./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje --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 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:10:22,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:10:23,071 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-09 05:10:23,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:10:23,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:10:23,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:10:23,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:10:23,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:10:23,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:10:23,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:10:23,143 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:10:23,144 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:10:23,144 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:10:23,145 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:10:23,148 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:10:23,149 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:10:23,150 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:10:23,150 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:10:23,151 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:10:23,151 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:10:23,152 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:10:23,153 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:10:23,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:10:23,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:10:23,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:10:23,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:10:23,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:10:23,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:10:23,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:10:23,157 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:10:23,157 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 05:10:23,181 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:10:23,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:10:23,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:10:23,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:10:23,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:10:23,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:10:23,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:10:23,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:10:23,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:10:23,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:10:23,186 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:10:23,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:10:23,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:10:23,188 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:10:23,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:10:23,189 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_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2024-11-09 05:10:23,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:10:23,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:10:23,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:10:23,703 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:10:23,706 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:10:23,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c Unable to find full path for "g++" [2024-11-09 05:10:26,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:10:26,950 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:10:26,951 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2024-11-09 05:10:26,962 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/data/2920f0136/f7db631e6574439a902c8318ebbc5b90/FLAG034d76be5 [2024-11-09 05:10:26,981 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/data/2920f0136/f7db631e6574439a902c8318ebbc5b90 [2024-11-09 05:10:26,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:10:26,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:10:26,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:10:26,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:10:26,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:10:26,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:10:26" (1/1) ... [2024-11-09 05:10:26,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea17f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:26, skipping insertion in model container [2024-11-09 05:10:26,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:10:26" (1/1) ... [2024-11-09 05:10:27,026 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:10:27,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:10:27,358 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:10:27,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:10:27,411 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:10:27,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27 WrapperNode [2024-11-09 05:10:27,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:10:27,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:10:27,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:10:27,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:10:27,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,465 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-11-09 05:10:27,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:10:27,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:10:27,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:10:27,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:10:27,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:10:27,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:10:27,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:10:27,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:10:27,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (1/1) ... [2024-11-09 05:10:27,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:10:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:27,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:10:27,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:10:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:10:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:10:27,750 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:10:27,753 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:10:27,902 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-09 05:10:27,903 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:10:27,937 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:10:27,938 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:10:27,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:10:27 BoogieIcfgContainer [2024-11-09 05:10:27,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:10:27,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:10:27,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:10:27,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:10:27,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:10:26" (1/3) ... [2024-11-09 05:10:27,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f39265c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:10:27, skipping insertion in model container [2024-11-09 05:10:27,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:27" (2/3) ... [2024-11-09 05:10:27,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f39265c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:10:27, skipping insertion in model container [2024-11-09 05:10:27,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:10:27" (3/3) ... [2024-11-09 05:10:27,954 INFO L112 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2024-11-09 05:10:27,982 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:10:27,982 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 05:10:28,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:10:28,123 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;@5eb9caef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:10:28,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 05:10:28,132 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) [2024-11-09 05:10:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:10:28,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:28,148 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:10:28,152 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:28,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash 63912907, now seen corresponding path program 1 times [2024-11-09 05:10:28,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315411268] [2024-11-09 05:10:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:28,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315411268] [2024-11-09 05:10:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315411268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:10:28,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:10:28,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:10:28,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555170976] [2024-11-09 05:10:28,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:10:28,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:10:28,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:10:28,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:10:28,612 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2024-11-09 05:10:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:28,721 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2024-11-09 05:10:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:10:28,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 [2024-11-09 05:10:28,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:28,739 INFO L225 Difference]: With dead ends: 45 [2024-11-09 05:10:28,739 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 05:10:28,745 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 [2024-11-09 05:10:28,754 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:28,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:10:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 05:10:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-09 05:10:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 22 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) [2024-11-09 05:10:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-09 05:10:28,813 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 5 [2024-11-09 05:10:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:28,814 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-09 05:10:28,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2024-11-09 05:10:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-09 05:10:28,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:10:28,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:28,817 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:10:28,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:10:28,819 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:28,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash 63912715, now seen corresponding path program 1 times [2024-11-09 05:10:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098431801] [2024-11-09 05:10:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:28,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:28,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098431801] [2024-11-09 05:10:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098431801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:10:28,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:10:28,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:10:28,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844333053] [2024-11-09 05:10:28,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:10:28,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:10:28,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:10:28,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:10:28,918 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2024-11-09 05:10:28,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:28,961 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-09 05:10:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:10:28,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2024-11-09 05:10:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:28,964 INFO L225 Difference]: With dead ends: 28 [2024-11-09 05:10:28,964 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 05:10:28,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:10:28,967 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:28,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:10:28,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 05:10:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2024-11-09 05:10:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-09 05:10:28,982 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2024-11-09 05:10:28,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:28,983 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-09 05:10:28,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2024-11-09 05:10:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-09 05:10:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 05:10:28,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:28,987 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 05:10:28,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:10:28,990 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:28,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:28,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1981294213, now seen corresponding path program 1 times [2024-11-09 05:10:28,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:28,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428815716] [2024-11-09 05:10:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:28,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:29,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:29,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428815716] [2024-11-09 05:10:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428815716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:10:29,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:10:29,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:10:29,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663722963] [2024-11-09 05:10:29,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:10:29,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:10:29,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:29,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:10:29,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:10:29,106 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:29,165 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-09 05:10:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:10:29,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 05:10:29,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:29,168 INFO L225 Difference]: With dead ends: 22 [2024-11-09 05:10:29,168 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 05:10:29,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:10:29,170 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:29,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:10:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 05:10:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 05:10:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-09 05:10:29,178 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2024-11-09 05:10:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:29,179 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-09 05:10:29,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-09 05:10:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 05:10:29,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:29,180 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:10:29,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:10:29,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:29,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1290578516, now seen corresponding path program 1 times [2024-11-09 05:10:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:29,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126944595] [2024-11-09 05:10:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:29,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:29,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126944595] [2024-11-09 05:10:29,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126944595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:10:29,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:10:29,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:10:29,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004760907] [2024-11-09 05:10:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:10:29,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:10:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:10:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:10:29,246 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:29,269 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-11-09 05:10:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:10:29,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 05:10:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:29,271 INFO L225 Difference]: With dead ends: 21 [2024-11-09 05:10:29,271 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 05:10:29,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:10:29,273 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:29,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:10:29,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 05:10:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 05:10:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 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) [2024-11-09 05:10:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-09 05:10:29,281 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 7 [2024-11-09 05:10:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:29,282 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-09 05:10:29,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-09 05:10:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:10:29,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:29,284 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:10:29,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:10:29,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:29,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1853015160, now seen corresponding path program 1 times [2024-11-09 05:10:29,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:29,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31420451] [2024-11-09 05:10:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:29,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:29,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31420451] [2024-11-09 05:10:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31420451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:29,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669750592] [2024-11-09 05:10:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:29,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:29,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:29,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:29,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:10:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:29,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:10:29,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:29,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669750592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:29,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142609467] [2024-11-09 05:10:29,822 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:10:29,824 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:29,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:29,839 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:29,840 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:30,268 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:30,514 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '334#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 51 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-09 05:10:30,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:30,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:30,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-09 05:10:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133973807] [2024-11-09 05:10:30,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:30,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:10:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:10:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:10:30,525 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:30,714 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-09 05:10:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:10:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 05:10:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:30,716 INFO L225 Difference]: With dead ends: 38 [2024-11-09 05:10:30,716 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 05:10:30,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:10:30,719 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:30,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:10:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 05:10:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 05:10:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.125) internal successors, (27), 25 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) [2024-11-09 05:10:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-09 05:10:30,736 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2024-11-09 05:10:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:30,737 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-09 05:10:30,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-09 05:10:30,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 05:10:30,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:30,739 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1] [2024-11-09 05:10:30,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:10:30,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:30,944 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:30,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1506826267, now seen corresponding path program 1 times [2024-11-09 05:10:30,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:30,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416250145] [2024-11-09 05:10:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:30,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:31,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:31,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416250145] [2024-11-09 05:10:31,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416250145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:31,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513233185] [2024-11-09 05:10:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:31,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:31,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:31,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:31,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:10:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:31,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:10:31,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:31,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:31,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513233185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:31,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [86585324] [2024-11-09 05:10:31,508 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:10:31,508 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:31,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:31,513 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:31,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:31,722 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:31,922 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '542#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50))' at error location [2024-11-09 05:10:31,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:31,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:31,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 05:10:31,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307599172] [2024-11-09 05:10:31,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:31,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:10:31,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:31,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:10:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:10:31,930 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:32,100 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2024-11-09 05:10:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:10:32,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 05:10:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:32,105 INFO L225 Difference]: With dead ends: 87 [2024-11-09 05:10:32,105 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 05:10:32,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:10:32,111 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:32,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 41 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:10:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 05:10:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2024-11-09 05:10:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 75 states have internal predecessors, (89), 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) [2024-11-09 05:10:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2024-11-09 05:10:32,145 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 20 [2024-11-09 05:10:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:32,147 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2024-11-09 05:10:32,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:10:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2024-11-09 05:10:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 05:10:32,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:32,151 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 05:10:32,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:10:32,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:10:32,356 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:32,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash -650336371, now seen corresponding path program 1 times [2024-11-09 05:10:32,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:32,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062509460] [2024-11-09 05:10:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:32,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:10:32,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062509460] [2024-11-09 05:10:32,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062509460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968312875] [2024-11-09 05:10:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:32,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:32,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:32,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:32,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:10:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:32,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:10:32,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:32,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:32,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968312875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:32,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1168241858] [2024-11-09 05:10:32,806 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:10:32,806 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:32,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:32,807 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:32,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:33,070 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:33,256 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '729#true' at error location [2024-11-09 05:10:33,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:33,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:33,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 05:10:33,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761478337] [2024-11-09 05:10:33,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:33,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:10:33,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:33,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:10:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:10:33,264 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 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) [2024-11-09 05:10:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:33,392 INFO L93 Difference]: Finished difference Result 182 states and 223 transitions. [2024-11-09 05:10:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:10:33,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 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 22 [2024-11-09 05:10:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:33,397 INFO L225 Difference]: With dead ends: 182 [2024-11-09 05:10:33,397 INFO L226 Difference]: Without dead ends: 121 [2024-11-09 05:10:33,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:10:33,400 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:33,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 49 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:10:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-09 05:10:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-09 05:10:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 120 states have internal predecessors, (134), 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) [2024-11-09 05:10:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2024-11-09 05:10:33,427 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 22 [2024-11-09 05:10:33,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:33,428 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 134 transitions. [2024-11-09 05:10:33,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 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) [2024-11-09 05:10:33,428 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2024-11-09 05:10:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 05:10:33,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:33,434 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 1, 1] [2024-11-09 05:10:33,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:10:33,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 05:10:33,636 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:33,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash 478868133, now seen corresponding path program 2 times [2024-11-09 05:10:33,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:33,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191322219] [2024-11-09 05:10:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:33,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191322219] [2024-11-09 05:10:33,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191322219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579902968] [2024-11-09 05:10:33,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:10:33,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:33,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:33,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:10:34,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 05:10:34,039 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:10:34,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:10:34,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:34,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579902968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:34,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735339269] [2024-11-09 05:10:34,481 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:10:34,481 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:34,482 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:34,482 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:34,482 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:34,606 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:34,866 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1512#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50))' at error location [2024-11-09 05:10:34,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:34,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:34,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 05:10:34,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467923760] [2024-11-09 05:10:34,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:34,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:10:34,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:10:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:10:34,872 INFO L87 Difference]: Start difference. First operand 121 states and 134 transitions. Second operand has 16 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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) [2024-11-09 05:10:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:35,105 INFO L93 Difference]: Finished difference Result 645 states and 738 transitions. [2024-11-09 05:10:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:10:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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 48 [2024-11-09 05:10:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:35,110 INFO L225 Difference]: With dead ends: 645 [2024-11-09 05:10:35,110 INFO L226 Difference]: Without dead ends: 644 [2024-11-09 05:10:35,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:10:35,112 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:35,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 76 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:10:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-09 05:10:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 427. [2024-11-09 05:10:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 425 states have (on average 1.1411764705882352) internal successors, (485), 426 states have internal predecessors, (485), 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) [2024-11-09 05:10:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 485 transitions. [2024-11-09 05:10:35,170 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 485 transitions. Word has length 48 [2024-11-09 05:10:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:35,170 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 485 transitions. [2024-11-09 05:10:35,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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) [2024-11-09 05:10:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 485 transitions. [2024-11-09 05:10:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:10:35,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:35,177 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 5, 5, 5, 4, 4, 4, 1, 1] [2024-11-09 05:10:35,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:10:35,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:35,378 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:35,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash 845048109, now seen corresponding path program 2 times [2024-11-09 05:10:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:35,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665998392] [2024-11-09 05:10:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:35,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 100 proven. 54 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 05:10:35,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:35,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665998392] [2024-11-09 05:10:35,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665998392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:35,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278892009] [2024-11-09 05:10:35,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:10:35,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:35,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:35,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:35,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:10:35,677 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 05:10:35,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:10:35,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:10:35,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 90 proven. 109 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:10:35,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 90 proven. 109 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:10:36,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278892009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:36,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1610458107] [2024-11-09 05:10:36,179 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:10:36,180 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:36,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:36,180 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:36,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:36,342 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:36,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2731#true' at error location [2024-11-09 05:10:36,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:36,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:36,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 21 [2024-11-09 05:10:36,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501176288] [2024-11-09 05:10:36,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:36,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 05:10:36,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 05:10:36,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-11-09 05:10:36,528 INFO L87 Difference]: Start difference. First operand 427 states and 485 transitions. Second operand has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 21 states have internal predecessors, (142), 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) [2024-11-09 05:10:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:36,707 INFO L93 Difference]: Finished difference Result 1038 states and 1212 transitions. [2024-11-09 05:10:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 05:10:36,708 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 21 states have internal predecessors, (142), 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 64 [2024-11-09 05:10:36,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:36,711 INFO L225 Difference]: With dead ends: 1038 [2024-11-09 05:10:36,711 INFO L226 Difference]: Without dead ends: 636 [2024-11-09 05:10:36,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-11-09 05:10:36,715 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:36,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 87 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:10:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-11-09 05:10:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 636. [2024-11-09 05:10:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 634 states have (on average 1.137223974763407) internal successors, (721), 635 states have internal predecessors, (721), 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) [2024-11-09 05:10:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 721 transitions. [2024-11-09 05:10:36,764 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 721 transitions. Word has length 64 [2024-11-09 05:10:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:36,765 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 721 transitions. [2024-11-09 05:10:36,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 21 states have internal predecessors, (142), 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) [2024-11-09 05:10:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 721 transitions. [2024-11-09 05:10:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 05:10:36,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:36,774 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 1, 1] [2024-11-09 05:10:36,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:10:36,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:36,975 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:36,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:36,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2091210715, now seen corresponding path program 3 times [2024-11-09 05:10:36,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:36,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520316626] [2024-11-09 05:10:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:36,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:37,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520316626] [2024-11-09 05:10:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520316626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964365219] [2024-11-09 05:10:37,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:10:37,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:37,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:37,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:10:37,653 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:10:37,653 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:10:37,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 05:10:37,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:37,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:38,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964365219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351160619] [2024-11-09 05:10:38,655 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:10:38,656 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:38,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:38,657 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:38,657 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:38,750 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:39,242 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5693#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50))' at error location [2024-11-09 05:10:39,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:39,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:39,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2024-11-09 05:10:39,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742964063] [2024-11-09 05:10:39,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:39,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 05:10:39,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 05:10:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 05:10:39,249 INFO L87 Difference]: Start difference. First operand 636 states and 721 transitions. Second operand has 32 states, 31 states have (on average 6.709677419354839) internal successors, (208), 31 states have internal predecessors, (208), 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) [2024-11-09 05:10:39,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:39,817 INFO L93 Difference]: Finished difference Result 3880 states and 4441 transitions. [2024-11-09 05:10:39,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 05:10:39,818 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 6.709677419354839) internal successors, (208), 31 states have internal predecessors, (208), 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 104 [2024-11-09 05:10:39,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:39,833 INFO L225 Difference]: With dead ends: 3880 [2024-11-09 05:10:39,834 INFO L226 Difference]: Without dead ends: 3879 [2024-11-09 05:10:39,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 274 SyntacticMatches, 15 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 05:10:39,837 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 231 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:39,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 144 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:10:39,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2024-11-09 05:10:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 1812. [2024-11-09 05:10:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.1408839779005524) internal successors, (2065), 1811 states have internal predecessors, (2065), 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) [2024-11-09 05:10:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2065 transitions. [2024-11-09 05:10:39,967 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2065 transitions. Word has length 104 [2024-11-09 05:10:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:39,968 INFO L471 AbstractCegarLoop]: Abstraction has 1812 states and 2065 transitions. [2024-11-09 05:10:39,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 6.709677419354839) internal successors, (208), 31 states have internal predecessors, (208), 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) [2024-11-09 05:10:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2065 transitions. [2024-11-09 05:10:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-09 05:10:39,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:39,975 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 14, 14, 14, 6, 6, 6, 1, 1] [2024-11-09 05:10:40,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:10:40,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:10:40,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:40,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1440823484, now seen corresponding path program 3 times [2024-11-09 05:10:40,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:40,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613131855] [2024-11-09 05:10:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 441 proven. 123 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-09 05:10:40,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613131855] [2024-11-09 05:10:40,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613131855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:40,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173842317] [2024-11-09 05:10:40,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:10:40,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:40,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:40,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:40,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:10:40,511 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:10:40,511 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:10:40,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:10:40,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 441 proven. 123 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-09 05:10:40,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 441 proven. 123 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-09 05:10:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173842317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:40,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [106568113] [2024-11-09 05:10:40,865 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:10:40,866 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:40,866 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:40,866 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:40,867 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:40,991 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:41,149 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12184#true' at error location [2024-11-09 05:10:41,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:41,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 05:10:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115537145] [2024-11-09 05:10:41,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:41,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:10:41,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:10:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2024-11-09 05:10:41,153 INFO L87 Difference]: Start difference. First operand 1812 states and 2065 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-09 05:10:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:41,304 INFO L93 Difference]: Finished difference Result 3641 states and 4155 transitions. [2024-11-09 05:10:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:10:41,305 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 15 states have internal predecessors, (100), 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 141 [2024-11-09 05:10:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:41,313 INFO L225 Difference]: With dead ends: 3641 [2024-11-09 05:10:41,313 INFO L226 Difference]: Without dead ends: 1868 [2024-11-09 05:10:41,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2024-11-09 05:10:41,318 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:41,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:10:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2024-11-09 05:10:41,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1868. [2024-11-09 05:10:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1866 states have (on average 1.1366559485530547) internal successors, (2121), 1867 states have internal predecessors, (2121), 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) [2024-11-09 05:10:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2121 transitions. [2024-11-09 05:10:41,415 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2121 transitions. Word has length 141 [2024-11-09 05:10:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:41,415 INFO L471 AbstractCegarLoop]: Abstraction has 1868 states and 2121 transitions. [2024-11-09 05:10:41,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-09 05:10:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2121 transitions. [2024-11-09 05:10:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-09 05:10:41,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:41,420 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 14, 14, 14, 14, 14, 14, 1, 1] [2024-11-09 05:10:41,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 05:10:41,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:10:41,622 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:41,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2042035772, now seen corresponding path program 4 times [2024-11-09 05:10:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:41,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613592276] [2024-11-09 05:10:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 977 proven. 679 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-09 05:10:42,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:42,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613592276] [2024-11-09 05:10:42,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613592276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:42,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633536294] [2024-11-09 05:10:42,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:10:42,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:42,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:42,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:10:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:42,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 05:10:42,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 977 proven. 679 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-09 05:10:42,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 977 proven. 679 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-09 05:10:43,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633536294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:43,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1584204868] [2024-11-09 05:10:43,454 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:10:43,454 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:43,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:43,454 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:43,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:43,572 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:43,768 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19337#true' at error location [2024-11-09 05:10:43,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:43,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:43,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-09 05:10:43,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283506898] [2024-11-09 05:10:43,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:43,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 05:10:43,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:43,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 05:10:43,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=959, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 05:10:43,773 INFO L87 Difference]: Start difference. First operand 1868 states and 2121 transitions. Second operand has 32 states, 32 states have (on average 6.625) internal successors, (212), 31 states have internal predecessors, (212), 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) [2024-11-09 05:10:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:44,002 INFO L93 Difference]: Finished difference Result 2086 states and 2369 transitions. [2024-11-09 05:10:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 05:10:44,003 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.625) internal successors, (212), 31 states have internal predecessors, (212), 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 197 [2024-11-09 05:10:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:44,005 INFO L225 Difference]: With dead ends: 2086 [2024-11-09 05:10:44,005 INFO L226 Difference]: Without dead ends: 313 [2024-11-09 05:10:44,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=523, Invalid=959, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 05:10:44,009 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:44,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:10:44,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-09 05:10:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2024-11-09 05:10:44,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 311 states have (on average 1.0514469453376205) internal successors, (327), 312 states have internal predecessors, (327), 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) [2024-11-09 05:10:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 327 transitions. [2024-11-09 05:10:44,024 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 327 transitions. Word has length 197 [2024-11-09 05:10:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:44,025 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 327 transitions. [2024-11-09 05:10:44,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.625) internal successors, (212), 31 states have internal predecessors, (212), 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) [2024-11-09 05:10:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 327 transitions. [2024-11-09 05:10:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 05:10:44,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:44,029 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 1, 1] [2024-11-09 05:10:44,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 05:10:44,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 05:10:44,230 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:44,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:44,231 INFO L85 PathProgramCache]: Analyzing trace with hash -258043099, now seen corresponding path program 4 times [2024-11-09 05:10:44,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:44,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269172218] [2024-11-09 05:10:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 0 proven. 3195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:46,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269172218] [2024-11-09 05:10:46,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269172218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524923812] [2024-11-09 05:10:46,104 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:10:46,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:46,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:46,107 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:46,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:10:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:46,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 05:10:46,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 0 proven. 3195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:46,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 0 proven. 3195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:49,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524923812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:49,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [20625050] [2024-11-09 05:10:49,163 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:10:49,163 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:49,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:49,164 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:49,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:49,248 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:50,897 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24644#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50))' at error location [2024-11-09 05:10:50,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:50,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:50,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2024-11-09 05:10:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165239163] [2024-11-09 05:10:50,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:50,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 05:10:50,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 05:10:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2035, Invalid=2795, Unknown=0, NotChecked=0, Total=4830 [2024-11-09 05:10:50,905 INFO L87 Difference]: Start difference. First operand 313 states and 327 transitions. Second operand has 64 states, 63 states have (on average 6.857142857142857) internal successors, (432), 63 states have internal predecessors, (432), 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) [2024-11-09 05:10:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:52,232 INFO L93 Difference]: Finished difference Result 5335 states and 6095 transitions. [2024-11-09 05:10:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-09 05:10:52,234 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 6.857142857142857) internal successors, (432), 63 states have internal predecessors, (432), 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 216 [2024-11-09 05:10:52,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:52,257 INFO L225 Difference]: With dead ends: 5335 [2024-11-09 05:10:52,258 INFO L226 Difference]: Without dead ends: 5334 [2024-11-09 05:10:52,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 578 SyntacticMatches, 31 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3462 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2035, Invalid=2795, Unknown=0, NotChecked=0, Total=4830 [2024-11-09 05:10:52,264 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 323 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:52,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 412 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:10:52,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2024-11-09 05:10:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5244. [2024-11-09 05:10:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5244 states, 5242 states have (on average 1.1402136589088134) internal successors, (5977), 5243 states have internal predecessors, (5977), 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) [2024-11-09 05:10:52,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5244 states to 5244 states and 5977 transitions. [2024-11-09 05:10:52,534 INFO L78 Accepts]: Start accepts. Automaton has 5244 states and 5977 transitions. Word has length 216 [2024-11-09 05:10:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:52,535 INFO L471 AbstractCegarLoop]: Abstraction has 5244 states and 5977 transitions. [2024-11-09 05:10:52,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 6.857142857142857) internal successors, (432), 63 states have internal predecessors, (432), 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) [2024-11-09 05:10:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5244 states and 5977 transitions. [2024-11-09 05:10:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-09 05:10:52,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:52,544 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 30, 30, 30, 14, 14, 14, 1, 1] [2024-11-09 05:10:52,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 05:10:52,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 05:10:52,749 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:52,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:52,750 INFO L85 PathProgramCache]: Analyzing trace with hash 726202052, now seen corresponding path program 5 times [2024-11-09 05:10:52,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:52,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763831259] [2024-11-09 05:10:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:52,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:10:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5782 backedges. 2049 proven. 3135 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-09 05:10:54,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:54,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763831259] [2024-11-09 05:10:54,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763831259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:54,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013775059] [2024-11-09 05:10:54,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:10:54,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:54,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:54,770 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:54,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:10:54,899 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-09 05:10:54,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:10:54,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 05:10:54,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5782 backedges. 2313 proven. 739 refuted. 0 times theorem prover too weak. 2730 trivial. 0 not checked. [2024-11-09 05:10:56,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5782 backedges. 2313 proven. 739 refuted. 0 times theorem prover too weak. 2730 trivial. 0 not checked. [2024-11-09 05:10:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013775059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:57,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [715945715] [2024-11-09 05:10:57,494 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:10:57,494 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:57,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:57,495 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:57,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:57,602 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:58,006 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36687#true' at error location [2024-11-09 05:10:58,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:58,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:58,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 17, 17] total 65 [2024-11-09 05:10:58,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199892378] [2024-11-09 05:10:58,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:58,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-09 05:10:58,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-09 05:10:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2138, Invalid=2974, Unknown=0, NotChecked=0, Total=5112 [2024-11-09 05:10:58,017 INFO L87 Difference]: Start difference. First operand 5244 states and 5977 transitions. Second operand has 65 states, 65 states have (on average 6.923076923076923) internal successors, (450), 65 states have internal predecessors, (450), 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) [2024-11-09 05:10:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:58,865 INFO L93 Difference]: Finished difference Result 8966 states and 10402 transitions. [2024-11-09 05:10:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-09 05:10:58,866 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 6.923076923076923) internal successors, (450), 65 states have internal predecessors, (450), 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 309 [2024-11-09 05:10:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:58,884 INFO L225 Difference]: With dead ends: 8966 [2024-11-09 05:10:58,885 INFO L226 Difference]: Without dead ends: 3929 [2024-11-09 05:10:58,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2138, Invalid=2974, Unknown=0, NotChecked=0, Total=5112 [2024-11-09 05:10:58,893 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:58,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 271 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:10:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2024-11-09 05:10:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3929. [2024-11-09 05:10:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.1352177234530176) internal successors, (4458), 3928 states have internal predecessors, (4458), 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) [2024-11-09 05:10:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 4458 transitions. [2024-11-09 05:10:59,087 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 4458 transitions. Word has length 309 [2024-11-09 05:10:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:59,088 INFO L471 AbstractCegarLoop]: Abstraction has 3929 states and 4458 transitions. [2024-11-09 05:10:59,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 6.923076923076923) internal successors, (450), 65 states have internal predecessors, (450), 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) [2024-11-09 05:10:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 4458 transitions. [2024-11-09 05:10:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-09 05:10:59,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:59,103 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 1, 1] [2024-11-09 05:10:59,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:10:59,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 05:10:59,304 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:10:59,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1011324635, now seen corresponding path program 5 times [2024-11-09 05:10:59,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:59,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428601310] [2024-11-09 05:10:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:59,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 13547 backedges. 0 proven. 13547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:11:05,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:05,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428601310] [2024-11-09 05:11:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428601310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:05,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030231946] [2024-11-09 05:11:05,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:11:05,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:05,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:05,420 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:05,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:11:05,725 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2024-11-09 05:11:05,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:11:05,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 05:11:05,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13547 backedges. 0 proven. 13547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:11:06,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 13547 backedges. 0 proven. 13547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:11:13,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030231946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:11:13,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1339384762] [2024-11-09 05:11:13,301 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:11:13,301 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:13,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:13,302 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:13,302 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:13,363 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:17,315 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '56083#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50))' at error location [2024-11-09 05:11:17,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:17,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:11:17,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2024-11-09 05:11:17,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946580307] [2024-11-09 05:11:17,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:17,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-09 05:11:17,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-09 05:11:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8147, Invalid=9675, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 05:11:17,329 INFO L87 Difference]: Start difference. First operand 3929 states and 4458 transitions. Second operand has 128 states, 127 states have (on average 6.929133858267717) internal successors, (880), 127 states have internal predecessors, (880), 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) [2024-11-09 05:11:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:24,067 INFO L93 Difference]: Finished difference Result 133506 states and 152603 transitions. [2024-11-09 05:11:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-09 05:11:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 6.929133858267717) internal successors, (880), 127 states have internal predecessors, (880), 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 440 [2024-11-09 05:11:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:24,573 INFO L225 Difference]: With dead ends: 133506 [2024-11-09 05:11:24,574 INFO L226 Difference]: Without dead ends: 133505 [2024-11-09 05:11:24,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1381 GetRequests, 1186 SyntacticMatches, 63 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13094 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=8147, Invalid=9675, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 05:11:24,651 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 1106 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:24,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 683 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 05:11:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133505 states. [2024-11-09 05:11:29,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133505 to 21974. [2024-11-09 05:11:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21974 states, 21972 states have (on average 1.1426815947569635) internal successors, (25107), 21973 states have internal predecessors, (25107), 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) [2024-11-09 05:11:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21974 states to 21974 states and 25107 transitions. [2024-11-09 05:11:29,990 INFO L78 Accepts]: Start accepts. Automaton has 21974 states and 25107 transitions. Word has length 440 [2024-11-09 05:11:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:29,991 INFO L471 AbstractCegarLoop]: Abstraction has 21974 states and 25107 transitions. [2024-11-09 05:11:29,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 6.929133858267717) internal successors, (880), 127 states have internal predecessors, (880), 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) [2024-11-09 05:11:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21974 states and 25107 transitions. [2024-11-09 05:11:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-09 05:11:30,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:30,016 INFO L215 NwaCegarLoop]: trace histogram [64, 64, 64, 63, 32, 32, 32, 32, 32, 32, 1, 1] [2024-11-09 05:11:30,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:30,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 05:11:30,217 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:11:30,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:30,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1748981692, now seen corresponding path program 6 times [2024-11-09 05:11:30,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:30,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011094298] [2024-11-09 05:11:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:30,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12064 backedges. 5117 proven. 3568 refuted. 0 times theorem prover too weak. 3379 trivial. 0 not checked. [2024-11-09 05:11:32,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011094298] [2024-11-09 05:11:32,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011094298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172568172] [2024-11-09 05:11:32,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:11:32,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:32,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:32,613 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:32,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:11:32,787 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:11:32,787 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:11:32,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 05:11:32,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12064 backedges. 5117 proven. 3568 refuted. 0 times theorem prover too weak. 3379 trivial. 0 not checked. [2024-11-09 05:11:33,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12064 backedges. 5117 proven. 3568 refuted. 0 times theorem prover too weak. 3379 trivial. 0 not checked. [2024-11-09 05:11:34,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172568172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:11:34,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [334407340] [2024-11-09 05:11:34,927 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:11:34,927 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:34,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:34,928 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:34,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:35,032 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:35,310 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '233646#true' at error location [2024-11-09 05:11:35,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:35,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:11:35,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 52 [2024-11-09 05:11:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691845116] [2024-11-09 05:11:35,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:35,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-09 05:11:35,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-09 05:11:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=2135, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 05:11:35,315 INFO L87 Difference]: Start difference. First operand 21974 states and 25107 transitions. Second operand has 53 states, 53 states have (on average 6.867924528301887) internal successors, (364), 52 states have internal predecessors, (364), 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) [2024-11-09 05:11:36,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:36,206 INFO L93 Difference]: Finished difference Result 43860 states and 50145 transitions. [2024-11-09 05:11:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 05:11:36,208 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.867924528301887) internal successors, (364), 52 states have internal predecessors, (364), 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 449 [2024-11-09 05:11:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:36,257 INFO L225 Difference]: With dead ends: 43860 [2024-11-09 05:11:36,258 INFO L226 Difference]: Without dead ends: 22107 [2024-11-09 05:11:36,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1379 GetRequests, 1306 SyntacticMatches, 15 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1405, Invalid=2135, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 05:11:36,286 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:36,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 218 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:11:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22107 states. [2024-11-09 05:11:37,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22107 to 22107. [2024-11-09 05:11:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22107 states, 22105 states have (on average 1.1418231169418684) internal successors, (25240), 22106 states have internal predecessors, (25240), 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) [2024-11-09 05:11:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22107 states to 22107 states and 25240 transitions. [2024-11-09 05:11:37,517 INFO L78 Accepts]: Start accepts. Automaton has 22107 states and 25240 transitions. Word has length 449 [2024-11-09 05:11:37,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:37,518 INFO L471 AbstractCegarLoop]: Abstraction has 22107 states and 25240 transitions. [2024-11-09 05:11:37,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.867924528301887) internal successors, (364), 52 states have internal predecessors, (364), 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) [2024-11-09 05:11:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 22107 states and 25240 transitions. [2024-11-09 05:11:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2024-11-09 05:11:37,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:37,537 INFO L215 NwaCegarLoop]: trace histogram [83, 83, 83, 82, 51, 51, 51, 32, 32, 32, 1, 1] [2024-11-09 05:11:37,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 05:11:37,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 05:11:37,738 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:11:37,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash -89164601, now seen corresponding path program 7 times [2024-11-09 05:11:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:37,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138294047] [2024-11-09 05:11:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20557 backedges. 0 proven. 20557 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:11:46,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:46,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138294047] [2024-11-09 05:11:46,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138294047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:46,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359560317] [2024-11-09 05:11:46,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:11:46,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:46,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:46,307 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:46,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:11:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:46,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-09 05:11:46,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20557 backedges. 0 proven. 20557 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:11:47,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 20557 backedges. 0 proven. 20557 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:11:59,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359560317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:11:59,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515762424] [2024-11-09 05:11:59,569 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:11:59,569 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:59,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:59,570 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:59,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:59,672 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:00,086 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '311676#true' at error location [2024-11-09 05:12:00,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:00,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:12:00,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 166 [2024-11-09 05:12:00,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245933565] [2024-11-09 05:12:00,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:00,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2024-11-09 05:12:00,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2024-11-09 05:12:00,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14170, Invalid=16280, Unknown=0, NotChecked=0, Total=30450 [2024-11-09 05:12:00,102 INFO L87 Difference]: Start difference. First operand 22107 states and 25240 transitions. Second operand has 168 states, 167 states have (on average 6.970059880239521) internal successors, (1164), 167 states have internal predecessors, (1164), 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) [2024-11-09 05:12:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:11,897 INFO L93 Difference]: Finished difference Result 30142 states and 35578 transitions. [2024-11-09 05:12:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2024-11-09 05:12:11,899 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 167 states have (on average 6.970059880239521) internal successors, (1164), 167 states have internal predecessors, (1164), 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 582 [2024-11-09 05:12:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:11,956 INFO L225 Difference]: With dead ends: 30142 [2024-11-09 05:12:11,957 INFO L226 Difference]: Without dead ends: 30141 [2024-11-09 05:12:11,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1827 GetRequests, 1654 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=14170, Invalid=16280, Unknown=0, NotChecked=0, Total=30450 [2024-11-09 05:12:11,967 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 594 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:11,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 683 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 05:12:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30141 states. [2024-11-09 05:12:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30141 to 30141. [2024-11-09 05:12:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30141 states, 30139 states have (on average 1.141245562228342) internal successors, (34396), 30140 states have internal predecessors, (34396), 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) [2024-11-09 05:12:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30141 states to 30141 states and 34396 transitions. [2024-11-09 05:12:13,886 INFO L78 Accepts]: Start accepts. Automaton has 30141 states and 34396 transitions. Word has length 582 [2024-11-09 05:12:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:13,888 INFO L471 AbstractCegarLoop]: Abstraction has 30141 states and 34396 transitions. [2024-11-09 05:12:13,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 167 states have (on average 6.970059880239521) internal successors, (1164), 167 states have internal predecessors, (1164), 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) [2024-11-09 05:12:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 30141 states and 34396 transitions. [2024-11-09 05:12:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2024-11-09 05:12:13,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:13,950 INFO L215 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 126, 126, 126, 1, 1] [2024-11-09 05:12:13,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 05:12:14,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:14,155 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:12:14,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash 473175333, now seen corresponding path program 6 times [2024-11-09 05:12:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:14,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634290730] [2024-11-09 05:12:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 55755 backedges. 0 proven. 55755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:12:30,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:30,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634290730] [2024-11-09 05:12:30,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634290730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:30,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71652360] [2024-11-09 05:12:30,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:12:30,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:30,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:30,845 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:30,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 05:12:31,106 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:12:31,107 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:12:31,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 05:12:31,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 55755 backedges. 36180 proven. 0 refuted. 0 times theorem prover too weak. 19575 trivial. 0 not checked. [2024-11-09 05:12:36,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:12:36,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71652360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:36,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:12:36,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [127] total 180 [2024-11-09 05:12:36,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973225461] [2024-11-09 05:12:36,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:36,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-09 05:12:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-09 05:12:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2024-11-09 05:12:36,549 INFO L87 Difference]: Start difference. First operand 30141 states and 34396 transitions. Second operand has 54 states, 54 states have (on average 6.833333333333333) internal successors, (369), 53 states have internal predecessors, (369), 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) [2024-11-09 05:12:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:37,327 INFO L93 Difference]: Finished difference Result 30958 states and 35329 transitions. [2024-11-09 05:12:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-09 05:12:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.833333333333333) internal successors, (369), 53 states have internal predecessors, (369), 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 888 [2024-11-09 05:12:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:37,341 INFO L225 Difference]: With dead ends: 30958 [2024-11-09 05:12:37,341 INFO L226 Difference]: Without dead ends: 1171 [2024-11-09 05:12:37,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2024-11-09 05:12:37,381 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 16 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:37,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 872 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:12:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-09 05:12:37,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2024-11-09 05:12:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.0008547008547009) internal successors, (1171), 1170 states have internal predecessors, (1171), 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) [2024-11-09 05:12:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1171 transitions. [2024-11-09 05:12:37,457 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1171 transitions. Word has length 888 [2024-11-09 05:12:37,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:37,459 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1171 transitions. [2024-11-09 05:12:37,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.833333333333333) internal successors, (369), 53 states have internal predecessors, (369), 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) [2024-11-09 05:12:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1171 transitions. [2024-11-09 05:12:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1171 [2024-11-09 05:12:37,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:37,494 INFO L215 NwaCegarLoop]: trace histogram [167, 167, 167, 166, 116, 116, 116, 51, 51, 51, 1, 1] [2024-11-09 05:12:37,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 05:12:37,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 05:12:37,695 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:12:37,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash -389975289, now seen corresponding path program 8 times [2024-11-09 05:12:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938554952] [2024-11-09 05:12:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 85195 backedges. 0 proven. 85195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:11,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:13:11,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938554952] [2024-11-09 05:13:11,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938554952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:13:11,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446792435] [2024-11-09 05:13:11,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:13:11,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:13:11,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:13:11,338 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:13:11,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 05:13:12,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 117 check-sat command(s) [2024-11-09 05:13:12,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:13:12,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-11-09 05:13:12,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 85195 backedges. 0 proven. 85195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:14,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:14:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 85195 backedges. 0 proven. 85195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:14:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446792435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:14:00,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864574082] [2024-11-09 05:14:00,210 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:14:00,210 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:14:00,211 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:14:00,211 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:14:00,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:14:00,287 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:14:01,207 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '423786#true' at error location [2024-11-09 05:14:01,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:14:01,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:14:01,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167, 167] total 334 [2024-11-09 05:14:01,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783646925] [2024-11-09 05:14:01,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:14:01,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 336 states [2024-11-09 05:14:01,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:14:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 336 interpolants. [2024-11-09 05:14:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56590, Invalid=60716, Unknown=0, NotChecked=0, Total=117306 [2024-11-09 05:14:01,240 INFO L87 Difference]: Start difference. First operand 1171 states and 1171 transitions. Second operand has 336 states, 335 states have (on average 6.985074626865671) internal successors, (2340), 335 states have internal predecessors, (2340), 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) [2024-11-09 05:14:39,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:14:39,564 INFO L93 Difference]: Finished difference Result 2348 states and 2515 transitions. [2024-11-09 05:14:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 336 states. [2024-11-09 05:14:39,565 INFO L78 Accepts]: Start accepts. Automaton has has 336 states, 335 states have (on average 6.985074626865671) internal successors, (2340), 335 states have internal predecessors, (2340), 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 1170 [2024-11-09 05:14:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:14:39,573 INFO L225 Difference]: With dead ends: 2348 [2024-11-09 05:14:39,573 INFO L226 Difference]: Without dead ends: 2347 [2024-11-09 05:14:39,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3675 GetRequests, 3334 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3625 ImplicationChecksByTransitivity, 59.9s TimeCoverageRelationStatistics Valid=56590, Invalid=60716, Unknown=0, NotChecked=0, Total=117306 [2024-11-09 05:14:39,583 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 579 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:14:39,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1349 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 05:14:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2024-11-09 05:14:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2347. [2024-11-09 05:14:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2346 states have (on average 1.0004262574595055) internal successors, (2347), 2346 states have internal predecessors, (2347), 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) [2024-11-09 05:14:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 2347 transitions. [2024-11-09 05:14:39,677 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 2347 transitions. Word has length 1170 [2024-11-09 05:14:39,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:14:39,679 INFO L471 AbstractCegarLoop]: Abstraction has 2347 states and 2347 transitions. [2024-11-09 05:14:39,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 336 states, 335 states have (on average 6.985074626865671) internal successors, (2340), 335 states have internal predecessors, (2340), 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) [2024-11-09 05:14:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 2347 transitions. [2024-11-09 05:14:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2347 [2024-11-09 05:14:39,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:14:39,720 INFO L215 NwaCegarLoop]: trace histogram [335, 335, 335, 334, 284, 284, 284, 51, 51, 51, 1, 1] [2024-11-09 05:14:39,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 05:14:39,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:14:39,925 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:14:39,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:14:39,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1647136647, now seen corresponding path program 9 times [2024-11-09 05:14:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:14:39,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55434827] [2024-11-09 05:14:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:14:39,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:14:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 362647 backedges. 0 proven. 362647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:40,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:17:40,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55434827] [2024-11-09 05:17:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55434827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:17:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112646707] [2024-11-09 05:17:40,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:17:40,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:40,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:17:40,347 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:17:40,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 05:17:40,953 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:17:40,953 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:17:40,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 3689 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-09 05:17:40,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:17:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 362647 backedges. 159700 proven. 15353 refuted. 0 times theorem prover too weak. 187594 trivial. 0 not checked. [2024-11-09 05:17:51,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:18:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 362647 backedges. 159700 proven. 15353 refuted. 0 times theorem prover too weak. 187594 trivial. 0 not checked. [2024-11-09 05:18:11,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112646707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:18:11,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734336698] [2024-11-09 05:18:11,792 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:18:11,792 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:18:11,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:18:11,792 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:18:11,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:18:11,893 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:18:13,905 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '450968#(<= |ULTIMATE.start_main_~y~0#1| 2147483647)' at error location [2024-11-09 05:18:13,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:18:13,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:18:13,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [335, 54, 54] total 389 [2024-11-09 05:18:13,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370815809] [2024-11-09 05:18:13,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:18:13,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 390 states [2024-11-09 05:18:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 390 interpolants. [2024-11-09 05:18:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58189, Invalid=99817, Unknown=0, NotChecked=0, Total=158006 [2024-11-09 05:18:13,935 INFO L87 Difference]: Start difference. First operand 2347 states and 2347 transitions. Second operand has 390 states, 390 states have (on average 7.371794871794871) internal successors, (2875), 389 states have internal predecessors, (2875), 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) [2024-11-09 05:18:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:46,463 INFO L93 Difference]: Finished difference Result 2347 states and 2347 transitions. [2024-11-09 05:18:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2024-11-09 05:18:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 390 states, 390 states have (on average 7.371794871794871) internal successors, (2875), 389 states have internal predecessors, (2875), 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 2346 [2024-11-09 05:18:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:46,468 INFO L225 Difference]: With dead ends: 2347 [2024-11-09 05:18:46,468 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:18:46,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7578 GetRequests, 6871 SyntacticMatches, 104 SemanticMatches, 603 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80443 ImplicationChecksByTransitivity, 98.3s TimeCoverageRelationStatistics Valid=133669, Invalid=231751, Unknown=0, NotChecked=0, Total=365420 [2024-11-09 05:18:46,499 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:46,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3638 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 05:18:46,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:18:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:18:46,504 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) [2024-11-09 05:18:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:18:46,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2346 [2024-11-09 05:18:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:46,513 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:18:46,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 390 states, 390 states have (on average 7.371794871794871) internal successors, (2875), 389 states have internal predecessors, (2875), 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) [2024-11-09 05:18:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:18:46,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:18:46,519 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-11-09 05:18:46,519 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 05:18:46,519 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 05:18:46,520 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 05:18:46,520 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 05:18:46,520 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-11-09 05:18:46,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 05:18:46,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:46,723 INFO L407 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1, 1, 1] [2024-11-09 05:18:46,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:18:49,507 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:18:49,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:18:49 BoogieIcfgContainer [2024-11-09 05:18:49,547 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:18:49,548 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:18:49,548 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:18:49,548 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:18:49,548 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:10:27" (3/4) ... [2024-11-09 05:18:49,551 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:18:49,560 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-09 05:18:49,560 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 05:18:49,560 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 05:18:49,646 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:18:49,646 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:18:49,646 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:18:49,647 INFO L158 Benchmark]: Toolchain (without parser) took 502661.20ms. Allocated memory was 142.6MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 104.1MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-09 05:18:49,647 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 110.1MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:18:49,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.06ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 92.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 05:18:49,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.11ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 91.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:18:49,648 INFO L158 Benchmark]: Boogie Preprocessor took 36.01ms. Allocated memory is still 142.6MB. Free memory was 91.5MB in the beginning and 90.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:18:49,649 INFO L158 Benchmark]: RCFGBuilder took 436.19ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 80.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 05:18:49,649 INFO L158 Benchmark]: TraceAbstraction took 501604.62ms. Allocated memory was 142.6MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 79.7MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2024-11-09 05:18:49,649 INFO L158 Benchmark]: Witness Printer took 98.53ms. Allocated memory is still 3.8GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 05:18:49,651 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 110.1MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 425.06ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 92.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.11ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 91.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.01ms. Allocated memory is still 142.6MB. Free memory was 91.5MB in the beginning and 90.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 436.19ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 80.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 501604.62ms. Allocated memory was 142.6MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 79.7MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Witness Printer took 98.53ms. Allocated memory is still 3.8GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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 - 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, 18 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 498.7s, OverallIterations: 20, TraceHistogramMax: 335, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.3s, AutomataDifference: 96.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3061 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3061 mSDsluCounter, 5153 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4707 mSDsCounter, 1202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8410 IncrementalHoareTripleChecker+Invalid, 9612 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1202 mSolverCounterUnsat, 446 mSDtfsCounter, 8410 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20369 GetRequests, 18317 SyntacticMatches, 240 SemanticMatches, 1812 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112518 ImplicationChecksByTransitivity, 213.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30141occurred in iteration=17, InterpolantAutomatonStates: 1231, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 113922 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 368.0s InterpolantComputationTime, 14041 NumberOfCodeBlocks, 13908 NumberOfCodeBlocksAsserted, 244 NumberOfCheckSat, 20111 ConstructedInterpolants, 0 QuantifiedInterpolants, 49189 SizeOfPredicates, 0 NumberOfNonLiveVariables, 10838 ConjunctsInSsa, 624 ConjunctsInUnsatCore, 51 InterpolantComputations, 5 PerfectInterpolantSequences, 796785/1633992 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 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((51 <= x) && (x <= 83)) && (y <= 19)) || (((51 <= x) && (x <= 52)) && (y <= 50))) || ((x == 50) && (y <= 50))) || (((y <= 6) && (x <= 96)) && (51 <= x))) || ((31 == x) && (y <= 31))) || (((x <= 70) && (y <= 32)) && (51 <= x))) || ((y <= 40) && (40 == x))) || (((y <= 44) && (51 <= x)) && (x <= 58))) || ((x == 11) && (y <= 11))) || (((51 <= x) && (y <= 3)) && (x <= 99))) || ((x == 8) && (y <= 8))) || ((x == 36) && (y <= 36))) || ((x == 1) && (y <= 1))) || ((y <= 46) && (46 == x))) || (((y <= 2) && (x <= 100)) && (51 <= x))) || ((y <= 47) && (47 == x))) || (((x <= 60) && (y <= 42)) && (51 <= x))) || ((y <= 12) && (x == 12))) || ((x == 13) && (y <= 13))) || (((y <= 0) && (51 <= x)) && (x <= 102))) || (((x <= 72) && (y <= 30)) && (51 <= x))) || (((x <= 92) && (y <= 10)) && (51 <= x))) || ((2 == x) && (y <= 2))) || ((y <= 29) && (29 == x))) || (((y <= 9) && (51 <= x)) && (x <= 93))) || (((51 <= x) && (x <= 94)) && (y <= 8))) || ((x == 38) && (y <= 38))) || ((16 == x) && (y <= 16))) || (((y <= 37) && (51 <= x)) && (x <= 65))) || (((y <= 45) && (51 <= x)) && (x <= 57))) || (((x <= 66) && (51 <= x)) && (y <= 36))) || (((x <= 75) && (y <= 27)) && (51 <= x))) || ((y <= 7) && (7 == x))) || ((y <= 39) && (x == 39))) || ((y <= 25) && (x == 25))) || ((5 == x) && (y <= 5))) || (((y <= 26) && (x <= 76)) && (51 <= x))) || ((x == 34) && (y <= 34))) || ((y <= 48) && (x == 48))) || (((y <= 14) && (51 <= x)) && (x <= 88))) || (((x <= 77) && (y <= 25)) && (51 <= x))) || (((y <= 24) && (x <= 78)) && (51 <= x))) || ((22 == x) && (y <= 22))) || ((y <= 15) && (x == 15))) || (((y <= 4) && (51 <= x)) && (x <= 98))) || (((x <= 89) && (51 <= x)) && (y <= 13))) || (((y <= 1) && (51 <= x)) && (x <= 101))) || ((y <= 6) && (6 == x))) || (((x <= 71) && (51 <= x)) && (y <= 31))) || ((y <= 28) && (x == 28))) || (((x <= 53) && (y <= 49)) && (51 <= x))) || ((19 == x) && (y <= 19))) || ((y <= 4) && (x == 4))) || ((y <= 24) && (x == 24))) || ((y <= 21) && (21 == x))) || ((3 == x) && (y <= 3))) || (((x <= 84) && (y <= 18)) && (51 <= x))) || (((x <= 82) && (y <= 20)) && (51 <= x))) || (((51 <= x) && (x <= 79)) && (y <= 23))) || (((x <= 68) && (51 <= x)) && (y <= 34))) || ((y <= 45) && (x == 45))) || ((y <= 42) && (42 == x))) || (((x <= 85) && (y <= 17)) && (51 <= x))) || ((y <= 17) && (x == 17))) || (((y <= 47) && (x <= 55)) && (51 <= x))) || ((y == 0) && (x == 0))) || ((y <= 33) && (x == 33))) || ((y <= 20) && (x == 20))) || ((y <= 10) && (x == 10))) || (((y <= 40) && (x <= 62)) && (51 <= x))) || (((y <= 28) && (x <= 74)) && (51 <= x))) || (((x <= 56) && (y <= 46)) && (51 <= x))) || (((x <= 86) && (51 <= x)) && (y <= 16))) || ((y <= 44) && (44 == x))) || (((51 <= x) && (y <= 22)) && (x <= 80))) || (((y <= 21) && (x <= 81)) && (51 <= x))) || ((y <= 27) && (x == 27))) || ((49 == x) && (y <= 49))) || (((y <= 33) && (51 <= x)) && (x <= 69))) || (((y <= 7) && (x <= 95)) && (51 <= x))) || (((y <= 43) && (51 <= x)) && (x <= 59))) || ((y <= 43) && (x == 43))) || ((41 == x) && (y <= 41))) || ((y <= 35) && (35 == x))) || ((32 == x) && (y <= 32))) || ((y <= 14) && (14 == x))) || (((y <= 48) && (x <= 54)) && (51 <= x))) || ((y <= 30) && (30 == x))) || ((23 == x) && (y <= 23))) || ((9 == x) && (y <= 9))) || (((y <= 5) && (51 <= x)) && (x <= 97))) || (((x <= 67) && (y <= 35)) && (51 <= x))) || (((((long) y + 1) <= 0) && (x <= 103)) && (51 <= x))) || ((y <= 37) && (x == 37))) || (((x <= 91) && (y <= 11)) && (51 <= x))) || (((x <= 90) && (y <= 12)) && (51 <= x))) || (((x <= 63) && (y <= 39)) && (51 <= x))) || (((x <= 64) && (y <= 38)) && (51 <= x))) || (((x <= 73) && (y <= 29)) && (51 <= x))) || ((y <= 26) && (x == 26))) || ((y <= 18) && (x == 18))) || ((51 == x) && (y <= 51))) || (((x <= 61) && (51 <= x)) && (y <= 41))) || (((y <= 15) && (x <= 87)) && (51 <= x))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:18:49,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eafdd2e-8a01-4fc8-ac11-7917387b2d08/bin/utaipan-verify-YMUCfTKeje/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