./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:33:28,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:33:28,563 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-02 12:33:28,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:33:28,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:33:28,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:33:28,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:33:28,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:33:28,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:33:28,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:33:28,600 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:33:28,600 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:33:28,600 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:33:28,601 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:33:28,601 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:33:28,602 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:33:28,602 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:33:28,603 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:33:28,603 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:33:28,603 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:33:28,604 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:33:28,604 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:33:28,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:33:28,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:33:28,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:33:28,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:33:28,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:33:28,606 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:33:28,606 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:33:28,607 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:33:28,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:33:28,607 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:33:28,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:33:28,608 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:33:28,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:33:28,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:33:28,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:33:28,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:33:28,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:28,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:33:28,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:33:28,611 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:33:28,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:33:28,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:33:28,612 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:33:28,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:33:28,613 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf [2024-11-02 12:33:28,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:33:28,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:33:28,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:33:28,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:33:28,995 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:33:28,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c Unable to find full path for "g++" [2024-11-02 12:33:31,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:33:31,530 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:33:31,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2024-11-02 12:33:31,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/data/8cd76c1be/ce747edddb05494a97e7f1bd298a0021/FLAGb872afed6 [2024-11-02 12:33:31,554 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/data/8cd76c1be/ce747edddb05494a97e7f1bd298a0021 [2024-11-02 12:33:31,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:33:31,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:33:31,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:31,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:33:31,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:33:31,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba50687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31, skipping insertion in model container [2024-11-02 12:33:31,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:31,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:31,826 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:33:31,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:31,873 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:33:31,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31 WrapperNode [2024-11-02 12:33:31,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:31,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:31,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:33:31,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:33:31,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,913 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2024-11-02 12:33:31,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:31,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:33:31,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:33:31,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:33:31,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:33:31,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:33:31,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:33:31,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:33:31,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (1/1) ... [2024-11-02 12:33:31,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:31,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:31,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:33:31,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:33:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:33:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:33:32,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:33:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:33:32,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:33:32,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:33:32,107 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:33:32,110 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:33:32,337 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-02 12:33:32,337 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:33:32,400 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:33:32,400 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:33:32,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:32 BoogieIcfgContainer [2024-11-02 12:33:32,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:33:32,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:33:32,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:33:32,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:33:32,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:33:31" (1/3) ... [2024-11-02 12:33:32,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43eb81d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:32, skipping insertion in model container [2024-11-02 12:33:32,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:31" (2/3) ... [2024-11-02 12:33:32,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43eb81d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:32, skipping insertion in model container [2024-11-02 12:33:32,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:32" (3/3) ... [2024-11-02 12:33:32,415 INFO L112 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2024-11-02 12:33:32,435 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:33:32,436 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-02 12:33:32,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:33:32,506 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;@19db625b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:33:32,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-02 12:33:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:33:32,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:32,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:33:32,522 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-02 12:33:32,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash 78580, now seen corresponding path program 1 times [2024-11-02 12:33:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:32,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101337157] [2024-11-02 12:33:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:32,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:32,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:32,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101337157] [2024-11-02 12:33:32,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101337157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:32,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:32,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:33:32,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440301420] [2024-11-02 12:33:32,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:32,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:32,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:32,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:32,846 INFO L87 Difference]: Start difference. First operand has 19 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:32,910 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-02 12:33:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:32,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:33:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:32,930 INFO L225 Difference]: With dead ends: 22 [2024-11-02 12:33:32,930 INFO L226 Difference]: Without dead ends: 21 [2024-11-02 12:33:32,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:32,938 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:32,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-02 12:33:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-02 12:33:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 10 states have (on average 2.0) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-02 12:33:32,980 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 3 [2024-11-02 12:33:32,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:32,980 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-02 12:33:32,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:32,981 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-02 12:33:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:33:32,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:32,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:33:32,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:33:32,983 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-02 12:33:32,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 77202, now seen corresponding path program 1 times [2024-11-02 12:33:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:32,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795067834] [2024-11-02 12:33:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:33,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:33,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795067834] [2024-11-02 12:33:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795067834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:33,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:33,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:33:33,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444521996] [2024-11-02 12:33:33,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:33,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:33,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:33,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:33,121 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:33,183 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2024-11-02 12:33:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:33,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:33:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:33,185 INFO L225 Difference]: With dead ends: 15 [2024-11-02 12:33:33,185 INFO L226 Difference]: Without dead ends: 15 [2024-11-02 12:33:33,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:33,187 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:33,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:33:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-02 12:33:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-02 12:33:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-02 12:33:33,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 3 [2024-11-02 12:33:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:33,192 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-02 12:33:33,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-02 12:33:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:33:33,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:33,193 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:33:33,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:33:33,196 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-02 12:33:33,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:33,198 INFO L85 PathProgramCache]: Analyzing trace with hash 77203, now seen corresponding path program 1 times [2024-11-02 12:33:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084612027] [2024-11-02 12:33:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:33,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084612027] [2024-11-02 12:33:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084612027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:33,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:33,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:33:33,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40336008] [2024-11-02 12:33:33,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:33,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:33,356 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:33,389 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2024-11-02 12:33:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:33:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:33,390 INFO L225 Difference]: With dead ends: 16 [2024-11-02 12:33:33,391 INFO L226 Difference]: Without dead ends: 16 [2024-11-02 12:33:33,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:33,392 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:33,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-02 12:33:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-02 12:33:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-02 12:33:33,399 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 3 [2024-11-02 12:33:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:33,400 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-02 12:33:33,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-02 12:33:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:33:33,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:33,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:33:33,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:33:33,403 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-02 12:33:33,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:33,407 INFO L85 PathProgramCache]: Analyzing trace with hash 74231263, now seen corresponding path program 1 times [2024-11-02 12:33:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:33,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93623858] [2024-11-02 12:33:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:33,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:33,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:33,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93623858] [2024-11-02 12:33:33,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93623858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:33,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84593083] [2024-11-02 12:33:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:33,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:33,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:33,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:33,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:33:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:33,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:33:33,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:33,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:33,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84593083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:33,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1031811491] [2024-11-02 12:33:33,681 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-02 12:33:33,681 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:33,685 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:33,692 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:33,692 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:34,195 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:34,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '165#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~#a~0#1.base_26| Int)) (and (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_26|) (<= (select |#length| |v_ULTIMATE.start_main_~#a~0#1.base_26|) 15))))' at error location [2024-11-02 12:33:34,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:34,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:34,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-02 12:33:34,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329948063] [2024-11-02 12:33:34,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:34,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:33:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:33:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:33:34,303 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:34,351 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-11-02 12:33:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:33:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-02 12:33:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:34,352 INFO L225 Difference]: With dead ends: 21 [2024-11-02 12:33:34,353 INFO L226 Difference]: Without dead ends: 21 [2024-11-02 12:33:34,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:33:34,358 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:34,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-02 12:33:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-02 12:33:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-02 12:33:34,366 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2024-11-02 12:33:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:34,366 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-02 12:33:34,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-02 12:33:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:33:34,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:34,367 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2024-11-02 12:33:34,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:34,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:34,568 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-02 12:33:34,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 74229885, now seen corresponding path program 1 times [2024-11-02 12:33:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916839258] [2024-11-02 12:33:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:34,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:34,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916839258] [2024-11-02 12:33:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916839258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118551540] [2024-11-02 12:33:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:34,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:34,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:34,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:33:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:34,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:33:34,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:34,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-02 12:33:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:34,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:35,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118551540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:35,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1134059599] [2024-11-02 12:33:35,072 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2024-11-02 12:33:35,073 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:35,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:35,076 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:35,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:35,267 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:37,193 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '244#(exists ((|v_ULTIMATE.start_main_~#a~0#1.base_27| Int) (|v_ULTIMATE.start_main_~i~0#1_41| Int)) (and (<= (select |#length| |v_ULTIMATE.start_main_~#a~0#1.base_27|) (+ (* |v_ULTIMATE.start_main_~i~0#1_41| 4) 3)) (<= 1 |#StackHeapBarrier|) (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_27|) (<= 0 |v_ULTIMATE.start_main_~i~0#1_41|) (<= |ULTIMATE.start_main_#t~nondet0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet0#1|))))' at error location [2024-11-02 12:33:37,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:37,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:37,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-02 12:33:37,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384780984] [2024-11-02 12:33:37,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:37,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:33:37,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:37,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:33:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=100, Unknown=1, NotChecked=0, Total=132 [2024-11-02 12:33:37,197 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:37,331 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2024-11-02 12:33:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:33:37,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-02 12:33:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:37,340 INFO L225 Difference]: With dead ends: 20 [2024-11-02 12:33:37,340 INFO L226 Difference]: Without dead ends: 20 [2024-11-02 12:33:37,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2024-11-02 12:33:37,341 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:37,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:33:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-02 12:33:37,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-02 12:33:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-02 12:33:37,345 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2024-11-02 12:33:37,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:37,346 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-02 12:33:37,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-02 12:33:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:33:37,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:37,347 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2024-11-02 12:33:37,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:33:37,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:37,551 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-02 12:33:37,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash 297742237, now seen corresponding path program 2 times [2024-11-02 12:33:37,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:37,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075877267] [2024-11-02 12:33:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:37,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:33:37,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:37,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075877267] [2024-11-02 12:33:37,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075877267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:37,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:37,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:33:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234265377] [2024-11-02 12:33:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:37,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:37,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:37,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:37,708 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:37,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:37,729 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-11-02 12:33:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:37,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-02 12:33:37,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:37,731 INFO L225 Difference]: With dead ends: 17 [2024-11-02 12:33:37,731 INFO L226 Difference]: Without dead ends: 17 [2024-11-02 12:33:37,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:37,732 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:37,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-02 12:33:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-02 12:33:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-11-02 12:33:37,738 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2024-11-02 12:33:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:37,738 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-11-02 12:33:37,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-11-02 12:33:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 12:33:37,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:37,740 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:37,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:33:37,742 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-02 12:33:37,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash 931486853, now seen corresponding path program 1 times [2024-11-02 12:33:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:37,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018851427] [2024-11-02 12:33:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:37,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:37,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018851427] [2024-11-02 12:33:37,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018851427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:37,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770757354] [2024-11-02 12:33:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:37,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:37,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:37,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:37,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:33:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:37,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:33:37,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:37,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770757354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1343194615] [2024-11-02 12:33:38,026 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-02 12:33:38,026 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:38,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:38,027 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:38,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:38,175 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:38,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '419#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|))) (exists ((|v_ULTIMATE.start_main_~#a~0#1.base_28| Int) (|v_#valid_30| (Array Int Int))) (and (<= 16 (select |#length| |v_ULTIMATE.start_main_~#a~0#1.base_28|)) (= (select |v_#valid_30| |v_ULTIMATE.start_main_~#a~0#1.base_28|) 1) (= (store |v_#valid_30| |v_ULTIMATE.start_main_~#a~0#1.base_28| 0) |#valid|) (<= (+ (select (select |#memory_int| |v_ULTIMATE.start_main_~#a~0#1.base_28|) 12) 1) 0) (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_28|))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-02 12:33:38,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:38,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:38,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-02 12:33:38,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480839859] [2024-11-02 12:33:38,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:38,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:33:38,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:38,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:33:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=281, Unknown=1, NotChecked=0, Total=380 [2024-11-02 12:33:38,377 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:38,426 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-11-02 12:33:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:33:38,427 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-02 12:33:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:38,428 INFO L225 Difference]: With dead ends: 29 [2024-11-02 12:33:38,428 INFO L226 Difference]: Without dead ends: 29 [2024-11-02 12:33:38,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=281, Unknown=1, NotChecked=0, Total=380 [2024-11-02 12:33:38,429 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:38,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-02 12:33:38,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-02 12:33:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2024-11-02 12:33:38,433 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 14 [2024-11-02 12:33:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:38,433 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2024-11-02 12:33:38,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2024-11-02 12:33:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:33:38,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:38,434 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:38,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:38,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-02 12:33:38,635 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-02 12:33:38,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1502348535, now seen corresponding path program 2 times [2024-11-02 12:33:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:38,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408436934] [2024-11-02 12:33:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:38,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:38,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:38,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408436934] [2024-11-02 12:33:38,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408436934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:38,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88843205] [2024-11-02 12:33:38,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:33:38,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:38,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:38,994 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:38,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:33:39,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-02 12:33:39,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:33:39,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 12:33:39,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:39,213 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#a~0#1.base_29| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_29| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_29|) 0))) is different from true [2024-11-02 12:33:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-02 12:33:39,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88843205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:39,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:33:39,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2024-11-02 12:33:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376906919] [2024-11-02 12:33:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:39,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:33:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:33:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=103, Unknown=1, NotChecked=24, Total=210 [2024-11-02 12:33:39,216 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:39,231 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-02 12:33:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:33:39,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-02 12:33:39,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:39,232 INFO L225 Difference]: With dead ends: 28 [2024-11-02 12:33:39,232 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:33:39,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=103, Unknown=1, NotChecked=24, Total=210 [2024-11-02 12:33:39,233 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:39,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2024-11-02 12:33:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:33:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:33:39,234 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) [2024-11-02 12:33:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:33:39,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-11-02 12:33:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:39,236 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:33:39,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:33:39,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:33:39,238 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2024-11-02 12:33:39,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-02 12:33:39,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-02 12:33:39,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-02 12:33:39,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-02 12:33:39,240 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-02 12:33:39,240 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-02 12:33:39,240 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-02 12:33:39,240 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-02 12:33:39,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:39,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:39,448 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-11-02 12:33:39,451 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:33:39,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:33:39 BoogieIcfgContainer [2024-11-02 12:33:39,455 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:33:39,456 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:33:39,456 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:33:39,456 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:33:39,457 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:32" (3/4) ... [2024-11-02 12:33:39,460 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:33:39,468 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-02 12:33:39,469 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-02 12:33:39,469 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-02 12:33:39,469 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:33:39,535 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:33:39,535 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:33:39,535 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:33:39,536 INFO L158 Benchmark]: Toolchain (without parser) took 7978.20ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 116.3MB in the beginning and 127.3MB in the end (delta: -11.0MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2024-11-02 12:33:39,536 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:39,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.20ms. Allocated memory is still 153.1MB. Free memory was 116.0MB in the beginning and 104.2MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 12:33:39,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.07ms. Allocated memory is still 153.1MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:33:39,537 INFO L158 Benchmark]: Boogie Preprocessor took 26.91ms. Allocated memory is still 153.1MB. Free memory was 102.7MB in the beginning and 101.8MB in the end (delta: 916.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:39,537 INFO L158 Benchmark]: RCFGBuilder took 454.31ms. Allocated memory is still 153.1MB. Free memory was 101.6MB in the beginning and 89.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:33:39,538 INFO L158 Benchmark]: TraceAbstraction took 7050.27ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 88.7MB in the beginning and 131.5MB in the end (delta: -42.8MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2024-11-02 12:33:39,538 INFO L158 Benchmark]: Witness Printer took 79.58ms. Allocated memory is still 207.6MB. Free memory was 131.5MB in the beginning and 127.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:33:39,540 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.20ms. Allocated memory is still 153.1MB. Free memory was 116.0MB in the beginning and 104.2MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.07ms. Allocated memory is still 153.1MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.91ms. Allocated memory is still 153.1MB. Free memory was 102.7MB in the beginning and 101.8MB in the end (delta: 916.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 454.31ms. Allocated memory is still 153.1MB. Free memory was 101.6MB in the beginning and 89.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7050.27ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 88.7MB in the beginning and 131.5MB in the end (delta: -42.8MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Witness Printer took 79.58ms. Allocated memory is still 207.6MB. Free memory was 131.5MB in the beginning and 127.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 9 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160 IncrementalHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 58 mSDtfsCounter, 160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=7, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 120 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 129 ConstructedInterpolants, 1 QuantifiedInterpolants, 840 SizeOfPredicates, 0 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 116/273 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-02 12:33:39,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75d6a-74bc-40f5-9a3b-2e793d19b0d9/bin/utaipan-verify-DbMuA5NWw2/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