./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f12bfc45347636ba11cd9198984e4ca6a9fb471afaf773fd02be6e88eb44e8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:46:42,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:46:42,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 05:46:42,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:46:42,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:46:42,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:46:42,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:46:42,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:46:42,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:46:42,952 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:46:42,952 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:46:42,952 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:46:42,952 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:46:42,952 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:46:42,952 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:46:42,953 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:46:42,953 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:46:42,953 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:46:42,953 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:46:42,953 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:46:42,953 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:46:42,953 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:46:42,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:46:42,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:46:42,957 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:46:42,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:46:42,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:46:42,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:46:42,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:46:42,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:46:42,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:46:42,958 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:46:42,958 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 05:46:42,958 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:46:42,958 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:46:42,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:46:42,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:46:42,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:46:42,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:46:42,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:46:42,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:46:42,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:46:42,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:46:42,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:46:42,961 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:46:42,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:46:42,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:46:42,961 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:46:42,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:46:42,961 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f12bfc45347636ba11cd9198984e4ca6a9fb471afaf773fd02be6e88eb44e8c [2024-11-14 05:46:43,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:46:43,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:46:43,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:46:43,339 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:46:43,340 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:46:43,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c Unable to find full path for "g++" [2024-11-14 05:46:45,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:46:45,960 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:46:45,961 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2024-11-14 05:46:45,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/data/0b2eb0bfa/eb36e31884804208944b4149650ad9a9/FLAG0724aae7e [2024-11-14 05:46:45,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/data/0b2eb0bfa/eb36e31884804208944b4149650ad9a9 [2024-11-14 05:46:45,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:46:45,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:46:45,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:46:45,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:46:46,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:46:46,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:46:45" (1/1) ... [2024-11-14 05:46:46,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f862e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46, skipping insertion in model container [2024-11-14 05:46:46,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:46:45" (1/1) ... [2024-11-14 05:46:46,026 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:46:46,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:46:46,260 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:46:46,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:46:46,315 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:46:46,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46 WrapperNode [2024-11-14 05:46:46,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:46:46,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:46:46,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:46:46,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:46:46,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,362 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 109 [2024-11-14 05:46:46,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:46:46,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:46:46,364 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:46:46,364 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:46:46,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:46:46,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:46:46,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:46:46,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:46:46,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (1/1) ... [2024-11-14 05:46:46,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:46:46,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:46,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:46:46,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:46:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:46:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:46:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:46:46,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:46:46,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:46:46,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:46:46,615 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:46:46,619 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:46:47,308 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-11-14 05:46:47,309 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:46:47,402 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:46:47,402 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 05:46:47,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:46:47 BoogieIcfgContainer [2024-11-14 05:46:47,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:46:47,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:46:47,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:46:47,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:46:47,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:46:45" (1/3) ... [2024-11-14 05:46:47,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd5c4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:46:47, skipping insertion in model container [2024-11-14 05:46:47,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:46" (2/3) ... [2024-11-14 05:46:47,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd5c4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:46:47, skipping insertion in model container [2024-11-14 05:46:47,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:46:47" (3/3) ... [2024-11-14 05:46:47,423 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound5.c [2024-11-14 05:46:47,444 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:46:47,447 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG prod4br-ll_unwindbound5.c that has 2 procedures, 102 locations, 1 initial locations, 1 loop locations, and 44 error locations. [2024-11-14 05:46:47,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:46:47,558 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;@6ce380f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:46:47,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-14 05:46:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 97 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:46:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 05:46:47,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:47,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 05:46:47,574 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:47,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash 190340, now seen corresponding path program 1 times [2024-11-14 05:46:47,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:47,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959696567] [2024-11-14 05:46:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:47,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:47,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959696567] [2024-11-14 05:46:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959696567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:47,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:47,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289619908] [2024-11-14 05:46:47,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:47,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:46:47,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:47,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:46:47,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:46:47,823 INFO L87 Difference]: Start difference. First operand has 102 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 97 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:47,875 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2024-11-14 05:46:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:46:47,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-14 05:46:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:47,888 INFO L225 Difference]: With dead ends: 116 [2024-11-14 05:46:47,888 INFO L226 Difference]: Without dead ends: 99 [2024-11-14 05:46:47,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:46:47,902 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:47,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:46:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-14 05:46:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-14 05:46:47,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 95 states have internal predecessors, (100), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:46:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2024-11-14 05:46:47,968 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 3 [2024-11-14 05:46:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:47,969 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2024-11-14 05:46:47,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2024-11-14 05:46:47,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 05:46:47,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:47,970 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 05:46:47,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:46:47,970 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:47,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:47,974 INFO L85 PathProgramCache]: Analyzing trace with hash 186851, now seen corresponding path program 1 times [2024-11-14 05:46:47,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:47,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066758060] [2024-11-14 05:46:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:47,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:48,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:48,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066758060] [2024-11-14 05:46:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066758060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:48,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:48,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197561404] [2024-11-14 05:46:48,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:48,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:46:48,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:46:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:48,133 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:48,213 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2024-11-14 05:46:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:46:48,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-14 05:46:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:48,215 INFO L225 Difference]: With dead ends: 99 [2024-11-14 05:46:48,215 INFO L226 Difference]: Without dead ends: 98 [2024-11-14 05:46:48,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:46:48,217 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 103 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:48,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 190 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:46:48,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-14 05:46:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-14 05:46:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 94 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:46:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-14 05:46:48,227 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 3 [2024-11-14 05:46:48,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:48,228 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-14 05:46:48,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-14 05:46:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:46:48,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:48,228 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:46:48,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:46:48,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:48,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash 5792428, now seen corresponding path program 1 times [2024-11-14 05:46:48,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:48,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344541511] [2024-11-14 05:46:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:48,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:48,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:48,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344541511] [2024-11-14 05:46:48,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344541511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:48,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:48,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:48,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107606128] [2024-11-14 05:46:48,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:48,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:46:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:46:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:48,324 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:48,405 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2024-11-14 05:46:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:46:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 05:46:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:48,407 INFO L225 Difference]: With dead ends: 114 [2024-11-14 05:46:48,407 INFO L226 Difference]: Without dead ends: 102 [2024-11-14 05:46:48,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:46:48,409 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 3 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:48,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 290 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:46:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-14 05:46:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-14 05:46:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 98 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:46:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-11-14 05:46:48,424 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 4 [2024-11-14 05:46:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:48,424 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-11-14 05:46:48,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-11-14 05:46:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:46:48,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:48,425 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 05:46:48,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:46:48,426 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:48,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:48,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1271557678, now seen corresponding path program 1 times [2024-11-14 05:46:48,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:48,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39863382] [2024-11-14 05:46:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:48,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:46:48,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490973517] [2024-11-14 05:46:48,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:48,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:48,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:48,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:48,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:46:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:48,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:46:48,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:48,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:46:48,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:48,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39863382] [2024-11-14 05:46:48,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:46:48,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490973517] [2024-11-14 05:46:48,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490973517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:48,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:46:48,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973736771] [2024-11-14 05:46:48,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:48,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:48,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:48,731 INFO L87 Difference]: Start difference. First operand 102 states and 107 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) [2024-11-14 05:46:49,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:49,298 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2024-11-14 05:46:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:49,299 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 [2024-11-14 05:46:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:49,300 INFO L225 Difference]: With dead ends: 143 [2024-11-14 05:46:49,301 INFO L226 Difference]: Without dead ends: 134 [2024-11-14 05:46:49,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:49,302 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:49,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 89 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:46:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-14 05:46:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2024-11-14 05:46:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 121 states have internal predecessors, (140), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:46:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2024-11-14 05:46:49,327 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 6 [2024-11-14 05:46:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:49,327 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2024-11-14 05:46:49,327 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) [2024-11-14 05:46:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2024-11-14 05:46:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:46:49,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:49,328 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:49,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:46:49,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:49,532 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:49,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash 763582410, now seen corresponding path program 1 times [2024-11-14 05:46:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109537046] [2024-11-14 05:46:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:46:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91194061] [2024-11-14 05:46:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:49,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:49,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:49,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:49,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:46:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:49,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:46:49,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:49,744 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:46:49,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109537046] [2024-11-14 05:46:49,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:46:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91194061] [2024-11-14 05:46:49,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91194061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:49,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:49,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:46:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011652417] [2024-11-14 05:46:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:49,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:49,746 INFO L87 Difference]: Start difference. First operand 127 states and 148 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) [2024-11-14 05:46:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:50,058 INFO L93 Difference]: Finished difference Result 181 states and 221 transitions. [2024-11-14 05:46:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:50,059 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 [2024-11-14 05:46:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:50,061 INFO L225 Difference]: With dead ends: 181 [2024-11-14 05:46:50,061 INFO L226 Difference]: Without dead ends: 167 [2024-11-14 05:46:50,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:50,062 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 34 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:50,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 85 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:46:50,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-14 05:46:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2024-11-14 05:46:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 150 states have internal predecessors, (188), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:46:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2024-11-14 05:46:50,089 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 198 transitions. Word has length 7 [2024-11-14 05:46:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:50,089 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 198 transitions. [2024-11-14 05:46:50,089 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) [2024-11-14 05:46:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 198 transitions. [2024-11-14 05:46:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:46:50,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:50,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:50,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:46:50,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:50,294 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:50,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:50,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2098749008, now seen corresponding path program 1 times [2024-11-14 05:46:50,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:50,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936268208] [2024-11-14 05:46:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:50,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:46:50,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449673892] [2024-11-14 05:46:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:50,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:50,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:50,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:50,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:46:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:50,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:46:50,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:50,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:46:50,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:50,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936268208] [2024-11-14 05:46:50,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:46:50,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449673892] [2024-11-14 05:46:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449673892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:50,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:46:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360430257] [2024-11-14 05:46:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:50,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:50,505 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:50,970 INFO L93 Difference]: Finished difference Result 169 states and 205 transitions. [2024-11-14 05:46:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:50,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 05:46:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:50,972 INFO L225 Difference]: With dead ends: 169 [2024-11-14 05:46:50,972 INFO L226 Difference]: Without dead ends: 168 [2024-11-14 05:46:50,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:50,974 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 24 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:50,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 92 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:46:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-14 05:46:50,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 157. [2024-11-14 05:46:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 108 states have (on average 1.7314814814814814) internal successors, (187), 150 states have internal predecessors, (187), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:46:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 197 transitions. [2024-11-14 05:46:50,987 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 197 transitions. Word has length 8 [2024-11-14 05:46:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:50,988 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 197 transitions. [2024-11-14 05:46:50,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 197 transitions. [2024-11-14 05:46:50,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 05:46:50,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:50,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:51,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:46:51,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:51,193 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:51,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash -636709748, now seen corresponding path program 1 times [2024-11-14 05:46:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:51,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474742542] [2024-11-14 05:46:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:46:51,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076462918] [2024-11-14 05:46:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:51,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:51,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:51,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:51,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:46:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:51,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:46:51,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:51,425 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:46:51,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474742542] [2024-11-14 05:46:51,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:46:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076462918] [2024-11-14 05:46:51,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076462918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:51,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:51,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:46:51,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807896940] [2024-11-14 05:46:51,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:51,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:51,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:51,429 INFO L87 Difference]: Start difference. First operand 157 states and 197 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:51,821 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2024-11-14 05:46:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:51,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 05:46:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:51,823 INFO L225 Difference]: With dead ends: 165 [2024-11-14 05:46:51,824 INFO L226 Difference]: Without dead ends: 162 [2024-11-14 05:46:51,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:51,828 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 31 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:51,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 86 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:46:51,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-14 05:46:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2024-11-14 05:46:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 150 states have internal predecessors, (183), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:46:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 193 transitions. [2024-11-14 05:46:51,856 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 193 transitions. Word has length 9 [2024-11-14 05:46:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:51,856 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 193 transitions. [2024-11-14 05:46:51,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:51,857 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 193 transitions. [2024-11-14 05:46:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 05:46:51,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:51,857 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:51,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 05:46:52,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:52,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:52,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1736834354, now seen corresponding path program 1 times [2024-11-14 05:46:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:52,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986856651] [2024-11-14 05:46:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:52,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986856651] [2024-11-14 05:46:52,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986856651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:52,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:52,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095371173] [2024-11-14 05:46:52,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:52,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:46:52,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:52,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:46:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:52,149 INFO L87 Difference]: Start difference. First operand 157 states and 193 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:54,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 05:46:57,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 05:46:57,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:57,225 INFO L93 Difference]: Finished difference Result 265 states and 318 transitions. [2024-11-14 05:46:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:46:57,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 05:46:57,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:57,227 INFO L225 Difference]: With dead ends: 265 [2024-11-14 05:46:57,227 INFO L226 Difference]: Without dead ends: 264 [2024-11-14 05:46:57,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:57,229 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 87 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:57,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 170 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2024-11-14 05:46:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-14 05:46:57,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 181. [2024-11-14 05:46:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 131 states have (on average 1.6946564885496183) internal successors, (222), 173 states have internal predecessors, (222), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:46:57,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 234 transitions. [2024-11-14 05:46:57,252 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 234 transitions. Word has length 10 [2024-11-14 05:46:57,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:57,252 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 234 transitions. [2024-11-14 05:46:57,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 234 transitions. [2024-11-14 05:46:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:46:57,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:57,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:57,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 05:46:57,253 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:57,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:57,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1992709810, now seen corresponding path program 1 times [2024-11-14 05:46:57,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:57,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433346873] [2024-11-14 05:46:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:57,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:57,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433346873] [2024-11-14 05:46:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433346873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:57,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:46:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180297093] [2024-11-14 05:46:57,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:57,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:46:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:46:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:57,366 INFO L87 Difference]: Start difference. First operand 181 states and 234 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:59,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:59,694 INFO L93 Difference]: Finished difference Result 265 states and 316 transitions. [2024-11-14 05:46:59,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:46:59,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-14 05:46:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:59,696 INFO L225 Difference]: With dead ends: 265 [2024-11-14 05:46:59,696 INFO L226 Difference]: Without dead ends: 264 [2024-11-14 05:46:59,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:46:59,697 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 87 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:59,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 172 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 05:46:59,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-14 05:46:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 181. [2024-11-14 05:46:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 131 states have (on average 1.6793893129770991) internal successors, (220), 173 states have internal predecessors, (220), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:46:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 232 transitions. [2024-11-14 05:46:59,713 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 232 transitions. Word has length 11 [2024-11-14 05:46:59,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:59,713 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 232 transitions. [2024-11-14 05:46:59,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 232 transitions. [2024-11-14 05:46:59,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 05:46:59,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:59,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:59,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 05:46:59,715 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:46:59,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:46:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1644461900, now seen corresponding path program 1 times [2024-11-14 05:46:59,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:46:59,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025315360] [2024-11-14 05:46:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:59,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:46:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:46:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233011507] [2024-11-14 05:46:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:46:59,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:46:59,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:59,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:46:59,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:46:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:46:59,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:46:59,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:46:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:46:59,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:46:59,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:46:59,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025315360] [2024-11-14 05:46:59,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:46:59,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233011507] [2024-11-14 05:46:59,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233011507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:46:59,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:46:59,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:46:59,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487021338] [2024-11-14 05:46:59,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:46:59,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:46:59,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:46:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:46:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:59,919 INFO L87 Difference]: Start difference. First operand 181 states and 232 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:46:59,952 INFO L93 Difference]: Finished difference Result 181 states and 232 transitions. [2024-11-14 05:46:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:46:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 05:46:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:46:59,954 INFO L225 Difference]: With dead ends: 181 [2024-11-14 05:46:59,954 INFO L226 Difference]: Without dead ends: 179 [2024-11-14 05:46:59,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:46:59,955 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 83 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:46:59,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 95 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:46:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-14 05:46:59,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-14 05:46:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 131 states have (on average 1.6259541984732824) internal successors, (213), 171 states have internal predecessors, (213), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:46:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 225 transitions. [2024-11-14 05:46:59,973 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 225 transitions. Word has length 12 [2024-11-14 05:46:59,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:46:59,973 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 225 transitions. [2024-11-14 05:46:59,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:46:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 225 transitions. [2024-11-14 05:46:59,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:46:59,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:46:59,974 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:46:59,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 05:47:00,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:00,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:00,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash 561288720, now seen corresponding path program 1 times [2024-11-14 05:47:00,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:00,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370945274] [2024-11-14 05:47:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:00,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:47:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233110673] [2024-11-14 05:47:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:00,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:00,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:00,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:00,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:47:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:00,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:47:00,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:00,421 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:00,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:00,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370945274] [2024-11-14 05:47:00,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:47:00,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233110673] [2024-11-14 05:47:00,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233110673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:00,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:00,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:47:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169930743] [2024-11-14 05:47:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:00,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:00,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:00,427 INFO L87 Difference]: Start difference. First operand 179 states and 225 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:00,456 INFO L93 Difference]: Finished difference Result 179 states and 225 transitions. [2024-11-14 05:47:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 05:47:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:00,458 INFO L225 Difference]: With dead ends: 179 [2024-11-14 05:47:00,458 INFO L226 Difference]: Without dead ends: 175 [2024-11-14 05:47:00,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:00,460 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 82 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 95 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 [2024-11-14 05:47:00,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 95 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:47:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-14 05:47:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-14 05:47:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.5813953488372092) internal successors, (204), 167 states have internal predecessors, (204), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:47:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 216 transitions. [2024-11-14 05:47:00,475 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 216 transitions. Word has length 13 [2024-11-14 05:47:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:00,476 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 216 transitions. [2024-11-14 05:47:00,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 216 transitions. [2024-11-14 05:47:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:47:00,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:00,478 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:00,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:47:00,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:00,679 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:00,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash -709510710, now seen corresponding path program 1 times [2024-11-14 05:47:00,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:00,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493468805] [2024-11-14 05:47:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:00,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:47:00,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006654380] [2024-11-14 05:47:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:00,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:00,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:00,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:00,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:47:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:00,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:47:00,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:00,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:00,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:00,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493468805] [2024-11-14 05:47:00,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:47:00,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006654380] [2024-11-14 05:47:00,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006654380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:00,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:00,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:47:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355041951] [2024-11-14 05:47:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:00,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:00,993 INFO L87 Difference]: Start difference. First operand 175 states and 216 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:01,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:01,336 INFO L93 Difference]: Finished difference Result 230 states and 293 transitions. [2024-11-14 05:47:01,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:01,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-14 05:47:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:01,338 INFO L225 Difference]: With dead ends: 230 [2024-11-14 05:47:01,338 INFO L226 Difference]: Without dead ends: 224 [2024-11-14 05:47:01,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:01,339 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 23 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:01,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 102 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:47:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-14 05:47:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 210. [2024-11-14 05:47:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 163 states have (on average 1.5828220858895705) internal successors, (258), 201 states have internal predecessors, (258), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:47:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 272 transitions. [2024-11-14 05:47:01,357 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 272 transitions. Word has length 23 [2024-11-14 05:47:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:01,357 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 272 transitions. [2024-11-14 05:47:01,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 272 transitions. [2024-11-14 05:47:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:47:01,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:01,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:01,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:47:01,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 05:47:01,560 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:01,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:01,560 INFO L85 PathProgramCache]: Analyzing trace with hash -935118100, now seen corresponding path program 1 times [2024-11-14 05:47:01,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:01,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456121021] [2024-11-14 05:47:01,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:01,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:01,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456121021] [2024-11-14 05:47:01,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456121021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:01,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:01,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:01,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100560049] [2024-11-14 05:47:01,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:01,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:47:01,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:01,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:47:01,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:01,692 INFO L87 Difference]: Start difference. First operand 210 states and 272 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:02,689 INFO L93 Difference]: Finished difference Result 285 states and 348 transitions. [2024-11-14 05:47:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:47:02,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-14 05:47:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:02,692 INFO L225 Difference]: With dead ends: 285 [2024-11-14 05:47:02,692 INFO L226 Difference]: Without dead ends: 284 [2024-11-14 05:47:02,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:02,696 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 109 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:02,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 181 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:47:02,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-14 05:47:02,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 220. [2024-11-14 05:47:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 173 states have (on average 1.5780346820809248) internal successors, (273), 211 states have internal predecessors, (273), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:47:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 287 transitions. [2024-11-14 05:47:02,718 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 287 transitions. Word has length 24 [2024-11-14 05:47:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:02,721 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 287 transitions. [2024-11-14 05:47:02,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 287 transitions. [2024-11-14 05:47:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:47:02,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:02,722 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:02,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 05:47:02,722 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:02,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash -519995411, now seen corresponding path program 1 times [2024-11-14 05:47:02,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:02,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602330327] [2024-11-14 05:47:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:47:02,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238624334] [2024-11-14 05:47:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:02,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:02,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:02,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:02,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:47:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:02,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:47:02,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:03,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:03,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602330327] [2024-11-14 05:47:03,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:47:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238624334] [2024-11-14 05:47:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238624334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:03,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:03,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:47:03,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416541707] [2024-11-14 05:47:03,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:03,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:03,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:03,004 INFO L87 Difference]: Start difference. First operand 220 states and 287 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:03,435 INFO L93 Difference]: Finished difference Result 285 states and 384 transitions. [2024-11-14 05:47:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:03,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-14 05:47:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:03,437 INFO L225 Difference]: With dead ends: 285 [2024-11-14 05:47:03,437 INFO L226 Difference]: Without dead ends: 279 [2024-11-14 05:47:03,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:03,438 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:03,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 72 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:47:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-14 05:47:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 262. [2024-11-14 05:47:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 214 states have (on average 1.6168224299065421) internal successors, (346), 252 states have internal predecessors, (346), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:47:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 362 transitions. [2024-11-14 05:47:03,455 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 362 transitions. Word has length 24 [2024-11-14 05:47:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:03,456 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 362 transitions. [2024-11-14 05:47:03,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 362 transitions. [2024-11-14 05:47:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:47:03,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:03,457 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:03,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 05:47:03,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 05:47:03,658 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:03,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1076110078, now seen corresponding path program 1 times [2024-11-14 05:47:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:03,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918919501] [2024-11-14 05:47:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:03,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:03,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918919501] [2024-11-14 05:47:03,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918919501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:03,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:03,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481813491] [2024-11-14 05:47:03,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:03,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:47:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:47:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:03,886 INFO L87 Difference]: Start difference. First operand 262 states and 362 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:05,610 INFO L93 Difference]: Finished difference Result 335 states and 436 transitions. [2024-11-14 05:47:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:47:05,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-14 05:47:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:05,613 INFO L225 Difference]: With dead ends: 335 [2024-11-14 05:47:05,613 INFO L226 Difference]: Without dead ends: 334 [2024-11-14 05:47:05,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:05,614 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 108 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:05,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 184 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:47:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-14 05:47:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 264. [2024-11-14 05:47:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 216 states have (on average 1.6111111111111112) internal successors, (348), 254 states have internal predecessors, (348), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:47:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 364 transitions. [2024-11-14 05:47:05,637 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 364 transitions. Word has length 25 [2024-11-14 05:47:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:05,637 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 364 transitions. [2024-11-14 05:47:05,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 364 transitions. [2024-11-14 05:47:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:47:05,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:05,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:05,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 05:47:05,641 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:05,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:05,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1060011564, now seen corresponding path program 1 times [2024-11-14 05:47:05,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:05,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508487021] [2024-11-14 05:47:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:05,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:05,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508487021] [2024-11-14 05:47:05,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508487021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:05,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:05,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987282559] [2024-11-14 05:47:05,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:05,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:47:05,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:47:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:05,770 INFO L87 Difference]: Start difference. First operand 264 states and 364 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:07,047 INFO L93 Difference]: Finished difference Result 335 states and 434 transitions. [2024-11-14 05:47:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:47:07,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-14 05:47:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:07,050 INFO L225 Difference]: With dead ends: 335 [2024-11-14 05:47:07,050 INFO L226 Difference]: Without dead ends: 334 [2024-11-14 05:47:07,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:07,051 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 92 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:07,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 174 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:47:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-14 05:47:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 273. [2024-11-14 05:47:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 225 states have (on average 1.6088888888888888) internal successors, (362), 263 states have internal predecessors, (362), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:47:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 378 transitions. [2024-11-14 05:47:07,069 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 378 transitions. Word has length 25 [2024-11-14 05:47:07,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:07,070 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 378 transitions. [2024-11-14 05:47:07,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 378 transitions. [2024-11-14 05:47:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:47:07,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:07,071 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:07,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 05:47:07,072 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:07,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1474179948, now seen corresponding path program 1 times [2024-11-14 05:47:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:07,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201373339] [2024-11-14 05:47:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:07,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:07,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201373339] [2024-11-14 05:47:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201373339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:07,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:07,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:47:07,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003140482] [2024-11-14 05:47:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:07,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:47:07,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:47:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:47:07,288 INFO L87 Difference]: Start difference. First operand 273 states and 378 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:08,360 INFO L93 Difference]: Finished difference Result 356 states and 513 transitions. [2024-11-14 05:47:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:47:08,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-14 05:47:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:08,364 INFO L225 Difference]: With dead ends: 356 [2024-11-14 05:47:08,365 INFO L226 Difference]: Without dead ends: 354 [2024-11-14 05:47:08,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:47:08,366 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 130 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:08,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 84 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:47:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-14 05:47:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 279. [2024-11-14 05:47:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 231 states have (on average 1.5974025974025974) internal successors, (369), 269 states have internal predecessors, (369), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:47:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 385 transitions. [2024-11-14 05:47:08,385 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 385 transitions. Word has length 25 [2024-11-14 05:47:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:08,386 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 385 transitions. [2024-11-14 05:47:08,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 385 transitions. [2024-11-14 05:47:08,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 05:47:08,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:08,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:08,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 05:47:08,388 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:08,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:08,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1499379761, now seen corresponding path program 1 times [2024-11-14 05:47:08,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:08,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291271419] [2024-11-14 05:47:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:08,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:08,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:08,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291271419] [2024-11-14 05:47:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291271419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:08,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:08,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:08,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915277867] [2024-11-14 05:47:08,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:08,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:47:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:08,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:47:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:08,655 INFO L87 Difference]: Start difference. First operand 279 states and 385 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:10,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:10,331 INFO L93 Difference]: Finished difference Result 335 states and 430 transitions. [2024-11-14 05:47:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:47:10,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-14 05:47:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:10,333 INFO L225 Difference]: With dead ends: 335 [2024-11-14 05:47:10,333 INFO L226 Difference]: Without dead ends: 334 [2024-11-14 05:47:10,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:10,334 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 102 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:10,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 188 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:47:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-14 05:47:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 281. [2024-11-14 05:47:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 233 states have (on average 1.592274678111588) internal successors, (371), 271 states have internal predecessors, (371), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:47:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 387 transitions. [2024-11-14 05:47:10,353 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 387 transitions. Word has length 26 [2024-11-14 05:47:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:10,353 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 387 transitions. [2024-11-14 05:47:10,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 387 transitions. [2024-11-14 05:47:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 05:47:10,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:10,354 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:10,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 05:47:10,355 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:10,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1545061731, now seen corresponding path program 1 times [2024-11-14 05:47:10,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:10,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122726209] [2024-11-14 05:47:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:10,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:10,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:10,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122726209] [2024-11-14 05:47:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122726209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:10,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:10,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:47:10,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992485026] [2024-11-14 05:47:10,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:10,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:47:10,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:47:10,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:47:10,546 INFO L87 Difference]: Start difference. First operand 281 states and 387 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:11,816 INFO L93 Difference]: Finished difference Result 290 states and 394 transitions. [2024-11-14 05:47:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:47:11,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-14 05:47:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:11,819 INFO L225 Difference]: With dead ends: 290 [2024-11-14 05:47:11,819 INFO L226 Difference]: Without dead ends: 288 [2024-11-14 05:47:11,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:47:11,820 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 101 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:11,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 114 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:47:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-14 05:47:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 281. [2024-11-14 05:47:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 233 states have (on average 1.5793991416309012) internal successors, (368), 271 states have internal predecessors, (368), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:47:11,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 384 transitions. [2024-11-14 05:47:11,837 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 384 transitions. Word has length 26 [2024-11-14 05:47:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:11,838 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 384 transitions. [2024-11-14 05:47:11,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 384 transitions. [2024-11-14 05:47:11,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:47:11,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:11,841 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:11,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 05:47:11,842 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:11,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1904068239, now seen corresponding path program 1 times [2024-11-14 05:47:11,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:11,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211678284] [2024-11-14 05:47:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:11,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:11,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211678284] [2024-11-14 05:47:11,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211678284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:11,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496026694] [2024-11-14 05:47:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:11,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:11,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:11,975 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:11,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:47:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:12,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:47:12,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:12,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496026694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:12,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:47:12,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-14 05:47:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718259105] [2024-11-14 05:47:12,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:12,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:47:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:47:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:47:12,114 INFO L87 Difference]: Start difference. First operand 281 states and 384 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:12,182 INFO L93 Difference]: Finished difference Result 294 states and 397 transitions. [2024-11-14 05:47:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:47:12,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-14 05:47:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:12,186 INFO L225 Difference]: With dead ends: 294 [2024-11-14 05:47:12,187 INFO L226 Difference]: Without dead ends: 293 [2024-11-14 05:47:12,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:47:12,188 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 77 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:12,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 297 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:47:12,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-14 05:47:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 288. [2024-11-14 05:47:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 238 states have (on average 1.546218487394958) internal successors, (368), 277 states have internal predecessors, (368), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:47:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 388 transitions. [2024-11-14 05:47:12,210 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 388 transitions. Word has length 27 [2024-11-14 05:47:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:12,210 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 388 transitions. [2024-11-14 05:47:12,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 388 transitions. [2024-11-14 05:47:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 05:47:12,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:12,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:12,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:47:12,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:12,413 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:12,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash 230621104, now seen corresponding path program 1 times [2024-11-14 05:47:12,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:12,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498463724] [2024-11-14 05:47:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:12,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:47:12,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127715852] [2024-11-14 05:47:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:12,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:12,434 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:12,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:47:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:12,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:47:12,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:12,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:12,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:12,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498463724] [2024-11-14 05:47:12,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:47:12,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127715852] [2024-11-14 05:47:12,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127715852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:12,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:12,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:47:12,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757946275] [2024-11-14 05:47:12,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:12,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:47:12,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:47:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:47:12,713 INFO L87 Difference]: Start difference. First operand 288 states and 388 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:13,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:13,359 INFO L93 Difference]: Finished difference Result 332 states and 437 transitions. [2024-11-14 05:47:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:47:13,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-14 05:47:13,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:13,363 INFO L225 Difference]: With dead ends: 332 [2024-11-14 05:47:13,363 INFO L226 Difference]: Without dead ends: 322 [2024-11-14 05:47:13,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:47:13,366 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 105 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:13,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 129 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:47:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-14 05:47:13,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 280. [2024-11-14 05:47:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 230 states have (on average 1.508695652173913) internal successors, (347), 269 states have internal predecessors, (347), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:47:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 367 transitions. [2024-11-14 05:47:13,385 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 367 transitions. Word has length 29 [2024-11-14 05:47:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:13,385 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 367 transitions. [2024-11-14 05:47:13,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 367 transitions. [2024-11-14 05:47:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 05:47:13,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:13,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:13,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 05:47:13,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:13,590 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:13,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:13,590 INFO L85 PathProgramCache]: Analyzing trace with hash 153511249, now seen corresponding path program 1 times [2024-11-14 05:47:13,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:13,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241987164] [2024-11-14 05:47:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:47:13,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942241951] [2024-11-14 05:47:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:13,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:13,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:47:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:13,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:47:13,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:14,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:17,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:17,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241987164] [2024-11-14 05:47:17,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:47:17,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942241951] [2024-11-14 05:47:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942241951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:17,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1047848765] [2024-11-14 05:47:17,731 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 05:47:17,732 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:17,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:17,741 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:17,741 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:47:23,794 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2024-11-14 05:47:24,010 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:47:49,983 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10598#(exists ((|v_ULTIMATE.start_main_~b~0#1_91| Int) (|v_ULTIMATE.start_main_~a~0#1_91| Int)) (and (exists ((|v_ULTIMATE.start_main_#t~post6#1_29| Int)) (and (<= 1 |#StackHeapBarrier|) (= (+ |v_ULTIMATE.start_main_#t~post6#1_29| 1) ~counter~0) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |v_ULTIMATE.start_main_#t~post6#1_29| 4) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))) (<= (+ (* |v_ULTIMATE.start_main_~b~0#1_91| |v_ULTIMATE.start_main_~a~0#1_91|) 9223372036854775809) 0)))' at error location [2024-11-14 05:47:49,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:47:49,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:47:49,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2024-11-14 05:47:49,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887021304] [2024-11-14 05:47:49,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:47:49,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:47:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:47:49,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=763, Unknown=7, NotChecked=0, Total=930 [2024-11-14 05:47:49,987 INFO L87 Difference]: Start difference. First operand 280 states and 367 transitions. Second operand has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:47:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:55,274 INFO L93 Difference]: Finished difference Result 568 states and 793 transitions. [2024-11-14 05:47:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:47:55,274 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-14 05:47:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:55,277 INFO L225 Difference]: With dead ends: 568 [2024-11-14 05:47:55,277 INFO L226 Difference]: Without dead ends: 543 [2024-11-14 05:47:55,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=330, Invalid=1469, Unknown=7, NotChecked=0, Total=1806 [2024-11-14 05:47:55,279 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 385 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:55,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 117 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-14 05:47:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-14 05:47:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 349. [2024-11-14 05:47:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 299 states have (on average 1.4816053511705685) internal successors, (443), 336 states have internal predecessors, (443), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 05:47:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 465 transitions. [2024-11-14 05:47:55,313 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 465 transitions. Word has length 29 [2024-11-14 05:47:55,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:55,314 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 465 transitions. [2024-11-14 05:47:55,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:47:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 465 transitions. [2024-11-14 05:47:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:47:55,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:55,315 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:55,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 05:47:55,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:55,519 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:55,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1440680223, now seen corresponding path program 1 times [2024-11-14 05:47:55,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:55,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053242888] [2024-11-14 05:47:55,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:55,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:47:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112907104] [2024-11-14 05:47:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:55,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:55,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:55,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 05:47:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:55,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:47:55,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:55,800 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:55,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053242888] [2024-11-14 05:47:55,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:47:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112907104] [2024-11-14 05:47:55,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112907104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:55,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:55,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:47:55,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767047549] [2024-11-14 05:47:55,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:55,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:47:55,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:55,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:47:55,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:47:55,803 INFO L87 Difference]: Start difference. First operand 349 states and 465 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:56,472 INFO L93 Difference]: Finished difference Result 390 states and 513 transitions. [2024-11-14 05:47:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:47:56,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-11-14 05:47:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:56,475 INFO L225 Difference]: With dead ends: 390 [2024-11-14 05:47:56,475 INFO L226 Difference]: Without dead ends: 385 [2024-11-14 05:47:56,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:47:56,476 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 71 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:56,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 103 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:47:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-14 05:47:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 341. [2024-11-14 05:47:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 291 states have (on average 1.4673539518900343) internal successors, (427), 328 states have internal predecessors, (427), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 05:47:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 449 transitions. [2024-11-14 05:47:56,509 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 449 transitions. Word has length 30 [2024-11-14 05:47:56,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:56,509 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 449 transitions. [2024-11-14 05:47:56,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:47:56,509 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 449 transitions. [2024-11-14 05:47:56,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:47:56,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:56,510 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:56,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 05:47:56,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:56,711 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:47:56,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:56,711 INFO L85 PathProgramCache]: Analyzing trace with hash 463881479, now seen corresponding path program 1 times [2024-11-14 05:47:56,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:56,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006074632] [2024-11-14 05:47:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:56,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:47:56,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806001518] [2024-11-14 05:47:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:56,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:56,740 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:56,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 05:47:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:56,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:47:56,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:57,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:59,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:59,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006074632] [2024-11-14 05:47:59,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:47:59,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806001518] [2024-11-14 05:47:59,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806001518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:59,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2111559336] [2024-11-14 05:47:59,905 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 05:47:59,905 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:59,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:59,906 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:59,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:48:02,635 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2024-11-14 05:48:02,781 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:48:24,173 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12697#(exists ((|v_ULTIMATE.start_main_~a~0#1_99| Int) (|v_ULTIMATE.start_main_~b~0#1_99| Int)) (and (exists ((|v_ULTIMATE.start_main_#t~post6#1_36| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_main_#t~post6#1_36| 4) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= ~counter~0 (+ |v_ULTIMATE.start_main_#t~post6#1_36| 1)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))) (<= 9223372036854775808 (* |v_ULTIMATE.start_main_~b~0#1_99| |v_ULTIMATE.start_main_~a~0#1_99|))))' at error location [2024-11-14 05:48:24,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:48:24,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:48:24,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2024-11-14 05:48:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622761513] [2024-11-14 05:48:24,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:48:24,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:48:24,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:48:24,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:48:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=769, Unknown=5, NotChecked=0, Total=930 [2024-11-14 05:48:24,179 INFO L87 Difference]: Start difference. First operand 341 states and 449 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:48:26,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:48:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:35,428 INFO L93 Difference]: Finished difference Result 554 states and 747 transitions. [2024-11-14 05:48:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 05:48:35,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-14 05:48:35,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:35,432 INFO L225 Difference]: With dead ends: 554 [2024-11-14 05:48:35,432 INFO L226 Difference]: Without dead ends: 520 [2024-11-14 05:48:35,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=294, Invalid=1341, Unknown=5, NotChecked=0, Total=1640 [2024-11-14 05:48:35,434 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 334 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:35,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 142 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 695 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2024-11-14 05:48:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-14 05:48:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 373. [2024-11-14 05:48:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 324 states have (on average 1.4104938271604939) internal successors, (457), 360 states have internal predecessors, (457), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:48:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2024-11-14 05:48:35,479 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 30 [2024-11-14 05:48:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:35,480 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2024-11-14 05:48:35,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:48:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2024-11-14 05:48:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 05:48:35,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:35,481 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:35,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:35,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:35,682 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:48:35,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1711413806, now seen corresponding path program 1 times [2024-11-14 05:48:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:48:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841007983] [2024-11-14 05:48:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:48:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:35,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:48:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841007983] [2024-11-14 05:48:35,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841007983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:35,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:35,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:48:35,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014392737] [2024-11-14 05:48:35,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:35,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:48:35,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:48:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:48:35,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:35,770 INFO L87 Difference]: Start difference. First operand 373 states and 477 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:36,561 INFO L93 Difference]: Finished difference Result 412 states and 511 transitions. [2024-11-14 05:48:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:48:36,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-14 05:48:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:36,567 INFO L225 Difference]: With dead ends: 412 [2024-11-14 05:48:36,568 INFO L226 Difference]: Without dead ends: 411 [2024-11-14 05:48:36,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:36,569 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:36,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 148 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 05:48:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-14 05:48:36,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 394. [2024-11-14 05:48:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 345 states have (on average 1.4057971014492754) internal successors, (485), 381 states have internal predecessors, (485), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:48:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 505 transitions. [2024-11-14 05:48:36,610 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 505 transitions. Word has length 31 [2024-11-14 05:48:36,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:36,611 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 505 transitions. [2024-11-14 05:48:36,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 505 transitions. [2024-11-14 05:48:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 05:48:36,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:36,612 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:36,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-14 05:48:36,612 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:48:36,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1495424019, now seen corresponding path program 1 times [2024-11-14 05:48:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:48:36,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163848791] [2024-11-14 05:48:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:48:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:48:36,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38589037] [2024-11-14 05:48:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:36,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:36,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:36,632 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:36,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 05:48:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:36,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:48:36,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:37,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:42,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:48:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163848791] [2024-11-14 05:48:42,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:48:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38589037] [2024-11-14 05:48:42,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38589037] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:48:42,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:48:42,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-14 05:48:42,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747042153] [2024-11-14 05:48:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:42,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:48:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:48:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:48:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:48:42,189 INFO L87 Difference]: Start difference. First operand 394 states and 505 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:46,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 05:48:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:47,094 INFO L93 Difference]: Finished difference Result 409 states and 521 transitions. [2024-11-14 05:48:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:48:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-14 05:48:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:47,097 INFO L225 Difference]: With dead ends: 409 [2024-11-14 05:48:47,097 INFO L226 Difference]: Without dead ends: 408 [2024-11-14 05:48:47,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:48:47,097 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 127 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:47,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 74 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-14 05:48:47,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-14 05:48:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 401. [2024-11-14 05:48:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 352 states have (on average 1.3920454545454546) internal successors, (490), 388 states have internal predecessors, (490), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:48:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 510 transitions. [2024-11-14 05:48:47,138 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 510 transitions. Word has length 31 [2024-11-14 05:48:47,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:47,138 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 510 transitions. [2024-11-14 05:48:47,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 510 transitions. [2024-11-14 05:48:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:48:47,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:47,139 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:47,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:47,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-14 05:48:47,339 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:48:47,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash 987820243, now seen corresponding path program 1 times [2024-11-14 05:48:47,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:48:47,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140591154] [2024-11-14 05:48:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:48:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:48:47,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953543316] [2024-11-14 05:48:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:47,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:47,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:47,359 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:47,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 05:48:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:47,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:48:47,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:47,640 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:47,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:48:47,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140591154] [2024-11-14 05:48:47,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:48:47,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953543316] [2024-11-14 05:48:47,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953543316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:47,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:47,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:48:47,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589562310] [2024-11-14 05:48:47,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:47,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:48:47,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:48:47,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:48:47,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:48:47,643 INFO L87 Difference]: Start difference. First operand 401 states and 510 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:48,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:48,026 INFO L93 Difference]: Finished difference Result 405 states and 512 transitions. [2024-11-14 05:48:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:48:48,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-14 05:48:48,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:48,028 INFO L225 Difference]: With dead ends: 405 [2024-11-14 05:48:48,028 INFO L226 Difference]: Without dead ends: 403 [2024-11-14 05:48:48,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:48:48,029 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 35 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:48,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 115 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:48:48,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-14 05:48:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2024-11-14 05:48:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 352 states have (on average 1.3863636363636365) internal successors, (488), 388 states have internal predecessors, (488), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:48:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 508 transitions. [2024-11-14 05:48:48,058 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 508 transitions. Word has length 32 [2024-11-14 05:48:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:48,058 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 508 transitions. [2024-11-14 05:48:48,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 508 transitions. [2024-11-14 05:48:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:48:48,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:48,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:48,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-14 05:48:48,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 05:48:48,260 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:48:48,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1514220285, now seen corresponding path program 1 times [2024-11-14 05:48:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:48:48,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997398573] [2024-11-14 05:48:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:48:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:48,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:48:48,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997398573] [2024-11-14 05:48:48,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997398573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:48,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:48,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:48:48,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947308525] [2024-11-14 05:48:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:48,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:48:48,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:48:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:48:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:48,361 INFO L87 Difference]: Start difference. First operand 401 states and 508 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:49,400 INFO L93 Difference]: Finished difference Result 418 states and 512 transitions. [2024-11-14 05:48:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:48:49,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-14 05:48:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:49,402 INFO L225 Difference]: With dead ends: 418 [2024-11-14 05:48:49,402 INFO L226 Difference]: Without dead ends: 417 [2024-11-14 05:48:49,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:48:49,403 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 59 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:49,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 157 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:48:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-14 05:48:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 403. [2024-11-14 05:48:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 354 states have (on average 1.384180790960452) internal successors, (490), 390 states have internal predecessors, (490), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:48:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 510 transitions. [2024-11-14 05:48:49,444 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 510 transitions. Word has length 32 [2024-11-14 05:48:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:49,444 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 510 transitions. [2024-11-14 05:48:49,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 510 transitions. [2024-11-14 05:48:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:48:49,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:49,445 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:49,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-14 05:48:49,445 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:48:49,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:49,446 INFO L85 PathProgramCache]: Analyzing trace with hash -886495607, now seen corresponding path program 1 times [2024-11-14 05:48:49,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:48:49,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42337427] [2024-11-14 05:48:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:49,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:48:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:48:49,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684994181] [2024-11-14 05:48:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:49,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:49,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:49,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:49,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 05:48:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:49,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:48:49,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:50,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:52,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:48:52,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42337427] [2024-11-14 05:48:52,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:48:52,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684994181] [2024-11-14 05:48:52,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684994181] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:48:52,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:48:52,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-14 05:48:52,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817494537] [2024-11-14 05:48:52,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:52,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:48:52,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:48:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:48:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:48:52,251 INFO L87 Difference]: Start difference. First operand 403 states and 510 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:56,110 INFO L93 Difference]: Finished difference Result 413 states and 520 transitions. [2024-11-14 05:48:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:48:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-14 05:48:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:56,111 INFO L225 Difference]: With dead ends: 413 [2024-11-14 05:48:56,111 INFO L226 Difference]: Without dead ends: 412 [2024-11-14 05:48:56,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:48:56,112 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 111 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:48:56,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 76 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-14 05:48:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-14 05:48:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 404. [2024-11-14 05:48:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 355 states have (on average 1.3774647887323943) internal successors, (489), 391 states have internal predecessors, (489), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:48:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 509 transitions. [2024-11-14 05:48:56,149 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 509 transitions. Word has length 32 [2024-11-14 05:48:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:56,150 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 509 transitions. [2024-11-14 05:48:56,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:48:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 509 transitions. [2024-11-14 05:48:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:48:56,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:56,150 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:56,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 05:48:56,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 05:48:56,355 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:48:56,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1994976994, now seen corresponding path program 1 times [2024-11-14 05:48:56,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:48:56,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033168691] [2024-11-14 05:48:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:56,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:48:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:48:56,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599846300] [2024-11-14 05:48:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:56,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:48:56,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:56,370 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:48:56,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 05:48:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:56,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:48:56,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:57,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:48:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:58,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:48:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033168691] [2024-11-14 05:48:58,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:48:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599846300] [2024-11-14 05:48:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599846300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:48:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [60694691] [2024-11-14 05:48:58,325 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 05:48:58,325 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:48:58,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:48:58,326 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:48:58,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:49:00,821 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2024-11-14 05:49:00,869 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:49:07,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [60694691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:07,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:49:07,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7, 7] total 23 [2024-11-14 05:49:07,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144320624] [2024-11-14 05:49:07,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:07,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:49:07,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:49:07,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:49:07,084 INFO L87 Difference]: Start difference. First operand 404 states and 509 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:49:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:08,668 INFO L93 Difference]: Finished difference Result 417 states and 515 transitions. [2024-11-14 05:49:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:49:08,669 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2024-11-14 05:49:08,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:08,671 INFO L225 Difference]: With dead ends: 417 [2024-11-14 05:49:08,671 INFO L226 Difference]: Without dead ends: 411 [2024-11-14 05:49:08,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 13 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:49:08,673 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 20 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:08,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 136 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:49:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-14 05:49:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 400. [2024-11-14 05:49:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 350 states have (on average 1.3657142857142857) internal successors, (478), 386 states have internal predecessors, (478), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:49:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 498 transitions. [2024-11-14 05:49:08,720 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 498 transitions. Word has length 33 [2024-11-14 05:49:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:08,720 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 498 transitions. [2024-11-14 05:49:08,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:49:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 498 transitions. [2024-11-14 05:49:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 05:49:08,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:08,721 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:08,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-14 05:49:08,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:08,925 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:49:08,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash 107483029, now seen corresponding path program 1 times [2024-11-14 05:49:08,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:49:08,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107752911] [2024-11-14 05:49:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:08,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:49:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:49:08,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808262115] [2024-11-14 05:49:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:08,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:08,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:08,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:08,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 05:49:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:09,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:49:09,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:09,343 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:09,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:49:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107752911] [2024-11-14 05:49:09,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:49:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808262115] [2024-11-14 05:49:09,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808262115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:09,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:09,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:49:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549128449] [2024-11-14 05:49:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:09,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:49:09,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:49:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:49:09,344 INFO L87 Difference]: Start difference. First operand 400 states and 498 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:49:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:09,867 INFO L93 Difference]: Finished difference Result 406 states and 502 transitions. [2024-11-14 05:49:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:49:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-14 05:49:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:09,869 INFO L225 Difference]: With dead ends: 406 [2024-11-14 05:49:09,869 INFO L226 Difference]: Without dead ends: 404 [2024-11-14 05:49:09,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:49:09,870 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 34 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:09,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 125 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:49:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-14 05:49:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 400. [2024-11-14 05:49:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 350 states have (on average 1.36) internal successors, (476), 386 states have internal predecessors, (476), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:49:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 496 transitions. [2024-11-14 05:49:09,917 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 496 transitions. Word has length 34 [2024-11-14 05:49:09,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:09,918 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 496 transitions. [2024-11-14 05:49:09,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:49:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 496 transitions. [2024-11-14 05:49:09,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:49:09,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:09,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:09,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-14 05:49:10,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:10,119 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:49:10,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash -962993333, now seen corresponding path program 1 times [2024-11-14 05:49:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:49:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900152685] [2024-11-14 05:49:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:49:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:49:10,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782867700] [2024-11-14 05:49:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:10,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:10,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:10,146 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:10,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 05:49:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:10,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:49:10,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:10,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:49:10,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:49:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900152685] [2024-11-14 05:49:10,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:49:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782867700] [2024-11-14 05:49:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782867700] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:49:10,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:49:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-14 05:49:10,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566163844] [2024-11-14 05:49:10,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:10,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:49:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:10,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:49:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:49:10,893 INFO L87 Difference]: Start difference. First operand 400 states and 496 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:49:13,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:13,084 INFO L93 Difference]: Finished difference Result 428 states and 539 transitions. [2024-11-14 05:49:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:49:13,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-11-14 05:49:13,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:13,087 INFO L225 Difference]: With dead ends: 428 [2024-11-14 05:49:13,087 INFO L226 Difference]: Without dead ends: 427 [2024-11-14 05:49:13,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:49:13,088 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 42 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:13,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 87 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 05:49:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-14 05:49:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 420. [2024-11-14 05:49:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 370 states have (on average 1.3675675675675676) internal successors, (506), 406 states have internal predecessors, (506), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:49:13,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 526 transitions. [2024-11-14 05:49:13,136 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 526 transitions. Word has length 35 [2024-11-14 05:49:13,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:13,136 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 526 transitions. [2024-11-14 05:49:13,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:49:13,137 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 526 transitions. [2024-11-14 05:49:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 05:49:13,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:13,138 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:13,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-14 05:49:13,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-14 05:49:13,342 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:49:13,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1060113620, now seen corresponding path program 1 times [2024-11-14 05:49:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:49:13,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572435509] [2024-11-14 05:49:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:13,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:49:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:49:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682833964] [2024-11-14 05:49:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:13,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:13,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:13,361 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:13,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 05:49:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:13,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:49:13,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:13,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:14,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:49:14,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572435509] [2024-11-14 05:49:14,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:49:14,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682833964] [2024-11-14 05:49:14,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682833964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:14,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1023272554] [2024-11-14 05:49:14,043 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-14 05:49:14,043 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:49:14,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:49:14,043 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:49:14,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:49:15,384 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 54 for LOIs [2024-11-14 05:49:15,402 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:49:27,710 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21981#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~b~0#1_118| Int) (|v_ULTIMATE.start_main_~a~0#1_116| Int)) (and (<= (+ 9223372036854775809 (* |v_ULTIMATE.start_main_~a~0#1_116| |v_ULTIMATE.start_main_~b~0#1_118|)) 0) (<= 0 (+ 9223372039002259455 |v_ULTIMATE.start_main_~b~0#1_118|)) (<= |v_ULTIMATE.start_main_~b~0#1_118| 2147483647) (<= |v_ULTIMATE.start_main_~a~0#1_116| 2147483647) (<= 0 (+ 9223372039002259455 |v_ULTIMATE.start_main_~a~0#1_116|)))))' at error location [2024-11-14 05:49:27,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:49:27,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:49:27,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-11-14 05:49:27,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055069175] [2024-11-14 05:49:27,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:49:27,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:49:27,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:27,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:49:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=812, Unknown=1, NotChecked=0, Total=992 [2024-11-14 05:49:27,712 INFO L87 Difference]: Start difference. First operand 420 states and 526 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:33,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:33,339 INFO L93 Difference]: Finished difference Result 525 states and 665 transitions. [2024-11-14 05:49:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 05:49:33,340 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-11-14 05:49:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:33,341 INFO L225 Difference]: With dead ends: 525 [2024-11-14 05:49:33,342 INFO L226 Difference]: Without dead ends: 514 [2024-11-14 05:49:33,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 71 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=274, Invalid=1285, Unknown=1, NotChecked=0, Total=1560 [2024-11-14 05:49:33,343 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 229 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:33,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 152 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-14 05:49:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-14 05:49:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 474. [2024-11-14 05:49:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 422 states have (on average 1.3625592417061612) internal successors, (575), 458 states have internal predecessors, (575), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 05:49:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 599 transitions. [2024-11-14 05:49:33,405 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 599 transitions. Word has length 37 [2024-11-14 05:49:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:33,405 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 599 transitions. [2024-11-14 05:49:33,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 599 transitions. [2024-11-14 05:49:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 05:49:33,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:33,407 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:33,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-14 05:49:33,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-14 05:49:33,608 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:49:33,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:33,609 INFO L85 PathProgramCache]: Analyzing trace with hash -861937874, now seen corresponding path program 1 times [2024-11-14 05:49:33,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:49:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390092801] [2024-11-14 05:49:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:33,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:49:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:49:33,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767034099] [2024-11-14 05:49:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:33,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:33,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:33,632 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:33,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 05:49:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:33,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:49:33,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:34,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:36,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:49:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390092801] [2024-11-14 05:49:36,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:49:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767034099] [2024-11-14 05:49:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767034099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [567100030] [2024-11-14 05:49:36,873 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-14 05:49:36,873 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:49:36,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:49:36,873 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:49:36,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:49:37,994 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 54 for LOIs [2024-11-14 05:49:38,003 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:49:48,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [567100030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:48,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:49:48,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [5, 5] total 30 [2024-11-14 05:49:48,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249677761] [2024-11-14 05:49:48,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:48,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 05:49:48,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:48,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 05:49:48,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2024-11-14 05:49:48,376 INFO L87 Difference]: Start difference. First operand 474 states and 599 transitions. Second operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:50:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:01,054 INFO L93 Difference]: Finished difference Result 606 states and 758 transitions. [2024-11-14 05:50:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-14 05:50:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-14 05:50:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:01,055 INFO L225 Difference]: With dead ends: 606 [2024-11-14 05:50:01,055 INFO L226 Difference]: Without dead ends: 600 [2024-11-14 05:50:01,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=464, Invalid=1792, Unknown=0, NotChecked=0, Total=2256 [2024-11-14 05:50:01,057 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 150 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:01,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 124 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-14 05:50:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-14 05:50:01,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 529. [2024-11-14 05:50:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 471 states have (on average 1.3524416135881103) internal successors, (637), 508 states have internal predecessors, (637), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 05:50:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 667 transitions. [2024-11-14 05:50:01,120 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 667 transitions. Word has length 39 [2024-11-14 05:50:01,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:01,120 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 667 transitions. [2024-11-14 05:50:01,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:50:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 667 transitions. [2024-11-14 05:50:01,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:50:01,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:01,120 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:01,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 05:50:01,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:01,321 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:50:01,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:01,322 INFO L85 PathProgramCache]: Analyzing trace with hash 606393136, now seen corresponding path program 1 times [2024-11-14 05:50:01,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:01,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125765130] [2024-11-14 05:50:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:01,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:50:01,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531253912] [2024-11-14 05:50:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:01,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:01,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:01,337 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:01,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 05:50:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:01,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:50:01,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:02,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:04,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:04,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125765130] [2024-11-14 05:50:04,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:50:04,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531253912] [2024-11-14 05:50:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531253912] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:04,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:50:04,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-14 05:50:04,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880389771] [2024-11-14 05:50:04,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:50:04,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:50:04,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:04,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:50:04,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:50:04,102 INFO L87 Difference]: Start difference. First operand 529 states and 667 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:50:09,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:09,833 INFO L93 Difference]: Finished difference Result 563 states and 709 transitions. [2024-11-14 05:50:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:50:09,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2024-11-14 05:50:09,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:09,835 INFO L225 Difference]: With dead ends: 563 [2024-11-14 05:50:09,835 INFO L226 Difference]: Without dead ends: 562 [2024-11-14 05:50:09,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:50:09,835 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 138 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:09,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 106 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-14 05:50:09,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-14 05:50:09,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 547. [2024-11-14 05:50:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 489 states have (on average 1.343558282208589) internal successors, (657), 526 states have internal predecessors, (657), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 05:50:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 687 transitions. [2024-11-14 05:50:09,909 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 687 transitions. Word has length 41 [2024-11-14 05:50:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:09,909 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 687 transitions. [2024-11-14 05:50:09,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:50:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 687 transitions. [2024-11-14 05:50:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 05:50:09,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:09,910 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:09,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 05:50:10,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:10,114 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:50:10,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1618318096, now seen corresponding path program 1 times [2024-11-14 05:50:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:10,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362815081] [2024-11-14 05:50:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:50:10,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476352495] [2024-11-14 05:50:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:10,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:10,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:10,138 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:10,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 05:50:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:10,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:50:10,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:10,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:50:10,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:10,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362815081] [2024-11-14 05:50:10,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:50:10,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476352495] [2024-11-14 05:50:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476352495] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:10,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:50:10,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-14 05:50:10,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355203983] [2024-11-14 05:50:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:50:10,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:50:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:50:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:50:10,877 INFO L87 Difference]: Start difference. First operand 547 states and 687 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:50:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:13,372 INFO L93 Difference]: Finished difference Result 556 states and 697 transitions. [2024-11-14 05:50:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:50:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-11-14 05:50:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:13,374 INFO L225 Difference]: With dead ends: 556 [2024-11-14 05:50:13,374 INFO L226 Difference]: Without dead ends: 555 [2024-11-14 05:50:13,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:50:13,375 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 68 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:13,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 63 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-14 05:50:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-14 05:50:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 547. [2024-11-14 05:50:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 489 states have (on average 1.3394683026584866) internal successors, (655), 526 states have internal predecessors, (655), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 05:50:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 685 transitions. [2024-11-14 05:50:13,428 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 685 transitions. Word has length 42 [2024-11-14 05:50:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:13,428 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 685 transitions. [2024-11-14 05:50:13,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:50:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 685 transitions. [2024-11-14 05:50:13,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:50:13,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:13,429 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:13,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-14 05:50:13,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-14 05:50:13,629 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:50:13,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:13,630 INFO L85 PathProgramCache]: Analyzing trace with hash -730162898, now seen corresponding path program 1 times [2024-11-14 05:50:13,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:13,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477384518] [2024-11-14 05:50:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:13,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:13,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477384518] [2024-11-14 05:50:13,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477384518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:50:13,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:50:13,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:50:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930616257] [2024-11-14 05:50:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:50:13,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:50:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:50:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:50:13,731 INFO L87 Difference]: Start difference. First operand 547 states and 685 transitions. Second operand has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:14,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:14,000 INFO L93 Difference]: Finished difference Result 547 states and 685 transitions. [2024-11-14 05:50:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:50:14,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-14 05:50:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:14,002 INFO L225 Difference]: With dead ends: 547 [2024-11-14 05:50:14,002 INFO L226 Difference]: Without dead ends: 544 [2024-11-14 05:50:14,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:50:14,003 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 43 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:14,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 39 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:50:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-14 05:50:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2024-11-14 05:50:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 489 states have (on average 1.3210633946830266) internal successors, (646), 523 states have internal predecessors, (646), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 05:50:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 676 transitions. [2024-11-14 05:50:14,048 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 676 transitions. Word has length 45 [2024-11-14 05:50:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:14,048 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 676 transitions. [2024-11-14 05:50:14,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 676 transitions. [2024-11-14 05:50:14,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 05:50:14,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:14,049 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:14,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-14 05:50:14,050 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:50:14,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1173604295, now seen corresponding path program 1 times [2024-11-14 05:50:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:14,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027823942] [2024-11-14 05:50:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:14,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:50:14,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651821588] [2024-11-14 05:50:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:14,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:14,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:14,073 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:14,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-14 05:50:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:14,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:50:14,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:16,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:50:18,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:18,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027823942] [2024-11-14 05:50:18,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:50:18,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651821588] [2024-11-14 05:50:18,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651821588] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:18,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:50:18,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-14 05:50:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365173373] [2024-11-14 05:50:18,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:50:18,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:50:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:18,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:50:18,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:50:18,099 INFO L87 Difference]: Start difference. First operand 544 states and 676 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:20,726 INFO L93 Difference]: Finished difference Result 618 states and 771 transitions. [2024-11-14 05:50:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:50:20,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-14 05:50:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:20,729 INFO L225 Difference]: With dead ends: 618 [2024-11-14 05:50:20,729 INFO L226 Difference]: Without dead ends: 617 [2024-11-14 05:50:20,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:50:20,730 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 58 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:20,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 118 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-14 05:50:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-14 05:50:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 543. [2024-11-14 05:50:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 489 states have (on average 1.3149284253578732) internal successors, (643), 522 states have internal predecessors, (643), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 05:50:20,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 673 transitions. [2024-11-14 05:50:20,788 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 673 transitions. Word has length 46 [2024-11-14 05:50:20,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:20,788 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 673 transitions. [2024-11-14 05:50:20,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 673 transitions. [2024-11-14 05:50:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 05:50:20,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:20,789 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:20,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-14 05:50:20,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-14 05:50:20,990 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:50:20,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1160213241, now seen corresponding path program 1 times [2024-11-14 05:50:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:20,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210132716] [2024-11-14 05:50:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:50:21,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185884678] [2024-11-14 05:50:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:21,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:21,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:21,018 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:21,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 05:50:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:21,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:50:21,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:25,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:50:26,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:26,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210132716] [2024-11-14 05:50:26,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:50:26,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185884678] [2024-11-14 05:50:26,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185884678] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:26,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:50:26,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-14 05:50:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577388896] [2024-11-14 05:50:26,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:50:26,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:50:26,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:50:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:50:26,243 INFO L87 Difference]: Start difference. First operand 543 states and 673 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:28,118 INFO L93 Difference]: Finished difference Result 591 states and 744 transitions. [2024-11-14 05:50:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:50:28,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-14 05:50:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:28,121 INFO L225 Difference]: With dead ends: 591 [2024-11-14 05:50:28,121 INFO L226 Difference]: Without dead ends: 590 [2024-11-14 05:50:28,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:50:28,122 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 68 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:28,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 110 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:50:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-14 05:50:28,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 542. [2024-11-14 05:50:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 489 states have (on average 1.3108384458077709) internal successors, (641), 521 states have internal predecessors, (641), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 05:50:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 671 transitions. [2024-11-14 05:50:28,189 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 671 transitions. Word has length 46 [2024-11-14 05:50:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:28,189 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 671 transitions. [2024-11-14 05:50:28,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 671 transitions. [2024-11-14 05:50:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 05:50:28,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:28,190 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:28,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-14 05:50:28,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-14 05:50:28,390 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:50:28,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1606871984, now seen corresponding path program 1 times [2024-11-14 05:50:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280309194] [2024-11-14 05:50:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:50:28,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787363414] [2024-11-14 05:50:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:28,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:28,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:28,412 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:28,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 05:50:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:28,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:50:28,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:32,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:50:34,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:34,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280309194] [2024-11-14 05:50:34,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:50:34,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787363414] [2024-11-14 05:50:34,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787363414] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:34,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:50:34,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-14 05:50:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051097306] [2024-11-14 05:50:34,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:50:34,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:50:34,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:34,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:50:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:50:34,649 INFO L87 Difference]: Start difference. First operand 542 states and 671 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:37,469 INFO L93 Difference]: Finished difference Result 590 states and 742 transitions. [2024-11-14 05:50:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:50:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-11-14 05:50:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:37,471 INFO L225 Difference]: With dead ends: 590 [2024-11-14 05:50:37,471 INFO L226 Difference]: Without dead ends: 589 [2024-11-14 05:50:37,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:50:37,472 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 65 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:37,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 110 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 05:50:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-14 05:50:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 541. [2024-11-14 05:50:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 489 states have (on average 1.3067484662576687) internal successors, (639), 520 states have internal predecessors, (639), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 05:50:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 669 transitions. [2024-11-14 05:50:37,515 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 669 transitions. Word has length 47 [2024-11-14 05:50:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:37,515 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 669 transitions. [2024-11-14 05:50:37,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 669 transitions. [2024-11-14 05:50:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 05:50:37,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:37,516 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 05:50:37,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 05:50:37,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-14 05:50:37,717 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:50:37,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2005896159, now seen corresponding path program 1 times [2024-11-14 05:50:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:37,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062552795] [2024-11-14 05:50:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:37,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:37,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062552795] [2024-11-14 05:50:37,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062552795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:37,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767079867] [2024-11-14 05:50:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:37,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:37,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:37,816 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:37,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-14 05:50:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:37,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:50:37,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:37,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:38,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767079867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:38,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2103930075] [2024-11-14 05:50:38,050 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 05:50:38,050 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:38,050 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:38,050 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:38,050 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:40,726 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2024-11-14 05:50:40,827 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:51:22,354 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33603#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (exists ((|v_ULTIMATE.start_main_~a~0#1_149| Int)) (and (<= 0 (+ 9223372036854775808 (div |v_ULTIMATE.start_main_~a~0#1_149| 2))) (= (mod |v_ULTIMATE.start_main_~a~0#1_149| 2) 0) (<= (div |v_ULTIMATE.start_main_~a~0#1_149| 2) 9223372036854775807) (= |ULTIMATE.start_main_~a~0#1| (div |v_ULTIMATE.start_main_~a~0#1_149| 2)))) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~b~0#1_152| Int)) (and (<= (div |v_ULTIMATE.start_main_~b~0#1_152| 2) 9223372036854775807) (= |ULTIMATE.start_main_~b~0#1| (div |v_ULTIMATE.start_main_~b~0#1_152| 2)) (<= 0 (+ 9223372036854775808 (div |v_ULTIMATE.start_main_~b~0#1_152| 2))) (= (mod |v_ULTIMATE.start_main_~b~0#1_152| 2) 0))))' at error location [2024-11-14 05:51:22,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:51:22,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:51:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-14 05:51:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477501433] [2024-11-14 05:51:22,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:51:22,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:51:22,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:51:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:51:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=489, Unknown=7, NotChecked=0, Total=600 [2024-11-14 05:51:22,357 INFO L87 Difference]: Start difference. First operand 541 states and 669 transitions. Second operand has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:51:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:22,996 INFO L93 Difference]: Finished difference Result 1233 states and 1582 transitions. [2024-11-14 05:51:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:51:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 47 [2024-11-14 05:51:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:23,000 INFO L225 Difference]: With dead ends: 1233 [2024-11-14 05:51:23,000 INFO L226 Difference]: Without dead ends: 1232 [2024-11-14 05:51:23,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=104, Invalid=489, Unknown=7, NotChecked=0, Total=600 [2024-11-14 05:51:23,001 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 272 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:23,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 269 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:51:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2024-11-14 05:51:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1147. [2024-11-14 05:51:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1083 states have (on average 1.3628808864265929) internal successors, (1476), 1114 states have internal predecessors, (1476), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-14 05:51:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1530 transitions. [2024-11-14 05:51:23,117 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1530 transitions. Word has length 47 [2024-11-14 05:51:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:23,118 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1530 transitions. [2024-11-14 05:51:23,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:51:23,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1530 transitions. [2024-11-14 05:51:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-14 05:51:23,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:23,120 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:51:23,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-14 05:51:23,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-14 05:51:23,320 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:51:23,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2140744553, now seen corresponding path program 1 times [2024-11-14 05:51:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:51:23,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416939658] [2024-11-14 05:51:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:51:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:23,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:51:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416939658] [2024-11-14 05:51:23,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416939658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135722802] [2024-11-14 05:51:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:23,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:23,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:23,646 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:23,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-14 05:51:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:23,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:51:23,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 05:51:23,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:51:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135722802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:51:23,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:51:23,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-14 05:51:23,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319315286] [2024-11-14 05:51:23,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:51:23,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:51:23,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:51:23,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:51:23,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:51:23,897 INFO L87 Difference]: Start difference. First operand 1147 states and 1530 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:51:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:24,667 INFO L93 Difference]: Finished difference Result 1880 states and 2595 transitions. [2024-11-14 05:51:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:51:24,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-14 05:51:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:24,672 INFO L225 Difference]: With dead ends: 1880 [2024-11-14 05:51:24,672 INFO L226 Difference]: Without dead ends: 1418 [2024-11-14 05:51:24,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:51:24,675 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 165 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:24,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 62 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:51:24,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2024-11-14 05:51:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1229. [2024-11-14 05:51:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1161 states have (on average 1.3169681309216192) internal successors, (1529), 1186 states have internal predecessors, (1529), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-14 05:51:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1603 transitions. [2024-11-14 05:51:24,813 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1603 transitions. Word has length 48 [2024-11-14 05:51:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:24,814 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 1603 transitions. [2024-11-14 05:51:24,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:51:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1603 transitions. [2024-11-14 05:51:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 05:51:24,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:24,815 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 05:51:24,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-14 05:51:25,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-14 05:51:25,016 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:51:25,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1040490043, now seen corresponding path program 1 times [2024-11-14 05:51:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:51:25,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995880833] [2024-11-14 05:51:25,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:25,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:51:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:25,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:51:25,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995880833] [2024-11-14 05:51:25,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995880833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:51:25,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:51:25,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:51:25,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506946982] [2024-11-14 05:51:25,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:51:25,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:51:25,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:51:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:51:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:51:25,276 INFO L87 Difference]: Start difference. First operand 1229 states and 1603 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:51:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:25,782 INFO L93 Difference]: Finished difference Result 2177 states and 2897 transitions. [2024-11-14 05:51:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:51:25,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2024-11-14 05:51:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:25,786 INFO L225 Difference]: With dead ends: 2177 [2024-11-14 05:51:25,786 INFO L226 Difference]: Without dead ends: 1281 [2024-11-14 05:51:25,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:51:25,789 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:25,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 130 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:51:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2024-11-14 05:51:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1253. [2024-11-14 05:51:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1180 states have (on average 1.3042372881355933) internal successors, (1539), 1205 states have internal predecessors, (1539), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-14 05:51:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1623 transitions. [2024-11-14 05:51:25,927 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1623 transitions. Word has length 49 [2024-11-14 05:51:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:25,928 INFO L471 AbstractCegarLoop]: Abstraction has 1253 states and 1623 transitions. [2024-11-14 05:51:25,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:51:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1623 transitions. [2024-11-14 05:51:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 05:51:25,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:25,929 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:51:25,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-14 05:51:25,929 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:51:25,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:25,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1938571840, now seen corresponding path program 1 times [2024-11-14 05:51:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:51:25,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362817316] [2024-11-14 05:51:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:51:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:26,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:51:26,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362817316] [2024-11-14 05:51:26,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362817316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:26,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831175140] [2024-11-14 05:51:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:26,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:26,394 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:26,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-14 05:51:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:26,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:51:26,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:27,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831175140] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:27,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:51:27,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 20 [2024-11-14 05:51:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815753696] [2024-11-14 05:51:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:51:27,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:51:27,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:51:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:51:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2024-11-14 05:51:27,933 INFO L87 Difference]: Start difference. First operand 1253 states and 1623 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:51:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:28,894 INFO L93 Difference]: Finished difference Result 1478 states and 1950 transitions. [2024-11-14 05:51:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:51:28,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2024-11-14 05:51:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:28,899 INFO L225 Difference]: With dead ends: 1478 [2024-11-14 05:51:28,899 INFO L226 Difference]: Without dead ends: 1477 [2024-11-14 05:51:28,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:51:28,900 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 240 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:28,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 50 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:51:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2024-11-14 05:51:29,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1252. [2024-11-14 05:51:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1180 states have (on average 1.290677966101695) internal successors, (1523), 1204 states have internal predecessors, (1523), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-14 05:51:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1607 transitions. [2024-11-14 05:51:29,034 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1607 transitions. Word has length 49 [2024-11-14 05:51:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:29,034 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1607 transitions. [2024-11-14 05:51:29,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:51:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1607 transitions. [2024-11-14 05:51:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:51:29,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:29,035 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:51:29,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-14 05:51:29,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:29,236 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:51:29,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1048263774, now seen corresponding path program 1 times [2024-11-14 05:51:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:51:29,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921294785] [2024-11-14 05:51:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:51:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:29,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:51:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921294785] [2024-11-14 05:51:29,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921294785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:29,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440896813] [2024-11-14 05:51:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:29,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:29,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:29,714 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:29,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-14 05:51:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:29,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:51:29,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:30,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:31,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440896813] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:31,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:51:31,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 20 [2024-11-14 05:51:31,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375541999] [2024-11-14 05:51:31,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:51:31,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:51:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:51:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:51:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2024-11-14 05:51:31,328 INFO L87 Difference]: Start difference. First operand 1252 states and 1607 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:51:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:32,003 INFO L93 Difference]: Finished difference Result 1300 states and 1667 transitions. [2024-11-14 05:51:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:51:32,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-14 05:51:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:32,007 INFO L225 Difference]: With dead ends: 1300 [2024-11-14 05:51:32,007 INFO L226 Difference]: Without dead ends: 1299 [2024-11-14 05:51:32,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:51:32,008 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 204 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:32,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 39 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:51:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2024-11-14 05:51:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1251. [2024-11-14 05:51:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1180 states have (on average 1.2771186440677966) internal successors, (1507), 1203 states have internal predecessors, (1507), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-14 05:51:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1591 transitions. [2024-11-14 05:51:32,127 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1591 transitions. Word has length 51 [2024-11-14 05:51:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:32,127 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 1591 transitions. [2024-11-14 05:51:32,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:51:32,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1591 transitions. [2024-11-14 05:51:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 05:51:32,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:32,128 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:51:32,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-14 05:51:32,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:32,329 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:51:32,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1863561517, now seen corresponding path program 1 times [2024-11-14 05:51:32,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:51:32,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579583030] [2024-11-14 05:51:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:32,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:51:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:51:32,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087205049] [2024-11-14 05:51:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:32,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:32,360 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:32,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 05:51:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:32,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:51:32,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:32,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:43,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:51:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579583030] [2024-11-14 05:51:43,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:51:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087205049] [2024-11-14 05:51:43,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087205049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [667339122] [2024-11-14 05:51:43,363 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-14 05:51:43,363 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:51:43,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:51:43,364 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:51:43,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:51:45,250 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2024-11-14 05:51:45,262 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:51:55,209 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_166| Int)) (let ((.cse4 (+ |v_ULTIMATE.start_main_~a~0#1_166| 1)) (.cse5 (= (mod |v_ULTIMATE.start_main_~a~0#1_166| 2) 0))) (let ((.cse0 (not .cse5)) (.cse1 (<= .cse4 0)) (.cse3 (or (< 0 .cse4) .cse5)) (.cse2 (div |v_ULTIMATE.start_main_~a~0#1_166| 2))) (and (or (and .cse0 .cse1 (<= .cse2 9223372036854775806)) (and .cse3 (<= .cse2 9223372036854775807))) (or (and .cse0 .cse1 (<= 0 (+ 9223372036854775809 .cse2))) (and .cse3 (<= 0 (+ 9223372036854775808 .cse2)))) (or (and (= |c_ULTIMATE.start_main_~a~0#1| (+ .cse2 1)) .cse0 .cse1) (and .cse3 (= |c_ULTIMATE.start_main_~a~0#1| .cse2))))))) is different from true [2024-11-14 05:52:42,356 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50075#(exists ((|v_ULTIMATE.start_main_~b~0#1_172| Int) (|v_ULTIMATE.start_main_~a~0#1_168| Int) (|v_ULTIMATE.start_main_~p~0#1_104| Int)) (and (<= (+ (* |v_ULTIMATE.start_main_~a~0#1_168| |v_ULTIMATE.start_main_~p~0#1_104|) 9223372036854775809 (* |v_ULTIMATE.start_main_~b~0#1_172| |v_ULTIMATE.start_main_~p~0#1_104|) |v_ULTIMATE.start_main_~p~0#1_104|) 0) (<= 0 (+ ~counter~0 2147483648)) (<= 0 (+ 9223372036854775808 |v_ULTIMATE.start_main_~b~0#1_172|)) (<= |v_ULTIMATE.start_main_~b~0#1_172| 9223372036854775807) (<= |v_ULTIMATE.start_main_~a~0#1_168| 9223372036854775807) (<= (+ |v_ULTIMATE.start_main_~a~0#1_168| |v_ULTIMATE.start_main_~b~0#1_172|) 9223372036854775806) (<= ~counter~0 2147483647) (or (< (+ |v_ULTIMATE.start_main_~b~0#1_172| 1) 0) (not (= (mod (+ |v_ULTIMATE.start_main_~b~0#1_172| 1) 2) 1)) (not (= (mod (+ |v_ULTIMATE.start_main_~a~0#1_168| 1) 2) 0))) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_168| 9223372036854775808 |v_ULTIMATE.start_main_~b~0#1_172|)) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_168| 9223372036854775808))))' at error location [2024-11-14 05:52:42,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:52:42,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:52:42,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-14 05:52:42,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222056055] [2024-11-14 05:52:42,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:52:42,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 05:52:42,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:52:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 05:52:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1932, Unknown=18, NotChecked=92, Total=2352 [2024-11-14 05:52:42,358 INFO L87 Difference]: Start difference. First operand 1251 states and 1591 transitions. Second operand has 18 states, 17 states have (on average 5.470588235294118) internal successors, (93), 18 states have internal predecessors, (93), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:53:08,928 WARN L286 SmtUtils]: Spent 26.06s on a formula simplification. DAG size of input: 62 DAG size of output: 41 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:53:17,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 05:53:19,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 05:53:21,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 05:53:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:38,261 INFO L93 Difference]: Finished difference Result 1840 states and 2391 transitions. [2024-11-14 05:53:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 05:53:38,261 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.470588235294118) internal successors, (93), 18 states have internal predecessors, (93), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2024-11-14 05:53:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:38,281 INFO L225 Difference]: With dead ends: 1840 [2024-11-14 05:53:38,281 INFO L226 Difference]: Without dead ends: 1837 [2024-11-14 05:53:38,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 100.1s TimeCoverageRelationStatistics Valid=444, Invalid=2620, Unknown=20, NotChecked=108, Total=3192 [2024-11-14 05:53:38,283 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 448 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 77 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:38,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 338 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1456 Invalid, 3 Unknown, 0 Unchecked, 21.6s Time] [2024-11-14 05:53:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2024-11-14 05:53:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1393. [2024-11-14 05:53:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1316 states have (on average 1.2727963525835866) internal successors, (1675), 1339 states have internal predecessors, (1675), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-14 05:53:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1771 transitions. [2024-11-14 05:53:38,440 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1771 transitions. Word has length 52 [2024-11-14 05:53:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:38,440 INFO L471 AbstractCegarLoop]: Abstraction has 1393 states and 1771 transitions. [2024-11-14 05:53:38,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.470588235294118) internal successors, (93), 18 states have internal predecessors, (93), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:53:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1771 transitions. [2024-11-14 05:53:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 05:53:38,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:38,441 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:38,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-14 05:53:38,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:53:38,642 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:53:38,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1935832324, now seen corresponding path program 1 times [2024-11-14 05:53:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:53:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733334460] [2024-11-14 05:53:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:53:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:53:38,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483487067] [2024-11-14 05:53:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:38,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:53:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:53:38,672 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:53:38,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-14 05:53:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:38,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:53:38,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:53:39,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:44,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:53:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733334460] [2024-11-14 05:53:44,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:53:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483487067] [2024-11-14 05:53:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483487067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:53:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [625651338] [2024-11-14 05:53:44,383 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-14 05:53:44,383 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:53:44,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:53:44,383 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:53:44,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:53:46,729 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2024-11-14 05:53:46,738 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:53:57,606 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_176| Int)) (let ((.cse5 (= (mod |v_ULTIMATE.start_main_~a~0#1_176| 2) 0)) (.cse4 (+ |v_ULTIMATE.start_main_~a~0#1_176| 1))) (let ((.cse1 (or .cse5 (< 0 .cse4))) (.cse2 (not .cse5)) (.cse0 (div |v_ULTIMATE.start_main_~a~0#1_176| 2)) (.cse3 (<= .cse4 0))) (and (or (and (<= .cse0 9223372036854775807) .cse1) (and .cse2 (<= .cse0 9223372036854775806) .cse3)) (or (and .cse2 (= |c_ULTIMATE.start_main_~a~0#1| (+ .cse0 1)) .cse3) (and (= |c_ULTIMATE.start_main_~a~0#1| .cse0) .cse1)) (or (and (<= 0 (+ .cse0 9223372036854775808)) .cse1) (and .cse2 (<= 0 (+ 9223372036854775809 .cse0)) .cse3)))))) is different from true [2024-11-14 05:54:54,316 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '53899#(exists ((|v_ULTIMATE.start_main_~a~0#1_178| Int) (|v_ULTIMATE.start_main_~b~0#1_182| Int) (|v_ULTIMATE.start_main_~p~0#1_111| Int)) (and (<= 0 (+ ~counter~0 2147483648)) (<= 0 (+ 9223372036854775808 |v_ULTIMATE.start_main_~b~0#1_182|)) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_178| 9223372036854775808)) (<= |v_ULTIMATE.start_main_~a~0#1_178| 9223372036854775807) (<= |v_ULTIMATE.start_main_~b~0#1_182| 9223372036854775807) (or (not (= (mod (+ |v_ULTIMATE.start_main_~a~0#1_178| 1) 2) 0)) (< (+ |v_ULTIMATE.start_main_~b~0#1_182| 1) 0) (not (= (mod (+ |v_ULTIMATE.start_main_~b~0#1_182| 1) 2) 1))) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_178| 9223372036854775808 |v_ULTIMATE.start_main_~b~0#1_182|)) (<= (+ |v_ULTIMATE.start_main_~a~0#1_178| |v_ULTIMATE.start_main_~b~0#1_182|) 9223372036854775806) (<= ~counter~0 2147483647) (<= 9223372036854775808 (+ (* |v_ULTIMATE.start_main_~b~0#1_182| |v_ULTIMATE.start_main_~p~0#1_111|) |v_ULTIMATE.start_main_~p~0#1_111| (* |v_ULTIMATE.start_main_~a~0#1_178| |v_ULTIMATE.start_main_~p~0#1_111|)))))' at error location [2024-11-14 05:54:54,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:54:54,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:54:54,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-14 05:54:54,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721286565] [2024-11-14 05:54:54,317 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:54:54,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:54:54,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:54:54,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:54:54,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1858, Unknown=20, NotChecked=90, Total=2256 [2024-11-14 05:54:54,319 INFO L87 Difference]: Start difference. First operand 1393 states and 1771 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:54:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:54:56,059 INFO L93 Difference]: Finished difference Result 1508 states and 1920 transitions. [2024-11-14 05:54:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:54:56,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2024-11-14 05:54:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:54:56,065 INFO L225 Difference]: With dead ends: 1508 [2024-11-14 05:54:56,065 INFO L226 Difference]: Without dead ends: 1497 [2024-11-14 05:54:56,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 70.5s TimeCoverageRelationStatistics Valid=302, Invalid=1938, Unknown=20, NotChecked=92, Total=2352 [2024-11-14 05:54:56,068 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 92 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:54:56,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 264 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:54:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2024-11-14 05:54:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1462. [2024-11-14 05:54:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1382 states have (on average 1.2655571635311142) internal successors, (1749), 1405 states have internal predecessors, (1749), 51 states have call successors, (51), 6 states have call predecessors, (51), 6 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-14 05:54:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1851 transitions. [2024-11-14 05:54:56,269 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1851 transitions. Word has length 53 [2024-11-14 05:54:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:54:56,269 INFO L471 AbstractCegarLoop]: Abstraction has 1462 states and 1851 transitions. [2024-11-14 05:54:56,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:54:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1851 transitions. [2024-11-14 05:54:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:54:56,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:54:56,270 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:54:56,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-14 05:54:56,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-14 05:54:56,471 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:54:56,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:54:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash -382582961, now seen corresponding path program 1 times [2024-11-14 05:54:56,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:54:56,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544798796] [2024-11-14 05:54:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:54:56,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:54:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:54:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:54:57,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:54:57,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544798796] [2024-11-14 05:54:57,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544798796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:54:57,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:54:57,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:54:57,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64662458] [2024-11-14 05:54:57,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:54:57,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:54:57,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:54:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:54:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:54:57,248 INFO L87 Difference]: Start difference. First operand 1462 states and 1851 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:54:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:54:58,498 INFO L93 Difference]: Finished difference Result 2126 states and 2751 transitions. [2024-11-14 05:54:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:54:58,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-11-14 05:54:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:54:58,504 INFO L225 Difference]: With dead ends: 2126 [2024-11-14 05:54:58,505 INFO L226 Difference]: Without dead ends: 1423 [2024-11-14 05:54:58,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:54:58,507 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 41 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:54:58,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 103 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:54:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2024-11-14 05:54:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1357. [2024-11-14 05:54:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1278 states have (on average 1.2582159624413145) internal successors, (1608), 1301 states have internal predecessors, (1608), 50 states have call successors, (50), 6 states have call predecessors, (50), 6 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-14 05:54:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1708 transitions. [2024-11-14 05:54:58,703 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1708 transitions. Word has length 55 [2024-11-14 05:54:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:54:58,704 INFO L471 AbstractCegarLoop]: Abstraction has 1357 states and 1708 transitions. [2024-11-14 05:54:58,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:54:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1708 transitions. [2024-11-14 05:54:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:54:58,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:54:58,705 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:54:58,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-14 05:54:58,706 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:54:58,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:54:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash -813908886, now seen corresponding path program 1 times [2024-11-14 05:54:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:54:58,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259200078] [2024-11-14 05:54:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:54:58,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:54:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:54:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:54:59,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:54:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259200078] [2024-11-14 05:54:59,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259200078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:54:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795817686] [2024-11-14 05:54:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:54:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:54:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:54:59,656 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:54:59,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-14 05:54:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:54:59,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:54:59,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:55:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:55:00,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:55:04,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795817686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:55:04,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1265708225] [2024-11-14 05:55:04,052 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2024-11-14 05:55:04,052 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:55:04,052 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:55:04,053 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:55:04,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:55:05,430 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 54 for LOIs [2024-11-14 05:55:05,443 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:55:17,508 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '61219#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~b~0#1_188| Int)) (and (<= 0 (+ 9223372036854775808 |v_ULTIMATE.start_main_~b~0#1_188|)) (= (mod |v_ULTIMATE.start_main_~b~0#1_188| 2) 0) (<= (+ |v_ULTIMATE.start_main_~b~0#1_188| 1) 0))) (<= |ULTIMATE.start_main_~a~0#1| 2147483646) (= (mod (+ |ULTIMATE.start_main_~a~0#1| 1) 2) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 1)))' at error location [2024-11-14 05:55:17,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:55:17,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:55:17,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2024-11-14 05:55:17,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109606233] [2024-11-14 05:55:17,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:55:17,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:55:17,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:55:17,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:55:17,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1515, Unknown=1, NotChecked=0, Total=1722 [2024-11-14 05:55:17,510 INFO L87 Difference]: Start difference. First operand 1357 states and 1708 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:55:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:55:19,741 INFO L93 Difference]: Finished difference Result 1806 states and 2311 transitions. [2024-11-14 05:55:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 05:55:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2024-11-14 05:55:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:55:19,747 INFO L225 Difference]: With dead ends: 1806 [2024-11-14 05:55:19,747 INFO L226 Difference]: Without dead ends: 1359 [2024-11-14 05:55:19,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 109 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=336, Invalid=2315, Unknown=1, NotChecked=0, Total=2652 [2024-11-14 05:55:19,749 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 89 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:55:19,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 246 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:55:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2024-11-14 05:55:19,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1346. [2024-11-14 05:55:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1267 states have (on average 1.2573007103393843) internal successors, (1593), 1290 states have internal predecessors, (1593), 50 states have call successors, (50), 6 states have call predecessors, (50), 6 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-14 05:55:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1693 transitions. [2024-11-14 05:55:19,936 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1693 transitions. Word has length 55 [2024-11-14 05:55:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:55:19,936 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1693 transitions. [2024-11-14 05:55:19,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:55:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1693 transitions. [2024-11-14 05:55:19,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:55:19,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:55:19,938 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:55:19,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-14 05:55:20,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-14 05:55:20,138 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:55:20,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:55:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1178897866, now seen corresponding path program 1 times [2024-11-14 05:55:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:55:20,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540029181] [2024-11-14 05:55:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:55:20,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:55:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:55:20,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632414380] [2024-11-14 05:55:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:55:20,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:55:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:55:20,163 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:55:20,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-14 05:55:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:55:20,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:55:20,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:55:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:55:20,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:55:20,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:55:20,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540029181] [2024-11-14 05:55:20,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:55:20,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632414380] [2024-11-14 05:55:20,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632414380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:55:20,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:55:20,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:55:20,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951377786] [2024-11-14 05:55:20,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:55:20,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:55:20,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:55:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:55:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:55:20,724 INFO L87 Difference]: Start difference. First operand 1346 states and 1693 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:55:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:55:21,994 INFO L93 Difference]: Finished difference Result 1448 states and 1813 transitions. [2024-11-14 05:55:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:55:21,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-11-14 05:55:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:55:21,998 INFO L225 Difference]: With dead ends: 1448 [2024-11-14 05:55:21,999 INFO L226 Difference]: Without dead ends: 1447 [2024-11-14 05:55:21,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:55:21,999 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 72 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:55:22,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 242 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:55:22,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2024-11-14 05:55:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1346. [2024-11-14 05:55:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1267 states have (on average 1.2541436464088398) internal successors, (1589), 1290 states have internal predecessors, (1589), 50 states have call successors, (50), 6 states have call predecessors, (50), 6 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-14 05:55:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1689 transitions. [2024-11-14 05:55:22,114 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1689 transitions. Word has length 55 [2024-11-14 05:55:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:55:22,114 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1689 transitions. [2024-11-14 05:55:22,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:55:22,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1689 transitions. [2024-11-14 05:55:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:55:22,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:55:22,115 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:55:22,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-14 05:55:22,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-14 05:55:22,316 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:55:22,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:55:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1696850016, now seen corresponding path program 1 times [2024-11-14 05:55:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:55:22,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074169531] [2024-11-14 05:55:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:55:22,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:55:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:55:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:55:22,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:55:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074169531] [2024-11-14 05:55:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074169531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:55:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533094387] [2024-11-14 05:55:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:55:22,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:55:22,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:55:22,834 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:55:22,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-14 05:55:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:55:22,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:55:22,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:55:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:55:23,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:55:26,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533094387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:55:26,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [348655687] [2024-11-14 05:55:26,202 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2024-11-14 05:55:26,202 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:55:26,202 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:55:26,202 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:55:26,202 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:55:28,313 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 102 for LOIs [2024-11-14 05:55:28,400 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:55:38,192 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '68113#(exists ((|v_ULTIMATE.start_main_~a~0#1_190| Int) (|v_ULTIMATE.start_main_~p~0#1_114| Int) (|v_ULTIMATE.start_main_~b~0#1_197| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_main_~a~0#1_190| 2147483646) (<= 0 (+ 2147483649 |v_ULTIMATE.start_main_~a~0#1_190|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_190| 9223372036854775808 |v_ULTIMATE.start_main_~b~0#1_197|)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (<= 0 (+ 9223372036854775808 |v_ULTIMATE.start_main_~b~0#1_197|)) (<= |v_ULTIMATE.start_main_~b~0#1_197| 2147483646) (= |v_ULTIMATE.start_main_~p~0#1_114| 1) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)))' at error location [2024-11-14 05:55:38,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:55:38,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:55:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-14 05:55:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224790418] [2024-11-14 05:55:38,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:55:38,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:55:38,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:55:38,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:55:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=736, Unknown=1, NotChecked=0, Total=930 [2024-11-14 05:55:38,193 INFO L87 Difference]: Start difference. First operand 1346 states and 1689 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:55:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:55:39,862 INFO L93 Difference]: Finished difference Result 1917 states and 2457 transitions. [2024-11-14 05:55:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 05:55:39,863 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2024-11-14 05:55:39,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:55:39,867 INFO L225 Difference]: With dead ends: 1917 [2024-11-14 05:55:39,867 INFO L226 Difference]: Without dead ends: 1312 [2024-11-14 05:55:39,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 81 SyntacticMatches, 27 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=284, Invalid=1121, Unknown=1, NotChecked=0, Total=1406 [2024-11-14 05:55:39,869 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 53 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:55:39,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 187 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:55:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2024-11-14 05:55:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1280. [2024-11-14 05:55:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1204 states have (on average 1.2475083056478404) internal successors, (1502), 1226 states have internal predecessors, (1502), 47 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-14 05:55:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1596 transitions. [2024-11-14 05:55:39,984 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1596 transitions. Word has length 56 [2024-11-14 05:55:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:55:39,984 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1596 transitions. [2024-11-14 05:55:39,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:55:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1596 transitions. [2024-11-14 05:55:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:55:39,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:55:39,985 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:55:40,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-14 05:55:40,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:55:40,187 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:55:40,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:55:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 522529902, now seen corresponding path program 1 times [2024-11-14 05:55:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:55:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159016083] [2024-11-14 05:55:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:55:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:55:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:55:40,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325333623] [2024-11-14 05:55:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:55:40,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:55:40,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:55:40,206 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:55:40,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-14 05:55:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:55:40,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:55:40,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:55:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:55:40,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:55:41,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:55:41,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159016083] [2024-11-14 05:55:41,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:55:41,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325333623] [2024-11-14 05:55:41,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325333623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:55:41,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2118581796] [2024-11-14 05:55:41,544 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2024-11-14 05:55:41,544 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:55:41,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:55:41,544 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:55:41,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:55:42,373 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 54 for LOIs [2024-11-14 05:55:42,389 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:55:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2118581796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:55:52,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:55:52,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 29 [2024-11-14 05:55:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680043592] [2024-11-14 05:55:52,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:55:52,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:55:52,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:55:52,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:55:52,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:55:52,528 INFO L87 Difference]: Start difference. First operand 1280 states and 1596 transitions. Second operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:56:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:56:04,751 INFO L93 Difference]: Finished difference Result 1295 states and 1604 transitions. [2024-11-14 05:56:04,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-14 05:56:04,752 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-14 05:56:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:56:04,754 INFO L225 Difference]: With dead ends: 1295 [2024-11-14 05:56:04,754 INFO L226 Difference]: Without dead ends: 1289 [2024-11-14 05:56:04,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 106 SyntacticMatches, 13 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=477, Invalid=2385, Unknown=0, NotChecked=0, Total=2862 [2024-11-14 05:56:04,755 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 213 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:56:04,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 74 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-14 05:56:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2024-11-14 05:56:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1282. [2024-11-14 05:56:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1205 states have (on average 1.2423236514522822) internal successors, (1497), 1227 states have internal predecessors, (1497), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-14 05:56:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1591 transitions. [2024-11-14 05:56:04,874 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1591 transitions. Word has length 56 [2024-11-14 05:56:04,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:56:04,874 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1591 transitions. [2024-11-14 05:56:04,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:56:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1591 transitions. [2024-11-14 05:56:04,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:56:04,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:56:04,875 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:56:04,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-14 05:56:05,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:56:05,076 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:56:05,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:56:05,076 INFO L85 PathProgramCache]: Analyzing trace with hash -748774945, now seen corresponding path program 1 times [2024-11-14 05:56:05,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:56:05,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141231628] [2024-11-14 05:56:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:56:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:56:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53762530] [2024-11-14 05:56:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:05,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:56:05,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:56:05,094 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:56:05,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-14 05:56:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:56:05,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:56:05,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:56:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:56:07,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:56:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:56:10,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:56:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141231628] [2024-11-14 05:56:10,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:56:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53762530] [2024-11-14 05:56:10,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53762530] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:56:10,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:56:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2024-11-14 05:56:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646429672] [2024-11-14 05:56:10,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:56:10,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:56:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:56:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:56:10,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:56:10,088 INFO L87 Difference]: Start difference. First operand 1282 states and 1591 transitions. Second operand has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:56:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:56:13,267 INFO L93 Difference]: Finished difference Result 1283 states and 1591 transitions. [2024-11-14 05:56:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:56:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-14 05:56:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:56:13,270 INFO L225 Difference]: With dead ends: 1283 [2024-11-14 05:56:13,270 INFO L226 Difference]: Without dead ends: 1282 [2024-11-14 05:56:13,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:56:13,271 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 99 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:56:13,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 81 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-14 05:56:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2024-11-14 05:56:13,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1282. [2024-11-14 05:56:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1205 states have (on average 1.237344398340249) internal successors, (1491), 1227 states have internal predecessors, (1491), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-14 05:56:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1585 transitions. [2024-11-14 05:56:13,409 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1585 transitions. Word has length 56 [2024-11-14 05:56:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:56:13,409 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1585 transitions. [2024-11-14 05:56:13,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:56:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1585 transitions. [2024-11-14 05:56:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:56:13,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:56:13,410 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:56:13,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-14 05:56:13,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:56:13,611 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:56:13,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:56:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash -310404846, now seen corresponding path program 1 times [2024-11-14 05:56:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:56:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881095551] [2024-11-14 05:56:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:56:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:56:13,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421335872] [2024-11-14 05:56:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:13,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:56:13,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:56:13,633 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:56:13,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-14 05:56:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:56:13,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:56:13,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:56:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:56:13,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:56:14,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:56:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881095551] [2024-11-14 05:56:14,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:56:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421335872] [2024-11-14 05:56:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421335872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:56:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106549952] [2024-11-14 05:56:14,354 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-14 05:56:14,354 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:56:14,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:56:14,355 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:56:14,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:56:31,348 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2024-11-14 05:56:31,355 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:56:39,775 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_214| Int)) (let ((.cse5 (= (mod |v_ULTIMATE.start_main_~a~0#1_214| 2) 0)) (.cse4 (+ |v_ULTIMATE.start_main_~a~0#1_214| 1))) (let ((.cse2 (<= .cse4 0)) (.cse3 (not .cse5)) (.cse0 (div |v_ULTIMATE.start_main_~a~0#1_214| 2)) (.cse1 (or (< 0 .cse4) .cse5))) (and (or (and (<= 0 (+ .cse0 9223372036854775808)) .cse1) (and .cse2 (<= 0 (+ .cse0 9223372036854775809)) .cse3)) (or (and .cse2 .cse3 (<= .cse0 9223372036854775806)) (and (<= .cse0 9223372036854775807) .cse1)) (or (and (= (+ .cse0 1) |c_ULTIMATE.start_main_~a~0#1|) .cse2 .cse3) (and (= .cse0 |c_ULTIMATE.start_main_~a~0#1|) .cse1)))))) is different from true [2024-11-14 05:57:16,701 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '78121#(and (<= 0 (+ ~counter~0 2147483648)) (<= ~counter~0 2147483647) (exists ((|v_ULTIMATE.start_main_~b~0#1_218| Int) (|v_ULTIMATE.start_main_~a~0#1_217| Int) (|v_ULTIMATE.start_main_~p~0#1_126| Int)) (and (<= (* |v_ULTIMATE.start_main_~a~0#1_217| |v_ULTIMATE.start_main_~b~0#1_218| |v_ULTIMATE.start_main_~p~0#1_126|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_217| |v_ULTIMATE.start_main_~b~0#1_218|))) (<= (* |v_ULTIMATE.start_main_~a~0#1_217| |v_ULTIMATE.start_main_~b~0#1_218|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_217| |v_ULTIMATE.start_main_~b~0#1_218| |v_ULTIMATE.start_main_~p~0#1_126|))))))' at error location [2024-11-14 05:57:16,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:57:16,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:57:16,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-11-14 05:57:16,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298799769] [2024-11-14 05:57:16,701 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:57:16,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:57:16,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:57:16,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:57:16,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=724, Unknown=16, NotChecked=58, Total=992 [2024-11-14 05:57:16,702 INFO L87 Difference]: Start difference. First operand 1282 states and 1585 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:57:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:57:17,798 INFO L93 Difference]: Finished difference Result 1439 states and 1782 transitions. [2024-11-14 05:57:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:57:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2024-11-14 05:57:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:57:17,801 INFO L225 Difference]: With dead ends: 1439 [2024-11-14 05:57:17,801 INFO L226 Difference]: Without dead ends: 1438 [2024-11-14 05:57:17,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=210, Invalid=834, Unknown=16, NotChecked=62, Total=1122 [2024-11-14 05:57:17,801 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 66 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:57:17,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 157 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:57:17,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2024-11-14 05:57:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1351. [2024-11-14 05:57:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1271 states have (on average 1.2297403619197482) internal successors, (1563), 1293 states have internal predecessors, (1563), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-14 05:57:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1663 transitions. [2024-11-14 05:57:17,913 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1663 transitions. Word has length 57 [2024-11-14 05:57:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:57:17,913 INFO L471 AbstractCegarLoop]: Abstraction has 1351 states and 1663 transitions. [2024-11-14 05:57:17,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:57:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1663 transitions. [2024-11-14 05:57:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:57:17,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:57:17,914 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:57:17,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-14 05:57:18,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:57:18,115 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 05:57:18,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:57:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash 950518840, now seen corresponding path program 2 times [2024-11-14 05:57:18,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:57:18,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406492638] [2024-11-14 05:57:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:57:18,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:57:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:57:18,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083476795] [2024-11-14 05:57:18,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:57:18,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:57:18,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:57:18,131 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:57:18,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-14 05:57:18,182 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:57:18,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:57:18,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:57:18,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:57:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:57:24,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:57:24,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:57:24,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406492638] [2024-11-14 05:57:24,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:57:24,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083476795] [2024-11-14 05:57:24,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083476795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:57:24,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [318538233] [2024-11-14 05:57:24,614 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-14 05:57:24,614 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:57:24,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:57:24,614 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:57:24,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:57:42,504 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2024-11-14 05:57:42,569 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:57:51,958 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_232| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_main_~a~0#1_232| 1)) (.cse4 (= (mod |v_ULTIMATE.start_main_~a~0#1_232| 2) 0))) (let ((.cse2 (not .cse4)) (.cse3 (<= .cse5 0)) (.cse0 (or .cse4 (< 0 .cse5))) (.cse1 (div |v_ULTIMATE.start_main_~a~0#1_232| 2))) (and (or (and .cse0 (= .cse1 |c_ULTIMATE.start_main_~a~0#1|)) (and (= (+ .cse1 1) |c_ULTIMATE.start_main_~a~0#1|) .cse2 .cse3)) (or (and .cse2 (<= 0 (+ .cse1 9223372036854775809)) .cse3) (and .cse0 (<= 0 (+ .cse1 9223372036854775808)))) (or (and (<= .cse1 9223372036854775806) .cse2 .cse3) (and .cse0 (<= .cse1 9223372036854775807))))))) is different from true [2024-11-14 05:58:32,818 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '81403#(and (<= 0 (+ ~counter~0 2147483648)) (exists ((|v_ULTIMATE.start_main_~a~0#1_235| Int) (|v_ULTIMATE.start_main_~b~0#1_225| Int) (|v_ULTIMATE.start_main_~p~0#1_133| Int)) (and (<= (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_225| |v_ULTIMATE.start_main_~p~0#1_133|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_225|))) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_225| |v_ULTIMATE.start_main_~p~0#1_133|))) (<= (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_225|) 9223372036854775807))) (<= ~counter~0 2147483647))' at error location [2024-11-14 05:58:32,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:58:32,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:58:32,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-14 05:58:32,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232258629] [2024-11-14 05:58:32,818 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:58:32,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:58:32,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:58:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:58:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=905, Unknown=12, NotChecked=64, Total=1190 [2024-11-14 05:58:32,819 INFO L87 Difference]: Start difference. First operand 1351 states and 1663 transitions. Second operand has 7 states, 5 states have (on average 8.2) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:58:34,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:38,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:40,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:43,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:44,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:46,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:48,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:50,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:52,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:54,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:56,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:58:58,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:00,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:02,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:04,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:06,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:08,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:10,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:12,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:16,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:18,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:20,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:22,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:25,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:27,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:29,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:31,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:33,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:35,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:37,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:39,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:41,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:43,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:45,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:47,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:49,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:52,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:54,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:56,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 05:59:58,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:00,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:03,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:05,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:07,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:09,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:11,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:13,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:15,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:17,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:20,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:22,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:24,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:26,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:27,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:29,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 06:00:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 06:00:29,770 INFO L93 Difference]: Finished difference Result 1423 states and 1742 transitions. [2024-11-14 06:00:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 06:00:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.2) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-14 06:00:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 06:00:29,773 INFO L225 Difference]: With dead ends: 1423 [2024-11-14 06:00:29,773 INFO L226 Difference]: Without dead ends: 1422 [2024-11-14 06:00:29,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=221, Invalid=1031, Unknown=12, NotChecked=68, Total=1332 [2024-11-14 06:00:29,774 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 56 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 2 mSolverCounterUnsat, 54 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 54 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.6s IncrementalHoareTripleChecker+Time [2024-11-14 06:00:29,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 198 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 358 Invalid, 54 Unknown, 0 Unchecked, 112.6s Time] [2024-11-14 06:00:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2024-11-14 06:00:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1387. [2024-11-14 06:00:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1307 states have (on average 1.225707727620505) internal successors, (1602), 1329 states have internal predecessors, (1602), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-14 06:00:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1702 transitions. [2024-11-14 06:00:29,893 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1702 transitions. Word has length 57 [2024-11-14 06:00:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 06:00:29,893 INFO L471 AbstractCegarLoop]: Abstraction has 1387 states and 1702 transitions. [2024-11-14 06:00:29,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.2) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 06:00:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1702 transitions. [2024-11-14 06:00:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 06:00:29,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 06:00:29,893 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 06:00:29,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-14 06:00:30,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 06:00:30,094 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-14 06:00:30,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 06:00:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1032615570, now seen corresponding path program 1 times [2024-11-14 06:00:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 06:00:30,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397659072] [2024-11-14 06:00:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 06:00:30,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 06:00:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 06:00:30,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932311500] [2024-11-14 06:00:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 06:00:30,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 06:00:30,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 06:00:30,113 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 06:00:30,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cfb2ca-5a4e-4444-922b-df190c1b86d7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-14 06:00:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 06:00:30,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-14 06:00:30,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 06:00:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 06:00:31,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 06:01:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 06:01:07,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 06:01:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397659072] [2024-11-14 06:01:07,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 06:01:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932311500] [2024-11-14 06:01:07,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932311500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 06:01:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1584410929] [2024-11-14 06:01:07,719 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-14 06:01:07,719 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 06:01:07,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 06:01:07,719 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 06:01:07,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs