./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:52:28,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:52:28,454 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 04:52:28,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:52:28,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:52:28,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:52:28,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:52:28,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:52:28,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:52:28,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:52:28,488 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:52:28,489 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:52:28,489 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:52:28,489 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:52:28,489 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:52:28,489 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:52:28,489 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:52:28,490 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:52:28,490 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:52:28,490 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:52:28,490 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:52:28,490 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:52:28,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:52:28,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:52:28,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:52:28,491 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:52:28,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:52:28,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:52:28,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:52:28,492 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:52:28,492 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:52:28,493 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:52:28,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:52:28,493 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:52:28,493 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:52:28,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:52:28,493 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:52:28,494 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:52:28,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:52:28,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:52:28,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:52:28,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:52:28,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:52:28,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:52:28,494 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:52:28,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:52:28,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:52:28,495 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:52:28,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:52:28,495 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 [2024-11-14 04:52:28,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:52:28,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:52:28,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:52:28,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:52:28,895 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:52:28,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i Unable to find full path for "g++" [2024-11-14 04:52:31,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:52:31,493 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:52:31,496 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2024-11-14 04:52:31,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/data/96a907b55/29246c13a74d4f99aeefa8e38493d84b/FLAG91ce1843c [2024-11-14 04:52:31,535 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/data/96a907b55/29246c13a74d4f99aeefa8e38493d84b [2024-11-14 04:52:31,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:52:31,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:52:31,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:52:31,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:52:31,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:52:31,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:52:31" (1/1) ... [2024-11-14 04:52:31,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a42156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:31, skipping insertion in model container [2024-11-14 04:52:31,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:52:31" (1/1) ... [2024-11-14 04:52:31,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:52:31,922 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:52:31,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:52:31,947 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:52:31,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:52:32,018 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:52:32,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32 WrapperNode [2024-11-14 04:52:32,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:52:32,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:52:32,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:52:32,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:52:32,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,058 INFO L138 Inliner]: procedures = 114, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2024-11-14 04:52:32,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:52:32,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:52:32,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:52:32,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:52:32,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:52:32,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:52:32,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:52:32,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:52:32,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (1/1) ... [2024-11-14 04:52:32,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:52:32,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:52:32,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:52:32,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:52:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2024-11-14 04:52:32,154 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2024-11-14 04:52:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:52:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:52:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:52:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:52:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:52:32,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:52:32,263 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:52:32,266 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:52:32,444 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-14 04:52:32,444 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:52:32,474 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:52:32,474 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:52:32,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:52:32 BoogieIcfgContainer [2024-11-14 04:52:32,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:52:32,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:52:32,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:52:32,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:52:32,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:52:31" (1/3) ... [2024-11-14 04:52:32,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b67db17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:52:32, skipping insertion in model container [2024-11-14 04:52:32,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:52:32" (2/3) ... [2024-11-14 04:52:32,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b67db17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:52:32, skipping insertion in model container [2024-11-14 04:52:32,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:52:32" (3/3) ... [2024-11-14 04:52:32,486 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2024-11-14 04:52:32,504 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:52:32,506 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll_shallow_copy-1.i that has 2 procedures, 35 locations, 1 initial locations, 0 loop locations, and 15 error locations. [2024-11-14 04:52:32,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:52:32,579 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;@246f1583, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:52:32,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-14 04:52:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 16 states have (on average 2.0) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:52:32,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:32,593 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:52:32,593 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 04:52:32,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1582549080, now seen corresponding path program 1 times [2024-11-14 04:52:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574194502] [2024-11-14 04:52:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:52:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:33,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:33,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574194502] [2024-11-14 04:52:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574194502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347831099] [2024-11-14 04:52:33,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:33,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:52:33,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:52:33,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:52:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:52:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:33,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:52:33,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:52:33,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 04:52:33,545 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |alloc_node_~temp~0#1.base| (select |c_#valid| |alloc_node_~temp~0#1.base|))) (= (select |c_old(#valid)| |alloc_node_~temp~0#1.base|) 0))) is different from true [2024-11-14 04:52:33,609 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:52:33,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 04:52:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-14 04:52:33,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:52:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347831099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370858683] [2024-11-14 04:52:33,753 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 04:52:33,753 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:52:33,758 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:52:33,763 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:52:33,764 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:52:34,118 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_node with input of size 36 for LOIs [2024-11-14 04:52:34,217 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:52:37,074 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '85#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~s~0#1.base_30| Int)) (and (not (= 1 (select |#valid| |v_ULTIMATE.start_main_~s~0#1.base_30|))) (or (and (exists ((|v_#valid_45| (Array Int Int))) (= (select |v_#valid_45| |v_ULTIMATE.start_main_~s~0#1.base_30|) 0)) (exists ((|v_#length_25| (Array Int Int))) (= |#length| (store |v_#length_25| |ULTIMATE.start_main_#t~ret4#1.base| 4))) (not (= |v_ULTIMATE.start_main_~s~0#1.base_30| 0)) (<= (+ |ULTIMATE.start_main_#t~ret4#1.base| 1) |#StackHeapBarrier|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (<= (+ |v_ULTIMATE.start_main_~s~0#1.base_30| 1) |#StackHeapBarrier|) (exists ((|v_#valid_43| (Array Int Int))) (and (= (store |v_#valid_43| |ULTIMATE.start_main_#t~ret4#1.base| 1) |#valid|) (= (select |v_#valid_43| |ULTIMATE.start_main_#t~ret4#1.base|) 0))) (not (= |ULTIMATE.start_main_#t~ret4#1.base| 0))) (and (exists ((|v_#valid_44| (Array Int Int))) (= (select |v_#valid_44| |v_ULTIMATE.start_main_~s~0#1.base_30|) 0)) (exists ((|v_#length_25| (Array Int Int))) (= |#length| (store |v_#length_25| |ULTIMATE.start_main_#t~ret4#1.base| 4))) (not (= |v_ULTIMATE.start_main_~s~0#1.base_30| 0)) (<= (+ |ULTIMATE.start_main_#t~ret4#1.base| 1) |#StackHeapBarrier|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (<= (+ |v_ULTIMATE.start_main_~s~0#1.base_30| 1) |#StackHeapBarrier|) (exists ((|v_#valid_43| (Array Int Int))) (and (= (store |v_#valid_43| |ULTIMATE.start_main_#t~ret4#1.base| 1) |#valid|) (= (select |v_#valid_43| |ULTIMATE.start_main_#t~ret4#1.base|) 0))) (not (= |ULTIMATE.start_main_#t~ret4#1.base| 0)))))) (= |ULTIMATE.start_main_#t~ret4#1.offset| 0) (= |ULTIMATE.start_main_~s~0#1.offset| 0))' at error location [2024-11-14 04:52:37,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:52:37,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:52:37,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2024-11-14 04:52:37,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035694623] [2024-11-14 04:52:37,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:52:37,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:52:37,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:52:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=259, Unknown=2, NotChecked=32, Total=342 [2024-11-14 04:52:37,107 INFO L87 Difference]: Start difference. First operand has 35 states, 16 states have (on average 2.0) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:52:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:52:37,404 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2024-11-14 04:52:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:52:37,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 11 [2024-11-14 04:52:37,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:52:37,417 INFO L225 Difference]: With dead ends: 30 [2024-11-14 04:52:37,417 INFO L226 Difference]: Without dead ends: 28 [2024-11-14 04:52:37,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=60, Invalid=322, Unknown=2, NotChecked=36, Total=420 [2024-11-14 04:52:37,424 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:52:37,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 56 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2024-11-14 04:52:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-14 04:52:37,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-14 04:52:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.6) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2024-11-14 04:52:37,468 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 11 [2024-11-14 04:52:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:52:37,470 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2024-11-14 04:52:37,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:52:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2024-11-14 04:52:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:52:37,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:37,472 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:52:37,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:52:37,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-14 04:52:37,673 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 04:52:37,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1582549081, now seen corresponding path program 1 times [2024-11-14 04:52:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:37,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210352281] [2024-11-14 04:52:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:52:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:38,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210352281] [2024-11-14 04:52:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210352281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148900032] [2024-11-14 04:52:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:38,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:52:38,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:52:38,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:52:38,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:52:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:38,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 04:52:38,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:52:38,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 04:52:38,298 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 [2024-11-14 04:52:38,503 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |alloc_node_~temp~0#1.base| (select |c_#length| |alloc_node_~temp~0#1.base|)) |c_#length|) (= (select |c_old(#valid)| |alloc_node_~temp~0#1.base|) 0))) is different from true [2024-11-14 04:52:38,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:52:38,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 04:52:38,541 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 04:52:38,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 04:52:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-14 04:52:38,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:52:38,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148900032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:38,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1979458834] [2024-11-14 04:52:38,733 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 04:52:38,733 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:52:38,734 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:52:38,734 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:52:38,734 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:52:38,904 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_node with input of size 36 for LOIs [2024-11-14 04:52:38,961 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:52:40,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '209#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~ret4#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~s~0#1.base_31| Int)) (and (or (and (<= (+ |v_ULTIMATE.start_main_~s~0#1.base_31| 1) |#StackHeapBarrier|) (exists ((|v_#length_37| (Array Int Int))) (= (store |v_#length_37| |ULTIMATE.start_main_#t~ret4#1.base| 4) |#length|)) (not (= |v_ULTIMATE.start_main_~s~0#1.base_31| 0)) (exists ((|v_#valid_54| (Array Int Int))) (= (select |v_#valid_54| |v_ULTIMATE.start_main_~s~0#1.base_31|) 0)) (exists ((|v_#valid_55| (Array Int Int))) (and (= (select |v_#valid_55| |ULTIMATE.start_main_#t~ret4#1.base|) 0) (= (store |v_#valid_55| |ULTIMATE.start_main_#t~ret4#1.base| 1) |#valid|))) (<= (+ |ULTIMATE.start_main_#t~ret4#1.base| 1) |#StackHeapBarrier|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (not (= |ULTIMATE.start_main_#t~ret4#1.base| 0))) (and (<= (+ |v_ULTIMATE.start_main_~s~0#1.base_31| 1) |#StackHeapBarrier|) (exists ((|v_#length_37| (Array Int Int))) (= (store |v_#length_37| |ULTIMATE.start_main_#t~ret4#1.base| 4) |#length|)) (exists ((|v_#valid_56| (Array Int Int))) (and (= (store |v_#valid_56| |ULTIMATE.start_main_#t~ret4#1.base| 1) |#valid|) (= (select |v_#valid_56| |ULTIMATE.start_main_#t~ret4#1.base|) 0))) (not (= |v_ULTIMATE.start_main_~s~0#1.base_31| 0)) (exists ((|v_#valid_54| (Array Int Int))) (= (select |v_#valid_54| |v_ULTIMATE.start_main_~s~0#1.base_31|) 0)) (<= (+ |ULTIMATE.start_main_#t~ret4#1.base| 1) |#StackHeapBarrier|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (not (= |ULTIMATE.start_main_#t~ret4#1.base| 0)))) (<= (select |#length| |v_ULTIMATE.start_main_~s~0#1.base_31|) 3))))' at error location [2024-11-14 04:52:40,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:52:40,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:52:40,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-14 04:52:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514155156] [2024-11-14 04:52:40,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:52:40,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:52:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:40,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:52:40,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=527, Unknown=1, NotChecked=46, Total=650 [2024-11-14 04:52:40,016 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:52:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:52:40,437 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2024-11-14 04:52:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:52:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 11 [2024-11-14 04:52:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:52:40,439 INFO L225 Difference]: With dead ends: 23 [2024-11-14 04:52:40,439 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 04:52:40,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=713, Unknown=1, NotChecked=54, Total=870 [2024-11-14 04:52:40,440 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:52:40,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 116 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2024-11-14 04:52:40,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 04:52:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-14 04:52:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-11-14 04:52:40,448 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2024-11-14 04:52:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:52:40,449 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2024-11-14 04:52:40,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:52:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-11-14 04:52:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 04:52:40,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:40,450 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:52:40,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:52:40,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:52:40,651 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 04:52:40,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash -870727423, now seen corresponding path program 1 times [2024-11-14 04:52:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:40,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224687876] [2024-11-14 04:52:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:40,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:52:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:52:40,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:40,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224687876] [2024-11-14 04:52:40,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224687876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:40,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719705994] [2024-11-14 04:52:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:40,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:52:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:52:40,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:52:40,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:52:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:40,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:52:40,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:52:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:52:40,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:52:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:52:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719705994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:52:41,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [447179580] [2024-11-14 04:52:41,061 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-14 04:52:41,062 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:52:41,063 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:52:41,063 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:52:41,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:52:41,360 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_node with input of size 36 for LOIs [2024-11-14 04:52:41,390 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:52:42,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [447179580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:52:42,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:52:42,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5, 5] total 16 [2024-11-14 04:52:42,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301623702] [2024-11-14 04:52:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:52:42,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:52:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:52:42,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:52:42,751 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:44,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:52:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:52:45,560 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2024-11-14 04:52:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 04:52:45,562 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-14 04:52:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:52:45,562 INFO L225 Difference]: With dead ends: 22 [2024-11-14 04:52:45,562 INFO L226 Difference]: Without dead ends: 22 [2024-11-14 04:52:45,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:52:45,564 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:52:45,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 04:52:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-14 04:52:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-14 04:52:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-11-14 04:52:45,570 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2024-11-14 04:52:45,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:52:45,571 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-11-14 04:52:45,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-11-14 04:52:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 04:52:45,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:45,573 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:52:45,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:52:45,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:52:45,777 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 04:52:45,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash 749571011, now seen corresponding path program 1 times [2024-11-14 04:52:45,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:45,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837931843] [2024-11-14 04:52:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:45,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:52:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:52:46,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:46,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837931843] [2024-11-14 04:52:46,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837931843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:52:46,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:52:46,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:52:46,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513483737] [2024-11-14 04:52:46,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:52:46,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:52:46,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:46,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:52:46,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:52:46,041 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:52:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:52:46,114 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2024-11-14 04:52:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:52:46,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-14 04:52:46,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:52:46,117 INFO L225 Difference]: With dead ends: 21 [2024-11-14 04:52:46,117 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 04:52:46,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:52:46,118 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:52:46,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:52:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 04:52:46,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-14 04:52:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-11-14 04:52:46,126 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2024-11-14 04:52:46,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:52:46,126 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-11-14 04:52:46,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:52:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-11-14 04:52:46,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 04:52:46,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:46,127 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:52:46,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:52:46,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 04:52:46,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1761864921, now seen corresponding path program 1 times [2024-11-14 04:52:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:46,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105841867] [2024-11-14 04:52:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:46,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:52:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:52:46,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:46,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105841867] [2024-11-14 04:52:46,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105841867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:52:46,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:52:46,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:52:46,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334826972] [2024-11-14 04:52:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:52:46,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:52:46,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:46,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:52:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:52:46,453 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:52:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:52:46,579 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2024-11-14 04:52:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:52:46,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-14 04:52:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:52:46,581 INFO L225 Difference]: With dead ends: 20 [2024-11-14 04:52:46,581 INFO L226 Difference]: Without dead ends: 20 [2024-11-14 04:52:46,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:52:46,582 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:52:46,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:52:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-14 04:52:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-14 04:52:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2024-11-14 04:52:46,591 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2024-11-14 04:52:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:52:46,591 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2024-11-14 04:52:46,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:52:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2024-11-14 04:52:46,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 04:52:46,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:46,592 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:52:46,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:52:46,592 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 04:52:46,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1216762235, now seen corresponding path program 1 times [2024-11-14 04:52:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:46,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657109512] [2024-11-14 04:52:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:46,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:52:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:47,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:47,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657109512] [2024-11-14 04:52:47,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657109512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:52:47,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:52:47,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-14 04:52:47,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501946585] [2024-11-14 04:52:47,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:52:47,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 04:52:47,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:47,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 04:52:47,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-14 04:52:47,076 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:52:47,294 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2024-11-14 04:52:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 04:52:47,295 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-14 04:52:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:52:47,296 INFO L225 Difference]: With dead ends: 19 [2024-11-14 04:52:47,296 INFO L226 Difference]: Without dead ends: 19 [2024-11-14 04:52:47,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:52:47,297 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:52:47,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 25 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:52:47,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-14 04:52:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-14 04:52:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-11-14 04:52:47,300 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 20 [2024-11-14 04:52:47,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:52:47,301 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-11-14 04:52:47,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:52:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-11-14 04:52:47,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:52:47,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:47,302 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:52:47,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:52:47,302 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 04:52:47,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:47,302 INFO L85 PathProgramCache]: Analyzing trace with hash 935076444, now seen corresponding path program 1 times [2024-11-14 04:52:47,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899316925] [2024-11-14 04:52:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:52:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:52:48,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899316925] [2024-11-14 04:52:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899316925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:48,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930062775] [2024-11-14 04:52:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:48,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:52:48,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:52:48,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:52:48,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:52:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:48,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 04:52:48,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:52:48,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:52:48,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2024-11-14 04:52:48,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-14 04:52:48,383 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 04:52:48,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 36 [2024-11-14 04:52:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:52:48,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:52:48,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930062775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1645749012] [2024-11-14 04:52:48,843 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-14 04:52:48,843 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:52:48,846 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:52:48,847 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:52:48,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:52:49,221 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_node with input of size 36 for LOIs [2024-11-14 04:52:49,253 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:53:04,074 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '710#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int)) (|v_#valid_86| (Array Int Int)) (|v_#memory_$Pointer$.offset_23| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~s~0#1.base_35| Int) (|v_#memory_$Pointer$.base_26| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_25| (Array Int (Array Int Int)))) (and (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_23| |v_ULTIMATE.start_main_~s~0#1.base_35| (store (select |v_#memory_$Pointer$.offset_23| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0 0))) (<= (+ |v_ULTIMATE.start_main_~s~0#1.base_35| 1) |#StackHeapBarrier|) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35| (store (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0 (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0)))) (= (select |v_#valid_86| |v_ULTIMATE.start_main_~s~0#1.base_35|) 1) (= (store |v_#memory_$Pointer$.base_25| |v_ULTIMATE.start_main_~s~0#1.base_35| (store (select |v_#memory_$Pointer$.base_25| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0 (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0))) |v_#memory_$Pointer$.base_26|) (<= (+ (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0) 1) |#StackHeapBarrier|) (or (and (exists ((|v_#valid_83| (Array Int Int))) (= 0 (select |v_#valid_83| |v_ULTIMATE.start_main_~s~0#1.base_35|))) (= (select |v_ULTIMATE.start_main_old_#valid#1_10| 0) 0) (not (= (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0) 0)) (not (= |v_ULTIMATE.start_main_~s~0#1.base_35| 0)) (exists ((|v_#valid_84| (Array Int Int))) (and (= (store |v_#valid_84| (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0) 1) |v_#valid_86|) (= (select |v_#valid_84| (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0)) 0))) (exists ((|v_#length_59| (Array Int Int))) (= (store |v_#length_59| (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0) 4) |#length|))) (and (= (select |v_ULTIMATE.start_main_old_#valid#1_10| 0) 0) (exists ((|v_#valid_85| (Array Int Int))) (= (select |v_#valid_85| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0)) (not (= (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0) 0)) (exists ((|v_#length_60| (Array Int Int))) (= |#length| (store |v_#length_60| (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0) 4))) (not (= |v_ULTIMATE.start_main_~s~0#1.base_35| 0)) (exists ((|v_#valid_83| (Array Int Int))) (and (= (store |v_#valid_83| (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0) 1) |v_#valid_86|) (= (select |v_#valid_83| (select (select |v_#memory_$Pointer$.base_26| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0)) 0))))) (<= 4 (select |#length| |v_ULTIMATE.start_main_~s~0#1.base_35|)) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|)) (= (select (store |v_#valid_86| |v_ULTIMATE.start_main_~s~0#1.base_35| 0) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0)) 1) (= (store (store |v_#valid_86| |v_ULTIMATE.start_main_~s~0#1.base_35| 0) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~s~0#1.base_35|) 0) 0) |#valid|))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-14 04:53:04,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:53:04,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:53:04,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 19 [2024-11-14 04:53:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353993387] [2024-11-14 04:53:04,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:53:04,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:53:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:53:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:53:04,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1526, Unknown=4, NotChecked=0, Total=1640 [2024-11-14 04:53:04,077 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 21 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:53:04,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:53:04,414 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2024-11-14 04:53:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:53:04,414 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-14 04:53:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:53:04,415 INFO L225 Difference]: With dead ends: 18 [2024-11-14 04:53:04,415 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:53:04,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=118, Invalid=1600, Unknown=4, NotChecked=0, Total=1722 [2024-11-14 04:53:04,416 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:53:04,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:53:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:53:04,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:53:04,420 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) [2024-11-14 04:53:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:53:04,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-11-14 04:53:04,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:53:04,420 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:53:04,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:53:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:53:04,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:53:04,423 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2024-11-14 04:53:04,424 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2024-11-14 04:53:04,424 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2024-11-14 04:53:04,424 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2024-11-14 04:53:04,424 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-14 04:53:04,424 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-14 04:53:04,424 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-11-14 04:53:04,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-14 04:53:04,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (6 of 15 remaining) [2024-11-14 04:53:04,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (5 of 15 remaining) [2024-11-14 04:53:04,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (4 of 15 remaining) [2024-11-14 04:53:04,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (3 of 15 remaining) [2024-11-14 04:53:04,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (2 of 15 remaining) [2024-11-14 04:53:04,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (1 of 15 remaining) [2024-11-14 04:53:04,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-11-14 04:53:04,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:53:04,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:53:04,634 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:53:04,636 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:53:04,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:53:04 BoogieIcfgContainer [2024-11-14 04:53:04,640 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:53:04,641 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:53:04,641 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:53:04,641 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:53:04,642 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:52:32" (3/4) ... [2024-11-14 04:53:04,644 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:53:04,648 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_node [2024-11-14 04:53:04,653 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-14 04:53:04,653 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-14 04:53:04,653 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-14 04:53:04,653 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:53:04,744 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:53:04,744 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:53:04,744 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:53:04,746 INFO L158 Benchmark]: Toolchain (without parser) took 33205.97ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 117.5MB in the beginning and 370.4MB in the end (delta: -252.9MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2024-11-14 04:53:04,746 INFO L158 Benchmark]: CDTParser took 1.25ms. Allocated memory is still 142.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:53:04,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.70ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 101.4MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:53:04,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.96ms. Allocated memory is still 142.6MB. Free memory was 101.4MB in the beginning and 100.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:53:04,747 INFO L158 Benchmark]: Boogie Preprocessor took 23.17ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 99.0MB in the end (delta: 824.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:53:04,747 INFO L158 Benchmark]: RCFGBuilder took 391.92ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 85.3MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:53:04,748 INFO L158 Benchmark]: TraceAbstraction took 32162.49ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 84.8MB in the beginning and 377.8MB in the end (delta: -293.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:53:04,748 INFO L158 Benchmark]: Witness Printer took 103.72ms. Allocated memory is still 411.0MB. Free memory was 377.8MB in the beginning and 370.4MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:53:04,750 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.25ms. Allocated memory is still 142.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.70ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 101.4MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.96ms. Allocated memory is still 142.6MB. Free memory was 101.4MB in the beginning and 100.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.17ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 99.0MB in the end (delta: 824.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.92ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 85.3MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 32162.49ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 84.8MB in the beginning and 377.8MB in the end (delta: -293.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 103.72ms. Allocated memory is still 411.0MB. Free memory was 377.8MB in the beginning and 370.4MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. 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: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 568]: 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 2 procedures, 35 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 32.1s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 365 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 50 IncrementalHoareTripleChecker+Unchecked, 300 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1106 IncrementalHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 65 mSDtfsCounter, 1106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 84 SyntacticMatches, 11 SemanticMatches, 134 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 21.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 75, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 179 ConstructedInterpolants, 8 QuantifiedInterpolants, 1275 SizeOfPredicates, 4 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 19/36 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: OVERALL_TIME: 0.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 14, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 12, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 6, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 22, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 36, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 14, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 123, DAG_COMPRESSION_RETAINED_NODES: 38, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-14 04:53:04,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c71203a-580a-40cf-b5ca-27323fa60064/bin/utaipan-verify-sOmjnqqW8E/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