./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:43,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:43,610 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:51:43,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:43,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:43,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:43,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:43,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:43,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:43,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:43,649 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:43,649 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:43,650 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:43,650 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:51:43,651 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:43,651 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:43,652 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:51:43,653 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:51:43,653 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:43,654 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:51:43,654 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:51:43,655 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:51:43,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:43,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:51:43,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:51:43,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:43,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:51:43,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:43,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:51:43,660 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:51:43,660 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:51:43,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:51:43,661 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:43,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:43,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:43,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:43,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:43,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:43,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:43,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:51:43,665 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:51:43,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:51:43,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:43,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:51:43,667 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:43,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:43,667 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_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f [2023-11-24 23:51:43,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:43,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:43,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:43,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:43,944 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:43,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2023-11-24 23:51:47,163 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:51:47,392 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:51:47,392 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2023-11-24 23:51:47,398 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/data/d71f61874/91abaf60d295404698aff6555e6109e1/FLAG53b9518aa [2023-11-24 23:51:47,418 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/data/d71f61874/91abaf60d295404698aff6555e6109e1 [2023-11-24 23:51:47,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:51:47,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:51:47,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:47,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:51:47,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:51:47,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c2948c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47, skipping insertion in model container [2023-11-24 23:51:47,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:47,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:47,673 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:51:47,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:47,707 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:51:47,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47 WrapperNode [2023-11-24 23:51:47,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:47,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:47,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:51:47,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:51:47,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,742 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2023-11-24 23:51:47,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:47,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:51:47,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:51:47,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:51:47,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:51:47,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:51:47,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:51:47,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:51:47,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:47,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:47,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:51:47,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:51:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:51:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:51:47,941 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:51:47,944 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:51:48,116 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:51:48,146 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:51:48,147 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:51:48,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:48 BoogieIcfgContainer [2023-11-24 23:51:48,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:51:48,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:51:48,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:51:48,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:51:48,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:51:47" (1/3) ... [2023-11-24 23:51:48,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc77bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:48, skipping insertion in model container [2023-11-24 23:51:48,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (2/3) ... [2023-11-24 23:51:48,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc77bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:48, skipping insertion in model container [2023-11-24 23:51:48,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:48" (3/3) ... [2023-11-24 23:51:48,159 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2023-11-24 23:51:48,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:51:48,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 23:51:48,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:51:48,255 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;@21e74a40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:51:48,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 23:51:48,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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) [2023-11-24 23:51:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:51:48,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:51:48,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:48,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2023-11-24 23:51:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:48,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600672196] [2023-11-24 23:51:48,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:48,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600672196] [2023-11-24 23:51:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600672196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:48,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:48,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:51:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537733181] [2023-11-24 23:51:48,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:48,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:48,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,531 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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) Second operand has 3 states, 2 states have (on average 2.5) 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) [2023-11-24 23:51:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:48,613 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-11-24 23:51:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:48,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2023-11-24 23:51:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:48,624 INFO L225 Difference]: With dead ends: 31 [2023-11-24 23:51:48,625 INFO L226 Difference]: Without dead ends: 26 [2023-11-24 23:51:48,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,633 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:48,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-24 23:51:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-11-24 23:51:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 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) [2023-11-24 23:51:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-11-24 23:51:48,669 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2023-11-24 23:51:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:48,670 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-11-24 23:51:48,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2023-11-24 23:51:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-24 23:51:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:51:48,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:51:48,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:51:48,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:48,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2023-11-24 23:51:48,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:48,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973497352] [2023-11-24 23:51:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:48,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:48,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973497352] [2023-11-24 23:51:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973497352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:48,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:48,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:51:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026276096] [2023-11-24 23:51:48,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:48,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:48,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:48,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:48,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,719 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2023-11-24 23:51:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:48,750 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-24 23:51:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:48,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2023-11-24 23:51:48,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:48,752 INFO L225 Difference]: With dead ends: 40 [2023-11-24 23:51:48,752 INFO L226 Difference]: Without dead ends: 38 [2023-11-24 23:51:48,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,754 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:48,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:51:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-24 23:51:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-11-24 23:51:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-11-24 23:51:48,763 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2023-11-24 23:51:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:48,763 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-11-24 23:51:48,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2023-11-24 23:51:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-11-24 23:51:48,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:51:48,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:48,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:51:48,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:48,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2023-11-24 23:51:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:48,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482399351] [2023-11-24 23:51:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:48,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:48,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482399351] [2023-11-24 23:51:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482399351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:48,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:48,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:51:48,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563447670] [2023-11-24 23:51:48,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:48,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:48,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,844 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-24 23:51:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:48,858 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-11-24 23:51:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:48,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 [2023-11-24 23:51:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:48,860 INFO L225 Difference]: With dead ends: 36 [2023-11-24 23:51:48,860 INFO L226 Difference]: Without dead ends: 35 [2023-11-24 23:51:48,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,863 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:48,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:51:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-24 23:51:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-24 23:51:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 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) [2023-11-24 23:51:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-11-24 23:51:48,872 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 7 [2023-11-24 23:51:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:48,873 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-11-24 23:51:48,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-24 23:51:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-11-24 23:51:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:51:48,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:48,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:51:48,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:48,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2023-11-24 23:51:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:48,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938648239] [2023-11-24 23:51:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:48,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:48,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938648239] [2023-11-24 23:51:48,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938648239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:48,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:48,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:51:48,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498403163] [2023-11-24 23:51:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,955 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:48,983 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-11-24 23:51:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:48,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-24 23:51:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:48,985 INFO L225 Difference]: With dead ends: 41 [2023-11-24 23:51:48,985 INFO L226 Difference]: Without dead ends: 40 [2023-11-24 23:51:48,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,988 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:48,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:51:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-24 23:51:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-24 23:51:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.4) internal successors, (49), 39 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) [2023-11-24 23:51:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-11-24 23:51:48,997 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2023-11-24 23:51:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:48,998 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-11-24 23:51:48,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-11-24 23:51:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:51:48,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,999 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:48,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:51:49,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:49,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash 799855624, now seen corresponding path program 1 times [2023-11-24 23:51:49,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:49,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582599414] [2023-11-24 23:51:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:49,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:49,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:49,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582599414] [2023-11-24 23:51:49,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582599414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:49,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174066549] [2023-11-24 23:51:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:49,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:49,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:49,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:49,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:51:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:49,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:51:49,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:49,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:49,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174066549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:49,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [670890920] [2023-11-24 23:51:49,289 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:51:49,294 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:49,298 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:49,304 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:49,304 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:49,725 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:51:50,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [670890920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:50,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:51:50,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2023-11-24 23:51:50,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560018439] [2023-11-24 23:51:50,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:50,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:51:50,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:50,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:51:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:51:50,101 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2023-11-24 23:51:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:50,655 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2023-11-24 23:51:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 23:51:50,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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 11 [2023-11-24 23:51:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:50,657 INFO L225 Difference]: With dead ends: 66 [2023-11-24 23:51:50,657 INFO L226 Difference]: Without dead ends: 62 [2023-11-24 23:51:50,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:50,659 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:50,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 12 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:51:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-24 23:51:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2023-11-24 23:51:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 46 states have internal predecessors, (57), 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) [2023-11-24 23:51:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2023-11-24 23:51:50,671 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 11 [2023-11-24 23:51:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:50,671 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2023-11-24 23:51:50,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2023-11-24 23:51:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2023-11-24 23:51:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:51:50,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:50,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:50,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:50,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:50,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:50,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 799855816, now seen corresponding path program 1 times [2023-11-24 23:51:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099768216] [2023-11-24 23:51:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:50,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099768216] [2023-11-24 23:51:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099768216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524598180] [2023-11-24 23:51:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:50,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:50,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:50,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:50,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:51:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:51,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:51:51,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:51,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524598180] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1227735165] [2023-11-24 23:51:51,114 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:51:51,114 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:51,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:51,116 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:51,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:51,313 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:51:51,531 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '618#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-24 23:51:51,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:51:51,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:51:51,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-24 23:51:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538790506] [2023-11-24 23:51:51,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:51:51,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:51:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:51:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:51:51,538 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-11-24 23:51:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:51,618 INFO L93 Difference]: Finished difference Result 122 states and 162 transitions. [2023-11-24 23:51:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:51:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 [2023-11-24 23:51:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:51,626 INFO L225 Difference]: With dead ends: 122 [2023-11-24 23:51:51,626 INFO L226 Difference]: Without dead ends: 120 [2023-11-24 23:51:51,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:51:51,633 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:51,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 33 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-24 23:51:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2023-11-24 23:51:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 100 states have internal predecessors, (131), 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) [2023-11-24 23:51:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2023-11-24 23:51:51,670 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 11 [2023-11-24 23:51:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:51,670 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2023-11-24 23:51:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-11-24 23:51:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2023-11-24 23:51:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:51:51,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:51,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:51,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:51,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:51,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:51,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1616469403, now seen corresponding path program 1 times [2023-11-24 23:51:51,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:51,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856863714] [2023-11-24 23:51:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:51,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:51,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856863714] [2023-11-24 23:51:51,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856863714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:51,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091658536] [2023-11-24 23:51:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:51,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:51,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:51,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:51,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:51:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:52,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:51:52,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:52,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091658536] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [76926182] [2023-11-24 23:51:52,059 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:51:52,060 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:52,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:52,060 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:52,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:52,464 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:51:52,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '947#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_#t~nondet1#1_33| Int)) (and (not (= |v_ULTIMATE.start_main_#t~nondet1#1_33| 0)) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet1#1_33| 2147483648)) (<= |v_ULTIMATE.start_main_#t~nondet1#1_33| 2147483647))) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-24 23:51:52,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:51:52,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:51:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-24 23:51:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388413611] [2023-11-24 23:51:52,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:51:52,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:51:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:51:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:51:52,979 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2023-11-24 23:51:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:53,051 INFO L93 Difference]: Finished difference Result 223 states and 310 transitions. [2023-11-24 23:51:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:51:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) Word has length 12 [2023-11-24 23:51:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:53,053 INFO L225 Difference]: With dead ends: 223 [2023-11-24 23:51:53,053 INFO L226 Difference]: Without dead ends: 221 [2023-11-24 23:51:53,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:51:53,055 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:53,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 36 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-24 23:51:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 198. [2023-11-24 23:51:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3678756476683938) internal successors, (264), 197 states have internal predecessors, (264), 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) [2023-11-24 23:51:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2023-11-24 23:51:53,076 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 12 [2023-11-24 23:51:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:53,076 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2023-11-24 23:51:53,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2023-11-24 23:51:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2023-11-24 23:51:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:51:53,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:53,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-24 23:51:53,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:53,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:53,283 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:53,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1351066791, now seen corresponding path program 1 times [2023-11-24 23:51:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:53,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352125530] [2023-11-24 23:51:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:53,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:53,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:53,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352125530] [2023-11-24 23:51:53,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352125530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750197818] [2023-11-24 23:51:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:53,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:53,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:53,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:53,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:51:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:53,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:51:53,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:53,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:53,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750197818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:53,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1787911348] [2023-11-24 23:51:53,463 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:51:53,463 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:53,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:53,463 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:53,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:53,803 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:51:54,277 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1515#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:51:54,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:51:54,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:51:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-24 23:51:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662722781] [2023-11-24 23:51:54,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:51:54,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:51:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:54,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:51:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:51:54,280 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 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) [2023-11-24 23:51:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:54,323 INFO L93 Difference]: Finished difference Result 329 states and 433 transitions. [2023-11-24 23:51:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:51:54,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 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) Word has length 14 [2023-11-24 23:51:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:54,325 INFO L225 Difference]: With dead ends: 329 [2023-11-24 23:51:54,326 INFO L226 Difference]: Without dead ends: 328 [2023-11-24 23:51:54,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:51:54,327 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:54,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:51:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-24 23:51:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2023-11-24 23:51:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 323 states have (on average 1.263157894736842) internal successors, (408), 327 states have internal predecessors, (408), 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) [2023-11-24 23:51:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 408 transitions. [2023-11-24 23:51:54,352 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 408 transitions. Word has length 14 [2023-11-24 23:51:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:54,352 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 408 transitions. [2023-11-24 23:51:54,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 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) [2023-11-24 23:51:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 408 transitions. [2023-11-24 23:51:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 23:51:54,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:54,355 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2023-11-24 23:51:54,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:54,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:54,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:54,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:54,561 INFO L85 PathProgramCache]: Analyzing trace with hash 681215329, now seen corresponding path program 2 times [2023-11-24 23:51:54,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:54,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631387698] [2023-11-24 23:51:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:54,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:54,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:54,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631387698] [2023-11-24 23:51:54,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631387698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142453839] [2023-11-24 23:51:54,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:51:54,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:54,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:54,706 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:54,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:51:54,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 23:51:54,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:51:54,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:51:54,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:54,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:54,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142453839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:54,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1262822841] [2023-11-24 23:51:54,895 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:51:54,895 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:54,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:54,896 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:54,896 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:54,994 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:51:55,200 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2443#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-24 23:51:55,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:51:55,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:51:55,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-24 23:51:55,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747560103] [2023-11-24 23:51:55,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:51:55,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:51:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:55,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:51:55,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:55,203 INFO L87 Difference]: Start difference. First operand 328 states and 408 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2023-11-24 23:51:55,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:55,419 INFO L93 Difference]: Finished difference Result 828 states and 1130 transitions. [2023-11-24 23:51:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:51:55,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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 29 [2023-11-24 23:51:55,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:55,425 INFO L225 Difference]: With dead ends: 828 [2023-11-24 23:51:55,425 INFO L226 Difference]: Without dead ends: 826 [2023-11-24 23:51:55,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:55,429 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 112 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:55,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 69 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:51:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-11-24 23:51:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 602. [2023-11-24 23:51:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 597 states have (on average 1.3031825795644891) internal successors, (778), 601 states have internal predecessors, (778), 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) [2023-11-24 23:51:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 778 transitions. [2023-11-24 23:51:55,471 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 778 transitions. Word has length 29 [2023-11-24 23:51:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:55,471 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 778 transitions. [2023-11-24 23:51:55,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2023-11-24 23:51:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 778 transitions. [2023-11-24 23:51:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 23:51:55,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:55,476 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2023-11-24 23:51:55,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:55,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:55,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:55,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1081708646, now seen corresponding path program 2 times [2023-11-24 23:51:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632590550] [2023-11-24 23:51:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:55,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:55,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632590550] [2023-11-24 23:51:55,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632590550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:55,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014946092] [2023-11-24 23:51:55,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:51:55,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:55,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:55,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:55,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:51:55,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 23:51:55,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:51:55,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:51:55,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:55,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:56,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014946092] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1220944194] [2023-11-24 23:51:56,042 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:51:56,042 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:56,042 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:56,043 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:56,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:56,337 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:51:56,899 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4259#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_#t~nondet1#1_59| Int)) (and (<= |v_ULTIMATE.start_main_#t~nondet1#1_59| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet1#1_59| 2147483648)) (not (= |v_ULTIMATE.start_main_#t~nondet1#1_59| 0)))) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-24 23:51:56,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:51:56,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:51:56,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-24 23:51:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078881521] [2023-11-24 23:51:56,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:51:56,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:51:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:51:56,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:56,901 INFO L87 Difference]: Start difference. First operand 602 states and 778 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) [2023-11-24 23:51:57,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:57,066 INFO L93 Difference]: Finished difference Result 1328 states and 1818 transitions. [2023-11-24 23:51:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:51:57,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 30 [2023-11-24 23:51:57,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:57,073 INFO L225 Difference]: With dead ends: 1328 [2023-11-24 23:51:57,074 INFO L226 Difference]: Without dead ends: 1326 [2023-11-24 23:51:57,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:57,076 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:57,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 78 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:57,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2023-11-24 23:51:57,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 828. [2023-11-24 23:51:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 823 states have (on average 1.307411907654921) internal successors, (1076), 827 states have internal predecessors, (1076), 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) [2023-11-24 23:51:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1076 transitions. [2023-11-24 23:51:57,130 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1076 transitions. Word has length 30 [2023-11-24 23:51:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:57,132 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1076 transitions. [2023-11-24 23:51:57,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) [2023-11-24 23:51:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1076 transitions. [2023-11-24 23:51:57,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:51:57,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:57,134 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1] [2023-11-24 23:51:57,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:57,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:51:57,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:57,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:57,340 INFO L85 PathProgramCache]: Analyzing trace with hash -139921252, now seen corresponding path program 2 times [2023-11-24 23:51:57,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:57,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542238604] [2023-11-24 23:51:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:57,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:57,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:57,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542238604] [2023-11-24 23:51:57,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542238604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:57,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318039579] [2023-11-24 23:51:57,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:51:57,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:57,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:57,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:57,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:51:57,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 23:51:57,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:51:57,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:51:57,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:57,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:57,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318039579] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [37827564] [2023-11-24 23:51:57,678 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:51:57,679 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:57,679 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:57,679 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:57,679 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:57,917 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:51:58,473 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6908#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:51:58,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:51:58,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:51:58,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-24 23:51:58,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88314764] [2023-11-24 23:51:58,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:51:58,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:51:58,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:58,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:51:58,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:58,475 INFO L87 Difference]: Start difference. First operand 828 states and 1076 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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) [2023-11-24 23:51:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:58,616 INFO L93 Difference]: Finished difference Result 2079 states and 2701 transitions. [2023-11-24 23:51:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:51:58,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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 32 [2023-11-24 23:51:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:58,629 INFO L225 Difference]: With dead ends: 2079 [2023-11-24 23:51:58,629 INFO L226 Difference]: Without dead ends: 2078 [2023-11-24 23:51:58,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:58,632 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:58,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 88 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:51:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2023-11-24 23:51:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2078. [2023-11-24 23:51:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2073 states have (on average 1.2021225277375784) internal successors, (2492), 2077 states have internal predecessors, (2492), 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) [2023-11-24 23:51:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2492 transitions. [2023-11-24 23:51:58,760 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2492 transitions. Word has length 32 [2023-11-24 23:51:58,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:58,760 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 2492 transitions. [2023-11-24 23:51:58,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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) [2023-11-24 23:51:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2492 transitions. [2023-11-24 23:51:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 23:51:58,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:58,769 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2023-11-24 23:51:58,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:58,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:51:58,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:51:58,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1787577901, now seen corresponding path program 3 times [2023-11-24 23:51:58,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:58,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604759082] [2023-11-24 23:51:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:58,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:59,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604759082] [2023-11-24 23:51:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604759082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639223809] [2023-11-24 23:51:59,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:51:59,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:59,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:59,267 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:59,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:51:59,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:51:59,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:51:59,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:51:59,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:59,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:59,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639223809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:59,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1048593543] [2023-11-24 23:51:59,835 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:51:59,835 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:59,835 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:59,835 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:59,836 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:59,905 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:00,110 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12040#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-24 23:52:00,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:00,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:00,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-24 23:52:00,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264124315] [2023-11-24 23:52:00,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 23:52:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 23:52:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:00,114 INFO L87 Difference]: Start difference. First operand 2078 states and 2492 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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) [2023-11-24 23:52:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:00,672 INFO L93 Difference]: Finished difference Result 4909 states and 6446 transitions. [2023-11-24 23:52:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-24 23:52:00,673 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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 65 [2023-11-24 23:52:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:00,699 INFO L225 Difference]: With dead ends: 4909 [2023-11-24 23:52:00,699 INFO L226 Difference]: Without dead ends: 4907 [2023-11-24 23:52:00,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:00,704 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 331 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:00,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 141 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2023-11-24 23:52:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 3234. [2023-11-24 23:52:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3229 states have (on average 1.2335088262620006) internal successors, (3983), 3233 states have internal predecessors, (3983), 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) [2023-11-24 23:52:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 3983 transitions. [2023-11-24 23:52:00,914 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 3983 transitions. Word has length 65 [2023-11-24 23:52:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:00,914 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 3983 transitions. [2023-11-24 23:52:00,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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) [2023-11-24 23:52:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 3983 transitions. [2023-11-24 23:52:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 23:52:00,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:00,920 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2023-11-24 23:52:00,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:01,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:01,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:01,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:01,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1666232252, now seen corresponding path program 3 times [2023-11-24 23:52:01,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:01,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555504450] [2023-11-24 23:52:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:01,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:01,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:01,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555504450] [2023-11-24 23:52:01,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555504450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:01,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280806717] [2023-11-24 23:52:01,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:52:01,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:01,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:01,419 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:01,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:52:01,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:52:01,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:01,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:52:01,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:01,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:01,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280806717] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:01,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1486982177] [2023-11-24 23:52:01,902 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:01,902 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:01,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:01,903 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:01,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:02,127 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:02,738 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21685#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-24 23:52:02,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:02,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-24 23:52:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387732134] [2023-11-24 23:52:02,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 23:52:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 23:52:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:02,742 INFO L87 Difference]: Start difference. First operand 3234 states and 3983 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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) [2023-11-24 23:52:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:03,276 INFO L93 Difference]: Finished difference Result 7696 states and 10116 transitions. [2023-11-24 23:52:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-24 23:52:03,277 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 66 [2023-11-24 23:52:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:03,316 INFO L225 Difference]: With dead ends: 7696 [2023-11-24 23:52:03,316 INFO L226 Difference]: Without dead ends: 7694 [2023-11-24 23:52:03,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 168 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:03,324 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 155 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:03,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 158 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:03,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7694 states. [2023-11-24 23:52:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7694 to 3958. [2023-11-24 23:52:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3953 states have (on average 1.245130280799393) internal successors, (4922), 3957 states have internal predecessors, (4922), 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) [2023-11-24 23:52:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 4922 transitions. [2023-11-24 23:52:03,625 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 4922 transitions. Word has length 66 [2023-11-24 23:52:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:03,626 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 4922 transitions. [2023-11-24 23:52:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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) [2023-11-24 23:52:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 4922 transitions. [2023-11-24 23:52:03,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-24 23:52:03,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:03,631 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1] [2023-11-24 23:52:03,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:03,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:52:03,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:03,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash 773609158, now seen corresponding path program 3 times [2023-11-24 23:52:03,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151167242] [2023-11-24 23:52:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:04,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:04,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151167242] [2023-11-24 23:52:04,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151167242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:04,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5068562] [2023-11-24 23:52:04,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:52:04,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:04,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:04,047 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:04,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:52:04,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:52:04,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:04,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:52:04,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:04,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5068562] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:04,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1794152602] [2023-11-24 23:52:04,597 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:04,597 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:04,597 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:04,598 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:04,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:04,785 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:05,407 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35295#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:52:05,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:05,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:05,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-24 23:52:05,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469601206] [2023-11-24 23:52:05,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:05,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 23:52:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:05,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 23:52:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:05,411 INFO L87 Difference]: Start difference. First operand 3958 states and 4922 transitions. Second operand has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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) [2023-11-24 23:52:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:06,390 INFO L93 Difference]: Finished difference Result 13997 states and 17830 transitions. [2023-11-24 23:52:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-24 23:52:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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 68 [2023-11-24 23:52:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:06,482 INFO L225 Difference]: With dead ends: 13997 [2023-11-24 23:52:06,483 INFO L226 Difference]: Without dead ends: 13996 [2023-11-24 23:52:06,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 174 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:06,496 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 150 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:06,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 168 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13996 states. [2023-11-24 23:52:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13996 to 13996. [2023-11-24 23:52:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13996 states, 13991 states have (on average 1.166464155528554) internal successors, (16320), 13995 states have internal predecessors, (16320), 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) [2023-11-24 23:52:07,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13996 states to 13996 states and 16320 transitions. [2023-11-24 23:52:07,681 INFO L78 Accepts]: Start accepts. Automaton has 13996 states and 16320 transitions. Word has length 68 [2023-11-24 23:52:07,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:07,681 INFO L495 AbstractCegarLoop]: Abstraction has 13996 states and 16320 transitions. [2023-11-24 23:52:07,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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) [2023-11-24 23:52:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 13996 states and 16320 transitions. [2023-11-24 23:52:07,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-24 23:52:07,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:07,718 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2023-11-24 23:52:07,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:07,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 23:52:07,924 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:07,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1804677047, now seen corresponding path program 4 times [2023-11-24 23:52:07,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:07,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785553442] [2023-11-24 23:52:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:07,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:08,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:08,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785553442] [2023-11-24 23:52:08,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785553442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:08,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547931584] [2023-11-24 23:52:08,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:52:08,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:08,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:08,787 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:08,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:52:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:08,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:52:08,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:09,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:10,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547931584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:10,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [891960492] [2023-11-24 23:52:10,407 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:10,408 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:10,408 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:10,409 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:10,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:10,514 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:10,866 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67939#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-24 23:52:10,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:10,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:10,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-24 23:52:10,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829028970] [2023-11-24 23:52:10,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:10,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-24 23:52:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:10,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-24 23:52:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:52:10,889 INFO L87 Difference]: Start difference. First operand 13996 states and 16320 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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) [2023-11-24 23:52:13,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:13,031 INFO L93 Difference]: Finished difference Result 33407 states and 42048 transitions. [2023-11-24 23:52:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-24 23:52:13,031 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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 137 [2023-11-24 23:52:13,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:13,105 INFO L225 Difference]: With dead ends: 33407 [2023-11-24 23:52:13,105 INFO L226 Difference]: Without dead ends: 33405 [2023-11-24 23:52:13,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:52:13,134 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 688 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:13,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 285 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:52:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33405 states. [2023-11-24 23:52:14,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33405 to 18996. [2023-11-24 23:52:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18996 states, 18991 states have (on average 1.1898794165657416) internal successors, (22597), 18995 states have internal predecessors, (22597), 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) [2023-11-24 23:52:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18996 states to 18996 states and 22597 transitions. [2023-11-24 23:52:14,968 INFO L78 Accepts]: Start accepts. Automaton has 18996 states and 22597 transitions. Word has length 137 [2023-11-24 23:52:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:14,969 INFO L495 AbstractCegarLoop]: Abstraction has 18996 states and 22597 transitions. [2023-11-24 23:52:14,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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) [2023-11-24 23:52:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 18996 states and 22597 transitions. [2023-11-24 23:52:15,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-24 23:52:15,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:15,005 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2023-11-24 23:52:15,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:15,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:15,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:15,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2039147160, now seen corresponding path program 4 times [2023-11-24 23:52:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:15,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386726614] [2023-11-24 23:52:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:16,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386726614] [2023-11-24 23:52:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386726614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105916001] [2023-11-24 23:52:16,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:52:16,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:16,247 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:16,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:52:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:16,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:52:16,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:16,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105916001] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:17,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [753682418] [2023-11-24 23:52:17,650 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:17,650 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:17,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:17,650 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:17,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:17,828 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:19,067 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '128094#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-24 23:52:19,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:19,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:19,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-24 23:52:19,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387449023] [2023-11-24 23:52:19,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:19,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-24 23:52:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-24 23:52:19,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:52:19,071 INFO L87 Difference]: Start difference. First operand 18996 states and 22597 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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) [2023-11-24 23:52:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:21,724 INFO L93 Difference]: Finished difference Result 50744 states and 64284 transitions. [2023-11-24 23:52:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-24 23:52:21,725 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 138 [2023-11-24 23:52:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:21,838 INFO L225 Difference]: With dead ends: 50744 [2023-11-24 23:52:21,838 INFO L226 Difference]: Without dead ends: 50742 [2023-11-24 23:52:21,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 360 SyntacticMatches, 23 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:52:21,855 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 420 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:21,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 327 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:52:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50742 states. [2023-11-24 23:52:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50742 to 21810. [2023-11-24 23:52:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21810 states, 21805 states have (on average 1.1992662233432698) internal successors, (26150), 21809 states have internal predecessors, (26150), 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) [2023-11-24 23:52:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21810 states to 21810 states and 26150 transitions. [2023-11-24 23:52:24,056 INFO L78 Accepts]: Start accepts. Automaton has 21810 states and 26150 transitions. Word has length 138 [2023-11-24 23:52:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:24,056 INFO L495 AbstractCegarLoop]: Abstraction has 21810 states and 26150 transitions. [2023-11-24 23:52:24,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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) [2023-11-24 23:52:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 21810 states and 26150 transitions. [2023-11-24 23:52:24,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-24 23:52:24,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:24,094 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1] [2023-11-24 23:52:24,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:24,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 23:52:24,300 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:24,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:24,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1115335706, now seen corresponding path program 4 times [2023-11-24 23:52:24,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:24,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571859461] [2023-11-24 23:52:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:24,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:25,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:25,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571859461] [2023-11-24 23:52:25,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571859461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172532097] [2023-11-24 23:52:25,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:52:25,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:25,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:25,071 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:25,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6b02fa-2ee8-4f71-89c1-dbc8d9c7f0ff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:52:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:25,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:52:25,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:25,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172532097] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:26,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [198002044] [2023-11-24 23:52:26,595 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:26,595 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:26,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:26,596 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:26,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:26,749 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:28,063 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '210900#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:52:28,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:28,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:28,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-24 23:52:28,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895541114] [2023-11-24 23:52:28,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-24 23:52:28,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-24 23:52:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:52:28,069 INFO L87 Difference]: Start difference. First operand 21810 states and 26150 transitions. Second operand has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 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)