./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ --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 32bit --witnessprinter.graph.data.programhash a1ab69f0937890c2718fbb3a364dff1229f612b683709e7f1057d021d65f81aa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:48:13,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:48:13,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:48:13,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:48:13,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:48:13,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:48:13,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:48:13,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:48:13,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:48:13,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:48:13,991 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:48:13,993 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:48:13,993 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:48:13,995 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:48:13,996 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:48:13,996 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:48:13,997 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:48:13,997 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:48:13,998 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:48:13,999 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:48:13,999 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:48:14,000 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:48:14,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:48:14,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:48:14,004 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:48:14,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:48:14,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:48:14,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:48:14,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:48:14,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:48:14,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:48:14,008 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:48:14,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:48:14,009 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:48:14,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:48:14,009 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:48:14,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:48:14,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:48:14,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:14,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:48:14,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:48:14,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:48:14,012 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:48:14,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:48:14,013 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:48:14,013 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:48:14,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:48:14,014 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_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1ab69f0937890c2718fbb3a364dff1229f612b683709e7f1057d021d65f81aa [2023-11-19 04:48:14,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:48:14,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:48:14,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:48:14,420 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:48:14,421 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:48:14,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c [2023-11-19 04:48:17,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:48:17,917 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:48:17,918 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/sv-benchmarks/c/recursive-simple/id_b3_o5-1.c [2023-11-19 04:48:17,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/data/0569683e0/65aa3f4292fc47ccbdce1a37e1bbef05/FLAGd53bb5bbd [2023-11-19 04:48:17,941 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/data/0569683e0/65aa3f4292fc47ccbdce1a37e1bbef05 [2023-11-19 04:48:17,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:48:17,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:48:17,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:17,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:48:17,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:48:17,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:17" (1/1) ... [2023-11-19 04:48:17,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a5994f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:17, skipping insertion in model container [2023-11-19 04:48:17,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:17" (1/1) ... [2023-11-19 04:48:17,983 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:18,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:18,146 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:48:18,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:18,173 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:48:18,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18 WrapperNode [2023-11-19 04:48:18,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:18,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:18,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:48:18,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:48:18,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,209 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2023-11-19 04:48:18,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:18,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:48:18,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:48:18,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:48:18,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:48:18,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:48:18,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:48:18,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:48:18,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (1/1) ... [2023-11-19 04:48:18,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:18,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:48:18,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:48:18,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:48:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:48:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:48:18,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:48:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:48:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-11-19 04:48:18,321 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-11-19 04:48:18,414 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:48:18,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:48:18,642 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:48:18,721 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:48:18,728 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:48:18,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:18 BoogieIcfgContainer [2023-11-19 04:48:18,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:48:18,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:48:18,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:48:18,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:48:18,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:48:17" (1/3) ... [2023-11-19 04:48:18,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3005d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:18, skipping insertion in model container [2023-11-19 04:48:18,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:18" (2/3) ... [2023-11-19 04:48:18,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3005d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:18, skipping insertion in model container [2023-11-19 04:48:18,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:18" (3/3) ... [2023-11-19 04:48:18,750 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o5-1.c [2023-11-19 04:48:18,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:48:18,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 04:48:18,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:48:18,842 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;@4f5496a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:48:18,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 04:48:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:48:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:48:18,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:18,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:48:18,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 04:48:18,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash 69459831, now seen corresponding path program 1 times [2023-11-19 04:48:18,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:48:18,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040561258] [2023-11-19 04:48:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:18,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:48:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:48:18,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:48:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:48:19,004 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:48:19,007 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:48:19,009 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-19 04:48:19,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-19 04:48:19,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-19 04:48:19,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-19 04:48:19,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:48:19,021 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:48:19,028 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:48:19,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:48:19 BoogieIcfgContainer [2023-11-19 04:48:19,058 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:48:19,059 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:48:19,059 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:48:19,060 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:48:19,060 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:18" (3/4) ... [2023-11-19 04:48:19,061 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 04:48:19,117 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:48:19,117 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:48:19,118 INFO L158 Benchmark]: Toolchain (without parser) took 1172.71ms. Allocated memory is still 213.9MB. Free memory was 164.3MB in the beginning and 124.5MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-19 04:48:19,119 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 151.0MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:48:19,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.63ms. Allocated memory is still 213.9MB. Free memory was 163.9MB in the beginning and 153.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:48:19,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.26ms. Allocated memory is still 213.9MB. Free memory was 153.7MB in the beginning and 152.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:48:19,124 INFO L158 Benchmark]: Boogie Preprocessor took 19.19ms. Allocated memory is still 213.9MB. Free memory was 152.6MB in the beginning and 151.7MB in the end (delta: 892.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:48:19,128 INFO L158 Benchmark]: RCFGBuilder took 502.38ms. Allocated memory is still 213.9MB. Free memory was 151.7MB in the beginning and 140.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:48:19,129 INFO L158 Benchmark]: TraceAbstraction took 320.31ms. Allocated memory is still 213.9MB. Free memory was 139.2MB in the beginning and 126.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:48:19,129 INFO L158 Benchmark]: Witness Printer took 57.89ms. Allocated memory is still 213.9MB. Free memory was 126.2MB in the beginning and 124.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:48:19,136 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 151.0MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.63ms. Allocated memory is still 213.9MB. Free memory was 163.9MB in the beginning and 153.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.26ms. Allocated memory is still 213.9MB. Free memory was 153.7MB in the beginning and 152.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.19ms. Allocated memory is still 213.9MB. Free memory was 152.6MB in the beginning and 151.7MB in the end (delta: 892.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 502.38ms. Allocated memory is still 213.9MB. Free memory was 151.7MB in the beginning and 140.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 320.31ms. Allocated memory is still 213.9MB. Free memory was 139.2MB in the beginning and 126.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 57.89ms. Allocated memory is still 213.9MB. Free memory was 126.2MB in the beginning and 124.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL id(input) VAL [\old(x)=-2147483648] [L7] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L8] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: 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 2 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2023-11-19 04:48:19,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7338c8d6-038b-4f80-80de-df6d1e8cf7c7/bin/utaipan-verify-t7M7D8N6sZ/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)