./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 991fb09b573d5827d0db553f1ea89a581f5a664ba8b68d6f14a043df738f2f6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:01,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:01,326 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:15:01,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:01,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:01,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:01,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:01,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:01,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:01,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:01,380 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:01,381 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:01,381 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:01,383 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:01,384 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:01,384 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:01,385 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:01,385 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:01,385 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:01,386 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:01,386 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:01,387 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:01,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:01,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:01,389 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:15:01,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:01,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:15:01,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:01,391 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:01,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:01,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:01,393 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:15:01,394 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:15:01,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:15:01,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:01,394 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:01,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:01,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:01,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:01,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:01,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:01,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:01,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:01,397 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:01,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:01,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:01,398 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:01,398 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:01,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:01,399 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_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 991fb09b573d5827d0db553f1ea89a581f5a664ba8b68d6f14a043df738f2f6d [2023-11-23 21:15:01,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:01,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:01,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:01,785 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:01,786 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:01,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i [2023-11-23 21:15:04,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:05,095 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:05,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i [2023-11-23 21:15:05,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/data/0c9106558/799e553fa2864aadb3a67778e275d267/FLAGbac119f0d [2023-11-23 21:15:05,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/data/0c9106558/799e553fa2864aadb3a67778e275d267 [2023-11-23 21:15:05,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:05,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:05,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:05,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:05,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:05,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be9144e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05, skipping insertion in model container [2023-11-23 21:15:05,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,219 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:05,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:05,636 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:05,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:05,760 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:05,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05 WrapperNode [2023-11-23 21:15:05,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:05,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:05,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:05,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:05,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,868 INFO L138 Inliner]: procedures = 119, calls = 23, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 175 [2023-11-23 21:15:05,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:05,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:05,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:05,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:05,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,921 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,926 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:05,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:05,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:05,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:05,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:05,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:05,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:05,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:06,146 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:06,148 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:06,490 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:06,582 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:06,582 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 21:15:06,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:06 BoogieIcfgContainer [2023-11-23 21:15:06,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:06,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:06,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:06,594 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:06,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:05" (1/3) ... [2023-11-23 21:15:06,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e1baaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:06, skipping insertion in model container [2023-11-23 21:15:06,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05" (2/3) ... [2023-11-23 21:15:06,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e1baaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:06, skipping insertion in model container [2023-11-23 21:15:06,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:06" (3/3) ... [2023-11-23 21:15:06,599 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrstr-alloca-2.i [2023-11-23 21:15:06,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:06,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-23 21:15:06,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:06,668 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;@4e6476b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:06,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-23 21:15:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:15:06,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:06,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:15:06,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:06,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash 198023, now seen corresponding path program 1 times [2023-11-23 21:15:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:06,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678019742] [2023-11-23 21:15:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:07,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:07,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678019742] [2023-11-23 21:15:07,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678019742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:07,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:07,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:07,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965779081] [2023-11-23 21:15:07,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:07,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:07,091 INFO L87 Difference]: Start difference. First operand has 44 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:07,176 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2023-11-23 21:15:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 21:15:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:07,187 INFO L225 Difference]: With dead ends: 69 [2023-11-23 21:15:07,187 INFO L226 Difference]: Without dead ends: 22 [2023-11-23 21:15:07,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:07,195 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:07,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-23 21:15:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-23 21:15:07,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-11-23 21:15:07,231 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 3 [2023-11-23 21:15:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:07,232 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-11-23 21:15:07,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-11-23 21:15:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:15:07,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:07,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:15:07,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:07,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:07,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash 6158318, now seen corresponding path program 1 times [2023-11-23 21:15:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:07,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036850554] [2023-11-23 21:15:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:07,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:07,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:07,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036850554] [2023-11-23 21:15:07,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036850554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:07,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:07,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:07,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205090030] [2023-11-23 21:15:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:07,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:07,399 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:07,464 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2023-11-23 21:15:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:07,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:15:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:07,467 INFO L225 Difference]: With dead ends: 27 [2023-11-23 21:15:07,467 INFO L226 Difference]: Without dead ends: 25 [2023-11-23 21:15:07,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:07,474 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:07,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:07,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-23 21:15:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-23 21:15:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-11-23 21:15:07,489 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 4 [2023-11-23 21:15:07,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:07,489 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-11-23 21:15:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-11-23 21:15:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:15:07,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:07,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:15:07,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:15:07,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:07,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:07,493 INFO L85 PathProgramCache]: Analyzing trace with hash 6158512, now seen corresponding path program 1 times [2023-11-23 21:15:07,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:07,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602716112] [2023-11-23 21:15:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:07,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:07,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:07,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602716112] [2023-11-23 21:15:07,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602716112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:07,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:07,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:15:07,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395358612] [2023-11-23 21:15:07,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:07,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:07,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:07,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:07,669 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:07,702 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2023-11-23 21:15:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:15:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:07,705 INFO L225 Difference]: With dead ends: 25 [2023-11-23 21:15:07,705 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 21:15:07,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:07,707 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:07,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:07,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 21:15:07,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 21:15:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-11-23 21:15:07,713 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 4 [2023-11-23 21:15:07,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:07,713 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-11-23 21:15:07,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-11-23 21:15:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:15:07,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:07,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:15:07,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:15:07,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:07,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash 190913957, now seen corresponding path program 1 times [2023-11-23 21:15:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:07,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425514617] [2023-11-23 21:15:07,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:07,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:07,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425514617] [2023-11-23 21:15:07,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425514617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:07,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:07,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876603020] [2023-11-23 21:15:07,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:07,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:07,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:07,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:07,818 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:07,853 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-11-23 21:15:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:07,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 21:15:07,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:07,855 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:15:07,855 INFO L226 Difference]: Without dead ends: 38 [2023-11-23 21:15:07,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:07,857 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:07,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-23 21:15:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-11-23 21:15:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.56) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-11-23 21:15:07,865 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 5 [2023-11-23 21:15:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:07,865 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-11-23 21:15:07,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-11-23 21:15:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:15:07,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:07,866 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:15:07,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:15:07,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:07,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1604398419, now seen corresponding path program 1 times [2023-11-23 21:15:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710585040] [2023-11-23 21:15:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:07,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:07,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710585040] [2023-11-23 21:15:07,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710585040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:07,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526613586] [2023-11-23 21:15:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:07,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:07,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:07,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:07,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:15:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:08,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:08,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:08,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526613586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:08,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:15:08,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 21:15:08,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898587610] [2023-11-23 21:15:08,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:08,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:15:08,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:08,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:15:08,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:15:08,161 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:08,223 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2023-11-23 21:15:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:15:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:15:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:08,227 INFO L225 Difference]: With dead ends: 32 [2023-11-23 21:15:08,227 INFO L226 Difference]: Without dead ends: 31 [2023-11-23 21:15:08,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:15:08,232 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:08,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-23 21:15:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-23 21:15:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.52) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-23 21:15:08,250 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 6 [2023-11-23 21:15:08,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:08,250 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-23 21:15:08,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-23 21:15:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:15:08,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:08,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:15:08,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:08,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:08,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1623365458, now seen corresponding path program 1 times [2023-11-23 21:15:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:08,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141473941] [2023-11-23 21:15:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:08,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:08,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:08,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141473941] [2023-11-23 21:15:08,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141473941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:08,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:08,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:15:08,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463279595] [2023-11-23 21:15:08,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:08,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:08,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:08,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:08,586 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:08,606 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2023-11-23 21:15:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:15:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:08,609 INFO L225 Difference]: With dead ends: 31 [2023-11-23 21:15:08,609 INFO L226 Difference]: Without dead ends: 30 [2023-11-23 21:15:08,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:08,615 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:08,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-23 21:15:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-23 21:15:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.48) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2023-11-23 21:15:08,634 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 6 [2023-11-23 21:15:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:08,634 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2023-11-23 21:15:08,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2023-11-23 21:15:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:15:08,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:08,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 21:15:08,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:15:08,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:08,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1803256504, now seen corresponding path program 1 times [2023-11-23 21:15:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:08,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972472342] [2023-11-23 21:15:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:08,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:08,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972472342] [2023-11-23 21:15:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972472342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215864273] [2023-11-23 21:15:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:08,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:08,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:08,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:08,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:15:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:08,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:08,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:08,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:08,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215864273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:08,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1233894921] [2023-11-23 21:15:08,966 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-11-23 21:15:08,967 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:08,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:08,976 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:08,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:15:10,406 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:10,802 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '596#(and (<= 2 |ULTIMATE.start_main_~nondetString2~0#1.base|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 0 (+ 128 (select (select |#memory_int| |ULTIMATE.start_main_~nondetString1~0#1.base|) |ULTIMATE.start_main_~i~0#1|))) (= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (exists ((|v_#memory_int_27| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_27| |ULTIMATE.start_main_~nondetString1~0#1.base| (store (select |v_#memory_int_27| |ULTIMATE.start_main_~nondetString1~0#1.base|) |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~nondetString1~0#1.base|) |ULTIMATE.start_main_~i~0#1|))))) (= |ULTIMATE.start_main_#t~malloc23#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_#t~post24#1|) (<= 2 |ULTIMATE.start_main_#t~malloc22#1.base|) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) |ULTIMATE.start_main_~length1~0#1|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~nondetString1~0#1.base|) |ULTIMATE.start_main_~i~0#1|) 127) (= |ULTIMATE.start_main_#t~malloc22#1.offset| 0) (<= 2147483647 |ULTIMATE.start_main_#t~post24#1|) (<= 2 |ULTIMATE.start_main_~nondetString1~0#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc23#1.base|))' at error location [2023-11-23 21:15:10,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:15:10,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:15:10,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 21:15:10,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099390863] [2023-11-23 21:15:10,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:10,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:15:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:15:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:15:10,806 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:10,912 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2023-11-23 21:15:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:15:10,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:15:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:10,918 INFO L225 Difference]: With dead ends: 40 [2023-11-23 21:15:10,918 INFO L226 Difference]: Without dead ends: 39 [2023-11-23 21:15:10,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:15:10,920 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:10,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 49 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-23 21:15:10,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-23 21:15:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-11-23 21:15:10,933 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 7 [2023-11-23 21:15:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:10,934 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-11-23 21:15:10,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:10,934 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-11-23 21:15:10,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:15:10,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:10,935 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-23 21:15:10,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:11,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:11,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:11,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1221062197, now seen corresponding path program 1 times [2023-11-23 21:15:11,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:11,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532692098] [2023-11-23 21:15:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:11,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:11,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532692098] [2023-11-23 21:15:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532692098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482558132] [2023-11-23 21:15:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:11,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:11,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:11,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:11,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:15:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:11,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:11,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:11,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:11,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482558132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:11,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:15:11,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 21:15:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386630869] [2023-11-23 21:15:11,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:11,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:15:11,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:11,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:15:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:15:11,332 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:11,391 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-23 21:15:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:15:11,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:15:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:11,394 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:15:11,394 INFO L226 Difference]: Without dead ends: 38 [2023-11-23 21:15:11,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:15:11,396 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:11,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-23 21:15:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-23 21:15:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2023-11-23 21:15:11,408 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 7 [2023-11-23 21:15:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:11,408 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2023-11-23 21:15:11,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-11-23 21:15:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:15:11,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:11,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:11,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:11,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:11,630 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:11,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1215278265, now seen corresponding path program 1 times [2023-11-23 21:15:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:11,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658899149] [2023-11-23 21:15:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:11,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658899149] [2023-11-23 21:15:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658899149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:11,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:11,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:11,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430202811] [2023-11-23 21:15:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:11,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:11,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:11,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:11,667 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:11,691 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2023-11-23 21:15:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:11,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:15:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:11,692 INFO L225 Difference]: With dead ends: 46 [2023-11-23 21:15:11,692 INFO L226 Difference]: Without dead ends: 41 [2023-11-23 21:15:11,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:11,693 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:11,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-23 21:15:11,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-11-23 21:15:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2023-11-23 21:15:11,698 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 7 [2023-11-23 21:15:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:11,698 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2023-11-23 21:15:11,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,699 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2023-11-23 21:15:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:15:11,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:11,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:11,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:15:11,700 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:11,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -65764751, now seen corresponding path program 1 times [2023-11-23 21:15:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:11,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952640575] [2023-11-23 21:15:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:11,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:11,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:11,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952640575] [2023-11-23 21:15:11,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952640575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:11,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:11,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:15:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670400723] [2023-11-23 21:15:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:11,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:11,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:11,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:11,745 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:11,758 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2023-11-23 21:15:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:11,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:15:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:11,759 INFO L225 Difference]: With dead ends: 40 [2023-11-23 21:15:11,759 INFO L226 Difference]: Without dead ends: 37 [2023-11-23 21:15:11,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:11,760 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:11,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-23 21:15:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2023-11-23 21:15:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-23 21:15:11,764 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 8 [2023-11-23 21:15:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:11,764 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-23 21:15:11,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-23 21:15:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:15:11,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:11,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-23 21:15:11,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:15:11,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:11,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 801777634, now seen corresponding path program 1 times [2023-11-23 21:15:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328724687] [2023-11-23 21:15:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:11,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:11,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328724687] [2023-11-23 21:15:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328724687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325985748] [2023-11-23 21:15:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:11,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:11,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:11,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:15:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:11,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:11,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:11,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:11,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325985748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:11,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [318388754] [2023-11-23 21:15:11,987 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-23 21:15:11,987 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:11,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:11,988 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:11,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:15:12,041 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [318388754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:12,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:15:12,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5] total 13 [2023-11-23 21:15:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382379160] [2023-11-23 21:15:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:12,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:12,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:15:12,196 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:12,240 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2023-11-23 21:15:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:15:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:12,241 INFO L225 Difference]: With dead ends: 41 [2023-11-23 21:15:12,241 INFO L226 Difference]: Without dead ends: 29 [2023-11-23 21:15:12,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:15:12,242 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:12,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-23 21:15:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-23 21:15:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-11-23 21:15:12,247 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 8 [2023-11-23 21:15:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:12,247 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-11-23 21:15:12,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-11-23 21:15:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:15:12,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:12,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:12,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 21:15:12,459 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:12,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash -871825514, now seen corresponding path program 1 times [2023-11-23 21:15:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:12,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534635498] [2023-11-23 21:15:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:12,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:12,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534635498] [2023-11-23 21:15:12,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534635498] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:12,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126405227] [2023-11-23 21:15:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:12,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:12,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:12,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:12,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:15:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:12,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:12,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:12,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:12,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126405227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [986276531] [2023-11-23 21:15:12,730 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 21:15:12,731 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:12,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:12,732 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:12,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:15:14,284 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:14,608 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1238#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post26#1|) (<= 1 |ULTIMATE.start_main_~length2~0#1|))' at error location [2023-11-23 21:15:14,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:15:14,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:15:14,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-23 21:15:14,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253852712] [2023-11-23 21:15:14,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:14,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:15:14,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:14,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:15:14,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:15:14,611 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:14,714 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-11-23 21:15:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:15:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 21:15:14,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:14,715 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:15:14,715 INFO L226 Difference]: Without dead ends: 38 [2023-11-23 21:15:14,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-11-23 21:15:14,716 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:14,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 45 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:15:14,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-23 21:15:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-23 21:15:14,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2023-11-23 21:15:14,721 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 11 [2023-11-23 21:15:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:14,722 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2023-11-23 21:15:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2023-11-23 21:15:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:15:14,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:14,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:14,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:14,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:15:14,949 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:14,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:14,949 INFO L85 PathProgramCache]: Analyzing trace with hash -299906306, now seen corresponding path program 1 times [2023-11-23 21:15:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972513951] [2023-11-23 21:15:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:14,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:15:15,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:15,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972513951] [2023-11-23 21:15:15,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972513951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:15,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:15,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:15:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619816338] [2023-11-23 21:15:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:15,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:15,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:15,019 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:15,032 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2023-11-23 21:15:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-23 21:15:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:15,033 INFO L225 Difference]: With dead ends: 38 [2023-11-23 21:15:15,033 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 21:15:15,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:15,035 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:15,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 21:15:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-23 21:15:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-11-23 21:15:15,052 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 13 [2023-11-23 21:15:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:15,052 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-11-23 21:15:15,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-11-23 21:15:15,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:15:15,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:15,055 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1] [2023-11-23 21:15:15,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:15:15,055 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:15,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 493974164, now seen corresponding path program 2 times [2023-11-23 21:15:15,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:15,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132592882] [2023-11-23 21:15:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:15,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132592882] [2023-11-23 21:15:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132592882] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361714369] [2023-11-23 21:15:15,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:15:15,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:15,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:15,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:15:15,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 21:15:15,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:15:15,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:15,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:15:15,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:15:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361714369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [254362109] [2023-11-23 21:15:15,475 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-11-23 21:15:15,475 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:15,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:15,475 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:15,476 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:15:16,135 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:16,529 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1548#(and (<= 2 |ULTIMATE.start_main_~nondetString2~0#1.base|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 0 (+ 128 (select (select |#memory_int| |ULTIMATE.start_main_~nondetString1~0#1.base|) |ULTIMATE.start_main_~i~0#1|))) (= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc23#1.offset| 0) (exists ((|v_#memory_int_49| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_49| |ULTIMATE.start_main_~nondetString1~0#1.base| (store (select |v_#memory_int_49| |ULTIMATE.start_main_~nondetString1~0#1.base|) |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~nondetString1~0#1.base|) |ULTIMATE.start_main_~i~0#1|))))) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_#t~post24#1|) (<= 2 |ULTIMATE.start_main_#t~malloc22#1.base|) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) |ULTIMATE.start_main_~length1~0#1|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~nondetString1~0#1.base|) |ULTIMATE.start_main_~i~0#1|) 127) (= |ULTIMATE.start_main_#t~malloc22#1.offset| 0) (<= 2147483647 |ULTIMATE.start_main_#t~post24#1|) (<= 2 |ULTIMATE.start_main_~nondetString1~0#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc23#1.base|))' at error location [2023-11-23 21:15:16,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:15:16,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:15:16,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-23 21:15:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471991644] [2023-11-23 21:15:16,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:16,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 21:15:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 21:15:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:15:16,531 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:16,752 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-11-23 21:15:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:15:16,753 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-23 21:15:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:16,754 INFO L225 Difference]: With dead ends: 36 [2023-11-23 21:15:16,754 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 21:15:16,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-11-23 21:15:16,755 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:16,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 21:15:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2023-11-23 21:15:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-11-23 21:15:16,760 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2023-11-23 21:15:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:16,760 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-11-23 21:15:16,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-11-23 21:15:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:15:16,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:16,762 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:16,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:16,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 21:15:16,973 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 21:15:16,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:16,973 INFO L85 PathProgramCache]: Analyzing trace with hash -920040661, now seen corresponding path program 2 times [2023-11-23 21:15:16,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:16,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048408066] [2023-11-23 21:15:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:16,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:17,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:17,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048408066] [2023-11-23 21:15:17,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048408066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:17,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737959475] [2023-11-23 21:15:17,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:15:17,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:17,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:17,201 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:17,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:15:17,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 21:15:17,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:15:17,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:17,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 21:15:17,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 21:15:17,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737959475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:17,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2012284388] [2023-11-23 21:15:17,454 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 21:15:17,454 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:17,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:17,454 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:17,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:15:18,571 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:19,160 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1777#(and (= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post26#1|) (= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (= |ULTIMATE.start_main_#t~malloc23#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc22#1.offset| 0))' at error location [2023-11-23 21:15:19,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:15:19,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:15:19,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 14 [2023-11-23 21:15:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324759251] [2023-11-23 21:15:19,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:19,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 21:15:19,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 21:15:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-11-23 21:15:19,163 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:19,395 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-11-23 21:15:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:15:19,396 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-23 21:15:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:19,396 INFO L225 Difference]: With dead ends: 24 [2023-11-23 21:15:19,396 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:15:19,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2023-11-23 21:15:19,398 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:19,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 12 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:15:19,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:15:19,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:15:19,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-11-23 21:15:19,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:19,400 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:15:19,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:19,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:15:19,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:15:19,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-11-23 21:15:19,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-23 21:15:19,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-23 21:15:19,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-23 21:15:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-23 21:15:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-23 21:15:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-23 21:15:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-23 21:15:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-23 21:15:19,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-11-23 21:15:19,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:19,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:19,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:15:19,883 INFO L899 garLoopResultBuilder]: For program point cstrncmp_returnLabel#1(lines 522 534) no Hoare annotation was computed. [2023-11-23 21:15:19,884 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 568) no Hoare annotation was computed. [2023-11-23 21:15:19,884 INFO L899 garLoopResultBuilder]: For program point L564-3(line 564) no Hoare annotation was computed. [2023-11-23 21:15:19,884 INFO L899 garLoopResultBuilder]: For program point L564-4(line 564) no Hoare annotation was computed. [2023-11-23 21:15:19,884 INFO L895 garLoopResultBuilder]: At program point L564-5(lines 564 567) the Hoare annotation is: (let ((.cse1 (<= 1 |ULTIMATE.start_main_~length1~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~length1~0#1| 2147483647))) (or (let ((.cse0 (+ |#StackHeapBarrier| 1))) (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= .cse0 |ULTIMATE.start_main_#t~malloc22#1.base|) (= |ULTIMATE.start_main_#t~malloc22#1.base| |ULTIMATE.start_main_~nondetString1~0#1.base|) .cse1 (= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc23#1.offset| 0) (exists ((|v_#valid_27| (Array Int Int))) (let ((.cse2 (store |v_#valid_27| |ULTIMATE.start_main_#t~malloc22#1.base| 1))) (and (= (select |v_#valid_27| 0) 0) (= (select .cse2 |ULTIMATE.start_main_#t~malloc23#1.base|) 0) (= (store .cse2 |ULTIMATE.start_main_#t~malloc23#1.base| 1) |#valid|) (= (select |v_#valid_27| |ULTIMATE.start_main_#t~malloc22#1.base|) 0)))) .cse3 (<= .cse0 |ULTIMATE.start_main_#t~malloc23#1.base|) (exists ((|v_#length_9| (Array Int Int))) (= |#length| (store (store |v_#length_9| |ULTIMATE.start_main_#t~malloc22#1.base| (mod |ULTIMATE.start_main_~length1~0#1| 4294967296)) |ULTIMATE.start_main_#t~malloc23#1.base| (mod |ULTIMATE.start_main_~length2~0#1| 4294967296)))) (exists ((|v_ULTIMATE.start_main_~length2~0#1_31| Int)) (and (<= |v_ULTIMATE.start_main_~length2~0#1_31| 2147483647) (or (and (= |ULTIMATE.start_main_~length2~0#1| |v_ULTIMATE.start_main_~length2~0#1_31|) (<= 1 |v_ULTIMATE.start_main_~length2~0#1_31|)) (and (= |ULTIMATE.start_main_~length2~0#1| 1) (<= |v_ULTIMATE.start_main_~length2~0#1_31| 0))) (<= 0 (+ |v_ULTIMATE.start_main_~length2~0#1_31| 2147483648)))) (= |ULTIMATE.start_main_#t~malloc22#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc23#1.base| |ULTIMATE.start_main_~nondetString2~0#1.base|))) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse1 (<= 1 |ULTIMATE.start_main_~length2~0#1|) .cse3 (<= |ULTIMATE.start_main_~length2~0#1| 2147483647)))) [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 574) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 564) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point L573(line 573) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point L573-1(line 573) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point L540(lines 540 549) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point L540-2(lines 540 549) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 529) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 564) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point L574(line 574) no Hoare annotation was computed. [2023-11-23 21:15:19,885 INFO L899 garLoopResultBuilder]: For program point L574-1(line 574) no Hoare annotation was computed. [2023-11-23 21:15:19,886 INFO L899 garLoopResultBuilder]: For program point L525(lines 525 526) no Hoare annotation was computed. [2023-11-23 21:15:19,886 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 529) no Hoare annotation was computed. [2023-11-23 21:15:19,886 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:15:19,886 INFO L899 garLoopResultBuilder]: For program point L542-1(lines 542 547) no Hoare annotation was computed. [2023-11-23 21:15:19,886 INFO L899 garLoopResultBuilder]: For program point L542-2(lines 542 547) no Hoare annotation was computed. [2023-11-23 21:15:19,886 INFO L902 garLoopResultBuilder]: At program point L542-4(lines 542 547) the Hoare annotation is: true [2023-11-23 21:15:19,886 INFO L899 garLoopResultBuilder]: For program point L542-5(lines 542 547) no Hoare annotation was computed. [2023-11-23 21:15:19,886 INFO L899 garLoopResultBuilder]: For program point L518-1(lines 518 519) no Hoare annotation was computed. [2023-11-23 21:15:19,886 INFO L902 garLoopResultBuilder]: At program point L518-4(lines 518 519) the Hoare annotation is: true [2023-11-23 21:15:19,886 INFO L899 garLoopResultBuilder]: For program point L518-5(lines 518 519) no Hoare annotation was computed. [2023-11-23 21:15:19,887 INFO L899 garLoopResultBuilder]: For program point L543(lines 543 546) no Hoare annotation was computed. [2023-11-23 21:15:19,887 INFO L902 garLoopResultBuilder]: At program point L543-2(lines 543 546) the Hoare annotation is: true [2023-11-23 21:15:19,887 INFO L899 garLoopResultBuilder]: For program point L568-3(line 568) no Hoare annotation was computed. [2023-11-23 21:15:19,887 INFO L899 garLoopResultBuilder]: For program point L568-4(line 568) no Hoare annotation was computed. [2023-11-23 21:15:19,887 INFO L895 garLoopResultBuilder]: At program point L568-5(lines 568 571) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~length1~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~length2~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~length1~0#1| 2147483647)) (.cse3 (<= |ULTIMATE.start_main_~length2~0#1| 2147483647))) (or (and (= |ULTIMATE.start_main_~i~1#1| 0) .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse3))) [2023-11-23 21:15:19,887 INFO L899 garLoopResultBuilder]: For program point L527-2(lines 527 532) no Hoare annotation was computed. [2023-11-23 21:15:19,887 INFO L902 garLoopResultBuilder]: At program point L527-4(lines 527 532) the Hoare annotation is: true [2023-11-23 21:15:19,887 INFO L899 garLoopResultBuilder]: For program point L527-5(lines 527 532) no Hoare annotation was computed. [2023-11-23 21:15:19,888 INFO L899 garLoopResultBuilder]: For program point L544(lines 544 545) no Hoare annotation was computed. [2023-11-23 21:15:19,888 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 573) no Hoare annotation was computed. [2023-11-23 21:15:19,889 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 529) no Hoare annotation was computed. [2023-11-23 21:15:19,889 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:15:19,889 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 573) no Hoare annotation was computed. [2023-11-23 21:15:19,889 INFO L899 garLoopResultBuilder]: For program point cstrstr_returnLabel#1(lines 535 551) no Hoare annotation was computed. [2023-11-23 21:15:19,889 INFO L899 garLoopResultBuilder]: For program point L529(line 529) no Hoare annotation was computed. [2023-11-23 21:15:19,889 INFO L899 garLoopResultBuilder]: For program point L529-1(line 529) no Hoare annotation was computed. [2023-11-23 21:15:19,890 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 568) no Hoare annotation was computed. [2023-11-23 21:15:19,890 INFO L899 garLoopResultBuilder]: For program point L530(lines 530 531) no Hoare annotation was computed. [2023-11-23 21:15:19,890 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 574) no Hoare annotation was computed. [2023-11-23 21:15:19,893 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:19,896 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:15:19,913 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc22!base could not be translated [2023-11-23 21:15:19,914 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc22!base could not be translated [2023-11-23 21:15:19,915 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc23!offset could not be translated [2023-11-23 21:15:19,915 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_#valid_27 : [int]int :: ((v_#valid_27[0] == 0 && v_#valid_27[#t~malloc22!base := 1][#t~malloc23!base] == 0) && v_#valid_27[#t~malloc22!base := 1][#t~malloc23!base := 1] == #valid) && v_#valid_27[#t~malloc22!base] == 0) could not be translated [2023-11-23 21:15:19,915 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc23!base could not be translated [2023-11-23 21:15:19,916 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_#length_9 : [int]int :: #length == v_#length_9[#t~malloc22!base := ~length1~0 % 4294967296][#t~malloc23!base := ~length2~0 % 4294967296]) could not be translated [2023-11-23 21:15:19,916 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_main_~length2~0#1_31 : int :: (v_ULTIMATE.start_main_~length2~0#1_31 <= 2147483647 && ((~length2~0 == v_ULTIMATE.start_main_~length2~0#1_31 && 1 <= v_ULTIMATE.start_main_~length2~0#1_31) || (~length2~0 == 1 && v_ULTIMATE.start_main_~length2~0#1_31 <= 0))) && 0 <= v_ULTIMATE.start_main_~length2~0#1_31 + 2147483648) could not be translated [2023-11-23 21:15:19,916 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc22!offset could not be translated [2023-11-23 21:15:19,916 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc23!base could not be translated [2023-11-23 21:15:19,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:15:19 BoogieIcfgContainer [2023-11-23 21:15:19,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:15:19,917 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:15:19,918 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:15:19,918 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:15:19,918 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:06" (3/4) ... [2023-11-23 21:15:19,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:15:19,935 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-23 21:15:19,936 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-23 21:15:19,937 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 21:15:19,937 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:15:20,050 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:15:20,051 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:15:20,052 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:15:20,053 INFO L158 Benchmark]: Toolchain (without parser) took 14909.57ms. Allocated memory was 115.3MB in the beginning and 251.7MB in the end (delta: 136.3MB). Free memory was 69.9MB in the beginning and 102.1MB in the end (delta: -32.2MB). Peak memory consumption was 105.8MB. Max. memory is 16.1GB. [2023-11-23 21:15:20,053 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory was 84.0MB in the beginning and 84.0MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:20,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.01ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 69.9MB in the beginning and 112.3MB in the end (delta: -42.4MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2023-11-23 21:15:20,054 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.10ms. Allocated memory is still 144.7MB. Free memory was 112.3MB in the beginning and 109.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:20,054 INFO L158 Benchmark]: Boogie Preprocessor took 64.26ms. Allocated memory is still 144.7MB. Free memory was 109.5MB in the beginning and 108.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:20,056 INFO L158 Benchmark]: RCFGBuilder took 649.72ms. Allocated memory is still 144.7MB. Free memory was 108.1MB in the beginning and 87.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:15:20,056 INFO L158 Benchmark]: TraceAbstraction took 13329.81ms. Allocated memory was 144.7MB in the beginning and 251.7MB in the end (delta: 107.0MB). Free memory was 86.5MB in the beginning and 108.4MB in the end (delta: -21.9MB). Peak memory consumption was 88.2MB. Max. memory is 16.1GB. [2023-11-23 21:15:20,057 INFO L158 Benchmark]: Witness Printer took 134.54ms. Allocated memory is still 251.7MB. Free memory was 108.4MB in the beginning and 102.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:15:20,063 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory was 84.0MB in the beginning and 84.0MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 626.01ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 69.9MB in the beginning and 112.3MB in the end (delta: -42.4MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.10ms. Allocated memory is still 144.7MB. Free memory was 112.3MB in the beginning and 109.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.26ms. Allocated memory is still 144.7MB. Free memory was 109.5MB in the beginning and 108.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 649.72ms. Allocated memory is still 144.7MB. Free memory was 108.1MB in the beginning and 87.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 13329.81ms. Allocated memory was 144.7MB in the beginning and 251.7MB in the end (delta: 107.0MB). Free memory was 86.5MB in the beginning and 108.4MB in the end (delta: -21.9MB). Peak memory consumption was 88.2MB. Max. memory is 16.1GB. * Witness Printer took 134.54ms. Allocated memory is still 251.7MB. Free memory was 108.4MB in the beginning and 102.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc22!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc22!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc23!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_#valid_27 : [int]int :: ((v_#valid_27[0] == 0 && v_#valid_27[#t~malloc22!base := 1][#t~malloc23!base] == 0) && v_#valid_27[#t~malloc22!base := 1][#t~malloc23!base := 1] == #valid) && v_#valid_27[#t~malloc22!base] == 0) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc23!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_#length_9 : [int]int :: #length == v_#length_9[#t~malloc22!base := ~length1~0 % 4294967296][#t~malloc23!base := ~length2~0 % 4294967296]) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_main_~length2~0#1_31 : int :: (v_ULTIMATE.start_main_~length2~0#1_31 <= 2147483647 && ((~length2~0 == v_ULTIMATE.start_main_~length2~0#1_31 && 1 <= v_ULTIMATE.start_main_~length2~0#1_31) || (~length2~0 == 1 && v_ULTIMATE.start_main_~length2~0#1_31 <= 0))) && 0 <= v_ULTIMATE.start_main_~length2~0#1_31 + 2147483648) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc22!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc23!base could not be translated * 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 - PositiveResult [Line: 564]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 564]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 568]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 568]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 573]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 573]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 574]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 574]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 529]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 529]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 13.2s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 164 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 164 mSDsluCounter, 468 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 398 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 164 mSDtfsCounter, 398 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 281 GetRequests, 137 SyntacticMatches, 9 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 163 HoareAnnotationTreeSize, 6 FomulaSimplifications, 261 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 155 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 200 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 235 ConstructedInterpolants, 0 QuantifiedInterpolants, 779 SizeOfPredicates, 16 NumberOfNonLiveVariables, 466 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 27 InterpolantComputations, 10 PerfectInterpolantSequences, 101/224 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: OVERALL_TIME: 0.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 3, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 2, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 2, TOOLS_QUANTIFIERELIM_TIME: 0.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 5, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 3, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 41, DAG_COMPRESSION_RETAINED_NODES: 18, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - InvariantResult [Line: 543]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 518]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 542]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 568]: Loop Invariant Derived loop invariant: ((((((i == 0) && (1 <= length1)) && (1 <= length2)) && (length1 <= 2147483647)) && (length2 <= 2147483647)) || (((((1 <= length1) && (1 <= length2)) && (length1 <= 2147483647)) && (1 <= i)) && (length2 <= 2147483647))) - InvariantResult [Line: 527]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 564]: Loop Invariant Derived loop invariant: ((((i == 0) && (1 <= length1)) && (length1 <= 2147483647)) || (((((1 <= i) && (1 <= length1)) && (1 <= length2)) && (length1 <= 2147483647)) && (length2 <= 2147483647))) RESULT: Ultimate proved your program to be correct! [2023-11-23 21:15:20,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab1156-8f32-45a7-a74b-93784114c70b/bin/utaipan-verify-mE87zJ7Ire/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: TRUE