./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/flag-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/flag-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX --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 abf4329ddc5f09eb293d69b4a141041b710b785b2b3f28194d7fc784d5a71533 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:30,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:30,808 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:13:30,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:30,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:30,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:30,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:30,862 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:30,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:30,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:30,868 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:30,870 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:30,870 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:30,872 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:30,873 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:30,873 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:30,874 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:30,874 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:30,875 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:30,875 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:30,876 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:30,877 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:30,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:30,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:30,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:30,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:30,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:30,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:30,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:30,881 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:13:30,883 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:13:30,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:30,883 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:30,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:30,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:30,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:30,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:30,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:30,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:30,886 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:30,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:30,887 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:30,887 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:30,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:30,888 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_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abf4329ddc5f09eb293d69b4a141041b710b785b2b3f28194d7fc784d5a71533 [2023-11-12 00:13:31,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:31,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:31,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:31,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:31,230 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:31,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/termination-memory-alloca/flag-alloca.i [2023-11-12 00:13:34,418 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:34,759 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:34,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/sv-benchmarks/c/termination-memory-alloca/flag-alloca.i [2023-11-12 00:13:34,792 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/data/e6faa0566/a07a8129935d437ea12909fb1d4c102a/FLAG7aef92872 [2023-11-12 00:13:34,812 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/data/e6faa0566/a07a8129935d437ea12909fb1d4c102a [2023-11-12 00:13:34,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:34,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:34,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:34,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:34,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:34,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:34" (1/1) ... [2023-11-12 00:13:34,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210a6c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:34, skipping insertion in model container [2023-11-12 00:13:34,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:34" (1/1) ... [2023-11-12 00:13:34,917 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:35,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:35,346 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:35,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:35,459 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:35,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35 WrapperNode [2023-11-12 00:13:35,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:35,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:35,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:35,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:35,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,532 INFO L138 Inliner]: procedures = 111, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-11-12 00:13:35,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:35,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:35,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:35,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:35,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:35,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:35,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:35,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:35,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (1/1) ... [2023-11-12 00:13:35,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:35,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:35,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:35,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:13:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:13:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:13:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:13:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:35,820 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:35,822 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:36,054 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:36,117 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:36,118 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:13:36,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:36 BoogieIcfgContainer [2023-11-12 00:13:36,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:36,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:36,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:36,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:36,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:34" (1/3) ... [2023-11-12 00:13:36,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327289e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:36, skipping insertion in model container [2023-11-12 00:13:36,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:35" (2/3) ... [2023-11-12 00:13:36,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327289e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:36, skipping insertion in model container [2023-11-12 00:13:36,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:36" (3/3) ... [2023-11-12 00:13:36,131 INFO L112 eAbstractionObserver]: Analyzing ICFG flag-alloca.i [2023-11-12 00:13:36,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:36,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 00:13:36,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:36,211 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;@2f89a1b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:36,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 00:13:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) [2023-11-12 00:13:36,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:13:36,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:36,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:13:36,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-12 00:13:36,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1883945, now seen corresponding path program 1 times [2023-11-12 00:13:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:36,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752178864] [2023-11-12 00:13:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:36,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:37,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:37,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752178864] [2023-11-12 00:13:37,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752178864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:37,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:37,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057455146] [2023-11-12 00:13:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:37,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:13:37,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:13:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:37,556 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) Second operand has 5 states, 4 states have (on average 1.0) 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) [2023-11-12 00:13:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:37,753 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-11-12 00:13:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:13:37,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) 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 [2023-11-12 00:13:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:37,771 INFO L225 Difference]: With dead ends: 22 [2023-11-12 00:13:37,771 INFO L226 Difference]: Without dead ends: 16 [2023-11-12 00:13:37,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:13:37,782 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:37,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 12 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-12 00:13:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2023-11-12 00:13:37,824 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) [2023-11-12 00:13:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-12 00:13:37,827 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2023-11-12 00:13:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:37,828 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-12 00:13:37,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) 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) [2023-11-12 00:13:37,828 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-12 00:13:37,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:13:37,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:37,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:13:37,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:13:37,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-12 00:13:37,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash 58402341, now seen corresponding path program 1 times [2023-11-12 00:13:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:37,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102191493] [2023-11-12 00:13:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:37,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:13:37,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:13:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:13:37,901 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:13:37,902 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:13:37,904 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-12 00:13:37,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-12 00:13:37,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-12 00:13:37,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-12 00:13:37,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:13:37,912 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:13:37,917 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:13:37,935 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:13:37,939 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc5 [2023-11-12 00:13:37,940 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc2 [2023-11-12 00:13:37,940 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-12 00:13:37,940 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc5 [2023-11-12 00:13:37,941 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-12 00:13:37,941 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:13:37,941 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc2 [2023-11-12 00:13:37,944 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-12 00:13:37,946 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:13:37,946 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc5 [2023-11-12 00:13:37,947 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-12 00:13:37,948 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc2 [2023-11-12 00:13:37,948 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-12 00:13:37,948 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post7 could not be translated [2023-11-12 00:13:37,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:13:37 BoogieIcfgContainer [2023-11-12 00:13:37,964 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:13:37,964 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:13:37,965 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:13:37,965 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:13:37,966 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:36" (3/4) ... [2023-11-12 00:13:37,967 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:13:37,985 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-12 00:13:37,987 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc2 [2023-11-12 00:13:37,988 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc5 [2023-11-12 00:13:37,988 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:13:37,988 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-12 00:13:37,989 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc2 [2023-11-12 00:13:37,989 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc5 [2023-11-12 00:13:37,989 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-12 00:13:37,989 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:13:37,990 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-12 00:13:37,991 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post7 could not be translated [2023-11-12 00:13:37,991 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc2 [2023-11-12 00:13:37,991 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:13:37,991 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc5 [2023-11-12 00:13:37,992 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-12 00:13:38,032 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:13:38,032 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:13:38,033 INFO L158 Benchmark]: Toolchain (without parser) took 3209.01ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 74.3MB in the beginning and 81.1MB in the end (delta: -6.8MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2023-11-12 00:13:38,034 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:38,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.77ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 58.3MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:13:38,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.24ms. Allocated memory is still 117.4MB. Free memory was 58.3MB in the beginning and 56.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:38,035 INFO L158 Benchmark]: Boogie Preprocessor took 71.87ms. Allocated memory is still 117.4MB. Free memory was 56.2MB in the beginning and 55.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:38,036 INFO L158 Benchmark]: RCFGBuilder took 513.22ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 55.0MB in the beginning and 122.7MB in the end (delta: -67.7MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:38,036 INFO L158 Benchmark]: TraceAbstraction took 1839.82ms. Allocated memory is still 151.0MB. Free memory was 121.5MB in the beginning and 84.3MB in the end (delta: 37.3MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2023-11-12 00:13:38,037 INFO L158 Benchmark]: Witness Printer took 68.18ms. Allocated memory is still 151.0MB. Free memory was 84.3MB in the beginning and 81.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:13:38,039 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.77ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 58.3MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.24ms. Allocated memory is still 117.4MB. Free memory was 58.3MB in the beginning and 56.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.87ms. Allocated memory is still 117.4MB. Free memory was 56.2MB in the beginning and 55.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.22ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 55.0MB in the beginning and 122.7MB in the end (delta: -67.7MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1839.82ms. Allocated memory is still 151.0MB. Free memory was 121.5MB in the beginning and 84.3MB in the end (delta: 37.3MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Witness Printer took 68.18ms. Allocated memory is still 151.0MB. Free memory was 84.3MB in the beginning and 81.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 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: 558]: integer overflow possible integer overflow possible We found a FailurePath: [L564] CALL f(__VERIFIER_nondet_int(),__VERIFIER_nondet_int()) [L549] int* x_ref = __builtin_alloca (sizeof(int)); [L550] int* y_ref = __builtin_alloca (sizeof(int)); [L551] int* flag = __builtin_alloca (sizeof(int)); [L552] int* c = __builtin_alloca (sizeof(int)); [L553] *x_ref = x [L554] *y_ref = y [L555] *flag = 1 [L556] *c = 0 VAL [\old(x)=2147483647, \old(y)=-1, c={3:0}, flag={2:0}, x=2147483647, x_ref={5:0}, y=-1, y_ref={6:0}] [L557] EXPR \read(*flag) VAL [\old(x)=2147483647, \old(y)=-1, c={3:0}, flag={2:0}, x=2147483647, x_ref={5:0}, y=-1, y_ref={6:0}] [L557] COND TRUE *flag [L558] EXPR \read(*x_ref) [L558] (*x_ref)++ VAL [\old(x)=2147483647, \old(y)=-1, c={3:0}, flag={2:0}, x=2147483647, x_ref={5:0}, y=-1, y_ref={6:0}] - UnprovableResult [Line: 558]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 4 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=1, InterpolantAutomatonStates: 6, 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, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-12 00:13:38,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b3e96c-a829-4d5d-9967-2ba3c8d8d133/bin/utaipan-verify-NcY6lQBIFX/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)