./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.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_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/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_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/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_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/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 a830784866b9d978d50fc7ce179ad1833e96bce936e06d428688d824a51c25e5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:08,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:09,018 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:24:09,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:09,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:09,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:09,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:09,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:09,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:09,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:09,077 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:09,078 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:09,079 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:09,080 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:24:09,081 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:09,081 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:09,082 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:24:09,082 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:24:09,083 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:09,083 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:24:09,084 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:24:09,085 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:24:09,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:09,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:09,087 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:24:09,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:24:09,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:24:09,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:09,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:09,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:09,091 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:09,091 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:24:09,092 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:24:09,092 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:24:09,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:09,093 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:09,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:09,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:09,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:09,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:09,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:09,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:24:09,096 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:24:09,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:24:09,097 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:24:09,097 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:09,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:09,098 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_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a830784866b9d978d50fc7ce179ad1833e96bce936e06d428688d824a51c25e5 [2023-11-19 05:24:09,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:09,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:09,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:09,519 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:09,519 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:09,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2023-11-19 05:24:12,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:13,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:13,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2023-11-19 05:24:13,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/data/b98f92af7/ec485eea7aec4c289103c5beb60b0c17/FLAG0bd2caa64 [2023-11-19 05:24:13,105 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/data/b98f92af7/ec485eea7aec4c289103c5beb60b0c17 [2023-11-19 05:24:13,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:13,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:13,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:13,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:13,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:13,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9cb16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13, skipping insertion in model container [2023-11-19 05:24:13,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,148 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:13,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:13,369 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:24:13,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:13,414 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:24:13,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13 WrapperNode [2023-11-19 05:24:13,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:13,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:13,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:24:13,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:24:13,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,453 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2023-11-19 05:24:13,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:13,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:24:13,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:24:13,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:24:13,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:24:13,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:24:13,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:24:13,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:24:13,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (1/1) ... [2023-11-19 05:24:13,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:13,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:13,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:24:13,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:24:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:24:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:24:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:24:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:24:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-11-19 05:24:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-11-19 05:24:13,636 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:24:13,639 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:24:13,810 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:24:13,870 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:24:13,870 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:24:13,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:13 BoogieIcfgContainer [2023-11-19 05:24:13,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:24:13,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:24:13,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:24:13,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:24:13,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:24:13" (1/3) ... [2023-11-19 05:24:13,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430332b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:13, skipping insertion in model container [2023-11-19 05:24:13,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:13" (2/3) ... [2023-11-19 05:24:13,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430332b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:13, skipping insertion in model container [2023-11-19 05:24:13,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:13" (3/3) ... [2023-11-19 05:24:13,887 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o2-1.c [2023-11-19 05:24:13,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:24:13,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 05:24:13,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:13,994 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;@5311c2bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:13,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 05:24:13,999 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 05:24:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:24:14,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:14,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:24:14,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:24:14,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:14,015 INFO L85 PathProgramCache]: Analyzing trace with hash 69459831, now seen corresponding path program 1 times [2023-11-19 05:24:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:14,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119291242] [2023-11-19 05:24:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:24:14,133 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:24:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:24:14,165 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:24:14,167 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:24:14,168 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-19 05:24:14,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-19 05:24:14,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-19 05:24:14,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-19 05:24:14,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:24:14,177 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:24:14,182 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:24:14,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:24:14 BoogieIcfgContainer [2023-11-19 05:24:14,200 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:24:14,200 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:24:14,201 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:24:14,201 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:24:14,201 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:13" (3/4) ... [2023-11-19 05:24:14,202 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 05:24:14,238 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:24:14,238 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:24:14,239 INFO L158 Benchmark]: Toolchain (without parser) took 1126.64ms. Allocated memory is still 165.7MB. Free memory was 122.7MB in the beginning and 126.4MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:14,239 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:14,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.25ms. Allocated memory is still 165.7MB. Free memory was 122.4MB in the beginning and 112.7MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 05:24:14,241 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.96ms. Allocated memory is still 165.7MB. Free memory was 112.7MB in the beginning and 111.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:24:14,241 INFO L158 Benchmark]: Boogie Preprocessor took 27.41ms. Allocated memory is still 165.7MB. Free memory was 111.2MB in the beginning and 110.3MB in the end (delta: 979.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:14,242 INFO L158 Benchmark]: RCFGBuilder took 392.16ms. Allocated memory is still 165.7MB. Free memory was 110.3MB in the beginning and 99.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:24:14,243 INFO L158 Benchmark]: TraceAbstraction took 321.41ms. Allocated memory is still 165.7MB. Free memory was 98.3MB in the beginning and 128.5MB in the end (delta: -30.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:14,243 INFO L158 Benchmark]: Witness Printer took 37.53ms. Allocated memory is still 165.7MB. Free memory was 127.8MB in the beginning and 126.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:14,246 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.25ms. Allocated memory is still 165.7MB. Free memory was 122.4MB in the beginning and 112.7MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.96ms. Allocated memory is still 165.7MB. Free memory was 112.7MB in the beginning and 111.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.41ms. Allocated memory is still 165.7MB. Free memory was 111.2MB in the beginning and 110.3MB in the end (delta: 979.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 392.16ms. Allocated memory is still 165.7MB. Free memory was 110.3MB in the beginning and 99.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 321.41ms. Allocated memory is still 165.7MB. Free memory was 98.3MB in the beginning and 128.5MB in the end (delta: -30.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.53ms. Allocated memory is still 165.7MB. Free memory was 127.8MB in the beginning and 126.4MB in the end (delta: 1.4MB). There was no memory consumed. 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 05:24:14,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c3e0fe5-225d-4cdb-9c24-eee01c5f8aa8/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)