./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX --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 e0283c4a072a13e5b82b0728b718582152e385c6ee1404b3ed9be4e37b84a0b2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:06,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:06,633 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:13:06,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:06,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:06,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:06,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:06,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:06,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:06,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:06,694 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:06,695 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:06,695 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:06,697 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:06,697 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:06,698 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:06,698 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:06,699 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:06,699 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:06,700 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:06,700 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:06,701 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:06,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:06,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:06,703 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:13:06,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:06,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:13:06,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:06,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:06,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:06,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:06,707 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:13:06,708 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:13:06,708 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:13:06,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:06,708 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:06,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:06,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:06,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:06,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:06,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:06,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:06,711 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:06,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:06,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:06,712 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:06,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:06,712 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_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0283c4a072a13e5b82b0728b718582152e385c6ee1404b3ed9be4e37b84a0b2 [2023-11-12 00:13:06,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:07,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:07,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:07,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:07,014 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:07,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2023-11-12 00:13:10,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:10,750 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:10,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2023-11-12 00:13:10,770 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/data/12dd88262/9d46f671602741ff83090ccd5aef7908/FLAG40cb6bbeb [2023-11-12 00:13:10,789 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/data/12dd88262/9d46f671602741ff83090ccd5aef7908 [2023-11-12 00:13:10,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:10,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:10,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:10,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:10,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:10,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:10,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f553c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10, skipping insertion in model container [2023-11-12 00:13:10,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:10,860 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:11,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:11,195 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:11,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:11,277 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:11,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11 WrapperNode [2023-11-12 00:13:11,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:11,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:11,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:11,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:11,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,373 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2023-11-12 00:13:11,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:11,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:11,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:11,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:11,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:11,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:11,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:11,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:11,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (1/1) ... [2023-11-12 00:13:11,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:11,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:11,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:11,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:13:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:13:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:13:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:13:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:11,670 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:11,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:11,937 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:12,029 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:12,038 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 00:13:12,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:12 BoogieIcfgContainer [2023-11-12 00:13:12,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:12,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:12,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:12,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:12,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:10" (1/3) ... [2023-11-12 00:13:12,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7173b605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:12, skipping insertion in model container [2023-11-12 00:13:12,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:11" (2/3) ... [2023-11-12 00:13:12,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7173b605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:12, skipping insertion in model container [2023-11-12 00:13:12,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:12" (3/3) ... [2023-11-12 00:13:12,054 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncmp-alloca-2.i [2023-11-12 00:13:12,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:12,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-12 00:13:12,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:12,132 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;@36c505cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:12,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-12 00:13:12,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 40 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) [2023-11-12 00:13:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:13:12,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:12,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:13:12,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:12,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash 4607, now seen corresponding path program 1 times [2023-11-12 00:13:12,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:12,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498564887] [2023-11-12 00:13:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:12,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:12,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498564887] [2023-11-12 00:13:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498564887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:12,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:12,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144184035] [2023-11-12 00:13:12,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:12,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:12,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:12,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:12,734 INFO L87 Difference]: Start difference. First operand has 41 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 40 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-12 00:13:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:12,820 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2023-11-12 00:13:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:12,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-12 00:13:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:12,834 INFO L225 Difference]: With dead ends: 69 [2023-11-12 00:13:12,836 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 00:13:12,840 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 [2023-11-12 00:13:12,849 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:12,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 30 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 00:13:12,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-12 00:13:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 26 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) [2023-11-12 00:13:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-11-12 00:13:12,897 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 2 [2023-11-12 00:13:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:12,898 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-11-12 00:13:12,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-12 00:13:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-11-12 00:13:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:13:12,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:12,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:13:12,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:13:12,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:12,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash 142869, now seen corresponding path program 1 times [2023-11-12 00:13:12,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:12,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166422359] [2023-11-12 00:13:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:12,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:13,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166422359] [2023-11-12 00:13:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166422359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:13,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:13,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:13,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536957227] [2023-11-12 00:13:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:13,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:13,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:13,066 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-12 00:13:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:13,090 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-11-12 00:13:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:13,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-11-12 00:13:13,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:13,092 INFO L225 Difference]: With dead ends: 27 [2023-11-12 00:13:13,092 INFO L226 Difference]: Without dead ends: 25 [2023-11-12 00:13:13,093 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 [2023-11-12 00:13:13,095 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:13,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 18 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-12 00:13:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-12 00:13:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 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) [2023-11-12 00:13:13,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-11-12 00:13:13,102 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 3 [2023-11-12 00:13:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:13,103 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-11-12 00:13:13,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-12 00:13:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-11-12 00:13:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:13:13,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:13,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:13:13,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:13:13,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:13,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash 137301448, now seen corresponding path program 1 times [2023-11-12 00:13:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:13,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867777086] [2023-11-12 00:13:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:13,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:13,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867777086] [2023-11-12 00:13:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867777086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:13,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:13,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167088593] [2023-11-12 00:13:13,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:13,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:13,216 INFO L87 Difference]: Start difference. First operand 25 states and 26 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) [2023-11-12 00:13:13,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:13,267 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-11-12 00:13:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:13,268 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 [2023-11-12 00:13:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:13,269 INFO L225 Difference]: With dead ends: 33 [2023-11-12 00:13:13,269 INFO L226 Difference]: Without dead ends: 31 [2023-11-12 00:13:13,270 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 [2023-11-12 00:13:13,272 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:13,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-12 00:13:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-11-12 00:13:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 29 states have internal predecessors, (32), 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) [2023-11-12 00:13:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-11-12 00:13:13,281 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 5 [2023-11-12 00:13:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:13,281 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-11-12 00:13:13,282 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) [2023-11-12 00:13:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-11-12 00:13:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:13:13,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:13,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:13:13,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:13:13,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:13,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:13,285 INFO L85 PathProgramCache]: Analyzing trace with hash -38701913, now seen corresponding path program 1 times [2023-11-12 00:13:13,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440454913] [2023-11-12 00:13:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:13,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:13,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440454913] [2023-11-12 00:13:13,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440454913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:13,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:13,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580666174] [2023-11-12 00:13:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:13,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:13,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:13,425 INFO L87 Difference]: Start difference. First operand 30 states and 32 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) [2023-11-12 00:13:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:13,450 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-11-12 00:13:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:13,451 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 [2023-11-12 00:13:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:13,452 INFO L225 Difference]: With dead ends: 30 [2023-11-12 00:13:13,452 INFO L226 Difference]: Without dead ends: 28 [2023-11-12 00:13:13,452 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 [2023-11-12 00:13:13,454 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:13,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 15 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-12 00:13:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-12 00:13:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 27 states have internal predecessors, (30), 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) [2023-11-12 00:13:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-12 00:13:13,463 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 6 [2023-11-12 00:13:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:13,463 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-12 00:13:13,463 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) [2023-11-12 00:13:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-12 00:13:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:13:13,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:13,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:13,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:13:13,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:13,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1199759229, now seen corresponding path program 1 times [2023-11-12 00:13:13,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977686290] [2023-11-12 00:13:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:13,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:13,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:13,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977686290] [2023-11-12 00:13:13,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977686290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:13,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:13,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961222914] [2023-11-12 00:13:13,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:13,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:13,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:13,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:13,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:13,542 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-11-12 00:13:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:13,563 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-11-12 00:13:13,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:13,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2023-11-12 00:13:13,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:13,564 INFO L225 Difference]: With dead ends: 28 [2023-11-12 00:13:13,565 INFO L226 Difference]: Without dead ends: 21 [2023-11-12 00:13:13,565 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 [2023-11-12 00:13:13,567 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:13,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 15 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-12 00:13:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-12 00:13:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) [2023-11-12 00:13:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-11-12 00:13:13,573 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2023-11-12 00:13:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:13,574 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-11-12 00:13:13,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-11-12 00:13:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-12 00:13:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:13:13,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:13,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:13,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:13:13,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:13,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1917379318, now seen corresponding path program 1 times [2023-11-12 00:13:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:13,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430989839] [2023-11-12 00:13:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:13,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:13,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430989839] [2023-11-12 00:13:13,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430989839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:13,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:13,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:13,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058452288] [2023-11-12 00:13:13,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:13,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:13,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:13,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:13,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:13,647 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-12 00:13:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:13,685 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-11-12 00:13:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:13,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-12 00:13:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:13,686 INFO L225 Difference]: With dead ends: 28 [2023-11-12 00:13:13,687 INFO L226 Difference]: Without dead ends: 26 [2023-11-12 00:13:13,687 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 [2023-11-12 00:13:13,688 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:13,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-12 00:13:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-12 00:13:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 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) [2023-11-12 00:13:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-11-12 00:13:13,696 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 9 [2023-11-12 00:13:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:13,696 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-12 00:13:13,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-12 00:13:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-11-12 00:13:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:13:13,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:13,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-11-12 00:13:13,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:13:13,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:13,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1158260396, now seen corresponding path program 1 times [2023-11-12 00:13:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711156169] [2023-11-12 00:13:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:13,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711156169] [2023-11-12 00:13:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711156169] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796961886] [2023-11-12 00:13:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:13,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:13,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:13,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:13,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:13:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:13,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:13:13,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:13,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:13,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796961886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:13,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:13,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-12 00:13:13,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441373263] [2023-11-12 00:13:13,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:13,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:13:13,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:13,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:13:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:13:13,983 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-11-12 00:13:14,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:14,042 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-11-12 00:13:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:13:14,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2023-11-12 00:13:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:14,065 INFO L225 Difference]: With dead ends: 27 [2023-11-12 00:13:14,065 INFO L226 Difference]: Without dead ends: 26 [2023-11-12 00:13:14,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:13:14,067 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:14,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 44 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-12 00:13:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-11-12 00:13:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 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) [2023-11-12 00:13:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-12 00:13:14,088 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 10 [2023-11-12 00:13:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:14,088 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-12 00:13:14,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-11-12 00:13:14,089 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-11-12 00:13:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:13:14,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:14,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2023-11-12 00:13:14,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:14,290 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:14,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1546333971, now seen corresponding path program 1 times [2023-11-12 00:13:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:14,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904850441] [2023-11-12 00:13:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:14,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:14,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:14,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904850441] [2023-11-12 00:13:14,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904850441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772087027] [2023-11-12 00:13:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:14,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:14,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:14,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:14,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:13:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:14,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:13:14,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:14,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:14,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772087027] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:14,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [529676184] [2023-11-12 00:13:14,650 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-12 00:13:14,650 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:13:14,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:13:14,661 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:13:14,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:13:16,305 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:13:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [529676184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:13:16,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2023-11-12 00:13:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434330875] [2023-11-12 00:13:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:16,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:13:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:13:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:13:16,664 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2023-11-12 00:13:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:16,717 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-11-12 00:13:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:16,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 11 [2023-11-12 00:13:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:16,720 INFO L225 Difference]: With dead ends: 25 [2023-11-12 00:13:16,720 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:13:16,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:13:16,722 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:16,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 31 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:13:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2023-11-12 00:13:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 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) [2023-11-12 00:13:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-11-12 00:13:16,726 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2023-11-12 00:13:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:16,727 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-11-12 00:13:16,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2023-11-12 00:13:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-11-12 00:13:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:13:16,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:16,734 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:16,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:16,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:16,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:16,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:16,942 INFO L85 PathProgramCache]: Analyzing trace with hash -15521580, now seen corresponding path program 1 times [2023-11-12 00:13:16,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:16,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980719161] [2023-11-12 00:13:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:16,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:17,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:17,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980719161] [2023-11-12 00:13:17,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980719161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401002841] [2023-11-12 00:13:17,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:17,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:17,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:17,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:17,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:13:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:17,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:13:17,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:17,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401002841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:17,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:17,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-12 00:13:17,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026391001] [2023-11-12 00:13:17,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:17,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:13:17,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:13:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:13:17,189 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-12 00:13:17,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:17,234 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-12 00:13:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:13:17,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2023-11-12 00:13:17,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:17,238 INFO L225 Difference]: With dead ends: 19 [2023-11-12 00:13:17,238 INFO L226 Difference]: Without dead ends: 18 [2023-11-12 00:13:17,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:13:17,243 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 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 [2023-11-12 00:13:17,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-12 00:13:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-12 00:13:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-11-12 00:13:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-12 00:13:17,252 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2023-11-12 00:13:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:17,252 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-12 00:13:17,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-12 00:13:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-12 00:13:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:13:17,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:17,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:17,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:17,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-12 00:13:17,466 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:17,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash -481168895, now seen corresponding path program 1 times [2023-11-12 00:13:17,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:17,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016362566] [2023-11-12 00:13:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:17,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:17,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016362566] [2023-11-12 00:13:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016362566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966519315] [2023-11-12 00:13:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:17,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:17,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:17,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:17,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:13:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:17,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:13:17,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:17,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:17,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966519315] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [317928400] [2023-11-12 00:13:17,742 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-12 00:13:17,742 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:13:17,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:13:17,743 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:13:17,743 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:13:19,051 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:13:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [317928400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:19,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:13:19,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5] total 17 [2023-11-12 00:13:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138722421] [2023-11-12 00:13:19,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:13:19,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:13:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:13:19,968 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-11-12 00:13:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:20,237 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2023-11-12 00:13:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:13:20,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 15 [2023-11-12 00:13:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:20,239 INFO L225 Difference]: With dead ends: 35 [2023-11-12 00:13:20,239 INFO L226 Difference]: Without dead ends: 23 [2023-11-12 00:13:20,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:13:20,240 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:20,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:13:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-12 00:13:20,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-11-12 00:13:20,246 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) [2023-11-12 00:13:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-11-12 00:13:20,257 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2023-11-12 00:13:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:20,258 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-11-12 00:13:20,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-11-12 00:13:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-11-12 00:13:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:13:20,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:20,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:20,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:20,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 00:13:20,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:20,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1115832859, now seen corresponding path program 1 times [2023-11-12 00:13:20,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:20,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624733679] [2023-11-12 00:13:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:13:20,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:20,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624733679] [2023-11-12 00:13:20,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624733679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:20,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958276520] [2023-11-12 00:13:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:20,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:20,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:20,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:20,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:13:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:20,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:13:20,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:13:20,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:13:20,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958276520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864187291] [2023-11-12 00:13:20,771 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:13:20,772 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:13:20,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:13:20,772 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:13:20,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:13:22,477 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:13:23,729 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1091#(and (<= 2147483647 |ULTIMATE.start_main_#t~post17#1|) (= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_main_~length1~0#1| 2147483648) (<= 2 |ULTIMATE.start_main_~length2~0#1|) (= |ULTIMATE.start_main_#t~malloc14#1.offset| 0) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~length1~0#1|)) (<= |ULTIMATE.start_main_~length2~0#1| 2147483648))' at error location [2023-11-12 00:13:23,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:13:23,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:13:23,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-12 00:13:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845875392] [2023-11-12 00:13:23,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:13:23,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:13:23,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:13:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:13:23,731 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 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) [2023-11-12 00:13:23,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:23,863 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2023-11-12 00:13:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:13:23,864 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 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 [2023-11-12 00:13:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:23,864 INFO L225 Difference]: With dead ends: 37 [2023-11-12 00:13:23,864 INFO L226 Difference]: Without dead ends: 36 [2023-11-12 00:13:23,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2023-11-12 00:13:23,866 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:23,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 62 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:23,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-12 00:13:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-12 00:13:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 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) [2023-11-12 00:13:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2023-11-12 00:13:23,873 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 20 [2023-11-12 00:13:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:23,873 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2023-11-12 00:13:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 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) [2023-11-12 00:13:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2023-11-12 00:13:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-12 00:13:23,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:23,875 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:23,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:24,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 00:13:24,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:13:24,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2056107943, now seen corresponding path program 2 times [2023-11-12 00:13:24,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:24,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486214662] [2023-11-12 00:13:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:24,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:13:24,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486214662] [2023-11-12 00:13:24,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486214662] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:24,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559491022] [2023-11-12 00:13:24,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:13:24,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:24,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:24,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:24,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:13:24,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:13:24,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:13:24,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:13:24,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-12 00:13:24,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:24,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559491022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:24,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:24,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2023-11-12 00:13:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214743628] [2023-11-12 00:13:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:24,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:24,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:13:24,418 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-12 00:13:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:24,446 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2023-11-12 00:13:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:24,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 35 [2023-11-12 00:13:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:24,447 INFO L225 Difference]: With dead ends: 36 [2023-11-12 00:13:24,447 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:13:24,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:13:24,449 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:24,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:24,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:13:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:13:24,450 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) [2023-11-12 00:13:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:13:24,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2023-11-12 00:13:24,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:24,455 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:13:24,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-12 00:13:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:13:24,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:13:24,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-11-12 00:13:24,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-11-12 00:13:24,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-11-12 00:13:24,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-11-12 00:13:24,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-11-12 00:13:24,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-11-12 00:13:24,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-11-12 00:13:24,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-11-12 00:13:24,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-11-12 00:13:24,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-11-12 00:13:24,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-11-12 00:13:24,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-11-12 00:13:24,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-11-12 00:13:24,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-11-12 00:13:24,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:24,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 00:13:24,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:13:25,000 INFO L899 garLoopResultBuilder]: For program point cstrncmp_returnLabel#1(lines 513 525) no Hoare annotation was computed. [2023-11-12 00:13:25,000 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 538) no Hoare annotation was computed. [2023-11-12 00:13:25,000 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 543) no Hoare annotation was computed. [2023-11-12 00:13:25,000 INFO L899 garLoopResultBuilder]: For program point L548(line 548) no Hoare annotation was computed. [2023-11-12 00:13:25,000 INFO L899 garLoopResultBuilder]: For program point L548-1(line 548) no Hoare annotation was computed. [2023-11-12 00:13:25,000 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 538) no Hoare annotation was computed. [2023-11-12 00:13:25,000 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 548) no Hoare annotation was computed. [2023-11-12 00:13:25,000 INFO L899 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2023-11-12 00:13:25,001 INFO L899 garLoopResultBuilder]: For program point L549-1(line 549) no Hoare annotation was computed. [2023-11-12 00:13:25,001 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 517) no Hoare annotation was computed. [2023-11-12 00:13:25,001 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 538) no Hoare annotation was computed. [2023-11-12 00:13:25,001 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 548) no Hoare annotation was computed. [2023-11-12 00:13:25,001 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:13:25,001 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 549) no Hoare annotation was computed. [2023-11-12 00:13:25,001 INFO L899 garLoopResultBuilder]: For program point L518-2(lines 518 523) no Hoare annotation was computed. [2023-11-12 00:13:25,001 INFO L895 garLoopResultBuilder]: At program point L518-4(lines 518 523) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~length1~0#1|) [2023-11-12 00:13:25,002 INFO L899 garLoopResultBuilder]: For program point L518-5(lines 518 523) no Hoare annotation was computed. [2023-11-12 00:13:25,002 INFO L899 garLoopResultBuilder]: For program point L543-1(line 543) no Hoare annotation was computed. [2023-11-12 00:13:25,002 INFO L899 garLoopResultBuilder]: For program point L543-2(lines 543 546) no Hoare annotation was computed. [2023-11-12 00:13:25,002 INFO L899 garLoopResultBuilder]: For program point L543-5(line 543) no Hoare annotation was computed. [2023-11-12 00:13:25,002 INFO L899 garLoopResultBuilder]: For program point L543-6(line 543) no Hoare annotation was computed. [2023-11-12 00:13:25,002 INFO L895 garLoopResultBuilder]: At program point L543-7(lines 543 546) 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))) [2023-11-12 00:13:25,002 INFO L899 garLoopResultBuilder]: For program point L543-8(lines 543 546) no Hoare annotation was computed. [2023-11-12 00:13:25,002 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 549) no Hoare annotation was computed. [2023-11-12 00:13:25,002 INFO L899 garLoopResultBuilder]: For program point L519(lines 519 520) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 543) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW(line 520) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point L520(line 520) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point L520-1(line 520) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 543) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW(line 520) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point L521(lines 521 522) no Hoare annotation was computed. [2023-11-12 00:13:25,003 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 538) no Hoare annotation was computed. [2023-11-12 00:13:25,004 INFO L899 garLoopResultBuilder]: For program point L538-1(line 538) no Hoare annotation was computed. [2023-11-12 00:13:25,004 INFO L899 garLoopResultBuilder]: For program point L538-2(lines 538 541) no Hoare annotation was computed. [2023-11-12 00:13:25,004 INFO L899 garLoopResultBuilder]: For program point L538-5(line 538) no Hoare annotation was computed. [2023-11-12 00:13:25,004 INFO L899 garLoopResultBuilder]: For program point L538-6(line 538) no Hoare annotation was computed. [2023-11-12 00:13:25,004 INFO L895 garLoopResultBuilder]: At program point L538-7(lines 538 541) the Hoare annotation is: (let ((.cse0 (<= 2 |ULTIMATE.start_main_~nondetString2~0#1.base|)) (.cse1 (<= 1 |#StackHeapBarrier|)) (.cse2 (= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0)) (.cse3 (<= 1 |ULTIMATE.start_main_~length1~0#1|)) (.cse4 (= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~length2~0#1|)) (.cse6 (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0)) (.cse7 (<= |ULTIMATE.start_main_~length1~0#1| 2147483647)) (.cse8 (<= 2 |ULTIMATE.start_main_#t~malloc14#1.base|)) (.cse9 (<= 2 |ULTIMATE.start_main_#t~malloc13#1.base|)) (.cse10 (<= 2 |ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse11 (= |ULTIMATE.start_main_#t~malloc14#1.offset| 0)) (.cse12 (<= |ULTIMATE.start_main_~length2~0#1| 2147483647))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~i~0#1| 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) [2023-11-12 00:13:25,004 INFO L899 garLoopResultBuilder]: For program point L538-8(lines 538 541) no Hoare annotation was computed. [2023-11-12 00:13:25,004 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 543) no Hoare annotation was computed. [2023-11-12 00:13:25,011 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:25,014 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:13:25,030 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~length1~0 [2023-11-12 00:13:25,031 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~length1~0 [2023-11-12 00:13:25,031 ERROR L464 ceAbstractionStarter]: Failed to backtranslate (<= 1 |ULTIMATE.start_main_~length1~0#1|) [2023-11-12 00:13:25,040 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated [2023-11-12 00:13:25,041 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated [2023-11-12 00:13:25,041 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated [2023-11-12 00:13:25,041 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated [2023-11-12 00:13:25,042 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated [2023-11-12 00:13:25,042 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated [2023-11-12 00:13:25,042 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated [2023-11-12 00:13:25,043 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated [2023-11-12 00:13:25,049 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated [2023-11-12 00:13:25,050 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated [2023-11-12 00:13:25,050 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated [2023-11-12 00:13:25,050 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated [2023-11-12 00:13:25,057 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated [2023-11-12 00:13:25,057 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated [2023-11-12 00:13:25,057 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated [2023-11-12 00:13:25,057 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated [2023-11-12 00:13:25,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:13:25 BoogieIcfgContainer [2023-11-12 00:13:25,059 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:13:25,060 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:13:25,060 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:13:25,060 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:13:25,061 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:12" (3/4) ... [2023-11-12 00:13:25,063 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:13:25,076 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-12 00:13:25,077 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-12 00:13:25,077 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-12 00:13:25,078 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:13:25,208 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:13:25,208 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:13:25,209 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:13:25,209 INFO L158 Benchmark]: Toolchain (without parser) took 14410.64ms. Allocated memory was 155.2MB in the beginning and 295.7MB in the end (delta: 140.5MB). Free memory was 108.4MB in the beginning and 148.9MB in the end (delta: -40.5MB). Peak memory consumption was 102.5MB. Max. memory is 16.1GB. [2023-11-12 00:13:25,210 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 155.2MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:25,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.97ms. Allocated memory is still 155.2MB. Free memory was 107.8MB in the beginning and 91.8MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:13:25,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.84ms. Allocated memory is still 155.2MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:25,211 INFO L158 Benchmark]: Boogie Preprocessor took 36.43ms. Allocated memory is still 155.2MB. Free memory was 89.7MB in the beginning and 88.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:25,211 INFO L158 Benchmark]: RCFGBuilder took 631.70ms. Allocated memory is still 155.2MB. Free memory was 88.2MB in the beginning and 70.1MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:13:25,212 INFO L158 Benchmark]: TraceAbstraction took 13012.62ms. Allocated memory was 155.2MB in the beginning and 295.7MB in the end (delta: 140.5MB). Free memory was 69.4MB in the beginning and 154.2MB in the end (delta: -84.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2023-11-12 00:13:25,212 INFO L158 Benchmark]: Witness Printer took 149.18ms. Allocated memory is still 295.7MB. Free memory was 154.2MB in the beginning and 148.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:13:25,214 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 155.2MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.97ms. Allocated memory is still 155.2MB. Free memory was 107.8MB in the beginning and 91.8MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.84ms. Allocated memory is still 155.2MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.43ms. Allocated memory is still 155.2MB. Free memory was 89.7MB in the beginning and 88.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 631.70ms. Allocated memory is still 155.2MB. Free memory was 88.2MB in the beginning and 70.1MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13012.62ms. Allocated memory was 155.2MB in the beginning and 295.7MB in the end (delta: 140.5MB). Free memory was 69.4MB in the beginning and 154.2MB in the end (delta: -84.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Witness Printer took 149.18ms. Allocated memory is still 295.7MB. Free memory was 154.2MB in the beginning and 148.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~length1~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~length1~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset 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: 538]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 538]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 538]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 538]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 543]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 543]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 543]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 543]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 548]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 548]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 549]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 549]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 520]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 520]: 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, 41 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 12.9s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 373 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 215 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 271 IncrementalHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 158 mSDtfsCounter, 271 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 140 SyntacticMatches, 11 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 56, 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, 12 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 297 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 242 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 267 ConstructedInterpolants, 0 QuantifiedInterpolants, 619 SizeOfPredicates, 12 NumberOfNonLiveVariables, 444 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 73/176 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: 3.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME: 2.6s, 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: 47, TOOLS_QUANTIFIERELIM_TIME: 2.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 81, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 2.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, 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: 141, DAG_COMPRESSION_RETAINED_NODES: 57, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold - InvariantResult [Line: 518]: Loop Invariant [2023-11-12 00:13:25,231 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~length1~0 [2023-11-12 00:13:25,231 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~length1~0 Derived loop invariant: NULL - InvariantResult [Line: 543]: 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: 538]: Loop Invariant [2023-11-12 00:13:25,233 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated [2023-11-12 00:13:25,233 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated [2023-11-12 00:13:25,234 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated [2023-11-12 00:13:25,234 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated [2023-11-12 00:13:25,234 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated [2023-11-12 00:13:25,234 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated [2023-11-12 00:13:25,234 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated [2023-11-12 00:13:25,235 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated [2023-11-12 00:13:25,248 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated [2023-11-12 00:13:25,248 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated [2023-11-12 00:13:25,248 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated [2023-11-12 00:13:25,249 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated [2023-11-12 00:13:25,249 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!offset could not be translated [2023-11-12 00:13:25,250 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!base could not be translated [2023-11-12 00:13:25,250 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc13!base could not be translated [2023-11-12 00:13:25,250 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~malloc14!offset could not be translated Derived loop invariant: ((((((i == 0) && (1 <= length1)) && (1 <= length2)) && (length1 <= 2147483647)) && (length2 <= 2147483647)) || (((((1 <= i) && (1 <= length1)) && (1 <= length2)) && (length1 <= 2147483647)) && (length2 <= 2147483647))) RESULT: Ultimate proved your program to be correct! [2023-11-12 00:13:25,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a0e40-3cdf-443d-8ceb-fa02f2a1c5f2/bin/utaipan-verify-NcY6lQBIFX/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