./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_min_sub_05_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_min_sub_05_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh --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 31de659d6df42b7acb6e118551856187f6aad305952860815f1d1aa69a4f8d16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:22:06,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:22:06,679 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 12:22:06,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:22:06,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:22:06,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:22:06,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:22:06,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:22:06,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:22:06,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:22:06,713 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:22:06,713 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:22:06,714 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:22:06,714 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:22:06,715 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:22:06,715 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:22:06,716 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:22:06,716 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:22:06,717 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:22:06,717 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:22:06,718 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:22:06,718 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:22:06,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:22:06,720 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:22:06,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:22:06,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:22:06,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:22:06,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:22:06,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:22:06,722 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 12:22:06,723 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:22:06,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:22:06,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:22:06,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:22:06,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:22:06,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:22:06,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:06,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:22:06,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:22:06,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:22:06,727 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:22:06,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:22:06,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:22:06,728 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:22:06,728 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:22:06,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:22:06,729 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_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de659d6df42b7acb6e118551856187f6aad305952860815f1d1aa69a4f8d16 [2023-12-02 12:22:06,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:22:06,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:22:06,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:22:06,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:22:06,987 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:22:06,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_min_sub_05_bad.i [2023-12-02 12:22:09,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:22:10,090 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:22:10,090 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_min_sub_05_bad.i [2023-12-02 12:22:10,113 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/data/440ea0901/aba77cb613c34653ad5eff8d3891606a/FLAGae0c676c5 [2023-12-02 12:22:10,127 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/data/440ea0901/aba77cb613c34653ad5eff8d3891606a [2023-12-02 12:22:10,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:22:10,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:22:10,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:10,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:22:10,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:22:10,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:10" (1/1) ... [2023-12-02 12:22:10,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d9a648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:10, skipping insertion in model container [2023-12-02 12:22:10,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:10" (1/1) ... [2023-12-02 12:22:10,191 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:22:11,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:11,055 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:22:11,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:11,293 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:11,293 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:11,293 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:11,294 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:11,300 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:22:11,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11 WrapperNode [2023-12-02 12:22:11,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:11,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:11,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:22:11,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:22:11,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,359 INFO L138 Inliner]: procedures = 498, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2023-12-02 12:22:11,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:11,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:22:11,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:22:11,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:22:11,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:22:11,385 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:22:11,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:22:11,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:22:11,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:11,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:11,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:22:11,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:22:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 12:22:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 12:22:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:22:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:22:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:22:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 12:22:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:22:11,603 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:22:11,605 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:22:11,701 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:22:11,748 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:22:11,748 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 12:22:11,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:11 BoogieIcfgContainer [2023-12-02 12:22:11,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:22:11,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:22:11,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:22:11,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:22:11,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:22:10" (1/3) ... [2023-12-02 12:22:11,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4843060b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:11, skipping insertion in model container [2023-12-02 12:22:11,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11" (2/3) ... [2023-12-02 12:22:11,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4843060b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:11, skipping insertion in model container [2023-12-02 12:22:11,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:11" (3/3) ... [2023-12-02 12:22:11,758 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_min_sub_05_bad.i [2023-12-02 12:22:11,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:22:11,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 12:22:11,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:22:11,818 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;@37381169, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:22:11,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 12:22:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-12-02 12:22:11,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 12:22:11,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:11,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:11,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 12:22:11,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1467123167, now seen corresponding path program 1 times [2023-12-02 12:22:11,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:11,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852356677] [2023-12-02 12:22:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:11,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:22:11,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:22:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:22:11,987 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:22:11,988 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:22:11,989 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 12:22:11,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 12:22:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:22:11,996 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 12:22:12,000 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:22:12,012 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet99 [2023-12-02 12:22:12,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:22:12 BoogieIcfgContainer [2023-12-02 12:22:12,028 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:22:12,029 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:22:12,029 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:22:12,029 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:22:12,029 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:11" (3/4) ... [2023-12-02 12:22:12,032 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 12:22:12,033 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:22:12,034 INFO L158 Benchmark]: Toolchain (without parser) took 1903.39ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 103.4MB in the beginning and 166.2MB in the end (delta: -62.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:12,035 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:12,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1169.71ms. Allocated memory is still 144.7MB. Free memory was 103.0MB in the beginning and 88.5MB in the end (delta: 14.6MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2023-12-02 12:22:12,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.66ms. Allocated memory is still 144.7MB. Free memory was 88.5MB in the beginning and 85.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:22:12,040 INFO L158 Benchmark]: Boogie Preprocessor took 25.04ms. Allocated memory is still 144.7MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:22:12,041 INFO L158 Benchmark]: RCFGBuilder took 365.13ms. Allocated memory is still 144.7MB. Free memory was 84.3MB in the beginning and 70.9MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 12:22:12,041 INFO L158 Benchmark]: TraceAbstraction took 275.43ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 70.4MB in the beginning and 166.2MB in the end (delta: -95.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 12:22:12,042 INFO L158 Benchmark]: Witness Printer took 4.66ms. Allocated memory is still 201.3MB. Free memory is still 166.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:12,045 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1169.71ms. Allocated memory is still 144.7MB. Free memory was 103.0MB in the beginning and 88.5MB in the end (delta: 14.6MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.66ms. Allocated memory is still 144.7MB. Free memory was 88.5MB in the beginning and 85.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.04ms. Allocated memory is still 144.7MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.13ms. Allocated memory is still 144.7MB. Free memory was 84.3MB in the beginning and 70.9MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 275.43ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 70.4MB in the beginning and 166.2MB in the end (delta: -95.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.66ms. Allocated memory is still 201.3MB. Free memory is still 166.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet99 - 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 - UnprovableResult [Line: 1561]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1569. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int staticTrue = 1; [L1549] static int staticFalse = 0; [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}, staticFalse=0, staticTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741825, argc=1073741825, argv={1073741827:1073741826}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_min_sub_05_bad() [L1552] int data; [L1553] data = 0 [L1554] COND TRUE \read(staticTrue) [L1556] data = (-0x7fffffff - 1) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1558] COND TRUE \read(staticTrue) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1561] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] - UnprovableResult [Line: 1561]: 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, 14 locations, 2 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=14occurred 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, 7 NumberOfCodeBlocks, 7 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 could not prove your program: unable to determine feasibility of some traces [2023-12-02 12:22:12,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_min_sub_05_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh --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 31de659d6df42b7acb6e118551856187f6aad305952860815f1d1aa69a4f8d16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:22:14,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:22:14,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-12-02 12:22:14,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:22:14,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:22:14,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:22:14,245 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:22:14,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:22:14,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:22:14,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:22:14,247 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:22:14,248 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:22:14,248 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:22:14,249 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:22:14,249 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:22:14,250 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:22:14,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:22:14,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:22:14,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:22:14,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:22:14,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:22:14,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:22:14,254 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:22:14,255 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 12:22:14,255 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 12:22:14,255 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 12:22:14,256 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:22:14,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:22:14,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:22:14,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:22:14,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 12:22:14,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:22:14,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:22:14,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:14,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:22:14,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:22:14,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:22:14,260 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 12:22:14,260 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 12:22:14,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:22:14,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:22:14,261 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:22:14,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:22:14,262 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de659d6df42b7acb6e118551856187f6aad305952860815f1d1aa69a4f8d16 [2023-12-02 12:22:14,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:22:14,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:22:14,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:22:14,603 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:22:14,603 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:22:14,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_min_sub_05_bad.i [2023-12-02 12:22:17,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:22:17,720 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:22:17,721 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_min_sub_05_bad.i [2023-12-02 12:22:17,747 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/data/d560f8fc5/e813566d3bdb40adb08d23d380905244/FLAGa38e47a43 [2023-12-02 12:22:17,762 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/data/d560f8fc5/e813566d3bdb40adb08d23d380905244 [2023-12-02 12:22:17,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:22:17,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:22:17,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:17,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:22:17,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:22:17,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:17" (1/1) ... [2023-12-02 12:22:17,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d0a6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:17, skipping insertion in model container [2023-12-02 12:22:17,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:17" (1/1) ... [2023-12-02 12:22:17,838 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:22:18,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:18,659 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:22:18,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:18,900 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:18,900 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:18,900 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:18,901 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:18,908 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:22:18,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18 WrapperNode [2023-12-02 12:22:18,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:18,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:18,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:22:18,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:22:18,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:18,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:18,978 INFO L138 Inliner]: procedures = 503, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2023-12-02 12:22:18,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:18,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:22:18,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:22:18,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:22:18,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:18,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:18,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:18,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:19,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:19,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:19,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:19,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:19,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:22:19,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:22:19,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:22:19,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:22:19,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (1/1) ... [2023-12-02 12:22:19,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:19,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:22:19,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:22:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 12:22:19,086 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 12:22:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 12:22:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:22:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:22:19,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:22:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 12:22:19,239 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:22:19,241 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:22:19,338 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:22:19,374 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:22:19,374 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 12:22:19,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:19 BoogieIcfgContainer [2023-12-02 12:22:19,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:22:19,377 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:22:19,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:22:19,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:22:19,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:22:17" (1/3) ... [2023-12-02 12:22:19,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9cbed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:19, skipping insertion in model container [2023-12-02 12:22:19,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:18" (2/3) ... [2023-12-02 12:22:19,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9cbed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:19, skipping insertion in model container [2023-12-02 12:22:19,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:19" (3/3) ... [2023-12-02 12:22:19,382 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_min_sub_05_bad.i [2023-12-02 12:22:19,396 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:22:19,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 12:22:19,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:22:19,443 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;@20f6a6e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:22:19,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 12:22:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 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) [2023-12-02 12:22:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 12:22:19,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:19,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:19,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 12:22:19,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1013506268, now seen corresponding path program 1 times [2023-12-02 12:22:19,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:22:19,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10437426] [2023-12-02 12:22:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:22:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:22:19,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:22:19,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 12:22:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:19,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:22:19,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:22:19,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:22:19,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:22:19,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10437426] [2023-12-02 12:22:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10437426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:19,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:22:19,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:22:19,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495286632] [2023-12-02 12:22:19,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:22:19,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:22:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:22:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:22:19,657 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 12:22:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:19,687 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2023-12-02 12:22:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:22:19,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-02 12:22:19,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:19,695 INFO L225 Difference]: With dead ends: 29 [2023-12-02 12:22:19,695 INFO L226 Difference]: Without dead ends: 11 [2023-12-02 12:22:19,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:22:19,701 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:19,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:22:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-02 12:22:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-02 12:22:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 12:22:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 12:22:19,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2023-12-02 12:22:19,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:19,743 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 12:22:19,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 12:22:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 12:22:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 12:22:19,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:19,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:19,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:22:19,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:22:19,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 12:22:19,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:19,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1013508190, now seen corresponding path program 1 times [2023-12-02 12:22:19,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:22:19,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719349350] [2023-12-02 12:22:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:19,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:22:19,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:22:19,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 12:22:19,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 12:22:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:22:20,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:22:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:22:20,071 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 12:22:20,071 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:22:20,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 12:22:20,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 12:22:20,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 12:22:20,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:22:20,280 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 12:22:20,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:22:20,300 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet97 [2023-12-02 12:22:20,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:22:20 BoogieIcfgContainer [2023-12-02 12:22:20,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:22:20,310 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:22:20,310 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:22:20,311 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:22:20,311 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:19" (3/4) ... [2023-12-02 12:22:20,313 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 12:22:20,314 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:22:20,315 INFO L158 Benchmark]: Toolchain (without parser) took 2548.00ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 67.3MB in the end (delta: 10.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-12-02 12:22:20,316 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 47.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:20,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1140.84ms. Allocated memory is still 104.9MB. Free memory was 77.7MB in the beginning and 38.1MB in the end (delta: 39.6MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2023-12-02 12:22:20,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.05ms. Allocated memory is still 104.9MB. Free memory was 37.5MB in the beginning and 77.1MB in the end (delta: -39.6MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2023-12-02 12:22:20,318 INFO L158 Benchmark]: Boogie Preprocessor took 35.18ms. Allocated memory is still 104.9MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:22:20,318 INFO L158 Benchmark]: RCFGBuilder took 359.15ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 60.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 12:22:20,319 INFO L158 Benchmark]: TraceAbstraction took 932.91ms. Allocated memory is still 104.9MB. Free memory was 59.7MB in the beginning and 67.3MB in the end (delta: -7.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:20,319 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 104.9MB. Free memory is still 67.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:20,323 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 47.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1140.84ms. Allocated memory is still 104.9MB. Free memory was 77.7MB in the beginning and 38.1MB in the end (delta: 39.6MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.05ms. Allocated memory is still 104.9MB. Free memory was 37.5MB in the beginning and 77.1MB in the end (delta: -39.6MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.18ms. Allocated memory is still 104.9MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 359.15ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 60.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 932.91ms. Allocated memory is still 104.9MB. Free memory was 59.7MB in the beginning and 67.3MB in the end (delta: -7.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 104.9MB. Free memory is still 67.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet97 - 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 - UnprovableResult [Line: 1561]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1569. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int staticTrue = 1; [L1549] static int staticFalse = 0; [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}, staticFalse=0, staticTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_min_sub_05_bad() [L1552] int data; [L1553] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1554] COND TRUE \read(staticTrue) [L1556] data = (-0x7fffffff - 1) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1558] COND TRUE \read(staticTrue) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1561] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] - UnprovableResult [Line: 1561]: 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 12 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 2 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 could not prove your program: unable to determine feasibility of some traces [2023-12-02 12:22:20,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923bfcf-0203-4844-ba51-0ebbbf7caecb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample