./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_square_02_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_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_square_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91 --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 3ba06450c0e842f1722656ac0b21752c4b147ab62131bf93b66466ccf668c92a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:05:43,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:44,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-25 00:05:44,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:44,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:44,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:44,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:44,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:44,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:44,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:44,142 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:44,143 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:44,143 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:44,144 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:05:44,145 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:44,145 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:44,146 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:05:44,146 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:05:44,147 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:44,147 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:05:44,148 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:05:44,153 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:05:44,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:44,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:05:44,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:05:44,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:44,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:05:44,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:44,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:05:44,158 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:05:44,159 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:05:44,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:05:44,159 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:44,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:44,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:44,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:44,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:44,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:44,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:44,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:05:44,162 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:05:44,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:05:44,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:44,163 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:05:44,164 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:44,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:44,164 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_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ba06450c0e842f1722656ac0b21752c4b147ab62131bf93b66466ccf668c92a [2023-11-25 00:05:44,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:44,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:44,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:44,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:44,547 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:44,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_square_02_bad.i [2023-11-25 00:05:47,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:48,629 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:48,630 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_square_02_bad.i [2023-11-25 00:05:48,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/data/2d1a171b8/bb5f75ce215f451b920a532ed308a509/FLAG1d3156c1a [2023-11-25 00:05:48,678 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/data/2d1a171b8/bb5f75ce215f451b920a532ed308a509 [2023-11-25 00:05:48,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:48,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:48,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:48,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:48,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:48,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:48" (1/1) ... [2023-11-25 00:05:48,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2103f0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:48, skipping insertion in model container [2023-11-25 00:05:48,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:48" (1/1) ... [2023-11-25 00:05:48,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:50,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:50,733 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:05:50,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:51,138 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:51,138 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:51,138 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:51,139 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:51,147 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:05:51,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51 WrapperNode [2023-11-25 00:05:51,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:51,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:51,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:05:51,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:05:51,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,226 INFO L138 Inliner]: procedures = 936, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2023-11-25 00:05:51,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:51,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:05:51,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:05:51,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:05:51,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:05:51,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:05:51,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:05:51,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:05:51,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:51,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:51,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:05:51,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:05:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:05:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:05:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:05:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-25 00:05:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-25 00:05:51,373 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-25 00:05:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:05:51,541 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:05:51,542 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:05:51,669 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:05:51,719 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:05:51,720 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:05:51,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:51 BoogieIcfgContainer [2023-11-25 00:05:51,722 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:05:51,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:05:51,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:05:51,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:05:51,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:05:48" (1/3) ... [2023-11-25 00:05:51,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6886ff42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:51, skipping insertion in model container [2023-11-25 00:05:51,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (2/3) ... [2023-11-25 00:05:51,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6886ff42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:51, skipping insertion in model container [2023-11-25 00:05:51,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:51" (3/3) ... [2023-11-25 00:05:51,741 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_max_square_02_bad.i [2023-11-25 00:05:51,758 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:05:51,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:05:51,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:05:51,818 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;@3df09671, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:05:51,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:05:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-11-25 00:05:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:05:51,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:51,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-25 00:05:51,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-25 00:05:51,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:51,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2095953080, now seen corresponding path program 1 times [2023-11-25 00:05:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:51,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392562785] [2023-11-25 00:05:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:51,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:52,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392562785] [2023-11-25 00:05:52,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392562785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:52,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:52,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:05:52,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377656297] [2023-11-25 00:05:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:52,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:05:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:05:52,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:52,169 INFO L87 Difference]: Start difference. First operand has 13 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-25 00:05:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:52,199 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-11-25 00:05:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:05:52,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 6 [2023-11-25 00:05:52,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:52,213 INFO L225 Difference]: With dead ends: 19 [2023-11-25 00:05:52,214 INFO L226 Difference]: Without dead ends: 8 [2023-11-25 00:05:52,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:52,220 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:52,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:05:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-25 00:05:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-25 00:05:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2023-11-25 00:05:52,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2023-11-25 00:05:52,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 6 [2023-11-25 00:05:52,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:52,259 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2023-11-25 00:05:52,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-25 00:05:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2023-11-25 00:05:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:05:52,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:52,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:52,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:05:52,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-25 00:05:52,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash 550036094, now seen corresponding path program 1 times [2023-11-25 00:05:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:52,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830379488] [2023-11-25 00:05:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:52,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:52,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205345703] [2023-11-25 00:05:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:52,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:52,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:52,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:52,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:05:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:05:52,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:05:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:05:52,463 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:05:52,464 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:05:52,465 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-25 00:05:52,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-25 00:05:52,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:52,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:52,678 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-25 00:05:52,682 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:05:52,696 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet183 [2023-11-25 00:05:52,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:05:52 BoogieIcfgContainer [2023-11-25 00:05:52,705 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:05:52,706 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:05:52,707 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:05:52,707 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:05:52,708 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:51" (3/4) ... [2023-11-25 00:05:52,710 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:05:52,711 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:05:52,712 INFO L158 Benchmark]: Toolchain (without parser) took 4026.62ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 122.1MB in the beginning and 147.2MB in the end (delta: -25.1MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2023-11-25 00:05:52,713 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 161.5MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:05:52,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2458.83ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 121.7MB in the beginning and 108.1MB in the end (delta: 13.7MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. [2023-11-25 00:05:52,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.41ms. Allocated memory is still 211.8MB. Free memory was 108.1MB in the beginning and 103.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-25 00:05:52,715 INFO L158 Benchmark]: Boogie Preprocessor took 49.22ms. Allocated memory is still 211.8MB. Free memory was 103.9MB in the beginning and 102.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:05:52,718 INFO L158 Benchmark]: RCFGBuilder took 444.06ms. Allocated memory is still 211.8MB. Free memory was 102.8MB in the beginning and 89.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-25 00:05:52,718 INFO L158 Benchmark]: TraceAbstraction took 981.16ms. Allocated memory is still 211.8MB. Free memory was 88.1MB in the beginning and 147.9MB in the end (delta: -59.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:05:52,719 INFO L158 Benchmark]: Witness Printer took 5.31ms. Allocated memory is still 211.8MB. Free memory was 147.9MB in the beginning and 147.2MB in the end (delta: 683.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:05:52,727 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 161.5MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2458.83ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 121.7MB in the beginning and 108.1MB in the end (delta: 13.7MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.41ms. Allocated memory is still 211.8MB. Free memory was 108.1MB in the beginning and 103.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.22ms. Allocated memory is still 211.8MB. Free memory was 103.9MB in the beginning and 102.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.06ms. Allocated memory is still 211.8MB. Free memory was 102.8MB in the beginning and 89.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 981.16ms. Allocated memory is still 211.8MB. Free memory was 88.1MB in the beginning and 147.9MB in the end (delta: -59.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.31ms. Allocated memory is still 211.8MB. Free memory was 147.9MB in the beginning and 147.2MB in the end (delta: 683.0kB). 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~nondet183 - 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: 1843]: 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 1851. 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); [L1851] 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}] [L1414] COND TRUE line != ((void *)0) [L1851] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:14}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1852] CALL CWE190_Integer_Overflow__int_max_square_02_bad() [L1834] int data; [L1835] data = 0 [L1838] data = 0x7fffffff VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1843] data * data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1843]: 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, 13 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-25 00:05:52,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_square_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91 --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 3ba06450c0e842f1722656ac0b21752c4b147ab62131bf93b66466ccf668c92a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:05:55,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:55,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-25 00:05:55,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:55,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:55,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:55,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:55,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:55,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:55,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:55,678 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:55,679 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:55,679 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:55,681 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:55,682 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:55,682 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:55,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:55,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:05:55,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:55,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:05:55,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:55,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:05:55,687 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:05:55,687 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:05:55,688 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:05:55,688 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:05:55,688 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:05:55,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:05:55,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:55,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:55,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:05:55,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:55,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:55,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:55,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:55,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:55,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:05:55,694 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:05:55,694 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:05:55,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:55,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:05:55,696 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:55,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:55,697 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_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ba06450c0e842f1722656ac0b21752c4b147ab62131bf93b66466ccf668c92a [2023-11-25 00:05:56,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:56,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:56,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:56,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:56,132 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:56,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_square_02_bad.i [2023-11-25 00:05:59,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:59,810 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:59,811 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_square_02_bad.i [2023-11-25 00:05:59,852 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/data/daf3cdd0c/73df24a5bf684949ade398ea88be0571/FLAGe65dd824d [2023-11-25 00:05:59,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/data/daf3cdd0c/73df24a5bf684949ade398ea88be0571 [2023-11-25 00:05:59,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:59,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:59,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:59,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:59,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:59,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb91f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59, skipping insertion in model container [2023-11-25 00:05:59,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:06:01,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:01,826 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:06:01,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:02,222 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:02,223 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:02,223 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:02,223 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:02,231 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:06:02,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02 WrapperNode [2023-11-25 00:06:02,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:02,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:02,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:06:02,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:06:02,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,314 INFO L138 Inliner]: procedures = 941, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2023-11-25 00:06:02,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:02,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:06:02,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:06:02,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:06:02,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:06:02,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:06:02,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:06:02,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:06:02,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (1/1) ... [2023-11-25 00:06:02,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:02,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:02,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:06:02,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:06:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:06:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:06:02,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:06:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-25 00:06:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-25 00:06:02,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-25 00:06:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:06:02,705 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:02,709 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:04,755 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:04,823 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:04,824 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:06:04,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:04 BoogieIcfgContainer [2023-11-25 00:06:04,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:04,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:04,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:04,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:04,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:05:59" (1/3) ... [2023-11-25 00:06:04,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58163ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:04, skipping insertion in model container [2023-11-25 00:06:04,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:02" (2/3) ... [2023-11-25 00:06:04,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58163ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:04, skipping insertion in model container [2023-11-25 00:06:04,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:04" (3/3) ... [2023-11-25 00:06:04,836 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_max_square_02_bad.i [2023-11-25 00:06:04,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:04,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:06:04,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:04,898 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;@1af58144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:04,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:06:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 12 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) [2023-11-25 00:06:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:06:04,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:04,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:04,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-25 00:06:04,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1417393907, now seen corresponding path program 1 times [2023-11-25 00:06:04,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:04,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887190303] [2023-11-25 00:06:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:04,931 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 [2023-11-25 00:06:04,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:04,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:06:04,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:05,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:06:05,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:05,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:05,092 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887190303] [2023-11-25 00:06:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887190303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:05,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:05,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:06:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424728416] [2023-11-25 00:06:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:05,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:06:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:05,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:06:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:06:05,132 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 12 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-25 00:06:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:05,979 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2023-11-25 00:06:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:06:05,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 9 [2023-11-25 00:06:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:05,990 INFO L225 Difference]: With dead ends: 28 [2023-11-25 00:06:05,990 INFO L226 Difference]: Without dead ends: 12 [2023-11-25 00:06:05,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:06:05,997 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:05,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:06:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-25 00:06:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-25 00:06:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-11-25 00:06:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-25 00:06:06,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2023-11-25 00:06:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:06,035 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-25 00:06:06,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-25 00:06:06,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-25 00:06:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:06:06,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:06,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:06,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:06,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-25 00:06:06,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1417393845, now seen corresponding path program 1 times [2023-11-25 00:06:06,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:06,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074212040] [2023-11-25 00:06:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:06,244 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 [2023-11-25 00:06:06,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:06,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:06:06,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:06,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:06:06,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:06,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:06,404 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:06,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074212040] [2023-11-25 00:06:06,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074212040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:06,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:06,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:06:06,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409511920] [2023-11-25 00:06:06,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:06:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:06,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:06:06,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:06:06,410 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-25 00:06:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:06,481 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-11-25 00:06:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:06:06,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 9 [2023-11-25 00:06:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:06,488 INFO L225 Difference]: With dead ends: 12 [2023-11-25 00:06:06,489 INFO L226 Difference]: Without dead ends: 11 [2023-11-25 00:06:06,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:06:06,491 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:06,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:06:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-25 00:06:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-25 00:06:06,498 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) [2023-11-25 00:06:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-25 00:06:06,500 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2023-11-25 00:06:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:06,501 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-25 00:06:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-25 00:06:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-25 00:06:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:06:06,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:06,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:06,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:06,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:06,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-25 00:06:06,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:06,709 INFO L85 PathProgramCache]: Analyzing trace with hash 989536289, now seen corresponding path program 1 times [2023-11-25 00:06:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:06,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532328061] [2023-11-25 00:06:06,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:06,710 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 [2023-11-25 00:06:06,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:06,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:06:06,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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 (4)] Waiting until timeout for monitored process [2023-11-25 00:06:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:06:06,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:06:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:06:06,911 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-25 00:06:06,911 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:06:06,912 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-25 00:06:06,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-25 00:06:06,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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 (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:07,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:07,119 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-25 00:06:07,123 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:06:07,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet181 [2023-11-25 00:06:07,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:06:07 BoogieIcfgContainer [2023-11-25 00:06:07,148 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:06:07,149 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:06:07,149 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:06:07,149 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:06:07,150 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:04" (3/4) ... [2023-11-25 00:06:07,152 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:06:07,153 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:06:07,154 INFO L158 Benchmark]: Toolchain (without parser) took 7276.15ms. Allocated memory was 67.1MB in the beginning and 107.0MB in the end (delta: 39.8MB). Free memory was 44.6MB in the beginning and 62.1MB in the end (delta: -17.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,155 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 42.5MB in the beginning and 42.5MB in the end (delta: 61.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2349.47ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 44.4MB in the beginning and 49.0MB in the end (delta: -4.6MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.12ms. Allocated memory is still 88.1MB. Free memory was 49.0MB in the beginning and 44.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,157 INFO L158 Benchmark]: Boogie Preprocessor took 48.91ms. Allocated memory is still 88.1MB. Free memory was 44.9MB in the beginning and 43.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,157 INFO L158 Benchmark]: RCFGBuilder took 2459.04ms. Allocated memory is still 88.1MB. Free memory was 42.8MB in the beginning and 54.1MB in the end (delta: -11.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,158 INFO L158 Benchmark]: TraceAbstraction took 2318.85ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.1MB in the beginning and 62.6MB in the end (delta: -9.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,159 INFO L158 Benchmark]: Witness Printer took 4.80ms. Allocated memory is still 107.0MB. Free memory was 62.6MB in the beginning and 62.1MB in the end (delta: 569.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:07,162 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 42.5MB in the beginning and 42.5MB in the end (delta: 61.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2349.47ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 44.4MB in the beginning and 49.0MB in the end (delta: -4.6MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.12ms. Allocated memory is still 88.1MB. Free memory was 49.0MB in the beginning and 44.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.91ms. Allocated memory is still 88.1MB. Free memory was 44.9MB in the beginning and 43.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2459.04ms. Allocated memory is still 88.1MB. Free memory was 42.8MB in the beginning and 54.1MB in the end (delta: -11.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2318.85ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.1MB in the beginning and 62.6MB in the end (delta: -9.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Witness Printer took 4.80ms. Allocated memory is still 107.0MB. Free memory was 62.6MB in the beginning and 62.1MB in the end (delta: 569.1kB). 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~nondet181 - 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: 1843]: 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 1851. 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); [L1851] 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}] [L1414] COND TRUE line != ((void *)0) [L1851] 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] [L1852] CALL CWE190_Integer_Overflow__int_max_square_02_bad() [L1834] int data; [L1835] 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] [L1838] data = 0x7fffffff VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1843] data * data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1843]: 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 22 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2023-11-25 00:06:07,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2b1afc-9a8d-4df3-bd1b-6f04aa11fd5b/bin/utaipan-verify-SwPr7d2a91/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