./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-dietlibc/strrchr.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-dietlibc/strrchr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b850f5453e922b3972aa9b5b79a1b07337c08d581cc5e6a2a56803408dc479cf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:30,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:30,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 20:36:30,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:30,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:30,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:30,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:30,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:30,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:30,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:30,955 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:30,957 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:30,957 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:30,959 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:36:30,959 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:30,960 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:30,960 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:36:30,961 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:36:30,961 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:30,962 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:36:30,962 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:36:30,963 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:36:30,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:30,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:36:30,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:36:30,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:30,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:36:30,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:30,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:36:30,967 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:36:30,968 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:36:30,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:36:30,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:30,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:30,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:30,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:30,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:30,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:30,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:30,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:36:30,971 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:36:30,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:36:30,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:30,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:36:30,972 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:30,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:30,973 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_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b850f5453e922b3972aa9b5b79a1b07337c08d581cc5e6a2a56803408dc479cf [2023-11-23 20:36:31,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:31,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:31,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:31,353 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:31,355 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:31,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/termination-dietlibc/strrchr.i [2023-11-23 20:36:34,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:36:35,081 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:36:35,082 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/sv-benchmarks/c/termination-dietlibc/strrchr.i [2023-11-23 20:36:35,102 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/data/858c0d798/97e4b3d8e9054a95a76ad0f5bb15c2c5/FLAG762abe9a9 [2023-11-23 20:36:35,121 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/data/858c0d798/97e4b3d8e9054a95a76ad0f5bb15c2c5 [2023-11-23 20:36:35,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:36:35,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:36:35,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:35,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:36:35,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:36:35,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2823ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35, skipping insertion in model container [2023-11-23 20:36:35,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,211 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:36:35,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:35,647 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:36:35,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:35,731 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:36:35,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35 WrapperNode [2023-11-23 20:36:35,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:35,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:35,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:36:35,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:36:35,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,795 INFO L138 Inliner]: procedures = 114, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2023-11-23 20:36:35,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:35,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:36:35,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:36:35,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:36:35,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:36:35,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:36:35,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:36:35,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:36:35,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (1/1) ... [2023-11-23 20:36:35,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:35,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:35,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:36:35,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:36:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:36:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:36:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:36:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:36:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:36:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:36:36,052 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:36:36,056 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:36:36,362 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:36:36,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:36:36,461 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:36:36,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:36 BoogieIcfgContainer [2023-11-23 20:36:36,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:36:36,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:36:36,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:36:36,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:36:36,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:36:35" (1/3) ... [2023-11-23 20:36:36,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c638253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:36, skipping insertion in model container [2023-11-23 20:36:36,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:35" (2/3) ... [2023-11-23 20:36:36,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c638253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:36, skipping insertion in model container [2023-11-23 20:36:36,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:36" (3/3) ... [2023-11-23 20:36:36,475 INFO L112 eAbstractionObserver]: Analyzing ICFG strrchr.i [2023-11-23 20:36:36,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:36:36,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 20:36:36,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:36:36,561 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45945b4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:36:36,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-23 20:36:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:36:36,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:36,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:36:36,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 20:36:36,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash 127080, now seen corresponding path program 1 times [2023-11-23 20:36:36,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:36,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208777227] [2023-11-23 20:36:36,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:36,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:36,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208777227] [2023-11-23 20:36:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208777227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:36,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:36:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264887827] [2023-11-23 20:36:36,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:36,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:36:36,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:36,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:36:36,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:36,916 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:36,994 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2023-11-23 20:36:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:36:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 20:36:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:37,004 INFO L225 Difference]: With dead ends: 37 [2023-11-23 20:36:37,004 INFO L226 Difference]: Without dead ends: 14 [2023-11-23 20:36:37,008 INFO L412 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 [2023-11-23 20:36:37,012 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:37,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 13 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:36:37,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-23 20:36:37,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-23 20:36:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-23 20:36:37,047 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2023-11-23 20:36:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:37,047 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-23 20:36:37,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-23 20:36:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:36:37,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:37,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:36:37,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:36:37,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 20:36:37,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 3939524, now seen corresponding path program 1 times [2023-11-23 20:36:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671003514] [2023-11-23 20:36:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:37,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:37,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671003514] [2023-11-23 20:36:37,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671003514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:37,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:36:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220599792] [2023-11-23 20:36:37,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:37,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:36:37,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:37,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:36:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:37,095 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:37,109 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-23 20:36:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:36:37,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 20:36:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:37,111 INFO L225 Difference]: With dead ends: 14 [2023-11-23 20:36:37,111 INFO L226 Difference]: Without dead ends: 9 [2023-11-23 20:36:37,111 INFO L412 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 [2023-11-23 20:36:37,113 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:37,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:36:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-23 20:36:37,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-23 20:36:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-23 20:36:37,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2023-11-23 20:36:37,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:37,118 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-23 20:36:37,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-23 20:36:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:36:37,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:37,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:36:37,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:36:37,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 20:36:37,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash -509080649, now seen corresponding path program 1 times [2023-11-23 20:36:37,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:37,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778377035] [2023-11-23 20:36:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:37,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:37,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778377035] [2023-11-23 20:36:37,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778377035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:37,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:37,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:36:37,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468562329] [2023-11-23 20:36:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:37,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:36:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:36:37,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:36:37,230 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:37,270 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-11-23 20:36:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:36:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 20:36:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:37,272 INFO L225 Difference]: With dead ends: 16 [2023-11-23 20:36:37,272 INFO L226 Difference]: Without dead ends: 14 [2023-11-23 20:36:37,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:36:37,274 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:37,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:36:37,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-23 20:36:37,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-23 20:36:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-23 20:36:37,280 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2023-11-23 20:36:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:37,281 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-23 20:36:37,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-23 20:36:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:36:37,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:37,283 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 20:36:37,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:36:37,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 20:36:37,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash -402094059, now seen corresponding path program 1 times [2023-11-23 20:36:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:37,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529694962] [2023-11-23 20:36:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:37,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:37,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:37,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529694962] [2023-11-23 20:36:37,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529694962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:36:37,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579874814] [2023-11-23 20:36:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:37,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:37,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:37,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:37,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:36:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:37,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:36:37,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:37,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:36:37,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579874814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:37,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:36:37,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 20:36:37,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474953974] [2023-11-23 20:36:37,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:37,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:36:37,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:36:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:36:37,643 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:37,678 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-23 20:36:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:36:37,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 20:36:37,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:37,679 INFO L225 Difference]: With dead ends: 14 [2023-11-23 20:36:37,679 INFO L226 Difference]: Without dead ends: 13 [2023-11-23 20:36:37,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 20:36:37,681 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:37,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:36:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-23 20:36:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-23 20:36:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-23 20:36:37,686 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2023-11-23 20:36:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:37,686 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-23 20:36:37,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-23 20:36:37,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:36:37,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:37,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2023-11-23 20:36:37,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:37,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 20:36:37,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash 419986114, now seen corresponding path program 1 times [2023-11-23 20:36:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758341626] [2023-11-23 20:36:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:38,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:38,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758341626] [2023-11-23 20:36:38,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758341626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:36:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231454209] [2023-11-23 20:36:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:38,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:38,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:38,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:38,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:36:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:38,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:36:38,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:38,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231454209] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:38,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1382491748] [2023-11-23 20:36:38,267 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 20:36:38,268 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:36:38,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:36:38,279 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:36:38,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:36:39,360 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:36:40,083 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '304#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~in~0#1.base|) (= |ULTIMATE.start_main_~in~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_#t~malloc15#1.base|) (<= 2 |ULTIMATE.start_main_~in_len~0#1|) (= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (<= 2147483647 |ULTIMATE.start_main_#t~post16#1|))' at error location [2023-11-23 20:36:40,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:36:40,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:36:40,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-23 20:36:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502345657] [2023-11-23 20:36:40,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:36:40,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 20:36:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 20:36:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:36:40,086 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:40,185 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-11-23 20:36:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 20:36:40,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 20:36:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:40,187 INFO L225 Difference]: With dead ends: 29 [2023-11-23 20:36:40,187 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 20:36:40,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-11-23 20:36:40,188 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:40,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:36:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 20:36:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-23 20:36:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-11-23 20:36:40,194 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2023-11-23 20:36:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:40,195 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-11-23 20:36:40,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-11-23 20:36:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 20:36:40,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:40,197 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1] [2023-11-23 20:36:40,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:40,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:40,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 20:36:40,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:40,413 INFO L85 PathProgramCache]: Analyzing trace with hash 300053984, now seen corresponding path program 2 times [2023-11-23 20:36:40,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:40,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760358336] [2023-11-23 20:36:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:40,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:36:40,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760358336] [2023-11-23 20:36:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760358336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:36:40,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804429606] [2023-11-23 20:36:40,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:36:40,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:40,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:40,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:40,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:36:40,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 20:36:40,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:36:40,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:36:40,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 20:36:40,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 20:36:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804429606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:40,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2086864672] [2023-11-23 20:36:40,932 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 20:36:40,932 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:36:40,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:36:40,933 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:36:40,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:36:41,430 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:36:41,659 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '556#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~in~0#1.base|) (= |ULTIMATE.start_main_~in~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_#t~malloc15#1.base|) (<= 2 |ULTIMATE.start_main_~in_len~0#1|) (= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (<= 2147483647 |ULTIMATE.start_main_#t~post16#1|))' at error location [2023-11-23 20:36:41,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:36:41,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:36:41,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 15 [2023-11-23 20:36:41,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626937575] [2023-11-23 20:36:41,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:36:41,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 20:36:41,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 20:36:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-11-23 20:36:41,662 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:41,878 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2023-11-23 20:36:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 20:36:41,879 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-23 20:36:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:41,879 INFO L225 Difference]: With dead ends: 33 [2023-11-23 20:36:41,880 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 20:36:41,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2023-11-23 20:36:41,884 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:41,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:36:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 20:36:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 20:36:41,886 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) [2023-11-23 20:36:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 20:36:41,886 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-11-23 20:36:41,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:41,887 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 20:36:41,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:41,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 20:36:41,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:36:41,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-23 20:36:41,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-23 20:36:41,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-23 20:36:41,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-23 20:36:41,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-23 20:36:41,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-23 20:36:41,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:42,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 20:36:42,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 20:36:42,162 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 523) no Hoare annotation was computed. [2023-11-23 20:36:42,163 INFO L899 garLoopResultBuilder]: For program point L514-3(line 514) no Hoare annotation was computed. [2023-11-23 20:36:42,163 INFO L899 garLoopResultBuilder]: For program point L527(line 527) no Hoare annotation was computed. [2023-11-23 20:36:42,163 INFO L899 garLoopResultBuilder]: For program point L527-1(line 527) no Hoare annotation was computed. [2023-11-23 20:36:42,163 INFO L899 garLoopResultBuilder]: For program point L523-1(line 523) no Hoare annotation was computed. [2023-11-23 20:36:42,163 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 519 530) no Hoare annotation was computed. [2023-11-23 20:36:42,164 INFO L899 garLoopResultBuilder]: For program point L523-2(lines 523 526) no Hoare annotation was computed. [2023-11-23 20:36:42,164 INFO L899 garLoopResultBuilder]: For program point L523-5(line 523) no Hoare annotation was computed. [2023-11-23 20:36:42,164 INFO L899 garLoopResultBuilder]: For program point L523-6(line 523) no Hoare annotation was computed. [2023-11-23 20:36:42,164 INFO L895 garLoopResultBuilder]: At program point L523-7(lines 523 526) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647)) (.cse1 (<= 1 |ULTIMATE.start_main_~in_len~0#1|))) (or (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 .cse1) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1))) [2023-11-23 20:36:42,164 INFO L899 garLoopResultBuilder]: For program point L523-8(lines 523 526) no Hoare annotation was computed. [2023-11-23 20:36:42,165 INFO L899 garLoopResultBuilder]: For program point L515-3(line 515) no Hoare annotation was computed. [2023-11-23 20:36:42,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 523) no Hoare annotation was computed. [2023-11-23 20:36:42,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 527) no Hoare annotation was computed. [2023-11-23 20:36:42,165 INFO L895 garLoopResultBuilder]: At program point L511-2(lines 511 516) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~in_len~0#1|) [2023-11-23 20:36:42,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 523) no Hoare annotation was computed. [2023-11-23 20:36:42,166 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 20:36:42,166 INFO L899 garLoopResultBuilder]: For program point L512-3(line 512) no Hoare annotation was computed. [2023-11-23 20:36:42,166 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 527) no Hoare annotation was computed. [2023-11-23 20:36:42,166 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 20:36:42,166 INFO L899 garLoopResultBuilder]: For program point L521(line 521) no Hoare annotation was computed. [2023-11-23 20:36:42,167 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 523) no Hoare annotation was computed. [2023-11-23 20:36:42,167 INFO L899 garLoopResultBuilder]: For program point L513-3(line 513) no Hoare annotation was computed. [2023-11-23 20:36:42,167 INFO L899 garLoopResultBuilder]: For program point strrchr_returnLabel#1(lines 507 518) no Hoare annotation was computed. [2023-11-23 20:36:42,170 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-23 20:36:42,172 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:36:42,184 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~in_len~0 [2023-11-23 20:36:42,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:36:42 BoogieIcfgContainer [2023-11-23 20:36:42,185 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:36:42,186 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:36:42,186 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:36:42,187 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:36:42,187 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:36" (3/4) ... [2023-11-23 20:36:42,190 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:36:42,201 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-23 20:36:42,202 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 20:36:42,202 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 20:36:42,202 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:36:42,302 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:36:42,303 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 20:36:42,303 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:36:42,304 INFO L158 Benchmark]: Toolchain (without parser) took 7172.40ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 102.3MB in the beginning and 112.4MB in the end (delta: -10.1MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2023-11-23 20:36:42,305 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:42,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.08ms. Allocated memory is still 134.2MB. Free memory was 102.3MB in the beginning and 86.0MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:36:42,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.73ms. Allocated memory is still 134.2MB. Free memory was 86.0MB in the beginning and 83.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:36:42,309 INFO L158 Benchmark]: Boogie Preprocessor took 46.99ms. Allocated memory is still 134.2MB. Free memory was 83.9MB in the beginning and 82.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:36:42,310 INFO L158 Benchmark]: RCFGBuilder took 618.82ms. Allocated memory is still 134.2MB. Free memory was 82.1MB in the beginning and 64.6MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:36:42,310 INFO L158 Benchmark]: TraceAbstraction took 5719.55ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 63.7MB in the beginning and 117.7MB in the end (delta: -54.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:42,311 INFO L158 Benchmark]: Witness Printer took 117.39ms. Allocated memory is still 180.4MB. Free memory was 117.7MB in the beginning and 112.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 20:36:42,313 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.08ms. Allocated memory is still 134.2MB. Free memory was 102.3MB in the beginning and 86.0MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.73ms. Allocated memory is still 134.2MB. Free memory was 86.0MB in the beginning and 83.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.99ms. Allocated memory is still 134.2MB. Free memory was 83.9MB in the beginning and 82.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.82ms. Allocated memory is still 134.2MB. Free memory was 82.1MB in the beginning and 64.6MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5719.55ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 63.7MB in the beginning and 117.7MB in the end (delta: -54.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 117.39ms. Allocated memory is still 180.4MB. Free memory was 117.7MB in the beginning and 112.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~in_len~0 * 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: 523]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 523]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 523]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 523]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 527]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 527]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 32 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=5, InterpolantAutomatonStates: 40, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 24 HoareAnnotationTreeSize, 2 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 407 SizeOfPredicates, 7 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 88/173 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 6 specifications checked. All of them hold - InvariantResult [Line: 523]: Loop Invariant Derived loop invariant: ((((1 <= i) && (in_len <= 2147483647)) && (1 <= in_len)) || (((i == 0) && (in_len <= 2147483647)) && (1 <= in_len))) - InvariantResult [Line: 511]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-23 20:36:42,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5b881d-36de-484b-8424-08376217e83e/bin/utaipan-verify-mE87zJ7Ire/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