./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-acceleration/array_2-2-simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_2-2-simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c189c1cb91ea61745da6126e2d9c114f6ae511079741dc75bc227de256009336 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:00:11,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:00:11,620 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 05:00:11,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:00:11,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:00:11,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:00:11,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:00:11,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:00:11,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:00:11,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:00:11,683 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:00:11,683 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:00:11,683 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:00:11,683 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:00:11,684 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:00:11,684 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:00:11,686 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:00:11,686 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:00:11,686 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:00:11,686 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:00:11,687 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:00:11,687 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:00:11,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:00:11,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:00:11,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:00:11,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:00:11,688 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:00:11,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:00:11,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:00:11,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:00:11,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:00:11,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:00:11,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:00:11,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:00:11,689 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:00:11,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:00:11,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:00:11,690 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:00:11,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:00:11,690 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c189c1cb91ea61745da6126e2d9c114f6ae511079741dc75bc227de256009336 [2024-11-14 05:00:12,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:00:12,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:00:12,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:00:12,101 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:00:12,102 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:00:12,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/loop-acceleration/array_2-2-simple.i Unable to find full path for "g++" [2024-11-14 05:00:14,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:00:14,812 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:00:14,813 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/sv-benchmarks/c/loop-acceleration/array_2-2-simple.i [2024-11-14 05:00:14,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/data/a83b9d47b/fb5b0aa360f04f308081a3830cb058c2/FLAG967732d60 [2024-11-14 05:00:14,849 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/data/a83b9d47b/fb5b0aa360f04f308081a3830cb058c2 [2024-11-14 05:00:14,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:00:14,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:00:14,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:00:14,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:00:14,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:00:14,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:00:14" (1/1) ... [2024-11-14 05:00:14,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c5d202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:14, skipping insertion in model container [2024-11-14 05:00:14,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:00:14" (1/1) ... [2024-11-14 05:00:14,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:00:15,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:00:15,212 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:00:15,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:00:15,477 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:00:15,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15 WrapperNode [2024-11-14 05:00:15,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:00:15,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:00:15,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:00:15,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:00:15,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:15,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:15,829 INFO L138 Inliner]: procedures = 15, calls = 4112, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 4138 [2024-11-14 05:00:15,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:00:15,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:00:15,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:00:15,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:00:15,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:15,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:15,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:15,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:16,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:16,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:16,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:16,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:16,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:00:16,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:00:16,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:00:16,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:00:16,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (1/1) ... [2024-11-14 05:00:16,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:00:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:00:16,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:00:16,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:00:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:00:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:00:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:00:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:00:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:00:16,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:00:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:00:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:00:16,499 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:00:16,502 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:00:23,639 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-14 05:00:23,640 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:00:24,083 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:00:24,084 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 05:00:24,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:00:24 BoogieIcfgContainer [2024-11-14 05:00:24,085 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:00:24,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:00:24,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:00:24,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:00:24,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:00:14" (1/3) ... [2024-11-14 05:00:24,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cb2b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:00:24, skipping insertion in model container [2024-11-14 05:00:24,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:15" (2/3) ... [2024-11-14 05:00:24,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cb2b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:00:24, skipping insertion in model container [2024-11-14 05:00:24,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:00:24" (3/3) ... [2024-11-14 05:00:24,101 INFO L112 eAbstractionObserver]: Analyzing ICFG array_2-2-simple.i [2024-11-14 05:00:24,121 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:00:24,125 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG array_2-2-simple.i that has 1 procedures, 7 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-14 05:00:24,202 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:00:24,222 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31c5a143, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:00:24,223 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:00:24,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:00:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 05:00:24,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:00:24,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 05:00:24,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 05:00:24,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:00:24,246 INFO L85 PathProgramCache]: Analyzing trace with hash 69513, now seen corresponding path program 1 times [2024-11-14 05:00:24,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:00:24,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663995061] [2024-11-14 05:00:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:00:24,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:00:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:00:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:00:27,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:00:27,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663995061] [2024-11-14 05:00:27,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663995061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:00:27,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:00:27,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:00:27,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400572762] [2024-11-14 05:00:27,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:00:27,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:00:27,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:00:27,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:00:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:00:27,252 INFO L87 Difference]: Start difference. First operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:00:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:00:27,609 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2024-11-14 05:00:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:00:27,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-14 05:00:27,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:00:27,619 INFO L225 Difference]: With dead ends: 13 [2024-11-14 05:00:27,619 INFO L226 Difference]: Without dead ends: 9 [2024-11-14 05:00:27,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:00:27,626 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:00:27,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:00:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-14 05:00:27,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-14 05:00:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:00:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-14 05:00:27,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2024-11-14 05:00:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:00:27,664 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-14 05:00:27,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:00:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-14 05:00:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:00:27,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:00:27,667 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-11-14 05:00:27,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:00:27,668 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 05:00:27,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:00:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2070905349, now seen corresponding path program 1 times [2024-11-14 05:00:27,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:00:27,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550215220] [2024-11-14 05:00:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:00:27,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:00:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:00:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:00:29,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:00:29,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550215220] [2024-11-14 05:00:30,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550215220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:00:30,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482711523] [2024-11-14 05:00:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:00:30,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:00:30,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:00:30,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:00:30,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:00:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:00:32,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 8256 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:00:32,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:00:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:00:32,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:00:32,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482711523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:00:32,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:00:32,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-14 05:00:32,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326817804] [2024-11-14 05:00:32,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:00:32,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:00:32,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:00:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:00:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:00:32,431 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:00:32,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:00:32,650 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2024-11-14 05:00:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:00:32,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 05:00:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:00:32,651 INFO L225 Difference]: With dead ends: 9 [2024-11-14 05:00:32,652 INFO L226 Difference]: Without dead ends: 8 [2024-11-14 05:00:32,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:00:32,653 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:00:32,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:00:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-14 05:00:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-14 05:00:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2024-11-14 05:00:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-11-14 05:00:32,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2024-11-14 05:00:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:00:32,659 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-11-14 05:00:32,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:00:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-11-14 05:00:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:00:32,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:00:32,659 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2024-11-14 05:00:32,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:00:32,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:00:32,860 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 05:00:32,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:00:32,861 INFO L85 PathProgramCache]: Analyzing trace with hash -226443577, now seen corresponding path program 1 times [2024-11-14 05:00:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:00:32,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197037068] [2024-11-14 05:00:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:00:32,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:00:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:00:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:00:33,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:00:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197037068] [2024-11-14 05:00:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197037068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:00:33,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:00:33,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:00:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002029313] [2024-11-14 05:00:33,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:00:33,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:00:33,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:00:33,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:00:33,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:00:33,916 INFO L87 Difference]: Start difference. First operand 8 states and 8 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) [2024-11-14 05:00:34,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:00:34,154 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2024-11-14 05:00:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:00:34,155 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 [2024-11-14 05:00:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:00:34,155 INFO L225 Difference]: With dead ends: 8 [2024-11-14 05:00:34,155 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 05:00:34,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:00:34,158 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:00:34,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:00:34,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 05:00:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 05:00:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:00:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 05:00:34,161 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2024-11-14 05:00:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:00:34,161 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 05:00:34,161 INFO L472 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) [2024-11-14 05:00:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 05:00:34,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 05:00:34,166 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-14 05:00:34,167 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-14 05:00:34,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:00:34,171 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-14 05:00:34,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 05:00:34,194 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:00:34,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:00:34 BoogieIcfgContainer [2024-11-14 05:00:34,211 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:00:34,213 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:00:34,213 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:00:34,213 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:00:34,215 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:00:24" (3/4) ... [2024-11-14 05:00:34,217 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 05:00:34,273 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-14 05:00:34,279 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-14 05:00:34,285 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-14 05:00:34,291 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 05:00:34,667 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:00:34,667 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 05:00:34,667 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:00:34,670 INFO L158 Benchmark]: Toolchain (without parser) took 19814.41ms. Allocated memory was 109.1MB in the beginning and 578.8MB in the end (delta: 469.8MB). Free memory was 83.3MB in the beginning and 188.1MB in the end (delta: -104.8MB). Peak memory consumption was 364.6MB. Max. memory is 16.1GB. [2024-11-14 05:00:34,670 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:00:34,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 622.56ms. Allocated memory is still 109.1MB. Free memory was 83.3MB in the beginning and 73.3MB in the end (delta: 10.0MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2024-11-14 05:00:34,672 INFO L158 Benchmark]: Boogie Procedure Inliner took 350.68ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 44.5MB in the end (delta: 28.9MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2024-11-14 05:00:34,672 INFO L158 Benchmark]: Boogie Preprocessor took 345.92ms. Allocated memory is still 109.1MB. Free memory was 44.5MB in the beginning and 40.7MB in the end (delta: 3.8MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2024-11-14 05:00:34,673 INFO L158 Benchmark]: RCFGBuilder took 7907.81ms. Allocated memory was 109.1MB in the beginning and 402.7MB in the end (delta: 293.6MB). Free memory was 40.7MB in the beginning and 216.0MB in the end (delta: -175.3MB). Peak memory consumption was 229.9MB. Max. memory is 16.1GB. [2024-11-14 05:00:34,673 INFO L158 Benchmark]: TraceAbstraction took 10123.16ms. Allocated memory was 402.7MB in the beginning and 578.8MB in the end (delta: 176.2MB). Free memory was 216.0MB in the beginning and 225.9MB in the end (delta: -9.9MB). Peak memory consumption was 166.3MB. Max. memory is 16.1GB. [2024-11-14 05:00:34,673 INFO L158 Benchmark]: Witness Printer took 454.60ms. Allocated memory is still 578.8MB. Free memory was 225.9MB in the beginning and 188.1MB in the end (delta: 37.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-14 05:00:34,679 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 622.56ms. Allocated memory is still 109.1MB. Free memory was 83.3MB in the beginning and 73.3MB in the end (delta: 10.0MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 350.68ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 44.5MB in the end (delta: 28.9MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 345.92ms. Allocated memory is still 109.1MB. Free memory was 44.5MB in the beginning and 40.7MB in the end (delta: 3.8MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * RCFGBuilder took 7907.81ms. Allocated memory was 109.1MB in the beginning and 402.7MB in the end (delta: 293.6MB). Free memory was 40.7MB in the beginning and 216.0MB in the end (delta: -175.3MB). Peak memory consumption was 229.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10123.16ms. Allocated memory was 402.7MB in the beginning and 578.8MB in the end (delta: 176.2MB). Free memory was 216.0MB in the beginning and 225.9MB in the end (delta: -9.9MB). Peak memory consumption was 166.3MB. Max. memory is 16.1GB. * Witness Printer took 454.60ms. Allocated memory is still 578.8MB. Free memory was 225.9MB in the beginning and 188.1MB in the end (delta: 37.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 3 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=1, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 8256 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 5/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((0 < i) || (i == 0)) RESULT: Ultimate proved your program to be correct! [2024-11-14 05:00:34,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d050b848-dd9f-4222-b34b-ec923c8c5643/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE