./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-2.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_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/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_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/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_f36e9109-ec9a-46b0-9a10-f44a692f3493/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 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:40:27,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:40:27,390 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:40:27,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:40:27,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:40:27,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:40:27,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:40:27,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:40:27,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:40:27,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:40:27,452 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:40:27,453 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:40:27,453 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:40:27,455 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:40:27,456 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:40:27,456 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:40:27,456 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:40:27,457 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:40:27,457 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:40:27,458 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:40:27,458 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:40:27,462 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:40:27,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:40:27,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:40:27,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:40:27,465 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:40:27,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:40:27,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:40:27,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:40:27,467 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:40:27,468 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:40:27,468 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:40:27,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:40:27,470 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:40:27,470 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:40:27,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:40:27,470 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:40:27,471 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:40:27,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:40:27,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:40:27,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:40:27,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:40:27,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:40:27,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:40:27,473 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:40:27,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:40:27,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:40:27,474 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:40:27,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:40:27,475 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_f36e9109-ec9a-46b0-9a10-f44a692f3493/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 [2024-11-02 12:40:27,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:40:27,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:40:27,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:40:27,838 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:40:27,839 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:40:27,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i Unable to find full path for "g++" [2024-11-02 12:40:29,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:40:30,231 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:40:30,232 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2024-11-02 12:40:30,250 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/data/b16314ba6/294e25cb35f846788cc739415634d724/FLAGe5fbfd38d [2024-11-02 12:40:30,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/data/b16314ba6/294e25cb35f846788cc739415634d724 [2024-11-02 12:40:30,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:40:30,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:40:30,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:40:30,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:40:30,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:40:30,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:30,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5550c216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30, skipping insertion in model container [2024-11-02 12:40:30,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:30,351 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:40:30,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:40:30,825 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:40:30,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:40:30,913 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:40:30,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30 WrapperNode [2024-11-02 12:40:30,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:40:30,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:40:30,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:40:30,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:40:30,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:30,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:30,982 INFO L138 Inliner]: procedures = 119, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 199 [2024-11-02 12:40:30,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:40:30,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:40:30,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:40:30,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:40:30,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:30,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:30,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:31,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:31,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:31,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:31,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:31,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:31,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:40:31,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:40:31,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:40:31,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:40:31,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (1/1) ... [2024-11-02 12:40:31,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:40:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:40:31,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:40:31,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:40:31,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-02 12:40:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-02 12:40:31,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:40:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:40:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:40:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:40:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:40:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:40:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:40:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:40:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:40:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:40:31,277 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:40:31,279 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:40:32,014 INFO L? ?]: Removed 162 outVars from TransFormulas that were not future-live. [2024-11-02 12:40:32,015 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:40:32,117 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:40:32,119 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-02 12:40:32,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:32 BoogieIcfgContainer [2024-11-02 12:40:32,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:40:32,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:40:32,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:40:32,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:40:32,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:40:30" (1/3) ... [2024-11-02 12:40:32,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be27713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:40:32, skipping insertion in model container [2024-11-02 12:40:32,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:40:30" (2/3) ... [2024-11-02 12:40:32,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be27713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:40:32, skipping insertion in model container [2024-11-02 12:40:32,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:32" (3/3) ... [2024-11-02 12:40:32,134 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2024-11-02 12:40:32,157 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:40:32,158 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2024-11-02 12:40:32,231 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:40:32,244 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;@7c53bf1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:40:32,245 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-02 12:40:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 77 states have (on average 2.4025974025974026) internal successors, (185), 152 states have internal predecessors, (185), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:40:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-11-02 12:40:32,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:32,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-11-02 12:40:32,266 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:32,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash 13219, now seen corresponding path program 1 times [2024-11-02 12:40:32,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069071087] [2024-11-02 12:40:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:32,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:32,555 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 12:40:32,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:32,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069071087] [2024-11-02 12:40:32,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069071087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:32,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:32,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:40:32,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312162532] [2024-11-02 12:40:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:32,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:32,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:32,603 INFO L87 Difference]: Start difference. First operand has 160 states, 77 states have (on average 2.4025974025974026) internal successors, (185), 152 states have internal predecessors, (185), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:40:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:32,835 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2024-11-02 12:40:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:32,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2024-11-02 12:40:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:32,854 INFO L225 Difference]: With dead ends: 149 [2024-11-02 12:40:32,855 INFO L226 Difference]: Without dead ends: 148 [2024-11-02 12:40:32,857 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 12:40:32,864 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 135 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:32,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 91 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:40:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-02 12:40:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-02 12:40:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 70 states have (on average 2.2285714285714286) internal successors, (156), 146 states have internal predecessors, (156), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2024-11-02 12:40:32,922 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 2 [2024-11-02 12:40:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:32,922 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2024-11-02 12:40:32,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:40:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2024-11-02 12:40:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-11-02 12:40:32,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:32,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-11-02 12:40:32,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:40:32,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:32,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:32,928 INFO L85 PathProgramCache]: Analyzing trace with hash 13220, now seen corresponding path program 1 times [2024-11-02 12:40:32,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:32,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259388769] [2024-11-02 12:40:32,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:32,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:33,078 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 12:40:33,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259388769] [2024-11-02 12:40:33,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259388769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:33,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:33,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:40:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752837824] [2024-11-02 12:40:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:33,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:33,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:33,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:33,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:33,083 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:40:33,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:33,353 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2024-11-02 12:40:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:33,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2024-11-02 12:40:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:33,355 INFO L225 Difference]: With dead ends: 145 [2024-11-02 12:40:33,356 INFO L226 Difference]: Without dead ends: 145 [2024-11-02 12:40:33,356 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 12:40:33,358 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 135 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:33,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 90 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:40:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-02 12:40:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-02 12:40:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 70 states have (on average 2.1857142857142855) internal successors, (153), 143 states have internal predecessors, (153), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2024-11-02 12:40:33,377 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 2 [2024-11-02 12:40:33,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:33,377 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2024-11-02 12:40:33,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:40:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2024-11-02 12:40:33,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:40:33,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:33,379 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:33,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:40:33,379 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:33,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:33,380 INFO L85 PathProgramCache]: Analyzing trace with hash 488403782, now seen corresponding path program 1 times [2024-11-02 12:40:33,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:33,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495631012] [2024-11-02 12:40:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:33,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:33,625 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 12:40:33,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:33,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495631012] [2024-11-02 12:40:33,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495631012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:33,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:33,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:33,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849970465] [2024-11-02 12:40:33,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:33,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:40:33,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:33,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:40:33,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:40:33,630 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 12:40:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:33,951 INFO L93 Difference]: Finished difference Result 142 states and 165 transitions. [2024-11-02 12:40:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:40:33,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2024-11-02 12:40:33,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:33,954 INFO L225 Difference]: With dead ends: 142 [2024-11-02 12:40:33,954 INFO L226 Difference]: Without dead ends: 142 [2024-11-02 12:40:33,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:40:33,956 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 207 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:33,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 68 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:40:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-02 12:40:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2024-11-02 12:40:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 83 states have (on average 1.9156626506024097) internal successors, (159), 138 states have internal predecessors, (159), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2024-11-02 12:40:33,974 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 7 [2024-11-02 12:40:33,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:33,974 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2024-11-02 12:40:33,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 12:40:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2024-11-02 12:40:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:40:33,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:33,975 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:33,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:40:33,978 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:33,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:33,979 INFO L85 PathProgramCache]: Analyzing trace with hash 488403783, now seen corresponding path program 1 times [2024-11-02 12:40:33,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:33,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607711157] [2024-11-02 12:40:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:33,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:34,280 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 12:40:34,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:34,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607711157] [2024-11-02 12:40:34,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607711157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:34,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:34,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:40:34,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768712994] [2024-11-02 12:40:34,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:34,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:40:34,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:40:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:40:34,285 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 12:40:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:34,816 INFO L93 Difference]: Finished difference Result 201 states and 234 transitions. [2024-11-02 12:40:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:40:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2024-11-02 12:40:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:34,822 INFO L225 Difference]: With dead ends: 201 [2024-11-02 12:40:34,823 INFO L226 Difference]: Without dead ends: 201 [2024-11-02 12:40:34,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:40:34,829 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 251 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:34,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 133 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:40:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-02 12:40:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 182. [2024-11-02 12:40:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 125 states have (on average 1.784) internal successors, (223), 180 states have internal predecessors, (223), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 229 transitions. [2024-11-02 12:40:34,846 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 229 transitions. Word has length 7 [2024-11-02 12:40:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:34,846 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 229 transitions. [2024-11-02 12:40:34,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 12:40:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 229 transitions. [2024-11-02 12:40:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:40:34,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:34,868 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:34,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:40:34,868 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:34,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1204949237, now seen corresponding path program 1 times [2024-11-02 12:40:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:34,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260199090] [2024-11-02 12:40:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:34,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:35,004 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 12:40:35,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:35,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260199090] [2024-11-02 12:40:35,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260199090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:35,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:35,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:40:35,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022143447] [2024-11-02 12:40:35,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:35,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:40:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:40:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:40:35,007 INFO L87 Difference]: Start difference. First operand 182 states and 229 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 12:40:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:35,256 INFO L93 Difference]: Finished difference Result 181 states and 227 transitions. [2024-11-02 12:40:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:40:35,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2024-11-02 12:40:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:35,258 INFO L225 Difference]: With dead ends: 181 [2024-11-02 12:40:35,258 INFO L226 Difference]: Without dead ends: 181 [2024-11-02 12:40:35,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:40:35,260 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 3 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:35,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 327 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:40:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-02 12:40:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-02 12:40:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 125 states have (on average 1.768) internal successors, (221), 179 states have internal predecessors, (221), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 227 transitions. [2024-11-02 12:40:35,279 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 227 transitions. Word has length 9 [2024-11-02 12:40:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:35,279 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 227 transitions. [2024-11-02 12:40:35,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 12:40:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 227 transitions. [2024-11-02 12:40:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:40:35,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:35,285 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:35,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:40:35,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:35,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1204949238, now seen corresponding path program 1 times [2024-11-02 12:40:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:35,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089419107] [2024-11-02 12:40:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:35,516 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 12:40:35,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:35,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089419107] [2024-11-02 12:40:35,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089419107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:35,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:40:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052771455] [2024-11-02 12:40:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:35,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:40:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:40:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:40:35,521 INFO L87 Difference]: Start difference. First operand 181 states and 227 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 12:40:35,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:35,823 INFO L93 Difference]: Finished difference Result 180 states and 225 transitions. [2024-11-02 12:40:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:40:35,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2024-11-02 12:40:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:35,825 INFO L225 Difference]: With dead ends: 180 [2024-11-02 12:40:35,826 INFO L226 Difference]: Without dead ends: 180 [2024-11-02 12:40:35,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:40:35,830 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 2 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:35,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 305 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:40:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-02 12:40:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-02 12:40:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 125 states have (on average 1.752) internal successors, (219), 178 states have internal predecessors, (219), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:35,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2024-11-02 12:40:35,845 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 9 [2024-11-02 12:40:35,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:35,846 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2024-11-02 12:40:35,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 12:40:35,846 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2024-11-02 12:40:35,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:40:35,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:35,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:35,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:40:35,847 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:35,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2039868593, now seen corresponding path program 1 times [2024-11-02 12:40:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393713754] [2024-11-02 12:40:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:35,890 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 12:40:35,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393713754] [2024-11-02 12:40:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393713754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:35,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:35,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:35,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277563297] [2024-11-02 12:40:35,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:35,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:35,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:35,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:35,893 INFO L87 Difference]: Start difference. First operand 180 states and 225 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:35,984 INFO L93 Difference]: Finished difference Result 213 states and 261 transitions. [2024-11-02 12:40:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:35,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 12:40:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:35,986 INFO L225 Difference]: With dead ends: 213 [2024-11-02 12:40:35,987 INFO L226 Difference]: Without dead ends: 213 [2024-11-02 12:40:35,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:35,988 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 41 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:35,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 237 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:40:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-02 12:40:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 182. [2024-11-02 12:40:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 127 states have (on average 1.7322834645669292) internal successors, (220), 180 states have internal predecessors, (220), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 226 transitions. [2024-11-02 12:40:36,004 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 226 transitions. Word has length 11 [2024-11-02 12:40:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:36,004 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 226 transitions. [2024-11-02 12:40:36,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 226 transitions. [2024-11-02 12:40:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:40:36,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:36,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:36,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:40:36,006 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:36,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1684616548, now seen corresponding path program 1 times [2024-11-02 12:40:36,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164508535] [2024-11-02 12:40:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:36,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:36,312 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 12:40:36,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:36,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164508535] [2024-11-02 12:40:36,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164508535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:36,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:36,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:40:36,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777504229] [2024-11-02 12:40:36,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:36,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:40:36,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:36,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:40:36,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:40:36,317 INFO L87 Difference]: Start difference. First operand 182 states and 226 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 12:40:36,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:36,885 INFO L93 Difference]: Finished difference Result 182 states and 225 transitions. [2024-11-02 12:40:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:40:36,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 12:40:36,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:36,887 INFO L225 Difference]: With dead ends: 182 [2024-11-02 12:40:36,887 INFO L226 Difference]: Without dead ends: 182 [2024-11-02 12:40:36,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:40:36,888 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 199 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:36,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 243 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:40:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-02 12:40:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2024-11-02 12:40:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 127 states have (on average 1.7244094488188977) internal successors, (219), 179 states have internal predecessors, (219), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 225 transitions. [2024-11-02 12:40:36,894 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 225 transitions. Word has length 11 [2024-11-02 12:40:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:36,894 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 225 transitions. [2024-11-02 12:40:36,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 12:40:36,894 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 225 transitions. [2024-11-02 12:40:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:40:36,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:36,895 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:36,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:40:36,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:36,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1684616547, now seen corresponding path program 1 times [2024-11-02 12:40:36,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:36,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699053732] [2024-11-02 12:40:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:36,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:37,314 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 12:40:37,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699053732] [2024-11-02 12:40:37,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699053732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:37,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:37,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:40:37,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146874125] [2024-11-02 12:40:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:37,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:40:37,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:40:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:40:37,317 INFO L87 Difference]: Start difference. First operand 181 states and 225 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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 12:40:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:37,943 INFO L93 Difference]: Finished difference Result 176 states and 219 transitions. [2024-11-02 12:40:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-02 12:40:37,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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 12:40:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:37,944 INFO L225 Difference]: With dead ends: 176 [2024-11-02 12:40:37,945 INFO L226 Difference]: Without dead ends: 176 [2024-11-02 12:40:37,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:40:37,946 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 202 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:37,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 206 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:40:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-02 12:40:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 169. [2024-11-02 12:40:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 121 states have (on average 1.7107438016528926) internal successors, (207), 167 states have internal predecessors, (207), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 213 transitions. [2024-11-02 12:40:37,952 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 213 transitions. Word has length 11 [2024-11-02 12:40:37,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:37,952 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 213 transitions. [2024-11-02 12:40:37,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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 12:40:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 213 transitions. [2024-11-02 12:40:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:40:37,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:37,953 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:37,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:40:37,953 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:37,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1395079164, now seen corresponding path program 1 times [2024-11-02 12:40:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328977649] [2024-11-02 12:40:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:37,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:40:38,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328977649] [2024-11-02 12:40:38,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328977649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:38,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:38,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:38,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973986795] [2024-11-02 12:40:38,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:38,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:40:38,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:38,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:40:38,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:40:38,033 INFO L87 Difference]: Start difference. First operand 169 states and 213 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:38,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:38,227 INFO L93 Difference]: Finished difference Result 191 states and 219 transitions. [2024-11-02 12:40:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:40:38,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 12:40:38,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:38,229 INFO L225 Difference]: With dead ends: 191 [2024-11-02 12:40:38,229 INFO L226 Difference]: Without dead ends: 191 [2024-11-02 12:40:38,229 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 12:40:38,230 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 227 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:38,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 158 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:40:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-02 12:40:38,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 168. [2024-11-02 12:40:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 121 states have (on average 1.6859504132231404) internal successors, (204), 166 states have internal predecessors, (204), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 209 transitions. [2024-11-02 12:40:38,237 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 209 transitions. Word has length 20 [2024-11-02 12:40:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:38,238 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 209 transitions. [2024-11-02 12:40:38,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:40:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 209 transitions. [2024-11-02 12:40:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:40:38,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:38,241 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:38,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:40:38,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-02 12:40:38,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1544306206, now seen corresponding path program 1 times [2024-11-02 12:40:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:38,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479046901] [2024-11-02 12:40:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:38,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:40:38,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479046901] [2024-11-02 12:40:38,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479046901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:40:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647360179] [2024-11-02 12:40:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:38,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:40:38,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:40:38,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:40:38,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f36e9109-ec9a-46b0-9a10-f44a692f3493/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:40:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:39,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-02 12:40:39,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:39,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-02 12:40:39,214 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-02 12:40:39,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-02 12:40:39,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 12:40:39,358 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-02 12:40:39,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-02 12:40:39,438 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-02 12:40:39,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-02 12:40:39,509 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-02 12:40:39,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-02 12:40:39,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-02 12:40:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:40:39,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:40:39,995 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2024-11-02 12:40:39,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-02 12:40:40,181 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_131| Int) (v_ArrVal_334 (Array Int Int))) (or (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_334))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_336) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_131|)))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_131|) (< |v_ULTIMATE.start_main_~x~0#1.offset_131| 0))) is different from false [2024-11-02 12:40:40,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:40:40,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2024-11-02 12:40:40,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:40:40,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 189 [2024-11-02 12:40:40,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 102 [2024-11-02 12:40:40,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:40:40,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 92 [2024-11-02 12:40:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:40:40,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647360179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:40:40,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [714576964] [2024-11-02 12:40:40,884 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-02 12:40:40,885 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:40:40,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:40:40,894 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:40:40,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:40:47,567 INFO L180 IcfgInterpreter]: Interpretation finished