./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje --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 64bit --witnessprinter.graph.data.programhash d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:00:43,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:00:43,248 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-09 06:00:43,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:00:43,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:00:43,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:00:43,307 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:00:43,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:00:43,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:00:43,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:00:43,309 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:00:43,310 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:00:43,311 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:00:43,312 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:00:43,316 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:00:43,316 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:00:43,317 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:00:43,317 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:00:43,317 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:00:43,317 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:00:43,318 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:00:43,318 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:00:43,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:00:43,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:00:43,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:00:43,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:00:43,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:00:43,323 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:00:43,323 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:00:43,324 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:00:43,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:00:43,324 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:00:43,324 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:00:43,325 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:00:43,325 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:00:43,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:00:43,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:00:43,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:00:43,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:00:43,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:00:43,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:00:43,328 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:00:43,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:00:43,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:00:43,329 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:00:43,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:00:43,330 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_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff [2024-11-09 06:00:43,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:00:43,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:00:43,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:00:43,745 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:00:43,746 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:00:43,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c Unable to find full path for "g++" [2024-11-09 06:00:45,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:00:46,088 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:00:46,089 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2024-11-09 06:00:46,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/data/9b79d5390/5e1d461a66cd4eea95e3e82495bf2aa7/FLAG01b4b7c32 [2024-11-09 06:00:46,121 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/data/9b79d5390/5e1d461a66cd4eea95e3e82495bf2aa7 [2024-11-09 06:00:46,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:00:46,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:00:46,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:00:46,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:00:46,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:00:46,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513c71ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46, skipping insertion in model container [2024-11-09 06:00:46,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:00:46,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:00:46,393 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:00:46,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:00:46,431 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:00:46,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46 WrapperNode [2024-11-09 06:00:46,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:00:46,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:00:46,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:00:46,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:00:46,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,466 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2024-11-09 06:00:46,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:00:46,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:00:46,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:00:46,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:00:46,477 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:00:46,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:00:46,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:00:46,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:00:46,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (1/1) ... [2024-11-09 06:00:46,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:00:46,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:46,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:00:46,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:00:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:00:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:00:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:00:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:00:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:00:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:00:46,637 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:00:46,644 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:00:46,859 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-09 06:00:46,860 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:00:46,895 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:00:46,896 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:00:46,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:00:46 BoogieIcfgContainer [2024-11-09 06:00:46,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:00:46,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:00:46,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:00:46,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:00:46,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:00:46" (1/3) ... [2024-11-09 06:00:46,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6388fcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:46, skipping insertion in model container [2024-11-09 06:00:46,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:46" (2/3) ... [2024-11-09 06:00:46,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6388fcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:46, skipping insertion in model container [2024-11-09 06:00:46,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:00:46" (3/3) ... [2024-11-09 06:00:46,910 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2024-11-09 06:00:46,924 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:00:46,924 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-09 06:00:46,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:00:46,975 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;@43e0552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:00:46,976 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-09 06:00:46,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 23 states have internal predecessors, (29), 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) [2024-11-09 06:00:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:00:46,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:46,986 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:00:46,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:46,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2776683, now seen corresponding path program 1 times [2024-11-09 06:00:47,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:47,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204689294] [2024-11-09 06:00:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:47,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:47,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204689294] [2024-11-09 06:00:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204689294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:00:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:00:47,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 06:00:47,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183661310] [2024-11-09 06:00:47,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:00:47,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:00:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:00:47,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:00:47,307 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:00:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:47,364 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2024-11-09 06:00:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:00:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 06:00:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:47,374 INFO L225 Difference]: With dead ends: 20 [2024-11-09 06:00:47,374 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 06:00:47,376 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 [2024-11-09 06:00:47,380 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:47,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:00:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 06:00:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 06:00:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 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) [2024-11-09 06:00:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-09 06:00:47,413 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 4 [2024-11-09 06:00:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:47,414 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-09 06:00:47,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:00:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-09 06:00:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:00:47,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:47,415 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:00:47,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:00:47,416 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:47,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2776684, now seen corresponding path program 1 times [2024-11-09 06:00:47,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:47,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145490781] [2024-11-09 06:00:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:47,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:47,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145490781] [2024-11-09 06:00:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145490781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:00:47,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:00:47,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 06:00:47,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935848686] [2024-11-09 06:00:47,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:00:47,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:00:47,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:00:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:00:47,550 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:00:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:47,594 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-11-09 06:00:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:00:47,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 06:00:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:47,595 INFO L225 Difference]: With dead ends: 22 [2024-11-09 06:00:47,596 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 06:00:47,596 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 [2024-11-09 06:00:47,597 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:47,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:00:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 06:00:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 06:00:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 21 states have internal predecessors, (26), 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) [2024-11-09 06:00:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-09 06:00:47,603 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2024-11-09 06:00:47,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:47,604 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-09 06:00:47,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:00:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-09 06:00:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:00:47,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:47,605 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 06:00:47,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:00:47,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:47,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1117220718, now seen corresponding path program 1 times [2024-11-09 06:00:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:47,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062495360] [2024-11-09 06:00:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:47,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:47,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062495360] [2024-11-09 06:00:47,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062495360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:00:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454293014] [2024-11-09 06:00:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:47,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:47,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:47,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:47,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:00:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:47,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:00:47,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:47,962 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 [2024-11-09 06:00:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:48,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:48,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454293014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:48,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [44414864] [2024-11-09 06:00:48,294 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-09 06:00:48,295 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:00:48,300 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:00:48,307 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:00:48,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:00:48,716 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:00:48,967 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '160#(and (<= |ULTIMATE.start_main_#t~nondet0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~i~0#1_26| Int) (|v_ULTIMATE.start_main_~#a~0#1.base_30| Int) (|v_ULTIMATE.start_main_~#a~0#1.offset_26| Int)) (and (<= (select |#length| |v_ULTIMATE.start_main_~#a~0#1.base_30|) (+ (* |v_ULTIMATE.start_main_~i~0#1_26| 4) 3)) (<= 1 |#StackHeapBarrier|) (<= 0 |v_ULTIMATE.start_main_~i~0#1_26|) (<= |v_ULTIMATE.start_main_~i~0#1_26| 1047) (= |v_ULTIMATE.start_main_~#a~0#1.offset_26| 0) (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_30|) (= |ULTIMATE.start_main_~k~0#1| 0))) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet0#1|)))' at error location [2024-11-09 06:00:48,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:00:48,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:00:48,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-09 06:00:48,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446083516] [2024-11-09 06:00:48,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:00:48,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:00:48,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:00:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:00:48,971 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:00:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:49,099 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2024-11-09 06:00:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:00:49,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 06:00:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:49,103 INFO L225 Difference]: With dead ends: 31 [2024-11-09 06:00:49,103 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 06:00:49,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:00:49,107 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:49,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:00:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 06:00:49,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-09 06:00:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.5) internal successors, (39), 30 states have internal predecessors, (39), 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) [2024-11-09 06:00:49,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-11-09 06:00:49,115 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 7 [2024-11-09 06:00:49,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:49,116 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-11-09 06:00:49,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:00:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-11-09 06:00:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 06:00:49,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:49,117 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:49,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:00:49,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:49,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:49,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:49,319 INFO L85 PathProgramCache]: Analyzing trace with hash 982996667, now seen corresponding path program 1 times [2024-11-09 06:00:49,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:49,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579927897] [2024-11-09 06:00:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:49,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:00:49,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:49,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579927897] [2024-11-09 06:00:49,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579927897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:00:49,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550071944] [2024-11-09 06:00:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:49,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:49,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:49,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:49,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:00:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:49,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:00:49,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:49,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:49,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550071944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:49,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1544225248] [2024-11-09 06:00:49,623 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 06:00:49,623 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:00:49,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:00:49,624 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:00:49,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:00:49,859 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:00:50,103 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '304#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~#a~0#1.base_31| Int)) (and (<= (select |#length| |v_ULTIMATE.start_main_~#a~0#1.base_31|) 3) (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_31|))))' at error location [2024-11-09 06:00:50,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:00:50,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:00:50,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 9 [2024-11-09 06:00:50,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175435358] [2024-11-09 06:00:50,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:00:50,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:00:50,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:50,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:00:50,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:00:50,107 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 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) [2024-11-09 06:00:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:50,397 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-09 06:00:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:00:50,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 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) Word has length 12 [2024-11-09 06:00:50,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:50,398 INFO L225 Difference]: With dead ends: 43 [2024-11-09 06:00:50,399 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 06:00:50,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:00:50,400 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:50,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:00:50,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 06:00:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-09 06:00:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 41 states have internal predecessors, (49), 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) [2024-11-09 06:00:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-11-09 06:00:50,413 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 12 [2024-11-09 06:00:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:50,413 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-11-09 06:00:50,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 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) [2024-11-09 06:00:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-11-09 06:00:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 06:00:50,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:50,414 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 06:00:50,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:00:50,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:50,616 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:50,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash -159948820, now seen corresponding path program 2 times [2024-11-09 06:00:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445260822] [2024-11-09 06:00:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:50,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:51,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:51,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445260822] [2024-11-09 06:00:51,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445260822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:00:51,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033991329] [2024-11-09 06:00:51,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:00:51,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:51,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:51,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:51,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:00:51,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 06:00:51,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:00:51,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:00:51,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:51,094 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 [2024-11-09 06:00:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 06:00:51,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:00:51,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033991329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:00:51,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:00:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-09 06:00:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156550131] [2024-11-09 06:00:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:00:51,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:00:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:00:51,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:00:51,263 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-09 06:00:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:51,315 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-09 06:00:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:00:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 16 [2024-11-09 06:00:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:51,318 INFO L225 Difference]: With dead ends: 41 [2024-11-09 06:00:51,318 INFO L226 Difference]: Without dead ends: 41 [2024-11-09 06:00:51,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:00:51,319 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:51,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:00:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-09 06:00:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-09 06:00:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2702702702702702) 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) [2024-11-09 06:00:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-09 06:00:51,326 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 16 [2024-11-09 06:00:51,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:51,327 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-09 06:00:51,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-09 06:00:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-09 06:00:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 06:00:51,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:51,328 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:51,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:00:51,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:51,529 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:51,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2093444866, now seen corresponding path program 1 times [2024-11-09 06:00:51,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:51,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616023362] [2024-11-09 06:00:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 06:00:51,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:51,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616023362] [2024-11-09 06:00:51,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616023362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:00:51,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:00:51,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:00:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80893491] [2024-11-09 06:00:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:00:51,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:00:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:51,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:00:51,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:00:51,681 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:00:51,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:51,740 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-09 06:00:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:00:51,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 06:00:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:51,742 INFO L225 Difference]: With dead ends: 44 [2024-11-09 06:00:51,742 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 06:00:51,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:00:51,743 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:51,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:00:51,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 06:00:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2024-11-09 06:00:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 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) [2024-11-09 06:00:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-11-09 06:00:51,755 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 26 [2024-11-09 06:00:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:51,756 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-11-09 06:00:51,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:00:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-11-09 06:00:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:00:51,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:51,759 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:51,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:00:51,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:51,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:51,761 INFO L85 PathProgramCache]: Analyzing trace with hash -476948026, now seen corresponding path program 1 times [2024-11-09 06:00:51,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:51,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95265349] [2024-11-09 06:00:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:51,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:51,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:51,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95265349] [2024-11-09 06:00:51,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95265349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:00:51,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390020751] [2024-11-09 06:00:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:51,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:51,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:51,974 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:51,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:00:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:52,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:00:52,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:52,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390020751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1922405887] [2024-11-09 06:00:52,276 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 06:00:52,276 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:00:52,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:00:52,278 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:00:52,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:00:52,499 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:00:52,924 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '809#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|))) (= |ULTIMATE.start_main_~k~0#1| 0) (exists ((|v_#valid_34| (Array Int Int)) (|v_ULTIMATE.start_main_~#a~0#1.base_32| Int)) (and (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_32|) (= (select |v_#valid_34| |v_ULTIMATE.start_main_~#a~0#1.base_32|) 1) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#a~0#1.base_32|)) (= (store |v_#valid_34| |v_ULTIMATE.start_main_~#a~0#1.base_32| 0) |#valid|) (<= (+ (select (select |#memory_int| |v_ULTIMATE.start_main_~#a~0#1.base_32|) 0) 1) 0))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-09 06:00:52,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:00:52,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:00:52,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-09 06:00:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327148179] [2024-11-09 06:00:52,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:00:52,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 06:00:52,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:52,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 06:00:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=483, Unknown=1, NotChecked=0, Total=650 [2024-11-09 06:00:52,930 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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) [2024-11-09 06:00:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:53,051 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-09 06:00:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 06:00:53,052 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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 [2024-11-09 06:00:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:53,053 INFO L225 Difference]: With dead ends: 65 [2024-11-09 06:00:53,053 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 06:00:53,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=483, Unknown=1, NotChecked=0, Total=650 [2024-11-09 06:00:53,054 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:53,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 74 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:00:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 06:00:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-09 06:00:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 64 states have internal predecessors, (70), 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) [2024-11-09 06:00:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2024-11-09 06:00:53,063 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 27 [2024-11-09 06:00:53,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:53,063 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2024-11-09 06:00:53,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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) [2024-11-09 06:00:53,064 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2024-11-09 06:00:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 06:00:53,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:53,065 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:53,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:53,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:53,266 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:53,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash -966576442, now seen corresponding path program 2 times [2024-11-09 06:00:53,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:53,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041579547] [2024-11-09 06:00:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:53,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:00:53,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041579547] [2024-11-09 06:00:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041579547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:00:53,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584609684] [2024-11-09 06:00:53,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:00:53,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:53,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:53,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:00:53,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:00:53,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:00:53,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:00:53,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:54,129 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#a~0#1.base_33| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_33|) 0) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_33| 0)))) is different from true [2024-11-09 06:00:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-09 06:00:54,132 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:00:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584609684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:00:54,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:00:54,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 18 [2024-11-09 06:00:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105268576] [2024-11-09 06:00:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:00:54,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:00:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:00:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=169, Unknown=1, NotChecked=32, Total=342 [2024-11-09 06:00:54,135 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-11-09 06:00:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:54,158 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2024-11-09 06:00:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:00:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 51 [2024-11-09 06:00:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:54,160 INFO L225 Difference]: With dead ends: 64 [2024-11-09 06:00:54,160 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 06:00:54,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=169, Unknown=1, NotChecked=32, Total=342 [2024-11-09 06:00:54,162 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:54,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2024-11-09 06:00:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 06:00:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-09 06:00:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.11864406779661) internal successors, (66), 61 states have internal predecessors, (66), 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) [2024-11-09 06:00:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2024-11-09 06:00:54,168 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 51 [2024-11-09 06:00:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:54,169 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2024-11-09 06:00:54,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-11-09 06:00:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2024-11-09 06:00:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 06:00:54,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:54,171 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:54,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:00:54,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:54,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:54,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1165657449, now seen corresponding path program 1 times [2024-11-09 06:00:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199131272] [2024-11-09 06:00:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:00:54,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199131272] [2024-11-09 06:00:54,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199131272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:00:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771001177] [2024-11-09 06:00:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:54,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:54,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:54,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:00:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:55,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:00:55,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:00:55,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:00:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771001177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1631667414] [2024-11-09 06:00:55,685 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 06:00:55,685 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:00:55,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:00:55,688 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:00:55,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:00:56,124 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:00:56,868 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1588#(exists ((|v_ULTIMATE.start_main_~k~0#1_29| Int) (|v_ULTIMATE.start_main_~#a~0#1.offset_30| Int) (|v_ULTIMATE.start_main_~#a~0#1.base_34| Int)) (and (<= (select |#length| |v_ULTIMATE.start_main_~#a~0#1.base_34|) (+ 3 |v_ULTIMATE.start_main_~#a~0#1.offset_30| (* 4 |v_ULTIMATE.start_main_~k~0#1_29|))) (or (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~#a~0#1.offset_30| 0) (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_34|) (= |v_ULTIMATE.start_main_~k~0#1_29| 0)) (and (<= 1 |#StackHeapBarrier|) (<= 1 |v_ULTIMATE.start_main_~k~0#1_29|) (= |v_ULTIMATE.start_main_~#a~0#1.offset_30| 0) (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_34|) (<= |v_ULTIMATE.start_main_~k~0#1_29| 1047))) (or (= |v_ULTIMATE.start_main_~k~0#1_29| 0) (exists ((|v_ULTIMATE.start_main_#t~nondet4#1_16| Int)) (and (<= |v_ULTIMATE.start_main_#t~nondet4#1_16| 2147483647) (not (= |v_ULTIMATE.start_main_#t~nondet4#1_16| 0)) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet4#1_16| 2147483648)))))))' at error location [2024-11-09 06:00:56,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:00:56,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:00:56,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-11-09 06:00:56,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202709755] [2024-11-09 06:00:56,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:00:56,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 06:00:56,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 06:00:56,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1229, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 06:00:56,872 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 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) [2024-11-09 06:00:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:57,073 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2024-11-09 06:00:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 06:00:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 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 53 [2024-11-09 06:00:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:57,075 INFO L225 Difference]: With dead ends: 110 [2024-11-09 06:00:57,075 INFO L226 Difference]: Without dead ends: 110 [2024-11-09 06:00:57,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=577, Invalid=1229, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 06:00:57,077 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:57,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 47 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:00:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-09 06:00:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-09 06:00:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.0654205607476634) internal successors, (114), 109 states have internal predecessors, (114), 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) [2024-11-09 06:00:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2024-11-09 06:00:57,083 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 53 [2024-11-09 06:00:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:57,083 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2024-11-09 06:00:57,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 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) [2024-11-09 06:00:57,083 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2024-11-09 06:00:57,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 06:00:57,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:57,086 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:57,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 06:00:57,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:57,289 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 06:00:57,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1548465303, now seen corresponding path program 2 times [2024-11-09 06:00:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417133822] [2024-11-09 06:00:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:57,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:00:58,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417133822] [2024-11-09 06:00:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417133822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:00:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086081956] [2024-11-09 06:00:58,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:00:58,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:58,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:58,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:58,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:00:58,731 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 06:00:58,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:00:58,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:00:58,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:58,755 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 [2024-11-09 06:00:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-11-09 06:00:59,639 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:00:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086081956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:00:59,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:00:59,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [32] total 36 [2024-11-09 06:00:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672466074] [2024-11-09 06:00:59,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:00:59,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:00:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:00:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=791, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 06:00:59,642 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-09 06:00:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:59,744 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2024-11-09 06:00:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:00:59,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 101 [2024-11-09 06:00:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:59,746 INFO L225 Difference]: With dead ends: 110 [2024-11-09 06:00:59,746 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 06:00:59,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=547, Invalid=859, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 06:00:59,747 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:59,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 29 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:00:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 06:00:59,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 06:00:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-09 06:00:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 06:00:59,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2024-11-09 06:00:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:59,753 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 06:00:59,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-09 06:00:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 06:00:59,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 06:00:59,757 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2024-11-09 06:00:59,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-09 06:00:59,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-09 06:00:59,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-09 06:00:59,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-09 06:00:59,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-09 06:00:59,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-09 06:00:59,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-09 06:00:59,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-09 06:00:59,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:59,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 06:00:59,964 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2024-11-09 06:00:59,967 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:00:59,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:00:59 BoogieIcfgContainer [2024-11-09 06:00:59,971 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:00:59,972 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:00:59,972 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:00:59,972 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:00:59,973 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:00:46" (3/4) ... [2024-11-09 06:00:59,976 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 06:00:59,985 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 06:00:59,985 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 06:00:59,985 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 06:00:59,985 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 06:01:00,078 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 06:01:00,078 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 06:01:00,078 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:01:00,079 INFO L158 Benchmark]: Toolchain (without parser) took 13951.36ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 121.7MB in the beginning and 99.6MB in the end (delta: 22.0MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. [2024-11-09 06:01:00,080 INFO L158 Benchmark]: CDTParser took 1.22ms. Allocated memory is still 115.3MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:01:00,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.29ms. Allocated memory is still 151.0MB. Free memory was 122.8MB in the beginning and 111.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 06:01:00,081 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.48ms. Allocated memory is still 151.0MB. Free memory was 111.0MB in the beginning and 109.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:01:00,081 INFO L158 Benchmark]: Boogie Preprocessor took 25.48ms. Allocated memory is still 151.0MB. Free memory was 109.6MB in the beginning and 108.9MB in the end (delta: 674.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:01:00,082 INFO L158 Benchmark]: RCFGBuilder took 403.23ms. Allocated memory is still 151.0MB. Free memory was 108.8MB in the beginning and 113.2MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 06:01:00,082 INFO L158 Benchmark]: TraceAbstraction took 13072.71ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 112.5MB in the beginning and 104.3MB in the end (delta: 8.1MB). Peak memory consumption was 79.4MB. Max. memory is 16.1GB. [2024-11-09 06:01:00,083 INFO L158 Benchmark]: Witness Printer took 106.85ms. Allocated memory is still 220.2MB. Free memory was 104.3MB in the beginning and 99.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 06:01:00,085 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22ms. Allocated memory is still 115.3MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.29ms. Allocated memory is still 151.0MB. Free memory was 122.8MB in the beginning and 111.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.48ms. Allocated memory is still 151.0MB. Free memory was 111.0MB in the beginning and 109.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.48ms. Allocated memory is still 151.0MB. Free memory was 109.6MB in the beginning and 108.9MB in the end (delta: 674.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 403.23ms. Allocated memory is still 151.0MB. Free memory was 108.8MB in the beginning and 113.2MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13072.71ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 112.5MB in the beginning and 104.3MB in the end (delta: 8.1MB). Peak memory consumption was 79.4MB. Max. memory is 16.1GB. * Witness Printer took 106.85ms. Allocated memory is still 220.2MB. Free memory was 104.3MB in the beginning and 99.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 10, TraceHistogramMax: 30, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 322 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 467 IncrementalHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 123 mSDtfsCounter, 467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 550 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=9, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 568 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 646 ConstructedInterpolants, 1 QuantifiedInterpolants, 3931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 587 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 1731/4408 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 06:01:00,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a1b91a-8996-4f7e-ae63-e99bb1f8a8ed/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE