./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/insertionsort-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/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_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/insertionsort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/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_613a108c-5884-4c70-8040-3f1e62513b3c/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 56160afe0156ee9cb1db810e306de9e54e614e31d545b68546457414a273604d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:29:33,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:29:33,131 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:29:33,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:29:33,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:29:33,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:29:33,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:29:33,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:29:33,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:29:33,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:29:33,174 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:29:33,175 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:29:33,175 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:29:33,175 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:29:33,176 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:29:33,176 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:29:33,176 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:29:33,177 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:29:33,177 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:29:33,181 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:29:33,181 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:29:33,185 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:29:33,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:29:33,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:29:33,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:29:33,186 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:29:33,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:29:33,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:29:33,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:29:33,187 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:29:33,188 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:29:33,188 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:29:33,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:29:33,189 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:29:33,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:29:33,189 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:29:33,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:29:33,190 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:29:33,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:29:33,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:29:33,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:29:33,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:29:33,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:29:33,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:29:33,194 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:29:33,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:29:33,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:29:33,195 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:29:33,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:29:33,195 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_613a108c-5884-4c70-8040-3f1e62513b3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56160afe0156ee9cb1db810e306de9e54e614e31d545b68546457414a273604d [2024-11-02 12:29:33,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:29:33,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:29:33,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:29:33,491 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:29:33,492 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:29:33,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/array-memsafety/insertionsort-alloca-1.i Unable to find full path for "g++" [2024-11-02 12:29:35,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:29:35,974 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:29:35,975 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/sv-benchmarks/c/array-memsafety/insertionsort-alloca-1.i [2024-11-02 12:29:35,989 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/data/145683631/42ee4e0fa870403693bfefdd9e95d251/FLAGf8908a491 [2024-11-02 12:29:36,001 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/data/145683631/42ee4e0fa870403693bfefdd9e95d251 [2024-11-02 12:29:36,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:29:36,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:29:36,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:29:36,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:29:36,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:29:36,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420e2b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36, skipping insertion in model container [2024-11-02 12:29:36,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,052 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:29:36,469 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:29:36,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:29:36,490 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:29:36,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:29:36,603 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:29:36,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36 WrapperNode [2024-11-02 12:29:36,604 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:29:36,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:29:36,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:29:36,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:29:36,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,665 INFO L138 Inliner]: procedures = 116, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-02 12:29:36,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:29:36,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:29:36,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:29:36,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:29:36,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:29:36,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:29:36,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:29:36,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:29:36,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (1/1) ... [2024-11-02 12:29:36,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:29:36,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:36,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:29:36,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:29:36,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:29:36,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:29:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:29:36,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:29:36,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:29:36,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:29:36,985 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:29:36,988 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:29:37,273 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-02 12:29:37,273 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:29:37,364 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:29:37,364 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-02 12:29:37,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:37 BoogieIcfgContainer [2024-11-02 12:29:37,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:29:37,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:29:37,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:29:37,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:29:37,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:29:36" (1/3) ... [2024-11-02 12:29:37,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e248a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:37, skipping insertion in model container [2024-11-02 12:29:37,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:36" (2/3) ... [2024-11-02 12:29:37,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e248a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:37, skipping insertion in model container [2024-11-02 12:29:37,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:37" (3/3) ... [2024-11-02 12:29:37,378 INFO L112 eAbstractionObserver]: Analyzing ICFG insertionsort-alloca-1.i [2024-11-02 12:29:37,400 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:29:37,415 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-02 12:29:37,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:29:37,502 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;@7153b0e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:29:37,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-02 12:29:37,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 26 states have internal predecessors, (31), 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 12:29:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:29:37,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:37,513 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:29:37,514 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:37,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:37,521 INFO L85 PathProgramCache]: Analyzing trace with hash 119710, now seen corresponding path program 1 times [2024-11-02 12:29:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:37,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942071023] [2024-11-02 12:29:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:37,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:37,815 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 12:29:37,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:37,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942071023] [2024-11-02 12:29:37,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942071023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:37,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:37,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:29:37,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585220829] [2024-11-02 12:29:37,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:37,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:37,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:37,875 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 26 states have internal predecessors, (31), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:37,945 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-02 12:29:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:37,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:29:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:37,956 INFO L225 Difference]: With dead ends: 26 [2024-11-02 12:29:37,957 INFO L226 Difference]: Without dead ends: 25 [2024-11-02 12:29:37,959 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 12:29:37,963 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:37,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:37,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-02 12:29:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-02 12:29:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 24 states have internal predecessors, (28), 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 12:29:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-02 12:29:38,001 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 3 [2024-11-02 12:29:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:38,003 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-02 12:29:38,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-02 12:29:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:29:38,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:38,004 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:29:38,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:29:38,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:38,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash 119711, now seen corresponding path program 1 times [2024-11-02 12:29:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967655065] [2024-11-02 12:29:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:38,488 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 12:29:38,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967655065] [2024-11-02 12:29:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967655065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106132611] [2024-11-02 12:29:38,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:38,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:29:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:38,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:29:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:29:38,495 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:38,633 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-02 12:29:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:38,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:29:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:38,635 INFO L225 Difference]: With dead ends: 27 [2024-11-02 12:29:38,635 INFO L226 Difference]: Without dead ends: 27 [2024-11-02 12:29:38,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:38,637 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:38,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-02 12:29:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-02 12:29:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 2.066666666666667) internal successors, (31), 26 states have internal predecessors, (31), 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 12:29:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-02 12:29:38,656 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 3 [2024-11-02 12:29:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:38,657 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-02 12:29:38,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-02 12:29:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:29:38,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:38,663 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:29:38,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:29:38,664 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:38,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash 3788423, now seen corresponding path program 1 times [2024-11-02 12:29:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:38,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090392716] [2024-11-02 12:29:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:38,788 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 12:29:38,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090392716] [2024-11-02 12:29:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090392716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:38,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:38,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:29:38,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260060376] [2024-11-02 12:29:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:38,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:29:38,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:29:38,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:29:38,794 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:38,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:38,862 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-02 12:29:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:29:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:29:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:38,865 INFO L225 Difference]: With dead ends: 28 [2024-11-02 12:29:38,867 INFO L226 Difference]: Without dead ends: 28 [2024-11-02 12:29:38,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:29:38,871 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:38,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-02 12:29:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-02 12:29:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 2.0) internal successors, (32), 27 states have internal predecessors, (32), 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 12:29:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-02 12:29:38,881 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 4 [2024-11-02 12:29:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:38,882 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-02 12:29:38,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-02 12:29:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:29:38,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:38,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:29:38,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:29:38,885 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:38,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:38,889 INFO L85 PathProgramCache]: Analyzing trace with hash 3790326, now seen corresponding path program 1 times [2024-11-02 12:29:38,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:38,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100524799] [2024-11-02 12:29:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:38,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:39,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:39,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100524799] [2024-11-02 12:29:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100524799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:39,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661562569] [2024-11-02 12:29:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:39,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:39,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:39,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:39,067 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:39,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:39,116 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-02 12:29:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:39,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:29:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:39,119 INFO L225 Difference]: With dead ends: 27 [2024-11-02 12:29:39,119 INFO L226 Difference]: Without dead ends: 27 [2024-11-02 12:29:39,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:39,120 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:39,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 37 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:29:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-02 12:29:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-02 12:29:39,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 2.0) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-02 12:29:39,130 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 4 [2024-11-02 12:29:39,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:39,130 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-02 12:29:39,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-02 12:29:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:29:39,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:39,131 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2024-11-02 12:29:39,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:29:39,132 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:39,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash 115109127, now seen corresponding path program 1 times [2024-11-02 12:29:39,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:39,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189914367] [2024-11-02 12:29:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:39,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:39,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:39,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189914367] [2024-11-02 12:29:39,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189914367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:39,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950491921] [2024-11-02 12:29:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:39,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:39,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:39,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:39,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:29:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:39,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-02 12:29:39,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:39,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-02 12:29:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:39,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:29:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:40,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950491921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:29:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1485146021] [2024-11-02 12:29:40,121 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2024-11-02 12:29:40,121 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:29:40,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:29:40,132 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:29:40,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:29:40,755 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:29:42,349 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '296#(exists ((|v_ULTIMATE.start_main_~a~0#1.base_26| Int) (|v_ULTIMATE.start_main_~i~1#1_37| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |v_ULTIMATE.start_main_~a~0#1.base_26|) (<= (select |#length| |v_ULTIMATE.start_main_~a~0#1.base_26|) (+ 3 (* |v_ULTIMATE.start_main_~i~1#1_37| 4))) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= |ULTIMATE.start_main_#t~nondet10#1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~i~1#1_37|) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet10#1|)) (<= 1 |ULTIMATE.start_main_~array_size~0#1|)))' at error location [2024-11-02 12:29:42,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:29:42,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:29:42,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-02 12:29:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661851512] [2024-11-02 12:29:42,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:29:42,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 12:29:42,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:42,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 12:29:42,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=139, Unknown=1, NotChecked=0, Total=182 [2024-11-02 12:29:42,352 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 12:29:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:42,494 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-02 12:29:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:29:42,496 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 5 [2024-11-02 12:29:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:42,497 INFO L225 Difference]: With dead ends: 26 [2024-11-02 12:29:42,498 INFO L226 Difference]: Without dead ends: 26 [2024-11-02 12:29:42,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=51, Invalid=158, Unknown=1, NotChecked=0, Total=210 [2024-11-02 12:29:42,499 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:42,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-02 12:29:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-02 12:29:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 2.0) internal successors, (28), 24 states have internal predecessors, (28), 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 12:29:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-02 12:29:42,508 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2024-11-02 12:29:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:42,509 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-02 12:29:42,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 12:29:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-02 12:29:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:29:42,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:42,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:29:42,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:29:42,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:42,712 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:42,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash -726506977, now seen corresponding path program 1 times [2024-11-02 12:29:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:42,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541636084] [2024-11-02 12:29:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:42,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:42,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:42,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541636084] [2024-11-02 12:29:42,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541636084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:42,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:42,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:29:42,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122722277] [2024-11-02 12:29:42,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:42,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:29:42,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:42,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:29:42,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:29:42,764 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 12:29:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:42,824 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2024-11-02 12:29:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:29:42,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2024-11-02 12:29:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:42,827 INFO L225 Difference]: With dead ends: 20 [2024-11-02 12:29:42,827 INFO L226 Difference]: Without dead ends: 20 [2024-11-02 12:29:42,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:29:42,828 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:42,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-02 12:29:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-02 12:29:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 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 12:29:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-02 12:29:42,834 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2024-11-02 12:29:42,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:42,834 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-02 12:29:42,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 12:29:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-02 12:29:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:29:42,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:42,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:29:42,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:29:42,838 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:42,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash -726506976, now seen corresponding path program 1 times [2024-11-02 12:29:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:42,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797759132] [2024-11-02 12:29:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:42,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797759132] [2024-11-02 12:29:42,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797759132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:42,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133644160] [2024-11-02 12:29:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:42,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:42,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:42,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:42,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:29:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:42,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:29:42,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:43,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:29:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:43,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133644160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:29:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1051976250] [2024-11-02 12:29:43,051 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-02 12:29:43,052 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:29:43,052 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:29:43,052 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:29:43,052 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:29:43,412 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:29:43,552 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '434#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (exists ((|v_ULTIMATE.start_insertionSort_~a#1.base_32| Int)) (and (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_32|) (<= (select |#length| |v_ULTIMATE.start_insertionSort_~a#1.base_32|) 7))) (<= 2 |ULTIMATE.start_insertionSort_~array_size#1|))' at error location [2024-11-02 12:29:43,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:29:43,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:29:43,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-02 12:29:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366233567] [2024-11-02 12:29:43,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:29:43,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:29:43,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:29:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:29:43,555 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 12:29:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:43,606 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-02 12:29:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:29:43,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 6 [2024-11-02 12:29:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:43,607 INFO L225 Difference]: With dead ends: 24 [2024-11-02 12:29:43,608 INFO L226 Difference]: Without dead ends: 24 [2024-11-02 12:29:43,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:29:43,609 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:43,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 63 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:29:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-02 12:29:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-11-02 12:29:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:43,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-02 12:29:43,612 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 6 [2024-11-02 12:29:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:43,613 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-02 12:29:43,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 12:29:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-02 12:29:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:29:43,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:43,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:29:43,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:29:43,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-02 12:29:43,819 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:43,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:43,819 INFO L85 PathProgramCache]: Analyzing trace with hash -726505074, now seen corresponding path program 1 times [2024-11-02 12:29:43,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:43,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008239061] [2024-11-02 12:29:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:43,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:29:43,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:43,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008239061] [2024-11-02 12:29:43,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008239061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:43,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:43,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:43,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116627639] [2024-11-02 12:29:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:43,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:29:43,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:29:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:29:43,944 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 12:29:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:43,985 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-11-02 12:29:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:29:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-02 12:29:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:43,987 INFO L225 Difference]: With dead ends: 22 [2024-11-02 12:29:43,987 INFO L226 Difference]: Without dead ends: 20 [2024-11-02 12:29:43,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:29:43,988 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:43,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:29:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-02 12:29:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-02 12:29:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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 12:29:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-02 12:29:43,992 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2024-11-02 12:29:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:43,993 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-02 12:29:43,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 12:29:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-02 12:29:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:29:43,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:43,994 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-02 12:29:43,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:29:43,995 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:43,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:43,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1834250168, now seen corresponding path program 2 times [2024-11-02 12:29:43,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:43,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004107600] [2024-11-02 12:29:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:43,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:44,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004107600] [2024-11-02 12:29:44,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004107600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018915580] [2024-11-02 12:29:44,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:29:44,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:44,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:44,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:44,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:29:44,275 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-02 12:29:44,275 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:29:44,281 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-02 12:29:44,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:44,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-02 12:29:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:29:44,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:29:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018915580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:44,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:29:44,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2024-11-02 12:29:44,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303442061] [2024-11-02 12:29:44,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:44,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:29:44,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:44,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:29:44,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:29:44,532 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 12:29:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:44,650 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-02 12:29:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:29:44,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 12:29:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:44,651 INFO L225 Difference]: With dead ends: 29 [2024-11-02 12:29:44,651 INFO L226 Difference]: Without dead ends: 29 [2024-11-02 12:29:44,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:29:44,652 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:44,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 21 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-02 12:29:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2024-11-02 12:29:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 21 states have internal predecessors, (25), 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 12:29:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-02 12:29:44,660 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2024-11-02 12:29:44,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:44,660 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-02 12:29:44,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 12:29:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-02 12:29:44,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:29:44,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:44,661 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:44,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:29:44,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-02 12:29:44,866 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:44,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:44,867 INFO L85 PathProgramCache]: Analyzing trace with hash -720619772, now seen corresponding path program 1 times [2024-11-02 12:29:44,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:44,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152944316] [2024-11-02 12:29:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:44,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:29:44,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:44,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152944316] [2024-11-02 12:29:44,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152944316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:44,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:44,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:29:44,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710638549] [2024-11-02 12:29:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:44,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:29:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:29:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:44,986 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:45,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:45,104 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2024-11-02 12:29:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:29:45,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-02 12:29:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:45,105 INFO L225 Difference]: With dead ends: 36 [2024-11-02 12:29:45,105 INFO L226 Difference]: Without dead ends: 36 [2024-11-02 12:29:45,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:29:45,106 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:45,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 22 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-02 12:29:45,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2024-11-02 12:29:45,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 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 12:29:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-02 12:29:45,111 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 11 [2024-11-02 12:29:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:45,112 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-02 12:29:45,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-02 12:29:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 12:29:45,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:45,116 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:45,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:29:45,117 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:45,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:45,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1731247851, now seen corresponding path program 1 times [2024-11-02 12:29:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:45,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35964726] [2024-11-02 12:29:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:45,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:29:45,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:45,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35964726] [2024-11-02 12:29:45,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35964726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:45,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:45,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:29:45,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521804610] [2024-11-02 12:29:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:45,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:29:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:45,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:29:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:45,219 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:45,309 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-02 12:29:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:29:45,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-02 12:29:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:45,311 INFO L225 Difference]: With dead ends: 40 [2024-11-02 12:29:45,311 INFO L226 Difference]: Without dead ends: 40 [2024-11-02 12:29:45,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:29:45,312 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:45,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-02 12:29:45,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 29. [2024-11-02 12:29:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.375) internal successors, (33), 28 states have internal predecessors, (33), 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 12:29:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-02 12:29:45,319 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 14 [2024-11-02 12:29:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:45,319 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-02 12:29:45,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:29:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-02 12:29:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:29:45,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:45,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:45,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:29:45,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:45,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:45,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2024642671, now seen corresponding path program 1 times [2024-11-02 12:29:45,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:45,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062810467] [2024-11-02 12:29:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:45,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:45,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:45,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062810467] [2024-11-02 12:29:45,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062810467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:45,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463687312] [2024-11-02 12:29:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:45,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:45,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:45,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:45,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:29:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:45,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 12:29:45,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:45,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:29:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:45,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463687312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:29:45,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [814228499] [2024-11-02 12:29:45,695 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:29:45,695 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:29:45,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:29:45,696 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:29:45,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:29:46,445 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:29:49,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '860#(exists ((|v_ULTIMATE.start_insertionSort_~i~0#1_33| Int) (|v_ULTIMATE.start_insertionSort_~a#1.base_34| Int)) (and (<= (select |#length| |v_ULTIMATE.start_insertionSort_~a#1.base_34|) (+ (* 4 |v_ULTIMATE.start_insertionSort_~i~0#1_33|) 3)) (or (and (= (select |#valid| |v_ULTIMATE.start_insertionSort_~a#1.base_34|) 1) (exists ((|v_ULTIMATE.start_insertionSort_~j~0#1_38| Int) (|v_#memory_int_50| (Array Int (Array Int Int)))) (and (<= (select (select |v_#memory_int_50| |v_ULTIMATE.start_insertionSort_~a#1.base_34|) (+ (- 4) (* |v_ULTIMATE.start_insertionSort_~j~0#1_38| 4))) (select (select |#memory_int| |v_ULTIMATE.start_insertionSort_~a#1.base_34|) (* |v_ULTIMATE.start_insertionSort_~j~0#1_38| 4))) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 1 |v_ULTIMATE.start_insertionSort_~j~0#1_38|) (<= (+ (* |v_ULTIMATE.start_insertionSort_~j~0#1_38| 4) 4) (select |#length| |v_ULTIMATE.start_insertionSort_~a#1.base_34|)) (= |#memory_int| (store |v_#memory_int_50| |v_ULTIMATE.start_insertionSort_~a#1.base_34| (store (select |v_#memory_int_50| |v_ULTIMATE.start_insertionSort_~a#1.base_34|) (* |v_ULTIMATE.start_insertionSort_~j~0#1_38| 4) (select (select |#memory_int| |v_ULTIMATE.start_insertionSort_~a#1.base_34|) (* |v_ULTIMATE.start_insertionSort_~j~0#1_38| 4))))) (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_34|))) (<= (+ |v_ULTIMATE.start_insertionSort_~i~0#1_33| 1) |ULTIMATE.start_insertionSort_~array_size#1|)) (and (= |v_ULTIMATE.start_insertionSort_~i~0#1_33| 1) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 2 |ULTIMATE.start_insertionSort_~array_size#1|) (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_34|)))))' at error location [2024-11-02 12:29:49,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:29:49,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:29:49,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-02 12:29:49,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079414195] [2024-11-02 12:29:49,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:29:49,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 12:29:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:49,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 12:29:49,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=322, Unknown=3, NotChecked=0, Total=380 [2024-11-02 12:29:49,406 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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 12:29:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:49,488 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-02 12:29:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:29:49,489 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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 12:29:49,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:49,490 INFO L225 Difference]: With dead ends: 53 [2024-11-02 12:29:49,490 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 12:29:49,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=55, Invalid=322, Unknown=3, NotChecked=0, Total=380 [2024-11-02 12:29:49,491 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:49,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:29:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 12:29:49,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-02 12:29:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 45 states have internal predecessors, (56), 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 12:29:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-11-02 12:29:49,496 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 15 [2024-11-02 12:29:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:49,496 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-11-02 12:29:49,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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 12:29:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-11-02 12:29:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:29:49,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:49,497 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:49,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 12:29:49,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-02 12:29:49,699 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:49,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:49,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1017468375, now seen corresponding path program 2 times [2024-11-02 12:29:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940229219] [2024-11-02 12:29:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:50,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:50,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940229219] [2024-11-02 12:29:50,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940229219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:50,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503229522] [2024-11-02 12:29:50,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:29:50,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:50,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:50,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:50,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:29:50,195 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-02 12:29:50,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:29:50,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-02 12:29:50,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:50,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-02 12:29:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:29:50,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:29:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:29:50,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503229522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:29:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1321926068] [2024-11-02 12:29:50,964 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:29:50,964 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:29:50,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:29:50,965 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:29:50,965 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:29:51,566 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:29:52,581 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1080#(exists ((|v_ULTIMATE.start_insertionSort_~a#1.base_36| Int) (|v_ULTIMATE.start_insertionSort_~i~0#1_41| Int)) (and (or (and (= (select |#valid| |v_ULTIMATE.start_insertionSort_~a#1.base_36|) 1) (<= (+ |v_ULTIMATE.start_insertionSort_~i~0#1_41| 1) |ULTIMATE.start_insertionSort_~array_size#1|) (exists ((|v_#memory_int_62| (Array Int (Array Int Int))) (|v_ULTIMATE.start_insertionSort_~j~0#1_44| Int)) (and (<= 1 |#StackHeapBarrier|) (= |#memory_int| (store |v_#memory_int_62| |v_ULTIMATE.start_insertionSort_~a#1.base_36| (store (select |v_#memory_int_62| |v_ULTIMATE.start_insertionSort_~a#1.base_36|) (* |v_ULTIMATE.start_insertionSort_~j~0#1_44| 4) (select (select |#memory_int| |v_ULTIMATE.start_insertionSort_~a#1.base_36|) (* |v_ULTIMATE.start_insertionSort_~j~0#1_44| 4))))) (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_36|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 1 |v_ULTIMATE.start_insertionSort_~j~0#1_44|) (<= (select (select |v_#memory_int_62| |v_ULTIMATE.start_insertionSort_~a#1.base_36|) (+ (- 4) (* |v_ULTIMATE.start_insertionSort_~j~0#1_44| 4))) (select (select |#memory_int| |v_ULTIMATE.start_insertionSort_~a#1.base_36|) (* |v_ULTIMATE.start_insertionSort_~j~0#1_44| 4))) (<= (+ (* |v_ULTIMATE.start_insertionSort_~j~0#1_44| 4) 4) (select |#length| |v_ULTIMATE.start_insertionSort_~a#1.base_36|))))) (and (<= 1 |#StackHeapBarrier|) (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_36|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (= |v_ULTIMATE.start_insertionSort_~i~0#1_41| 1) (<= 2 |ULTIMATE.start_insertionSort_~array_size#1|))) (<= (select |#length| |v_ULTIMATE.start_insertionSort_~a#1.base_36|) (+ 3 (* 4 |v_ULTIMATE.start_insertionSort_~i~0#1_41|)))))' at error location [2024-11-02 12:29:52,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:29:52,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:29:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2024-11-02 12:29:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657760411] [2024-11-02 12:29:52,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:29:52,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 12:29:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 12:29:52,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=531, Unknown=2, NotChecked=0, Total=600 [2024-11-02 12:29:52,585 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 12:29:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:53,206 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-02 12:29:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:29:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 12:29:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:53,208 INFO L225 Difference]: With dead ends: 53 [2024-11-02 12:29:53,208 INFO L226 Difference]: Without dead ends: 53 [2024-11-02 12:29:53,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=872, Unknown=3, NotChecked=0, Total=992 [2024-11-02 12:29:53,209 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:53,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 121 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:29:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-02 12:29:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2024-11-02 12:29:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 44 states have internal predecessors, (55), 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 12:29:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-02 12:29:53,215 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 17 [2024-11-02 12:29:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:53,216 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-02 12:29:53,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 12:29:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-02 12:29:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:29:53,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:53,220 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:53,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:29:53,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-02 12:29:53,425 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:53,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash 94257705, now seen corresponding path program 1 times [2024-11-02 12:29:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:53,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008030652] [2024-11-02 12:29:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:53,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:29:53,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:53,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008030652] [2024-11-02 12:29:53,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008030652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:53,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155161057] [2024-11-02 12:29:53,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:53,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:53,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:53,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:53,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:29:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:53,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:29:53,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:29:53,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:29:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:29:53,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155161057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:29:53,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2109775793] [2024-11-02 12:29:53,645 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-02 12:29:53,645 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:29:53,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:29:53,646 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:29:53,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:29:54,020 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:29:54,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2109775793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:54,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:29:54,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 6, 6] total 18 [2024-11-02 12:29:54,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245654731] [2024-11-02 12:29:54,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:54,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:29:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:29:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:29:54,675 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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 12:29:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:54,907 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-02 12:29:54,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-02 12:29:54,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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 17 [2024-11-02 12:29:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:54,909 INFO L225 Difference]: With dead ends: 74 [2024-11-02 12:29:54,910 INFO L226 Difference]: Without dead ends: 72 [2024-11-02 12:29:54,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-11-02 12:29:54,910 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:54,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:29:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-02 12:29:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2024-11-02 12:29:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 54 states have internal predecessors, (68), 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 12:29:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2024-11-02 12:29:54,921 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 17 [2024-11-02 12:29:54,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:54,921 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2024-11-02 12:29:54,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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 12:29:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2024-11-02 12:29:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:29:54,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:54,922 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:54,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-02 12:29:55,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-02 12:29:55,123 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:55,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:55,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1817684101, now seen corresponding path program 1 times [2024-11-02 12:29:55,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:55,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394818560] [2024-11-02 12:29:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:55,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:55,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:55,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394818560] [2024-11-02 12:29:55,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394818560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:55,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412517637] [2024-11-02 12:29:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:55,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:55,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:55,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:55,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 12:29:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:55,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 12:29:55,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:29:55,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:29:55,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-02 12:29:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:29:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412517637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:29:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [524452695] [2024-11-02 12:29:55,763 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:29:55,763 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:29:55,764 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:29:55,764 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:29:55,764 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:29:56,270 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:29:58,276 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_insertionSort_~j~0#1_59| Int) (|v_ULTIMATE.start_insertionSort_~a#1.base_40| Int)) (and (<= 1 |v_ULTIMATE.start_insertionSort_~j~0#1_59|) (let ((.cse0 (<= 2 |c_ULTIMATE.start_main_#t~malloc9#1.base|)) (.cse1 (<= 1 |c_#StackHeapBarrier|)) (.cse2 (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_40|))) (or (and (<= 2 |c_ULTIMATE.start_insertionSort_~array_size#1|) .cse0 .cse1 (<= 1 |c_ULTIMATE.start_insertionSort_~i~0#1|) .cse2) (and .cse0 .cse1 (<= 2 |c_ULTIMATE.start_insertionSort_~i~0#1|) .cse2 (<= 3 |c_ULTIMATE.start_insertionSort_~array_size#1|) (<= 2 |v_ULTIMATE.start_insertionSort_~j~0#1_59|)))) (<= (+ (select |c_#length| |v_ULTIMATE.start_insertionSort_~a#1.base_40|) 1) (* |v_ULTIMATE.start_insertionSort_~j~0#1_59| 4)))) is different from true [2024-11-02 12:29:58,962 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1577#(exists ((|v_ULTIMATE.start_insertionSort_~j~0#1_59| Int) (|v_ULTIMATE.start_insertionSort_~a#1.base_40| Int)) (and (or (and (<= 1 |#StackHeapBarrier|) (<= 3 |ULTIMATE.start_insertionSort_~array_size#1|) (<= 2 |ULTIMATE.start_insertionSort_~i~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_40|) (<= 2 |v_ULTIMATE.start_insertionSort_~j~0#1_59|)) (and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_insertionSort_~i~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_40|) (<= 2 |ULTIMATE.start_insertionSort_~array_size#1|))) (<= 1 |v_ULTIMATE.start_insertionSort_~j~0#1_59|) (<= (+ (select |#length| |v_ULTIMATE.start_insertionSort_~a#1.base_40|) 1) (* |v_ULTIMATE.start_insertionSort_~j~0#1_59| 4))))' at error location [2024-11-02 12:29:58,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:29:58,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:29:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 15 [2024-11-02 12:29:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247556612] [2024-11-02 12:29:58,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:29:58,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-02 12:29:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-02 12:29:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=499, Unknown=3, NotChecked=46, Total=650 [2024-11-02 12:29:58,965 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 17 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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 12:29:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:59,448 INFO L93 Difference]: Finished difference Result 87 states and 114 transitions. [2024-11-02 12:29:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:29:59,449 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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 12:29:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:59,450 INFO L225 Difference]: With dead ends: 87 [2024-11-02 12:29:59,450 INFO L226 Difference]: Without dead ends: 87 [2024-11-02 12:29:59,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=155, Invalid=776, Unknown=3, NotChecked=58, Total=992 [2024-11-02 12:29:59,451 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 79 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:59,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 107 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:29:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-02 12:29:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2024-11-02 12:29:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.34375) internal successors, (86), 67 states have internal predecessors, (86), 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 12:29:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2024-11-02 12:29:59,456 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 20 [2024-11-02 12:29:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:59,456 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2024-11-02 12:29:59,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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 12:29:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2024-11-02 12:29:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:29:59,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:59,458 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:59,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-02 12:29:59,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:59,659 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:59,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 51936586, now seen corresponding path program 1 times [2024-11-02 12:29:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:59,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025655508] [2024-11-02 12:29:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:29:59,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025655508] [2024-11-02 12:29:59,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025655508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:59,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:59,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:29:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40967363] [2024-11-02 12:29:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:59,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:59,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:59,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:59,694 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 12:29:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:59,719 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2024-11-02 12:29:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 22 [2024-11-02 12:29:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:59,720 INFO L225 Difference]: With dead ends: 55 [2024-11-02 12:29:59,720 INFO L226 Difference]: Without dead ends: 44 [2024-11-02 12:29:59,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:59,721 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:59,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:29:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-02 12:29:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-02 12:29:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 41 states have internal predecessors, (50), 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 12:29:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-02 12:29:59,724 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 22 [2024-11-02 12:29:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:59,724 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-02 12:29:59,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 12:29:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-02 12:29:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 12:29:59,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:59,725 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:59,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-02 12:29:59,725 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:29:59,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash 432350717, now seen corresponding path program 1 times [2024-11-02 12:29:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:59,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484301023] [2024-11-02 12:29:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:59,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:29:59,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:59,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484301023] [2024-11-02 12:29:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484301023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:59,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067687755] [2024-11-02 12:29:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:59,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:59,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:59,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:59,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 12:29:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:59,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:29:59,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:29:59,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:30:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:30:00,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067687755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:30:00,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [462723219] [2024-11-02 12:30:00,009 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-02 12:30:00,009 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:30:00,010 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:30:00,010 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:30:00,010 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:30:00,858 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:30:01,279 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2017#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_insertionSort_~i~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 2 |ULTIMATE.start_insertionSort_~array_size#1|))' at error location [2024-11-02 12:30:01,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:30:01,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:30:01,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-02 12:30:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042021357] [2024-11-02 12:30:01,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:30:01,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:30:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:30:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2024-11-02 12:30:01,281 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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 12:30:01,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:01,434 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-11-02 12:30:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:30:01,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-02 12:30:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:01,435 INFO L225 Difference]: With dead ends: 52 [2024-11-02 12:30:01,435 INFO L226 Difference]: Without dead ends: 52 [2024-11-02 12:30:01,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=370, Unknown=2, NotChecked=0, Total=462 [2024-11-02 12:30:01,436 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 55 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:01,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 35 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-02 12:30:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2024-11-02 12:30:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 41 states have internal predecessors, (48), 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 12:30:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-02 12:30:01,439 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 27 [2024-11-02 12:30:01,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:01,439 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-02 12:30:01,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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 12:30:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-02 12:30:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-02 12:30:01,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:01,440 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:01,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-02 12:30:01,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:01,641 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:30:01,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:01,641 INFO L85 PathProgramCache]: Analyzing trace with hash 517823843, now seen corresponding path program 1 times [2024-11-02 12:30:01,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:01,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054491231] [2024-11-02 12:30:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:01,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-02 12:30:01,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:01,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054491231] [2024-11-02 12:30:01,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054491231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:30:01,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017917592] [2024-11-02 12:30:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:01,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:01,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:01,904 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:01,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 12:30:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:01,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:30:01,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:30:02,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:02,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017917592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:02,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:30:02,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2024-11-02 12:30:02,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899815569] [2024-11-02 12:30:02,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:02,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:02,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:02,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:02,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:02,022 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 12:30:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:02,065 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2024-11-02 12:30:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:02,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 28 [2024-11-02 12:30:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:02,068 INFO L225 Difference]: With dead ends: 48 [2024-11-02 12:30:02,068 INFO L226 Difference]: Without dead ends: 48 [2024-11-02 12:30:02,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:02,069 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:02,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:30:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-02 12:30:02,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2024-11-02 12:30:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 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 12:30:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-02 12:30:02,076 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 28 [2024-11-02 12:30:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:02,076 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-02 12:30:02,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 12:30:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-02 12:30:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 12:30:02,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:02,077 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-02 12:30:02,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-02 12:30:02,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:02,278 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:30:02,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:02,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1892493937, now seen corresponding path program 1 times [2024-11-02 12:30:02,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:02,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628625538] [2024-11-02 12:30:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:30:02,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:02,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628625538] [2024-11-02 12:30:02,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628625538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:30:02,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755500827] [2024-11-02 12:30:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:02,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:02,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:02,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:02,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 12:30:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:02,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:30:02,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:30:02,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:30:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:30:02,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755500827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:30:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1081818294] [2024-11-02 12:30:02,645 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-02 12:30:02,646 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:30:02,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:30:02,646 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:30:02,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:30:03,714 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:30:04,227 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2505#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (exists ((|v_ULTIMATE.start_insertionSort_~a#1.base_44| Int) (|v_ULTIMATE.start_insertionSort_~j~0#1_104| Int)) (and (or (= |v_ULTIMATE.start_insertionSort_~j~0#1_104| 0) (< (select |#length| |v_ULTIMATE.start_insertionSort_~a#1.base_44|) (* |v_ULTIMATE.start_insertionSort_~j~0#1_104| 4))) (<= 0 |v_ULTIMATE.start_insertionSort_~j~0#1_104|) (<= 2 |v_ULTIMATE.start_insertionSort_~a#1.base_44|))))' at error location [2024-11-02 12:30:04,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:30:04,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:30:04,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2024-11-02 12:30:04,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572287149] [2024-11-02 12:30:04,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:30:04,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:30:04,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:04,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:30:04,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=249, Unknown=3, NotChecked=0, Total=306 [2024-11-02 12:30:04,229 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 12:30:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:04,396 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2024-11-02 12:30:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-02 12:30:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 32 [2024-11-02 12:30:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:04,398 INFO L225 Difference]: With dead ends: 64 [2024-11-02 12:30:04,398 INFO L226 Difference]: Without dead ends: 64 [2024-11-02 12:30:04,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=482, Unknown=3, NotChecked=0, Total=600 [2024-11-02 12:30:04,399 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:04,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 39 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-02 12:30:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2024-11-02 12:30:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 57 states have internal predecessors, (65), 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 12:30:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2024-11-02 12:30:04,403 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 32 [2024-11-02 12:30:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:04,404 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2024-11-02 12:30:04,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 12:30:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2024-11-02 12:30:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:30:04,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:04,406 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-02 12:30:04,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-02 12:30:04,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_613a108c-5884-4c70-8040-3f1e62513b3c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:04,607 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-02 12:30:04,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1462236152, now seen corresponding path program 2 times [2024-11-02 12:30:04,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:04,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731608637] [2024-11-02 12:30:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:04,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat