./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-15/array19_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-15/array19_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5 --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 aa6cff6feccdb2381551a0fc75acd9b1bca020b197764a63cc88475a7ca62ebf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:04:05,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:04:05,951 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-21 19:04:05,957 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:04:05,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:04:05,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:04:05,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:04:05,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:04:05,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:04:05,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:04:05,987 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:04:05,988 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:04:05,988 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:04:05,989 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:04:05,989 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:04:05,990 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:04:05,990 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:04:05,991 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:04:05,991 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:04:05,992 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:04:05,992 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:04:05,993 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:04:05,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:04:05,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:04:05,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:04:05,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:04:05,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:04:05,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:04:05,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:04:05,997 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 19:04:05,997 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:04:05,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:04:05,998 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:04:05,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:04:05,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:04:05,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:04:05,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:04:06,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:04:06,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:04:06,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:04:06,000 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:04:06,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:04:06,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:04:06,002 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:04:06,002 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:04:06,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:04:06,003 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_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa6cff6feccdb2381551a0fc75acd9b1bca020b197764a63cc88475a7ca62ebf [2023-11-21 19:04:06,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:04:06,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:04:06,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:04:06,276 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:04:06,277 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:04:06,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/termination-15/array19_alloca.i [2023-11-21 19:04:09,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:04:09,788 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:04:09,793 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/sv-benchmarks/c/termination-15/array19_alloca.i [2023-11-21 19:04:09,806 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/data/4bc2ee949/23548cfc77e9468db8de1fdb97238323/FLAGc3de346fe [2023-11-21 19:04:09,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/data/4bc2ee949/23548cfc77e9468db8de1fdb97238323 [2023-11-21 19:04:09,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:04:09,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:04:09,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:04:09,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:04:09,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:04:09,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:04:09" (1/1) ... [2023-11-21 19:04:09,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5bcb17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:09, skipping insertion in model container [2023-11-21 19:04:09,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:04:09" (1/1) ... [2023-11-21 19:04:09,875 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:04:10,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:04:10,321 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:04:10,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:04:10,436 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:04:10,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10 WrapperNode [2023-11-21 19:04:10,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:04:10,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:04:10,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:04:10,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:04:10,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,477 INFO L138 Inliner]: procedures = 151, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2023-11-21 19:04:10,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:04:10,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:04:10,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:04:10,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:04:10,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:04:10,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:04:10,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:04:10,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:04:10,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:04:10,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:10,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:04:10,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:04:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:04:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:04:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:04:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:04:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:04:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:04:10,687 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:04:10,690 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:04:10,827 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:04:10,886 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:04:10,886 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:04:10,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:04:10 BoogieIcfgContainer [2023-11-21 19:04:10,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:04:10,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:04:10,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:04:10,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:04:10,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:04:09" (1/3) ... [2023-11-21 19:04:10,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f50649c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:04:10, skipping insertion in model container [2023-11-21 19:04:10,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (2/3) ... [2023-11-21 19:04:10,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f50649c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:04:10, skipping insertion in model container [2023-11-21 19:04:10,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:04:10" (3/3) ... [2023-11-21 19:04:10,925 INFO L112 eAbstractionObserver]: Analyzing ICFG array19_alloca.i [2023-11-21 19:04:10,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:04:10,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-21 19:04:10,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:04:11,006 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;@4fdd93c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:04:11,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-21 19:04:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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) [2023-11-21 19:04:11,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:04:11,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:11,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:04:11,019 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)] === [2023-11-21 19:04:11,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2904973, now seen corresponding path program 1 times [2023-11-21 19:04:11,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:11,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162992920] [2023-11-21 19:04:11,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:11,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:11,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162992920] [2023-11-21 19:04:11,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162992920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:11,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:04:11,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:04:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572068657] [2023-11-21 19:04:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:11,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:04:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:11,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:04:11,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:04:11,310 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2023-11-21 19:04:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:11,392 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-11-21 19:04:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:04:11,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2023-11-21 19:04:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:11,402 INFO L225 Difference]: With dead ends: 33 [2023-11-21 19:04:11,403 INFO L226 Difference]: Without dead ends: 28 [2023-11-21 19:04:11,405 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 [2023-11-21 19:04:11,409 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:11,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 37 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:04:11,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-21 19:04:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2023-11-21 19:04:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6153846153846154) 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) [2023-11-21 19:04:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-21 19:04:11,445 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2023-11-21 19:04:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:11,446 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-21 19:04:11,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2023-11-21 19:04:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-21 19:04:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:04:11,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:11,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:04:11,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:04:11,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 19:04:11,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash 90060467, now seen corresponding path program 1 times [2023-11-21 19:04:11,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:11,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395283054] [2023-11-21 19:04:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:11,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:11,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:11,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395283054] [2023-11-21 19:04:11,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395283054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:11,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:04:11,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:04:11,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592033349] [2023-11-21 19:04:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:11,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:04:11,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:04:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:04:11,567 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2023-11-21 19:04:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:11,605 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-11-21 19:04:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:04:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 5 [2023-11-21 19:04:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:11,606 INFO L225 Difference]: With dead ends: 29 [2023-11-21 19:04:11,607 INFO L226 Difference]: Without dead ends: 19 [2023-11-21 19:04:11,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:04:11,609 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:11,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:04:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-21 19:04:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-21 19:04:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) 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) [2023-11-21 19:04:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-11-21 19:04:11,614 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2023-11-21 19:04:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:11,615 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-11-21 19:04:11,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2023-11-21 19:04:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-11-21 19:04:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 19:04:11,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:11,616 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-21 19:04:11,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:04:11,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 19:04:11,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash 642763214, now seen corresponding path program 1 times [2023-11-21 19:04:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334080442] [2023-11-21 19:04:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:11,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334080442] [2023-11-21 19:04:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334080442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358460626] [2023-11-21 19:04:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:11,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:11,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:11,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:11,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:04:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:11,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:04:11,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:12,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:04:12,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358460626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:12,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:04:12,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-21 19:04:12,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532180395] [2023-11-21 19:04:12,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:12,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:04:12,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:04:12,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:04:12,048 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-21 19:04:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:12,111 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-21 19:04:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:04:12,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 19:04:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:12,115 INFO L225 Difference]: With dead ends: 19 [2023-11-21 19:04:12,115 INFO L226 Difference]: Without dead ends: 18 [2023-11-21 19:04:12,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:04:12,118 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:12,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:04:12,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-21 19:04:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-21 19:04:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:04:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-21 19:04:12,123 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2023-11-21 19:04:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:12,123 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-21 19:04:12,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-21 19:04:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-21 19:04:12,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:04:12,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:12,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-21 19:04:12,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:12,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:12,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 19:04:12,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1549176788, now seen corresponding path program 1 times [2023-11-21 19:04:12,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:12,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372952041] [2023-11-21 19:04:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:12,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:12,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:12,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372952041] [2023-11-21 19:04:12,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372952041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:12,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296555552] [2023-11-21 19:04:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:12,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:12,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:12,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:12,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:04:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:12,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:04:12,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:12,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:04:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:12,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296555552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:04:12,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [32718168] [2023-11-21 19:04:12,659 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-21 19:04:12,659 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:04:12,663 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:04:12,669 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:04:12,669 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:04:13,699 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:04:14,257 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '275#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~malloc206#1.offset| 0) (<= 2147483647 |ULTIMATE.start_main_#t~post207#1|) (<= 2 |ULTIMATE.start_main_~arr~0#1.base|) (= |ULTIMATE.start_main_~arr~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~length~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc206#1.base|))' at error location [2023-11-21 19:04:14,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:04:14,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:04:14,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-21 19:04:14,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739803897] [2023-11-21 19:04:14,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:04:14,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 19:04:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 19:04:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-21 19:04:14,261 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:04:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:14,384 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2023-11-21 19:04:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 19:04:14,385 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 19:04:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:14,387 INFO L225 Difference]: With dead ends: 55 [2023-11-21 19:04:14,387 INFO L226 Difference]: Without dead ends: 54 [2023-11-21 19:04:14,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-21 19:04:14,390 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 68 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:14,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 59 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:04:14,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-21 19:04:14,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 27. [2023-11-21 19:04:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:04:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-11-21 19:04:14,397 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2023-11-21 19:04:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:14,398 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-11-21 19:04:14,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:04:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-11-21 19:04:14,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:04:14,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:14,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:14,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:14,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:14,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 19:04:14,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1549170542, now seen corresponding path program 1 times [2023-11-21 19:04:14,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:14,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953892769] [2023-11-21 19:04:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:14,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:15,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953892769] [2023-11-21 19:04:15,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953892769] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:15,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208473579] [2023-11-21 19:04:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:15,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:15,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:15,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:15,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:04:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:15,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 19:04:15,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:15,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 19:04:15,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-21 19:04:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:15,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:04:15,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-21 19:04:15,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-21 19:04:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:15,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208473579] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:04:15,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [114995481] [2023-11-21 19:04:15,335 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-21 19:04:15,335 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:04:15,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:04:15,340 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:04:15,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:04:16,309 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:04:17,368 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '439#(and (<= |ULTIMATE.start_main_~length~0#1| |ULTIMATE.start_main_~i~0#1|) (exists ((|v_ULTIMATE.start_main_~i~0#1_32| Int)) (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~malloc206#1.offset| 0) (<= 2 |ULTIMATE.start_main_~arr~0#1.base|) (= |ULTIMATE.start_main_~arr~0#1.offset| 0) (<= 0 |v_ULTIMATE.start_main_~i~0#1_32|) (<= 2 |ULTIMATE.start_main_#t~malloc206#1.base|))) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~length~0#1|) (<= (+ 2147483650 |ULTIMATE.start_main_#t~mem209#1|) 0) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_#t~mem209#1| (select (select |#memory_int| |ULTIMATE.start_main_~arr~0#1.base|) |ULTIMATE.start_main_~arr~0#1.offset|)))' at error location [2023-11-21 19:04:17,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:04:17,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:04:17,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-21 19:04:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001053889] [2023-11-21 19:04:17,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:04:17,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 19:04:17,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:17,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 19:04:17,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-21 19:04:17,379 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 13 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) [2023-11-21 19:04:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:17,536 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2023-11-21 19:04:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 19:04:17,537 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 19:04:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:17,542 INFO L225 Difference]: With dead ends: 36 [2023-11-21 19:04:17,542 INFO L226 Difference]: Without dead ends: 34 [2023-11-21 19:04:17,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-21 19:04:17,547 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 76 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:17,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 20 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:04:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-21 19:04:17,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2023-11-21 19:04:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 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) [2023-11-21 19:04:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-11-21 19:04:17,564 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 8 [2023-11-21 19:04:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:17,564 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-11-21 19:04:17,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 13 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) [2023-11-21 19:04:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-11-21 19:04:17,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:04:17,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:17,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:17,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:17,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:17,782 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)] === [2023-11-21 19:04:17,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash -779646471, now seen corresponding path program 1 times [2023-11-21 19:04:17,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:17,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828169342] [2023-11-21 19:04:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:17,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:04:17,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:04:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:04:17,834 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:04:17,835 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:04:17,836 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-21 19:04:17,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-21 19:04:17,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-21 19:04:17,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-21 19:04:17,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-21 19:04:17,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-21 19:04:17,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:04:17,844 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-21 19:04:17,849 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:04:17,861 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,863 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,863 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,864 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,864 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,867 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated [2023-11-21 19:04:17,867 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated [2023-11-21 19:04:17,867 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:04:17 BoogieIcfgContainer [2023-11-21 19:04:17,875 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:04:17,876 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:04:17,876 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:04:17,876 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:04:17,877 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:04:10" (3/4) ... [2023-11-21 19:04:17,878 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 19:04:17,887 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,887 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,888 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,888 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,888 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated [2023-11-21 19:04:17,889 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,889 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-21 19:04:17,889 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated [2023-11-21 19:04:17,926 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ccb2df-26f7-4b83-bacf-a63f7d40306d/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:04:17,927 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:04:17,927 INFO L158 Benchmark]: Toolchain (without parser) took 8102.19ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 128.3MB in the beginning and 161.6MB in the end (delta: -33.2MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2023-11-21 19:04:17,928 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:04:17,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.75ms. Allocated memory is still 174.1MB. Free memory was 128.3MB in the beginning and 110.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 19:04:17,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.00ms. Allocated memory is still 174.1MB. Free memory was 110.5MB in the beginning and 108.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:04:17,929 INFO L158 Benchmark]: Boogie Preprocessor took 34.82ms. Allocated memory is still 174.1MB. Free memory was 108.8MB in the beginning and 107.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:04:17,929 INFO L158 Benchmark]: RCFGBuilder took 377.04ms. Allocated memory is still 174.1MB. Free memory was 107.3MB in the beginning and 94.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 19:04:17,929 INFO L158 Benchmark]: TraceAbstraction took 6977.57ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 94.1MB in the beginning and 163.6MB in the end (delta: -69.5MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2023-11-21 19:04:17,930 INFO L158 Benchmark]: Witness Printer took 50.74ms. Allocated memory is still 251.7MB. Free memory was 163.6MB in the beginning and 161.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:04:17,932 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.75ms. Allocated memory is still 174.1MB. Free memory was 128.3MB in the beginning and 110.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.00ms. Allocated memory is still 174.1MB. Free memory was 110.5MB in the beginning and 108.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.82ms. Allocated memory is still 174.1MB. Free memory was 108.8MB in the beginning and 107.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 377.04ms. Allocated memory is still 174.1MB. Free memory was 107.3MB in the beginning and 94.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6977.57ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 94.1MB in the beginning and 163.6MB in the end (delta: -69.5MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Witness Printer took 50.74ms. Allocated memory is still 251.7MB. Free memory was 163.6MB in the beginning and 161.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 375]: integer overflow possible integer overflow possible We found a FailurePath: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); VAL [arr={2:0}, length=1] [L369] COND FALSE !(!arr) [L370] i=0 VAL [arr={2:0}, i=0, length=1] [L370] COND TRUE i