./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_08_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_08_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2 --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 2977efd2d5ad4d675080b4eb7ad25e4e139daa92bd76e63bdcb184ae91de9ac9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:26:47,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:26:47,173 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-02 12:26:47,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:26:47,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:26:47,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:26:47,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:26:47,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:26:47,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:26:47,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:26:47,225 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:26:47,225 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:26:47,226 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:26:47,226 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:26:47,229 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:26:47,229 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:26:47,230 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:26:47,230 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:26:47,230 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:26:47,231 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:26:47,231 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:26:47,235 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:26:47,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:26:47,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:26:47,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:26:47,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:26:47,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:26:47,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:26:47,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:26:47,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:26:47,240 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:26:47,241 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:26:47,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:26:47,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:26:47,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:26:47,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:26:47,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:26:47,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:47,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:26:47,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:26:47,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:26:47,245 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:26:47,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:26:47,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:26:47,246 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:26:47,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:26:47,248 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_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2977efd2d5ad4d675080b4eb7ad25e4e139daa92bd76e63bdcb184ae91de9ac9 [2024-11-02 12:26:47,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:26:47,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:26:47,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:26:47,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:26:47,610 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:26:47,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_08_good.i Unable to find full path for "g++" [2024-11-02 12:26:50,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:26:50,494 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:26:50,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_08_good.i [2024-11-02 12:26:50,523 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/data/2a1ea88fc/ff26641d179944eb90bd73e746104169/FLAGcd38cd583 [2024-11-02 12:26:50,643 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/data/2a1ea88fc/ff26641d179944eb90bd73e746104169 [2024-11-02 12:26:50,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:26:50,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:26:50,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:50,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:26:50,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:26:50,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:50" (1/1) ... [2024-11-02 12:26:50,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b85456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:50, skipping insertion in model container [2024-11-02 12:26:50,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:50" (1/1) ... [2024-11-02 12:26:50,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:26:51,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:51,887 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:26:52,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:52,220 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:26:52,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52 WrapperNode [2024-11-02 12:26:52,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:52,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:52,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:26:52,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:26:52,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,291 INFO L138 Inliner]: procedures = 503, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 237 [2024-11-02 12:26:52,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:52,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:26:52,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:26:52,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:26:52,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:26:52,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:26:52,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:26:52,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:26:52,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (1/1) ... [2024-11-02 12:26:52,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:52,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:52,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:26:52,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:26:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2024-11-02 12:26:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2024-11-02 12:26:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-02 12:26:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-02 12:26:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:26:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:26:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:26:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2024-11-02 12:26:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2024-11-02 12:26:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsFalse [2024-11-02 12:26:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsFalse [2024-11-02 12:26:52,581 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:26:52,583 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:26:53,099 INFO L? ?]: Removed 100 outVars from TransFormulas that were not future-live. [2024-11-02 12:26:53,100 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:26:53,520 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:26:53,521 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:26:53,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:53 BoogieIcfgContainer [2024-11-02 12:26:53,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:26:53,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:26:53,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:26:53,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:26:53,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:26:50" (1/3) ... [2024-11-02 12:26:53,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4baff0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:53, skipping insertion in model container [2024-11-02 12:26:53,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:52" (2/3) ... [2024-11-02 12:26:53,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4baff0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:53, skipping insertion in model container [2024-11-02 12:26:53,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:53" (3/3) ... [2024-11-02 12:26:53,532 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_sub_08_good.i [2024-11-02 12:26:53,554 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:26:53,554 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-02 12:26:53,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:26:53,643 INFO L333 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, 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;@68e8ad60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:26:53,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-02 12:26:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 50 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-02 12:26:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:26:53,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:53,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:53,658 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 12:26:53,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1629929850, now seen corresponding path program 1 times [2024-11-02 12:26:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316923545] [2024-11-02 12:26:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:53,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:54,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316923545] [2024-11-02 12:26:54,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316923545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:54,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:54,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:26:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644950574] [2024-11-02 12:26:54,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:54,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:54,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:54,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:54,110 INFO L87 Difference]: Start difference. First operand has 73 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 50 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:26:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:54,220 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-11-02 12:26:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:54,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2024-11-02 12:26:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:54,231 INFO L225 Difference]: With dead ends: 73 [2024-11-02 12:26:54,231 INFO L226 Difference]: Without dead ends: 66 [2024-11-02 12:26:54,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:54,239 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 1 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:54,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 153 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-02 12:26:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-02 12:26:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 45 states have internal predecessors, (51), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-02 12:26:54,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2024-11-02 12:26:54,294 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 16 [2024-11-02 12:26:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:54,296 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2024-11-02 12:26:54,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:26:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2024-11-02 12:26:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:26:54,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:54,298 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:54,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:26:54,299 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 12:26:54,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:54,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1011782351, now seen corresponding path program 1 times [2024-11-02 12:26:54,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:54,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469373240] [2024-11-02 12:26:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:54,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:54,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:54,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469373240] [2024-11-02 12:26:54,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469373240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:54,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:54,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:26:54,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655271383] [2024-11-02 12:26:54,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:54,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:26:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:26:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:26:54,725 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 5 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:26:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:54,827 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2024-11-02 12:26:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:26:54,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2024-11-02 12:26:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:54,832 INFO L225 Difference]: With dead ends: 67 [2024-11-02 12:26:54,832 INFO L226 Difference]: Without dead ends: 66 [2024-11-02 12:26:54,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:26:54,834 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 2 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:54,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 270 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-02 12:26:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-02 12:26:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 44 states have internal predecessors, (50), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-02 12:26:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2024-11-02 12:26:54,855 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 17 [2024-11-02 12:26:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:54,856 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2024-11-02 12:26:54,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:26:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2024-11-02 12:26:54,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:26:54,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:54,858 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:54,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:26:54,858 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 12:26:54,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash -586421153, now seen corresponding path program 1 times [2024-11-02 12:26:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404880381] [2024-11-02 12:26:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 12:26:54,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404880381] [2024-11-02 12:26:54,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404880381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:54,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:54,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:26:54,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001804224] [2024-11-02 12:26:54,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:54,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:26:54,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:54,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:26:54,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:26:54,999 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-02 12:26:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:55,070 INFO L93 Difference]: Finished difference Result 113 states and 139 transitions. [2024-11-02 12:26:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:26:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2024-11-02 12:26:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:55,072 INFO L225 Difference]: With dead ends: 113 [2024-11-02 12:26:55,072 INFO L226 Difference]: Without dead ends: 63 [2024-11-02 12:26:55,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:26:55,074 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:55,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-02 12:26:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-02 12:26:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.263157894736842) internal successors, (48), 43 states have internal predecessors, (48), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-02 12:26:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-02 12:26:55,083 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 30 [2024-11-02 12:26:55,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:55,084 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-02 12:26:55,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-02 12:26:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-02 12:26:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-02 12:26:55,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:55,086 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:55,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:26:55,086 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 12:26:55,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:55,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1085760571, now seen corresponding path program 1 times [2024-11-02 12:26:55,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:55,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991263381] [2024-11-02 12:26:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:55,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 12:26:55,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:55,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991263381] [2024-11-02 12:26:55,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991263381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:55,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:55,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:26:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560780436] [2024-11-02 12:26:55,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:55,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:55,206 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 12:26:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:55,266 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-11-02 12:26:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:55,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 31 [2024-11-02 12:26:55,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:55,268 INFO L225 Difference]: With dead ends: 63 [2024-11-02 12:26:55,270 INFO L226 Difference]: Without dead ends: 62 [2024-11-02 12:26:55,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:55,272 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 1 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:55,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:55,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-02 12:26:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-02 12:26:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.236842105263158) internal successors, (47), 42 states have internal predecessors, (47), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-02 12:26:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-11-02 12:26:55,289 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 31 [2024-11-02 12:26:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:55,290 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-11-02 12:26:55,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 12:26:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-11-02 12:26:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 12:26:55,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:55,294 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:55,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:26:55,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 12:26:55,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -701160411, now seen corresponding path program 1 times [2024-11-02 12:26:55,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:55,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138214715] [2024-11-02 12:26:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:55,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:26:55,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:55,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138214715] [2024-11-02 12:26:55,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138214715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:55,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486811980] [2024-11-02 12:26:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:55,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:55,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:55,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f926ea-270a-452a-8622-01c198df3637/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:26:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:55,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:26:55,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:26:58,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:27:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:27:00,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486811980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:27:00,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253983522] [2024-11-02 12:27:00,486 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-02 12:27:00,487 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:27:00,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:27:00,496 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:27:00,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:27:16,095 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 24 for LOIs [2024-11-02 12:27:16,099 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 229 for LOIs [2024-11-02 12:27:16,367 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 242 for LOIs [2024-11-02 12:27:16,843 INFO L180 IcfgInterpreter]: Interpretation finished