,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:29,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:28:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:30,228 INFO L93 Difference]: Finished difference Result 946 states and 1015 transitions. [2024-11-02 12:28:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:30,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:28:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:30,233 INFO L225 Difference]: With dead ends: 946 [2024-11-02 12:28:30,233 INFO L226 Difference]: Without dead ends: 946 [2024-11-02 12:28:30,233 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 12:28:30,234 INFO L432 NwaCegarLoop]: 626 mSDtfsCounter, 211 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 6 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:30,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 995 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 585 Invalid, 7 Unknown, 0 Unchecked, 18.3s Time] [2024-11-02 12:28:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2024-11-02 12:28:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 860. [2024-11-02 12:28:30,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 456 states have (on average 2.206140350877193) internal successors, (1006), 855 states have internal predecessors, (1006), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:28:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1012 transitions. [2024-11-02 12:28:30,267 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1012 transitions. Word has length 3 [2024-11-02 12:28:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:30,267 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1012 transitions. [2024-11-02 12:28:30,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1012 transitions. [2024-11-02 12:28:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:28:30,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:30,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:28:30,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:28:30,269 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-02 12:28:30,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2036946, now seen corresponding path program 1 times [2024-11-02 12:28:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632646428] [2024-11-02 12:28:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:30,351 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 12:28:30,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:30,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632646428] [2024-11-02 12:28:30,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632646428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:30,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:30,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:28:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646199047] [2024-11-02 12:28:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:30,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:28:30,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:28:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:28:30,354 INFO L87 Difference]: Start difference. First operand 860 states and 1012 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)