./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_rmo.opt.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_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/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_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/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_1def5105-a834-4276-b4d9-f1e8e79ee6e6/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 9047d35108a9c07c04b519cba211a741bb80887623b2a85c45105c17ca835121 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:38:09,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:38:10,071 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:38:10,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:38:10,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:38:10,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:38:10,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:38:10,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:38:10,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:38:10,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:38:10,123 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:38:10,124 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:38:10,124 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:38:10,124 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:38:10,125 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:38:10,125 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:38:10,125 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:38:10,126 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:38:10,126 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:38:10,128 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:38:10,129 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:38:10,129 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:38:10,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:38:10,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:38:10,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:38:10,134 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:38:10,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:38:10,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:38:10,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:38:10,135 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:38:10,136 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:38:10,136 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:38:10,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:38:10,137 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:38:10,138 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:38:10,138 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:38:10,139 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:38:10,139 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:38:10,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:38:10,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:38:10,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:38:10,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:10,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:38:10,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:38:10,142 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:38:10,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:38:10,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:38:10,143 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:38:10,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:38:10,144 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_1def5105-a834-4276-b4d9-f1e8e79ee6e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9047d35108a9c07c04b519cba211a741bb80887623b2a85c45105c17ca835121 [2024-11-02 12:38:10,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:38:10,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:38:10,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:38:10,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:38:10,527 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:38:10,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-wmm/safe009_rmo.opt.i Unable to find full path for "g++" [2024-11-02 12:38:12,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:38:13,202 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:38:13,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/sv-benchmarks/c/pthread-wmm/safe009_rmo.opt.i [2024-11-02 12:38:13,219 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/data/102f983d7/4c1558002ad34ad3b05eafb4576e4b25/FLAG2bfc3c4d0 [2024-11-02 12:38:13,234 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/data/102f983d7/4c1558002ad34ad3b05eafb4576e4b25 [2024-11-02 12:38:13,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:38:13,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:38:13,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:13,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:38:13,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:38:13,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:13" (1/1) ... [2024-11-02 12:38:13,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7262e7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:13, skipping insertion in model container [2024-11-02 12:38:13,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:13" (1/1) ... [2024-11-02 12:38:13,308 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:38:13,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:13,858 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:38:13,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:14,043 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:38:14,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14 WrapperNode [2024-11-02 12:38:14,044 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:14,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:14,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:38:14,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:38:14,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,125 INFO L138 Inliner]: procedures = 175, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 126 [2024-11-02 12:38:14,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:14,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:38:14,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:38:14,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:38:14,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:38:14,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:38:14,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:38:14,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:38:14,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (1/1) ... [2024-11-02 12:38:14,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:14,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:14,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:38:14,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1def5105-a834-4276-b4d9-f1e8e79ee6e6/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:38:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:38:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:38:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 12:38:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:38:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-02 12:38:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-02 12:38:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-02 12:38:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-02 12:38:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-02 12:38:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-02 12:38:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:38:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 12:38:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:38:14,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:38:14,292 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:38:14,462 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:38:14,465 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:38:15,182 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:38:15,184 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:38:15,892 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:38:15,893 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:38:15,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:15 BoogieIcfgContainer [2024-11-02 12:38:15,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:38:15,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:38:15,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:38:15,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:38:15,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:38:13" (1/3) ... [2024-11-02 12:38:15,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d0dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:15, skipping insertion in model container [2024-11-02 12:38:15,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:14" (2/3) ... [2024-11-02 12:38:15,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d0dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:15, skipping insertion in model container [2024-11-02 12:38:15,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:15" (3/3) ... [2024-11-02 12:38:15,906 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_rmo.opt.i [2024-11-02 12:38:15,932 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:38:15,932 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-11-02 12:38:15,932 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:38:16,161 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-02 12:38:16,204 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 160 flow [2024-11-02 12:38:20,134 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 63389 states, 58035 states have (on average 4.169501163091238) internal successors, (241977), 63388 states have internal predecessors, (241977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:20,298 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:38:20,313 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;@6d5d5dce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:38:20,313 INFO L334 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2024-11-02 12:38:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 63389 states, 58035 states have (on average 4.169501163091238) internal successors, (241977), 63388 states have internal predecessors, (241977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:38:20,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:20,499 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:38:20,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:20,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash 670553712, now seen corresponding path program 1 times [2024-11-02 12:38:20,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:20,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932814863] [2024-11-02 12:38:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:20,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:20,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:20,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932814863] [2024-11-02 12:38:20,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932814863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:20,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:20,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:38:20,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197742839] [2024-11-02 12:38:20,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:21,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:21,146 INFO L87 Difference]: Start difference. First operand has 63389 states, 58035 states have (on average 4.169501163091238) internal successors, (241977), 63388 states have internal predecessors, (241977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:24,019 INFO L93 Difference]: Finished difference Result 66562 states and 258749 transitions. [2024-11-02 12:38:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2024-11-02 12:38:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:24,416 INFO L225 Difference]: With dead ends: 66562 [2024-11-02 12:38:24,416 INFO L226 Difference]: Without dead ends: 14595 [2024-11-02 12:38:24,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:24,536 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:24,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 13 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14595 states. [2024-11-02 12:38:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14595 to 14595. [2024-11-02 12:38:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14595 states, 14260 states have (on average 3.6894810659186534) internal successors, (52612), 14594 states have internal predecessors, (52612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14595 states to 14595 states and 52612 transitions. [2024-11-02 12:38:25,941 INFO L78 Accepts]: Start accepts. Automaton has 14595 states and 52612 transitions. Word has length 5 [2024-11-02 12:38:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:25,942 INFO L471 AbstractCegarLoop]: Abstraction has 14595 states and 52612 transitions. [2024-11-02 12:38:25,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 14595 states and 52612 transitions. [2024-11-02 12:38:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:38:25,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:25,944 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:38:25,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:38:25,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:25,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash 670553713, now seen corresponding path program 1 times [2024-11-02 12:38:25,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:25,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129513909] [2024-11-02 12:38:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:26,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129513909] [2024-11-02 12:38:26,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129513909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:26,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:38:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225088450] [2024-11-02 12:38:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:26,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:26,132 INFO L87 Difference]: Start difference. First operand 14595 states and 52612 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:26,828 INFO L93 Difference]: Finished difference Result 14595 states and 52612 transitions. [2024-11-02 12:38:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:26,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2024-11-02 12:38:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:26,943 INFO L225 Difference]: With dead ends: 14595 [2024-11-02 12:38:26,943 INFO L226 Difference]: Without dead ends: 4524 [2024-11-02 12:38:26,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:26,965 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:26,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 14 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:26,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2024-11-02 12:38:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 4524. [2024-11-02 12:38:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 4520 states have (on average 3.461283185840708) internal successors, (15645), 4523 states have internal predecessors, (15645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 15645 transitions. [2024-11-02 12:38:27,225 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 15645 transitions. Word has length 5 [2024-11-02 12:38:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:27,226 INFO L471 AbstractCegarLoop]: Abstraction has 4524 states and 15645 transitions. [2024-11-02 12:38:27,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 15645 transitions. [2024-11-02 12:38:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:38:27,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:27,229 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:27,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:38:27,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:27,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash 276610016, now seen corresponding path program 1 times [2024-11-02 12:38:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:27,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568466703] [2024-11-02 12:38:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:27,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:27,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:27,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568466703] [2024-11-02 12:38:27,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568466703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:27,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:27,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:38:27,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172131328] [2024-11-02 12:38:27,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:27,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:27,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:27,481 INFO L87 Difference]: Start difference. First operand 4524 states and 15645 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:27,684 INFO L93 Difference]: Finished difference Result 4944 states and 16691 transitions. [2024-11-02 12:38:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:27,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-02 12:38:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:27,764 INFO L225 Difference]: With dead ends: 4944 [2024-11-02 12:38:27,764 INFO L226 Difference]: Without dead ends: 4356 [2024-11-02 12:38:27,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:27,771 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:27,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2024-11-02 12:38:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 4356. [2024-11-02 12:38:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4352 states have (on average 3.452435661764706) internal successors, (15025), 4355 states have internal predecessors, (15025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 15025 transitions. [2024-11-02 12:38:27,994 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 15025 transitions. Word has length 11 [2024-11-02 12:38:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:27,996 INFO L471 AbstractCegarLoop]: Abstraction has 4356 states and 15025 transitions. [2024-11-02 12:38:27,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 15025 transitions. [2024-11-02 12:38:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:38:28,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:28,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:28,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:38:28,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:28,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash -250747347, now seen corresponding path program 1 times [2024-11-02 12:38:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:28,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578712088] [2024-11-02 12:38:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:28,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:28,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:28,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578712088] [2024-11-02 12:38:28,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578712088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:28,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:28,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:28,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649586182] [2024-11-02 12:38:28,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:28,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:28,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:28,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:28,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:28,598 INFO L87 Difference]: Start difference. First operand 4356 states and 15025 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:28,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:28,802 INFO L93 Difference]: Finished difference Result 4356 states and 15025 transitions. [2024-11-02 12:38:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:28,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-02 12:38:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:28,876 INFO L225 Difference]: With dead ends: 4356 [2024-11-02 12:38:28,876 INFO L226 Difference]: Without dead ends: 4146 [2024-11-02 12:38:28,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:28,882 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:28,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 46 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2024-11-02 12:38:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4146. [2024-11-02 12:38:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4146 states, 4143 states have (on average 3.44967414916727) internal successors, (14292), 4145 states have internal predecessors, (14292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 14292 transitions. [2024-11-02 12:38:29,105 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 14292 transitions. Word has length 13 [2024-11-02 12:38:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:29,105 INFO L471 AbstractCegarLoop]: Abstraction has 4146 states and 14292 transitions. [2024-11-02 12:38:29,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 14292 transitions. [2024-11-02 12:38:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:38:29,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:29,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:29,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:38:29,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:29,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:29,110 INFO L85 PathProgramCache]: Analyzing trace with hash -250747346, now seen corresponding path program 1 times [2024-11-02 12:38:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:29,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000478527] [2024-11-02 12:38:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:29,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:29,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000478527] [2024-11-02 12:38:29,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000478527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:29,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:29,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986148806] [2024-11-02 12:38:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:29,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:29,518 INFO L87 Difference]: Start difference. First operand 4146 states and 14292 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:29,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:29,691 INFO L93 Difference]: Finished difference Result 4146 states and 14292 transitions. [2024-11-02 12:38:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:29,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-02 12:38:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:29,748 INFO L225 Difference]: With dead ends: 4146 [2024-11-02 12:38:29,749 INFO L226 Difference]: Without dead ends: 3936 [2024-11-02 12:38:29,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:29,753 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 49 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:29,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2024-11-02 12:38:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3936. [2024-11-02 12:38:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 3934 states have (on average 3.4466192170818504) internal successors, (13559), 3935 states have internal predecessors, (13559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 13559 transitions. [2024-11-02 12:38:30,059 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 13559 transitions. Word has length 13 [2024-11-02 12:38:30,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:30,060 INFO L471 AbstractCegarLoop]: Abstraction has 3936 states and 13559 transitions. [2024-11-02 12:38:30,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 13559 transitions. [2024-11-02 12:38:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:38:30,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:30,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:30,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:38:30,066 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:30,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash -883034376, now seen corresponding path program 1 times [2024-11-02 12:38:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:30,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816155311] [2024-11-02 12:38:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:30,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816155311] [2024-11-02 12:38:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816155311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:30,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:38:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318246884] [2024-11-02 12:38:30,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:30,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:30,167 INFO L87 Difference]: Start difference. First operand 3936 states and 13559 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:30,274 INFO L93 Difference]: Finished difference Result 3936 states and 13559 transitions. [2024-11-02 12:38:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:30,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-02 12:38:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:30,333 INFO L225 Difference]: With dead ends: 3936 [2024-11-02 12:38:30,333 INFO L226 Difference]: Without dead ends: 3054 [2024-11-02 12:38:30,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:30,340 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:30,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2024-11-02 12:38:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 3054. [2024-11-02 12:38:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3054 states, 3053 states have (on average 3.416311824434982) internal successors, (10430), 3053 states have internal predecessors, (10430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 10430 transitions. [2024-11-02 12:38:30,498 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 10430 transitions. Word has length 15 [2024-11-02 12:38:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:30,499 INFO L471 AbstractCegarLoop]: Abstraction has 3054 states and 10430 transitions. [2024-11-02 12:38:30,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 10430 transitions. [2024-11-02 12:38:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:38:30,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:30,504 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:30,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:38:30,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:30,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash -883033013, now seen corresponding path program 1 times [2024-11-02 12:38:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:30,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10002444] [2024-11-02 12:38:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:30,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:30,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10002444] [2024-11-02 12:38:30,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10002444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:30,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:30,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:30,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71240709] [2024-11-02 12:38:30,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:30,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:30,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:30,815 INFO L87 Difference]: Start difference. First operand 3054 states and 10430 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:31,213 INFO L93 Difference]: Finished difference Result 4104 states and 13885 transitions. [2024-11-02 12:38:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:38:31,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-02 12:38:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:31,269 INFO L225 Difference]: With dead ends: 4104 [2024-11-02 12:38:31,269 INFO L226 Difference]: Without dead ends: 2634 [2024-11-02 12:38:31,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:38:31,274 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 72 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:31,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 87 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-11-02 12:38:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2634. [2024-11-02 12:38:31,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 3.3725788074439804) internal successors, (8880), 2633 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 8880 transitions. [2024-11-02 12:38:31,489 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 8880 transitions. Word has length 15 [2024-11-02 12:38:31,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:31,490 INFO L471 AbstractCegarLoop]: Abstraction has 2634 states and 8880 transitions. [2024-11-02 12:38:31,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 8880 transitions. [2024-11-02 12:38:31,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:38:31,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:31,498 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:31,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:38:31,498 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:31,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1593034942, now seen corresponding path program 1 times [2024-11-02 12:38:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309239127] [2024-11-02 12:38:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:31,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:31,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:31,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309239127] [2024-11-02 12:38:31,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309239127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:31,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:31,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:38:31,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150121873] [2024-11-02 12:38:31,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:31,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:38:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:31,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:38:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:38:31,887 INFO L87 Difference]: Start difference. First operand 2634 states and 8880 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:32,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:32,281 INFO L93 Difference]: Finished difference Result 4474 states and 14992 transitions. [2024-11-02 12:38:32,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:38:32,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-02 12:38:32,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:32,334 INFO L225 Difference]: With dead ends: 4474 [2024-11-02 12:38:32,335 INFO L226 Difference]: Without dead ends: 2294 [2024-11-02 12:38:32,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:38:32,341 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:32,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 83 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2024-11-02 12:38:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2294. [2024-11-02 12:38:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2293 states have (on average 3.327518534670737) internal successors, (7630), 2293 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 7630 transitions. [2024-11-02 12:38:32,473 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 7630 transitions. Word has length 17 [2024-11-02 12:38:32,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:32,474 INFO L471 AbstractCegarLoop]: Abstraction has 2294 states and 7630 transitions. [2024-11-02 12:38:32,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:32,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 7630 transitions. [2024-11-02 12:38:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 12:38:32,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:32,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:32,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:38:32,483 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:32,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:32,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1960920061, now seen corresponding path program 1 times [2024-11-02 12:38:32,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:32,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219569747] [2024-11-02 12:38:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:33,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:33,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219569747] [2024-11-02 12:38:33,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219569747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:33,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196289748] [2024-11-02 12:38:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:33,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:33,013 INFO L87 Difference]: Start difference. First operand 2294 states and 7630 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:33,377 INFO L93 Difference]: Finished difference Result 2794 states and 9205 transitions. [2024-11-02 12:38:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:38:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2024-11-02 12:38:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:33,434 INFO L225 Difference]: With dead ends: 2794 [2024-11-02 12:38:33,434 INFO L226 Difference]: Without dead ends: 2094 [2024-11-02 12:38:33,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:38:33,438 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 51 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:33,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2024-11-02 12:38:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2094. [2024-11-02 12:38:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2093 states have (on average 3.3062589584328714) internal successors, (6920), 2093 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 6920 transitions. [2024-11-02 12:38:33,566 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 6920 transitions. Word has length 19 [2024-11-02 12:38:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:33,566 INFO L471 AbstractCegarLoop]: Abstraction has 2094 states and 6920 transitions. [2024-11-02 12:38:33,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 6920 transitions. [2024-11-02 12:38:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:38:33,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:33,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:33,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:38:33,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:33,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1746672983, now seen corresponding path program 1 times [2024-11-02 12:38:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:33,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268522764] [2024-11-02 12:38:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:33,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268522764] [2024-11-02 12:38:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268522764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:38:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043447230] [2024-11-02 12:38:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:38:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:38:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:38:33,966 INFO L87 Difference]: Start difference. First operand 2094 states and 6920 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:34,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:34,553 INFO L93 Difference]: Finished difference Result 4574 states and 14944 transitions. [2024-11-02 12:38:34,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:38:34,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-02 12:38:34,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:34,595 INFO L225 Difference]: With dead ends: 4574 [2024-11-02 12:38:34,595 INFO L226 Difference]: Without dead ends: 2054 [2024-11-02 12:38:34,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:38:34,600 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 127 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:34,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 131 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:38:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2024-11-02 12:38:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1654. [2024-11-02 12:38:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 3.176043557168784) internal successors, (5250), 1653 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 5250 transitions. [2024-11-02 12:38:34,687 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 5250 transitions. Word has length 20 [2024-11-02 12:38:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:34,687 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 5250 transitions. [2024-11-02 12:38:34,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 5250 transitions. [2024-11-02 12:38:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-02 12:38:34,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:34,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:34,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:38:34,691 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:34,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash -271251516, now seen corresponding path program 1 times [2024-11-02 12:38:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:34,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024161453] [2024-11-02 12:38:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:35,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:35,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024161453] [2024-11-02 12:38:35,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024161453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:35,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:35,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:38:35,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123740950] [2024-11-02 12:38:35,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:35,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:38:35,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:35,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:38:35,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:35,720 INFO L87 Difference]: Start difference. First operand 1654 states and 5250 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:36,257 INFO L93 Difference]: Finished difference Result 2054 states and 6490 transitions. [2024-11-02 12:38:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:38:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2024-11-02 12:38:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:36,314 INFO L225 Difference]: With dead ends: 2054 [2024-11-02 12:38:36,314 INFO L226 Difference]: Without dead ends: 1554 [2024-11-02 12:38:36,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:38:36,317 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 60 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:36,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 122 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:38:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2024-11-02 12:38:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2024-11-02 12:38:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1553 states have (on average 3.1519639407598197) internal successors, (4895), 1553 states have internal predecessors, (4895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 4895 transitions. [2024-11-02 12:38:36,425 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 4895 transitions. Word has length 21 [2024-11-02 12:38:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:36,426 INFO L471 AbstractCegarLoop]: Abstraction has 1554 states and 4895 transitions. [2024-11-02 12:38:36,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 4895 transitions. [2024-11-02 12:38:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:38:36,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:36,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:36,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:38:36,431 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:36,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1286327234, now seen corresponding path program 1 times [2024-11-02 12:38:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981105549] [2024-11-02 12:38:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:36,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:36,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981105549] [2024-11-02 12:38:36,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981105549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:36,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:36,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:36,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992043507] [2024-11-02 12:38:36,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:36,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:36,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:36,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:36,687 INFO L87 Difference]: Start difference. First operand 1554 states and 4895 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:36,846 INFO L93 Difference]: Finished difference Result 2356 states and 7276 transitions. [2024-11-02 12:38:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-02 12:38:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:36,916 INFO L225 Difference]: With dead ends: 2356 [2024-11-02 12:38:36,917 INFO L226 Difference]: Without dead ends: 1284 [2024-11-02 12:38:36,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:36,920 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:36,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 27 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-02 12:38:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2024-11-02 12:38:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 3.020265003897116) internal successors, (3875), 1283 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3875 transitions. [2024-11-02 12:38:36,995 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3875 transitions. Word has length 22 [2024-11-02 12:38:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:36,996 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 3875 transitions. [2024-11-02 12:38:36,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3875 transitions. [2024-11-02 12:38:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:38:36,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:37,000 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:37,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:38:37,000 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:37,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1494459581, now seen corresponding path program 1 times [2024-11-02 12:38:37,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:37,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979713507] [2024-11-02 12:38:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:37,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:37,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:37,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979713507] [2024-11-02 12:38:37,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979713507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:37,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:37,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:37,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573231065] [2024-11-02 12:38:37,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:37,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:37,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:37,269 INFO L87 Difference]: Start difference. First operand 1284 states and 3875 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:37,454 INFO L93 Difference]: Finished difference Result 1632 states and 4819 transitions. [2024-11-02 12:38:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:37,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-02 12:38:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:37,485 INFO L225 Difference]: With dead ends: 1632 [2024-11-02 12:38:37,485 INFO L226 Difference]: Without dead ends: 830 [2024-11-02 12:38:37,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:37,488 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:37,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 31 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-11-02 12:38:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2024-11-02 12:38:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 2.8226779252110976) internal successors, (2340), 829 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2340 transitions. [2024-11-02 12:38:37,551 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2340 transitions. Word has length 24 [2024-11-02 12:38:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:37,551 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 2340 transitions. [2024-11-02 12:38:37,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:37,552 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2340 transitions. [2024-11-02 12:38:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:38:37,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:37,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:37,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 12:38:37,555 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-02 12:38:37,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 180260706, now seen corresponding path program 1 times [2024-11-02 12:38:37,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:37,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947062328] [2024-11-02 12:38:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat