./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:12:27,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:12:27,454 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 01:12:27,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:12:27,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:12:27,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:12:27,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:12:27,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:12:27,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:12:27,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:12:27,512 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:12:27,512 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:12:27,514 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:12:27,514 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:12:27,515 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:12:27,517 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:12:27,518 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:12:27,518 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:12:27,518 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:12:27,519 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:12:27,519 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:12:27,520 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:12:27,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:12:27,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:12:27,524 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:12:27,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:12:27,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:12:27,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:12:27,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:12:27,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:12:27,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:12:27,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:12:27,526 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 01:12:27,529 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 01:12:27,529 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:12:27,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:12:27,529 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:12:27,530 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:12:27,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:12:27,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:12:27,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:12:27,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:12:27,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:12:27,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:12:27,534 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:12:27,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:12:27,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:12:27,534 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:12:27,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:12:27,535 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2024-11-09 01:12:27,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:12:27,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:12:27,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:12:27,898 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:12:27,898 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:12:27,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i Unable to find full path for "g++" [2024-11-09 01:12:29,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:12:30,136 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:12:30,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2024-11-09 01:12:30,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/data/c615aa4fd/986672ac279e4b0dbd81facc1435373f/FLAGace3d6252 [2024-11-09 01:12:30,157 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/data/c615aa4fd/986672ac279e4b0dbd81facc1435373f [2024-11-09 01:12:30,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:12:30,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:12:30,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:12:30,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:12:30,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:12:30,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84d2740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30, skipping insertion in model container [2024-11-09 01:12:30,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:12:30,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:12:30,380 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:12:30,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:12:30,411 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:12:30,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30 WrapperNode [2024-11-09 01:12:30,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:12:30,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:12:30,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:12:30,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:12:30,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,440 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2024-11-09 01:12:30,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:12:30,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:12:30,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:12:30,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:12:30,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:12:30,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:12:30,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:12:30,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:12:30,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (1/1) ... [2024-11-09 01:12:30,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:12:30,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:30,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:12:30,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:12:30,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:12:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:12:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:12:30,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:12:30,618 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:12:30,622 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:12:30,785 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-09 01:12:30,785 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:12:30,839 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:12:30,839 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 01:12:30,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:12:30 BoogieIcfgContainer [2024-11-09 01:12:30,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:12:30,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:12:30,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:12:30,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:12:30,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:12:30" (1/3) ... [2024-11-09 01:12:30,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dac4a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:12:30, skipping insertion in model container [2024-11-09 01:12:30,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:30" (2/3) ... [2024-11-09 01:12:30,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dac4a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:12:30, skipping insertion in model container [2024-11-09 01:12:30,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:12:30" (3/3) ... [2024-11-09 01:12:30,853 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2024-11-09 01:12:30,872 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:12:30,873 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 01:12:30,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:12:30,962 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;@360510c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:12:30,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 01:12:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:30,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:12:30,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:30,975 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:12:30,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:30,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2390841, now seen corresponding path program 1 times [2024-11-09 01:12:30,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:30,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810791255] [2024-11-09 01:12:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:30,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:31,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:31,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810791255] [2024-11-09 01:12:31,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810791255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:12:31,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:12:31,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:12:31,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185899691] [2024-11-09 01:12:31,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:12:31,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 01:12:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 01:12:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 01:12:31,195 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2024-11-09 01:12:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:31,216 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-11-09 01:12:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 01:12:31,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2024-11-09 01:12:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:31,227 INFO L225 Difference]: With dead ends: 24 [2024-11-09 01:12:31,227 INFO L226 Difference]: Without dead ends: 16 [2024-11-09 01:12:31,230 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 [2024-11-09 01:12:31,234 INFO L432 NwaCegarLoop]: 16 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, 16 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 [2024-11-09 01:12:31,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-09 01:12:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-09 01:12:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-09 01:12:31,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2024-11-09 01:12:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:31,268 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-09 01:12:31,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2024-11-09 01:12:31,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-09 01:12:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 01:12:31,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:31,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 01:12:31,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:12:31,270 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:31,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash 74101301, now seen corresponding path program 1 times [2024-11-09 01:12:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266012509] [2024-11-09 01:12:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:31,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:31,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266012509] [2024-11-09 01:12:31,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266012509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:12:31,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:12:31,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:12:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348044875] [2024-11-09 01:12:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:12:31,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:12:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:12:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:12:31,356 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:31,374 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2024-11-09 01:12:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:12:31,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 01:12:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:31,375 INFO L225 Difference]: With dead ends: 16 [2024-11-09 01:12:31,375 INFO L226 Difference]: Without dead ends: 15 [2024-11-09 01:12:31,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:12:31,377 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:31,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-09 01:12:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-09 01:12:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-09 01:12:31,389 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2024-11-09 01:12:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:31,390 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-09 01:12:31,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-09 01:12:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 01:12:31,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:31,391 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 01:12:31,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 01:12:31,391 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:31,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:31,392 INFO L85 PathProgramCache]: Analyzing trace with hash 74101250, now seen corresponding path program 1 times [2024-11-09 01:12:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:31,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84530615] [2024-11-09 01:12:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:31,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:31,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:31,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84530615] [2024-11-09 01:12:31,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84530615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:12:31,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:12:31,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:12:31,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862831475] [2024-11-09 01:12:31,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:12:31,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:12:31,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:12:31,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:12:31,445 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:31,467 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2024-11-09 01:12:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:12:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 01:12:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:31,468 INFO L225 Difference]: With dead ends: 23 [2024-11-09 01:12:31,468 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 01:12:31,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:12:31,470 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:31,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 01:12:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2024-11-09 01:12:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-09 01:12:31,476 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2024-11-09 01:12:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:31,476 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-09 01:12:31,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-09 01:12:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 01:12:31,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:31,477 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 01:12:31,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 01:12:31,478 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:31,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:31,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1997826915, now seen corresponding path program 1 times [2024-11-09 01:12:31,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:31,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997342457] [2024-11-09 01:12:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:31,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:31,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:31,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997342457] [2024-11-09 01:12:31,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997342457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:12:31,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:12:31,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:12:31,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250287011] [2024-11-09 01:12:31,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:12:31,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:12:31,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:12:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:12:31,558 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:31,575 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2024-11-09 01:12:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:12:31,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 01:12:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:31,576 INFO L225 Difference]: With dead ends: 23 [2024-11-09 01:12:31,577 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 01:12:31,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:12:31,578 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:31,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 01:12:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-09 01:12:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-09 01:12:31,586 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2024-11-09 01:12:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:31,587 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-09 01:12:31,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-09 01:12:31,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 01:12:31,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:31,588 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 01:12:31,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 01:12:31,588 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:31,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1997828485, now seen corresponding path program 1 times [2024-11-09 01:12:31,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:31,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528357778] [2024-11-09 01:12:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:31,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:31,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:31,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528357778] [2024-11-09 01:12:31,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528357778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:12:31,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:12:31,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:12:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139102938] [2024-11-09 01:12:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:12:31,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:12:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:12:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:12:31,657 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:31,702 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2024-11-09 01:12:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:12:31,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 01:12:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:31,703 INFO L225 Difference]: With dead ends: 22 [2024-11-09 01:12:31,703 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 01:12:31,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:12:31,705 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:31,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 01:12:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 01:12:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-11-09 01:12:31,718 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2024-11-09 01:12:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:31,718 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-11-09 01:12:31,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-11-09 01:12:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 01:12:31,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:31,719 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:12:31,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 01:12:31,720 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:31,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1803092169, now seen corresponding path program 1 times [2024-11-09 01:12:31,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:31,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076129911] [2024-11-09 01:12:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:31,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076129911] [2024-11-09 01:12:31,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076129911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:12:31,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:12:31,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:12:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495772389] [2024-11-09 01:12:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:12:31,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:12:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:31,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:12:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:12:31,803 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:31,839 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2024-11-09 01:12:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:12:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 01:12:31,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:31,842 INFO L225 Difference]: With dead ends: 19 [2024-11-09 01:12:31,842 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 01:12:31,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:12:31,844 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:31,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 01:12:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 01:12:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-11-09 01:12:31,861 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2024-11-09 01:12:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:31,862 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2024-11-09 01:12:31,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-11-09 01:12:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 01:12:31,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:31,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:12:31,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 01:12:31,863 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:31,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash -61282337, now seen corresponding path program 1 times [2024-11-09 01:12:31,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:31,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816257596] [2024-11-09 01:12:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:31,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:31,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816257596] [2024-11-09 01:12:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816257596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:12:31,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:12:31,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:12:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67370714] [2024-11-09 01:12:31,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:12:31,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:12:31,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:31,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:12:31,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:12:31,971 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-11-09 01:12:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:32,008 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2024-11-09 01:12:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:12:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2024-11-09 01:12:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:32,010 INFO L225 Difference]: With dead ends: 20 [2024-11-09 01:12:32,010 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 01:12:32,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:12:32,012 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:32,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:32,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 01:12:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 01:12:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-11-09 01:12:32,017 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2024-11-09 01:12:32,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:32,018 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-11-09 01:12:32,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-11-09 01:12:32,018 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-11-09 01:12:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 01:12:32,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:32,019 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 01:12:32,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 01:12:32,020 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:32,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash -739822010, now seen corresponding path program 1 times [2024-11-09 01:12:32,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:32,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654717356] [2024-11-09 01:12:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:32,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654717356] [2024-11-09 01:12:32,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654717356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631362764] [2024-11-09 01:12:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:32,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:32,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:32,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:32,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:12:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:32,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 01:12:32,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:32,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:32,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631362764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:32,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1964218367] [2024-11-09 01:12:32,369 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:12:32,369 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:32,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:32,380 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:32,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:33,169 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:33,423 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '412#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-09 01:12:33,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:33,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:33,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 01:12:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565531137] [2024-11-09 01:12:33,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:33,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:12:33,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:12:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-09 01:12:33,427 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:33,460 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2024-11-09 01:12:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:12:33,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 01:12:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:33,461 INFO L225 Difference]: With dead ends: 47 [2024-11-09 01:12:33,461 INFO L226 Difference]: Without dead ends: 46 [2024-11-09 01:12:33,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-09 01:12:33,462 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:33,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 41 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-09 01:12:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2024-11-09 01:12:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-09 01:12:33,475 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2024-11-09 01:12:33,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:33,475 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-09 01:12:33,476 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-09 01:12:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 01:12:33,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:33,476 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:12:33,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 01:12:33,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:33,677 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:33,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash -739823580, now seen corresponding path program 1 times [2024-11-09 01:12:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82187961] [2024-11-09 01:12:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:33,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:33,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82187961] [2024-11-09 01:12:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82187961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:33,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253470839] [2024-11-09 01:12:33,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:33,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:33,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:33,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:12:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:33,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 01:12:33,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:33,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:33,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253470839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:33,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2032672588] [2024-11-09 01:12:33,859 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:12:33,859 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:33,860 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:33,860 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:33,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:34,246 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:34,572 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '584#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_24| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_24| 0)))' at error location [2024-11-09 01:12:34,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:34,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:34,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 01:12:34,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853312852] [2024-11-09 01:12:34,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:34,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 01:12:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:34,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 01:12:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 01:12:34,577 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:34,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:34,625 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-09 01:12:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 01:12:34,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 01:12:34,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:34,626 INFO L225 Difference]: With dead ends: 41 [2024-11-09 01:12:34,626 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 01:12:34,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 01:12:34,628 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:34,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:34,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 01:12:34,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 01:12:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-11-09 01:12:34,633 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2024-11-09 01:12:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:34,634 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-11-09 01:12:34,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-11-09 01:12:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 01:12:34,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:34,635 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1] [2024-11-09 01:12:34,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 01:12:34,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:34,837 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:34,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2115326991, now seen corresponding path program 1 times [2024-11-09 01:12:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:34,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271806576] [2024-11-09 01:12:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:34,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:35,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:35,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271806576] [2024-11-09 01:12:35,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271806576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:35,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25546130] [2024-11-09 01:12:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:35,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:35,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:35,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 01:12:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:35,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:12:35,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:35,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25546130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:35,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [57120167] [2024-11-09 01:12:35,213 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:12:35,214 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:35,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:35,215 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:35,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:35,481 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:35,723 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '805#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-09 01:12:35,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:35,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 01:12:35,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929888331] [2024-11-09 01:12:35,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:35,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 01:12:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 01:12:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-09 01:12:35,726 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:35,798 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2024-11-09 01:12:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 01:12:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 01:12:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:35,801 INFO L225 Difference]: With dead ends: 58 [2024-11-09 01:12:35,801 INFO L226 Difference]: Without dead ends: 57 [2024-11-09 01:12:35,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-09 01:12:35,802 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:35,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 65 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:12:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-09 01:12:35,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2024-11-09 01:12:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 46 states have (on average 1.173913043478261) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-11-09 01:12:35,809 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 20 [2024-11-09 01:12:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:35,810 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-11-09 01:12:35,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-11-09 01:12:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 01:12:35,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:35,811 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-09 01:12:35,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 01:12:36,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 01:12:36,016 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:36,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash -202073290, now seen corresponding path program 2 times [2024-11-09 01:12:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371680404] [2024-11-09 01:12:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:36,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:36,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371680404] [2024-11-09 01:12:36,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371680404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:36,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024433520] [2024-11-09 01:12:36,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:12:36,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:36,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:36,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:36,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 01:12:36,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 01:12:36,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:12:36,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 01:12:36,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:36,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:36,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024433520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:36,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [855910525] [2024-11-09 01:12:36,396 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:12:36,397 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:36,398 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:36,398 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:36,398 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:36,701 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:36,987 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1086#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_40| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_40| 0)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647))' at error location [2024-11-09 01:12:36,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:36,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 01:12:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325905490] [2024-11-09 01:12:36,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:36,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 01:12:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:36,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 01:12:36,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-09 01:12:36,990 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:37,052 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2024-11-09 01:12:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 01:12:37,053 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-09 01:12:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:37,053 INFO L225 Difference]: With dead ends: 65 [2024-11-09 01:12:37,054 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 01:12:37,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-09 01:12:37,055 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:37,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:12:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 01:12:37,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-11-09 01:12:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-09 01:12:37,061 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 24 [2024-11-09 01:12:37,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:37,061 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-09 01:12:37,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-09 01:12:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 01:12:37,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:37,062 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2024-11-09 01:12:37,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 01:12:37,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 01:12:37,263 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:37,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2094757183, now seen corresponding path program 2 times [2024-11-09 01:12:37,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:37,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432715831] [2024-11-09 01:12:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:37,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432715831] [2024-11-09 01:12:37,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432715831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72404855] [2024-11-09 01:12:37,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:12:37,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:37,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:37,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:37,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 01:12:37,406 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 01:12:37,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:12:37,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:12:37,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:37,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:37,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72404855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:37,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [178726681] [2024-11-09 01:12:37,589 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:12:37,589 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:37,589 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:37,589 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:37,589 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:37,852 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:38,056 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1411#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-09 01:12:38,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:38,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:38,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 01:12:38,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414051747] [2024-11-09 01:12:38,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:38,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 01:12:38,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:38,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 01:12:38,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-09 01:12:38,059 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:38,111 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2024-11-09 01:12:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 01:12:38,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-09 01:12:38,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:38,112 INFO L225 Difference]: With dead ends: 84 [2024-11-09 01:12:38,112 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 01:12:38,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-09 01:12:38,113 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:38,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 74 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:12:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 01:12:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2024-11-09 01:12:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 70 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2024-11-09 01:12:38,124 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 30 [2024-11-09 01:12:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:38,124 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2024-11-09 01:12:38,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2024-11-09 01:12:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 01:12:38,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:38,129 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 1, 1, 1] [2024-11-09 01:12:38,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 01:12:38,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 01:12:38,329 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:38,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1256713451, now seen corresponding path program 2 times [2024-11-09 01:12:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:38,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376318308] [2024-11-09 01:12:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:38,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:38,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376318308] [2024-11-09 01:12:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376318308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509276543] [2024-11-09 01:12:38,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:12:38,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:38,599 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:38,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 01:12:38,649 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 01:12:38,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:12:38,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 01:12:38,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:38,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:39,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509276543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:39,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [955384782] [2024-11-09 01:12:39,047 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:12:39,047 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:39,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:39,047 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:39,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:39,276 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:39,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1882#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-09 01:12:39,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:39,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:39,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-09 01:12:39,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29663449] [2024-11-09 01:12:39,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:39,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 01:12:39,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 01:12:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 01:12:39,526 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:39,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:39,654 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2024-11-09 01:12:39,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 01:12:39,655 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 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 44 [2024-11-09 01:12:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:39,656 INFO L225 Difference]: With dead ends: 116 [2024-11-09 01:12:39,657 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 01:12:39,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 01:12:39,659 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:39,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 86 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:12:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 01:12:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2024-11-09 01:12:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.148936170212766) internal successors, (108), 96 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2024-11-09 01:12:39,676 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 44 [2024-11-09 01:12:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:39,676 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2024-11-09 01:12:39,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2024-11-09 01:12:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 01:12:39,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:39,678 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2024-11-09 01:12:39,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 01:12:39,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:39,882 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:39,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1980878938, now seen corresponding path program 3 times [2024-11-09 01:12:39,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:39,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988572210] [2024-11-09 01:12:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:39,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:40,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988572210] [2024-11-09 01:12:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988572210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225032483] [2024-11-09 01:12:40,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:12:40,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:40,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:40,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:40,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 01:12:40,269 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:12:40,269 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:12:40,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 01:12:40,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:40,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225032483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1483245113] [2024-11-09 01:12:40,718 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:12:40,719 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:40,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:40,719 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:40,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:40,972 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:41,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2445#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_73| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_73| 0)))' at error location [2024-11-09 01:12:41,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:41,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:41,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-09 01:12:41,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712100923] [2024-11-09 01:12:41,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:41,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 01:12:41,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:41,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 01:12:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 01:12:41,272 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:41,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:41,386 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2024-11-09 01:12:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 01:12:41,387 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-09 01:12:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:41,388 INFO L225 Difference]: With dead ends: 123 [2024-11-09 01:12:41,388 INFO L226 Difference]: Without dead ends: 106 [2024-11-09 01:12:41,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 01:12:41,389 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:41,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 100 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:12:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-09 01:12:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2024-11-09 01:12:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2024-11-09 01:12:41,405 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 48 [2024-11-09 01:12:41,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:41,406 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2024-11-09 01:12:41,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:41,411 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2024-11-09 01:12:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 01:12:41,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:41,412 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2024-11-09 01:12:41,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 01:12:41,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:41,613 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:41,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1915238025, now seen corresponding path program 3 times [2024-11-09 01:12:41,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:41,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73879223] [2024-11-09 01:12:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:41,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:41,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:41,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73879223] [2024-11-09 01:12:41,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73879223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:41,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072355377] [2024-11-09 01:12:41,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:12:41,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:41,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:41,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 01:12:41,969 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:12:41,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:12:41,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 01:12:41,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:42,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:42,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072355377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:42,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [237924006] [2024-11-09 01:12:42,369 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:12:42,369 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:42,370 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:42,370 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:42,370 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:42,655 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:42,847 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3120#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-09 01:12:42,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:42,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:42,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-09 01:12:42,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169359738] [2024-11-09 01:12:42,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:42,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 01:12:42,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:42,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 01:12:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2024-11-09 01:12:42,850 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:42,950 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2024-11-09 01:12:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 01:12:42,951 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-09 01:12:42,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:42,954 INFO L225 Difference]: With dead ends: 172 [2024-11-09 01:12:42,955 INFO L226 Difference]: Without dead ends: 171 [2024-11-09 01:12:42,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2024-11-09 01:12:42,956 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:42,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 142 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:12:42,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-09 01:12:42,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 143. [2024-11-09 01:12:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 140 states have (on average 1.1214285714285714) internal successors, (157), 142 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2024-11-09 01:12:42,966 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 66 [2024-11-09 01:12:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:42,967 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2024-11-09 01:12:42,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2024-11-09 01:12:42,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 01:12:42,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:42,969 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 1, 1, 1] [2024-11-09 01:12:42,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 01:12:43,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:43,173 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:43,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 143154525, now seen corresponding path program 3 times [2024-11-09 01:12:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:43,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450795450] [2024-11-09 01:12:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:44,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:44,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450795450] [2024-11-09 01:12:44,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450795450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35648075] [2024-11-09 01:12:44,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:12:44,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:44,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:44,046 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:44,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 01:12:44,110 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:12:44,110 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:12:44,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 01:12:44,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:44,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:45,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35648075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:45,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [277921447] [2024-11-09 01:12:45,276 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:12:45,276 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:45,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:45,277 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:45,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:45,474 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:45,734 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4095#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-09 01:12:45,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:45,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:45,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-09 01:12:45,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599609674] [2024-11-09 01:12:45,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:45,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-09 01:12:45,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-09 01:12:45,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=3550, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 01:12:45,739 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:45,965 INFO L93 Difference]: Finished difference Result 232 states and 262 transitions. [2024-11-09 01:12:45,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 01:12:45,966 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 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 92 [2024-11-09 01:12:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:45,967 INFO L225 Difference]: With dead ends: 232 [2024-11-09 01:12:45,967 INFO L226 Difference]: Without dead ends: 231 [2024-11-09 01:12:45,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1006, Invalid=3550, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 01:12:45,969 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 95 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:45,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 154 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:12:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-09 01:12:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 193. [2024-11-09 01:12:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.1368421052631579) internal successors, (216), 192 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 216 transitions. [2024-11-09 01:12:45,983 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 216 transitions. Word has length 92 [2024-11-09 01:12:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:45,983 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 216 transitions. [2024-11-09 01:12:45,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 216 transitions. [2024-11-09 01:12:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 01:12:45,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:45,985 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2024-11-09 01:12:46,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 01:12:46,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:46,186 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:46,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1471957342, now seen corresponding path program 4 times [2024-11-09 01:12:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055670874] [2024-11-09 01:12:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:47,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055670874] [2024-11-09 01:12:47,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055670874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857122556] [2024-11-09 01:12:47,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:12:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:47,168 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:47,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 01:12:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:47,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 01:12:47,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:47,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857122556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1866645926] [2024-11-09 01:12:48,529 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:12:48,529 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:48,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:48,529 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:48,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:48,768 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:49,164 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5222#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_128| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_128| 0)))' at error location [2024-11-09 01:12:49,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:49,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:49,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-11-09 01:12:49,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903980748] [2024-11-09 01:12:49,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:49,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 01:12:49,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 01:12:49,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=3891, Unknown=0, NotChecked=0, Total=4970 [2024-11-09 01:12:49,168 INFO L87 Difference]: Start difference. First operand 193 states and 216 transitions. Second operand has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:49,367 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2024-11-09 01:12:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-09 01:12:49,368 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 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 96 [2024-11-09 01:12:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:49,369 INFO L225 Difference]: With dead ends: 239 [2024-11-09 01:12:49,369 INFO L226 Difference]: Without dead ends: 206 [2024-11-09 01:12:49,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1079, Invalid=3891, Unknown=0, NotChecked=0, Total=4970 [2024-11-09 01:12:49,370 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 113 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:49,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 162 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:12:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-09 01:12:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 195. [2024-11-09 01:12:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.0572916666666667) internal successors, (203), 194 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 203 transitions. [2024-11-09 01:12:49,385 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 203 transitions. Word has length 96 [2024-11-09 01:12:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:49,385 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 203 transitions. [2024-11-09 01:12:49,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 203 transitions. [2024-11-09 01:12:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 01:12:49,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:49,388 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2024-11-09 01:12:49,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 01:12:49,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 01:12:49,593 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:49,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:49,593 INFO L85 PathProgramCache]: Analyzing trace with hash 229629411, now seen corresponding path program 4 times [2024-11-09 01:12:49,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:49,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024250729] [2024-11-09 01:12:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:49,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:50,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024250729] [2024-11-09 01:12:50,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024250729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972836067] [2024-11-09 01:12:50,361 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:12:50,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:50,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:50,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:50,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 01:12:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:50,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 01:12:50,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:50,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:51,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972836067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:51,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2024844278] [2024-11-09 01:12:51,530 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:12:51,530 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:51,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:51,530 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:51,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:51,721 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:51,952 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6597#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-09 01:12:51,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:51,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-11-09 01:12:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389218808] [2024-11-09 01:12:51,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:51,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 01:12:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:51,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 01:12:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1145, Invalid=1717, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 01:12:51,956 INFO L87 Difference]: Start difference. First operand 195 states and 203 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:52,138 INFO L93 Difference]: Finished difference Result 348 states and 371 transitions. [2024-11-09 01:12:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 01:12:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-09 01:12:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:52,141 INFO L225 Difference]: With dead ends: 348 [2024-11-09 01:12:52,141 INFO L226 Difference]: Without dead ends: 347 [2024-11-09 01:12:52,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1145, Invalid=1717, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 01:12:52,143 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 138 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:52,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 278 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:12:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-09 01:12:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 287. [2024-11-09 01:12:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 284 states have (on average 1.1161971830985915) internal successors, (317), 286 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 317 transitions. [2024-11-09 01:12:52,155 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 317 transitions. Word has length 138 [2024-11-09 01:12:52,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:12:52,156 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 317 transitions. [2024-11-09 01:12:52,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:52,157 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 317 transitions. [2024-11-09 01:12:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-09 01:12:52,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:52,160 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 30, 1, 1, 1] [2024-11-09 01:12:52,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 01:12:52,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 01:12:52,364 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:12:52,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash -718347795, now seen corresponding path program 4 times [2024-11-09 01:12:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:52,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758613133] [2024-11-09 01:12:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:52,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 2790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:55,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758613133] [2024-11-09 01:12:55,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758613133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:12:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162235993] [2024-11-09 01:12:55,015 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:12:55,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:12:55,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:55,016 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:12:55,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 01:12:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:55,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-09 01:12:55,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:12:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 2790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:55,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:12:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 2790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:12:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162235993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:12:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [385904532] [2024-11-09 01:12:58,889 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:12:58,889 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:12:58,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:12:58,889 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:12:58,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:12:59,099 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:12:59,488 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8580#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-09 01:12:59,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:12:59,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:12:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 125 [2024-11-09 01:12:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408915121] [2024-11-09 01:12:59,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:12:59,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-09 01:12:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-09 01:12:59,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4046, Invalid=13246, Unknown=0, NotChecked=0, Total=17292 [2024-11-09 01:12:59,495 INFO L87 Difference]: Start difference. First operand 287 states and 317 transitions. Second operand has 126 states, 125 states have (on average 3.0) internal successors, (375), 126 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:12:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:12:59,982 INFO L93 Difference]: Finished difference Result 464 states and 526 transitions. [2024-11-09 01:12:59,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-09 01:12:59,983 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 3.0) internal successors, (375), 126 states have internal predecessors, (375), 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 188 [2024-11-09 01:12:59,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:12:59,985 INFO L225 Difference]: With dead ends: 464 [2024-11-09 01:12:59,985 INFO L226 Difference]: Without dead ends: 463 [2024-11-09 01:12:59,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5714 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4046, Invalid=13246, Unknown=0, NotChecked=0, Total=17292 [2024-11-09 01:12:59,989 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 233 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:12:59,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 271 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:12:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-09 01:13:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 385. [2024-11-09 01:13:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 382 states have (on average 1.130890052356021) internal successors, (432), 384 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 432 transitions. [2024-11-09 01:13:00,004 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 432 transitions. Word has length 188 [2024-11-09 01:13:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:00,004 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 432 transitions. [2024-11-09 01:13:00,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 3.0) internal successors, (375), 126 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 432 transitions. [2024-11-09 01:13:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-09 01:13:00,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:00,007 INFO L215 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2024-11-09 01:13:00,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 01:13:00,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:00,208 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:13:00,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash -34245838, now seen corresponding path program 5 times [2024-11-09 01:13:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:00,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463602728] [2024-11-09 01:13:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:00,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 2852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:02,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463602728] [2024-11-09 01:13:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463602728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:03,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225069754] [2024-11-09 01:13:03,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:13:03,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:03,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:03,001 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:03,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 01:13:03,167 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-09 01:13:03,167 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:13:03,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 01:13:03,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 2852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:03,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:13:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 2852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225069754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:13:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282951359] [2024-11-09 01:13:07,016 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:13:07,016 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:13:07,016 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:13:07,017 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:13:07,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:13:07,245 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:13:07,769 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10835#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_227| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_227| 0)))' at error location [2024-11-09 01:13:07,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:13:07,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:13:07,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2024-11-09 01:13:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322311264] [2024-11-09 01:13:07,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:13:07,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-09 01:13:07,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:07,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-09 01:13:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4183, Invalid=13907, Unknown=0, NotChecked=0, Total=18090 [2024-11-09 01:13:07,774 INFO L87 Difference]: Start difference. First operand 385 states and 432 transitions. Second operand has 128 states, 127 states have (on average 3.015748031496063) internal successors, (383), 128 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:08,305 INFO L93 Difference]: Finished difference Result 471 states and 502 transitions. [2024-11-09 01:13:08,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-09 01:13:08,306 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 3.015748031496063) internal successors, (383), 128 states have internal predecessors, (383), 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 192 [2024-11-09 01:13:08,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:08,308 INFO L225 Difference]: With dead ends: 471 [2024-11-09 01:13:08,308 INFO L226 Difference]: Without dead ends: 406 [2024-11-09 01:13:08,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6071 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4183, Invalid=13907, Unknown=0, NotChecked=0, Total=18090 [2024-11-09 01:13:08,311 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 209 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:08,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 325 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:13:08,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-09 01:13:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 387. [2024-11-09 01:13:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 384 states have (on average 1.0494791666666667) internal successors, (403), 386 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 403 transitions. [2024-11-09 01:13:08,332 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 403 transitions. Word has length 192 [2024-11-09 01:13:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:08,333 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 403 transitions. [2024-11-09 01:13:08,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 3.015748031496063) internal successors, (383), 128 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:08,334 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 403 transitions. [2024-11-09 01:13:08,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-09 01:13:08,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:08,339 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 1, 1, 1] [2024-11-09 01:13:08,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 01:13:08,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:08,539 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:13:08,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash 910189243, now seen corresponding path program 5 times [2024-11-09 01:13:08,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:08,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837943602] [2024-11-09 01:13:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:08,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:10,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837943602] [2024-11-09 01:13:10,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837943602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840782593] [2024-11-09 01:13:10,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:13:10,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:10,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:10,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:10,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 01:13:11,114 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 01:13:11,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:13:11,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 01:13:11,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:11,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:13:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:14,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840782593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:13:14,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1306535340] [2024-11-09 01:13:14,672 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:13:14,672 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:13:14,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:13:14,672 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:13:14,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:13:14,830 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:13:15,228 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13610#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-09 01:13:15,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:13:15,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:13:15,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2024-11-09 01:13:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15102432] [2024-11-09 01:13:15,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:13:15,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-09 01:13:15,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-09 01:13:15,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4577, Invalid=5725, Unknown=0, NotChecked=0, Total=10302 [2024-11-09 01:13:15,234 INFO L87 Difference]: Start difference. First operand 387 states and 403 transitions. Second operand has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:15,736 INFO L93 Difference]: Finished difference Result 700 states and 747 transitions. [2024-11-09 01:13:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 01:13:15,737 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 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 282 [2024-11-09 01:13:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:15,739 INFO L225 Difference]: With dead ends: 700 [2024-11-09 01:13:15,739 INFO L226 Difference]: Without dead ends: 699 [2024-11-09 01:13:15,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4577, Invalid=5725, Unknown=0, NotChecked=0, Total=10302 [2024-11-09 01:13:15,742 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 438 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:15,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 534 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:13:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-09 01:13:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 575. [2024-11-09 01:13:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 572 states have (on average 1.1136363636363635) internal successors, (637), 574 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 637 transitions. [2024-11-09 01:13:15,762 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 637 transitions. Word has length 282 [2024-11-09 01:13:15,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:15,763 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 637 transitions. [2024-11-09 01:13:15,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:15,763 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 637 transitions. [2024-11-09 01:13:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-09 01:13:15,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:15,766 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 62, 1, 1, 1] [2024-11-09 01:13:15,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 01:13:15,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 01:13:15,967 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:13:15,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:15,967 INFO L85 PathProgramCache]: Analyzing trace with hash 823372557, now seen corresponding path program 5 times [2024-11-09 01:13:15,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:15,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019254961] [2024-11-09 01:13:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 0 proven. 11718 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:25,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019254961] [2024-11-09 01:13:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019254961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275342894] [2024-11-09 01:13:25,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:13:25,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:25,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:25,423 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:25,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 01:13:25,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2024-11-09 01:13:25,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:13:25,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-09 01:13:25,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 0 proven. 11718 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:26,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:13:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 0 proven. 11718 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275342894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:13:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1071703113] [2024-11-09 01:13:40,229 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:13:40,230 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:13:40,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:13:40,230 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:13:40,230 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:13:40,364 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:13:40,985 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17609#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-09 01:13:40,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:13:40,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:13:40,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 253 [2024-11-09 01:13:40,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356206846] [2024-11-09 01:13:40,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:13:40,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 254 states [2024-11-09 01:13:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2024-11-09 01:13:40,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16270, Invalid=51070, Unknown=0, NotChecked=0, Total=67340 [2024-11-09 01:13:40,998 INFO L87 Difference]: Start difference. First operand 575 states and 637 transitions. Second operand has 254 states, 253 states have (on average 3.0) internal successors, (759), 254 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:42,864 INFO L93 Difference]: Finished difference Result 928 states and 1054 transitions. [2024-11-09 01:13:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2024-11-09 01:13:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 254 states, 253 states have (on average 3.0) internal successors, (759), 254 states have internal predecessors, (759), 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 380 [2024-11-09 01:13:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:42,870 INFO L225 Difference]: With dead ends: 928 [2024-11-09 01:13:42,870 INFO L226 Difference]: Without dead ends: 927 [2024-11-09 01:13:42,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 1007 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21714 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=16270, Invalid=51070, Unknown=0, NotChecked=0, Total=67340 [2024-11-09 01:13:42,873 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 561 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:42,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 524 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:13:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-09 01:13:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 769. [2024-11-09 01:13:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 766 states have (on average 1.1279373368146215) internal successors, (864), 768 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 864 transitions. [2024-11-09 01:13:42,901 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 864 transitions. Word has length 380 [2024-11-09 01:13:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:42,902 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 864 transitions. [2024-11-09 01:13:42,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 254 states, 253 states have (on average 3.0) internal successors, (759), 254 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:13:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 864 transitions. [2024-11-09 01:13:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-09 01:13:42,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:42,905 INFO L215 NwaCegarLoop]: trace histogram [64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2024-11-09 01:13:42,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 01:13:43,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 01:13:43,106 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:13:43,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:43,106 INFO L85 PathProgramCache]: Analyzing trace with hash -636441518, now seen corresponding path program 6 times [2024-11-09 01:13:43,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:43,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318174524] [2024-11-09 01:13:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:43,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 0 proven. 11844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:51,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318174524] [2024-11-09 01:13:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318174524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932779688] [2024-11-09 01:13:51,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:13:51,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:51,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:51,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:51,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 01:13:52,016 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:13:52,016 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:13:52,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-09 01:13:52,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 0 proven. 11844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:52,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:14:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 0 proven. 11844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:14:06,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932779688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:14:06,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2055043632] [2024-11-09 01:14:06,615 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:14:06,615 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:14:06,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:14:06,616 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:14:06,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:14:06,839 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:14:07,648 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22120#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_414| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_414| 0)))' at error location [2024-11-09 01:14:07,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:14:07,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:14:07,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 255 [2024-11-09 01:14:07,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597816796] [2024-11-09 01:14:07,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:14:07,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2024-11-09 01:14:07,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:14:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2024-11-09 01:14:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16535, Invalid=52371, Unknown=0, NotChecked=0, Total=68906 [2024-11-09 01:14:07,660 INFO L87 Difference]: Start difference. First operand 769 states and 864 transitions. Second operand has 256 states, 255 states have (on average 3.007843137254902) internal successors, (767), 256 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:14:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:14:09,434 INFO L93 Difference]: Finished difference Result 935 states and 998 transitions. [2024-11-09 01:14:09,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2024-11-09 01:14:09,435 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 3.007843137254902) internal successors, (767), 256 states have internal predecessors, (767), 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 384 [2024-11-09 01:14:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:14:09,438 INFO L225 Difference]: With dead ends: 935 [2024-11-09 01:14:09,438 INFO L226 Difference]: Without dead ends: 806 [2024-11-09 01:14:09,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1278 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22423 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=16535, Invalid=52371, Unknown=0, NotChecked=0, Total=68906 [2024-11-09 01:14:09,443 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 560 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:14:09,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 533 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:14:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-09 01:14:09,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 771. [2024-11-09 01:14:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 768 states have (on average 1.0455729166666667) internal successors, (803), 770 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:14:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 803 transitions. [2024-11-09 01:14:09,469 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 803 transitions. Word has length 384 [2024-11-09 01:14:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:14:09,470 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 803 transitions. [2024-11-09 01:14:09,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 3.007843137254902) internal successors, (767), 256 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:14:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 803 transitions. [2024-11-09 01:14:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-09 01:14:09,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:14:09,475 INFO L215 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 1, 1, 1] [2024-11-09 01:14:09,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 01:14:09,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 01:14:09,676 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:14:09,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:14:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -843916181, now seen corresponding path program 6 times [2024-11-09 01:14:09,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:14:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114719408] [2024-11-09 01:14:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:14:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:14:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:14:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:14:18,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:14:18,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114719408] [2024-11-09 01:14:18,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114719408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:14:18,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602059843] [2024-11-09 01:14:18,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:14:18,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:14:18,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:14:18,031 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:14:18,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 01:14:18,254 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:14:18,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:14:18,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-09 01:14:18,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:14:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:14:18,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:14:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:14:30,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602059843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:14:30,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [76146724] [2024-11-09 01:14:30,702 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:14:30,702 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:14:30,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:14:30,703 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:14:30,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:14:30,857 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:14:31,355 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27695#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-09 01:14:31,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:14:31,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:14:31,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2024-11-09 01:14:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511867294] [2024-11-09 01:14:31,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:14:31,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-09 01:14:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:14:31,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-09 01:14:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18353, Invalid=20653, Unknown=0, NotChecked=0, Total=39006 [2024-11-09 01:14:31,366 INFO L87 Difference]: Start difference. First operand 771 states and 803 transitions. Second operand has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:14:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:14:33,738 INFO L93 Difference]: Finished difference Result 1404 states and 1499 transitions. [2024-11-09 01:14:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-09 01:14:33,739 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 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 570 [2024-11-09 01:14:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:14:33,744 INFO L225 Difference]: With dead ends: 1404 [2024-11-09 01:14:33,744 INFO L226 Difference]: Without dead ends: 1403 [2024-11-09 01:14:33,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1608 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=18353, Invalid=20653, Unknown=0, NotChecked=0, Total=39006 [2024-11-09 01:14:33,748 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1158 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:14:33,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1038 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:14:33,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2024-11-09 01:14:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1151. [2024-11-09 01:14:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1148 states have (on average 1.112369337979094) internal successors, (1277), 1150 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:14:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1277 transitions. [2024-11-09 01:14:33,786 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1277 transitions. Word has length 570 [2024-11-09 01:14:33,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:14:33,787 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 1277 transitions. [2024-11-09 01:14:33,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:14:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1277 transitions. [2024-11-09 01:14:33,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2024-11-09 01:14:33,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:14:33,794 INFO L215 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 127, 126, 1, 1, 1] [2024-11-09 01:14:33,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 01:14:33,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 01:14:33,995 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:14:33,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:14:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1329347917, now seen corresponding path program 6 times [2024-11-09 01:14:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:14:33,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379944424] [2024-11-09 01:14:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:14:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:14:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:15:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 48006 backedges. 0 proven. 48006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:15:13,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:15:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379944424] [2024-11-09 01:15:13,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379944424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:15:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579717924] [2024-11-09 01:15:13,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:15:13,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:15:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:15:13,277 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:15:13,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 01:15:13,566 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:15:13,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:15:13,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 255 conjuncts are in the unsatisfiable core [2024-11-09 01:15:13,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:15:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 48006 backedges. 0 proven. 48006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:15:14,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:16:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 48006 backedges. 0 proven. 48006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:16:10,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579717924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:16:10,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1058563351] [2024-11-09 01:16:10,019 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:16:10,020 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:16:10,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:16:10,020 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:16:10,020 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:16:10,196 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:16:11,450 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35726#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2024-11-09 01:16:11,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:16:11,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:16:11,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255, 255] total 509 [2024-11-09 01:16:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433075030] [2024-11-09 01:16:11,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:16:11,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 510 states [2024-11-09 01:16:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:16:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 510 interpolants. [2024-11-09 01:16:11,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65294, Invalid=200446, Unknown=0, NotChecked=0, Total=265740 [2024-11-09 01:16:11,491 INFO L87 Difference]: Start difference. First operand 1151 states and 1277 transitions. Second operand has 510 states, 509 states have (on average 3.0) internal successors, (1527), 510 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:16:22,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:16:22,494 INFO L93 Difference]: Finished difference Result 1856 states and 2110 transitions. [2024-11-09 01:16:22,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 510 states. [2024-11-09 01:16:22,495 INFO L78 Accepts]: Start accepts. Automaton has has 510 states, 509 states have (on average 3.0) internal successors, (1527), 510 states have internal predecessors, (1527), 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 764 [2024-11-09 01:16:22,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:16:22,501 INFO L225 Difference]: With dead ends: 1856 [2024-11-09 01:16:22,502 INFO L226 Difference]: Without dead ends: 1855 [2024-11-09 01:16:22,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2545 GetRequests, 2031 SyntacticMatches, 0 SemanticMatches, 514 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84434 ImplicationChecksByTransitivity, 75.9s TimeCoverageRelationStatistics Valid=65294, Invalid=200446, Unknown=0, NotChecked=0, Total=265740 [2024-11-09 01:16:22,517 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1526 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:16:22,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1022 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 01:16:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2024-11-09 01:16:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1537. [2024-11-09 01:16:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1534 states have (on average 1.1264667535853976) internal successors, (1728), 1536 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:16:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1728 transitions. [2024-11-09 01:16:22,565 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1728 transitions. Word has length 764 [2024-11-09 01:16:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:16:22,567 INFO L471 AbstractCegarLoop]: Abstraction has 1537 states and 1728 transitions. [2024-11-09 01:16:22,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 510 states, 509 states have (on average 3.0) internal successors, (1527), 510 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:16:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1728 transitions. [2024-11-09 01:16:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2024-11-09 01:16:22,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:16:22,575 INFO L215 NwaCegarLoop]: trace histogram [128, 127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2024-11-09 01:16:22,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 01:16:22,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 01:16:22,776 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:16:22,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:16:22,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1322901870, now seen corresponding path program 7 times [2024-11-09 01:16:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:16:22,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861039379] [2024-11-09 01:16:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:16:22,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:16:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 48260 backedges. 0 proven. 48260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:17:03,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861039379] [2024-11-09 01:17:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861039379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:17:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501103707] [2024-11-09 01:17:03,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:17:03,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:17:03,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:17:03,440 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:17:03,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 01:17:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:03,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 256 conjuncts are in the unsatisfiable core [2024-11-09 01:17:03,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:17:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 48260 backedges. 0 proven. 48260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:17:04,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 48260 backedges. 0 proven. 48260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:18:01,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501103707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:01,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1280059140] [2024-11-09 01:18:01,705 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:18:01,705 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:18:01,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:18:01,706 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:18:01,706 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:18:01,864 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:18:03,350 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '44749#(and (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_777| Int)) (= |v_ULTIMATE.start_main_#t~nondet3#1_777| 0)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647))' at error location [2024-11-09 01:18:03,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:18:03,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:18:03,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256, 256] total 511 [2024-11-09 01:18:03,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387179292] [2024-11-09 01:18:03,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:18:03,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2024-11-09 01:18:03,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2024-11-09 01:18:03,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65815, Invalid=203027, Unknown=0, NotChecked=0, Total=268842 [2024-11-09 01:18:03,387 INFO L87 Difference]: Start difference. First operand 1537 states and 1728 transitions. Second operand has 512 states, 511 states have (on average 3.003913894324853) internal successors, (1535), 512 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:18:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:13,276 INFO L93 Difference]: Finished difference Result 1863 states and 1990 transitions. [2024-11-09 01:18:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2024-11-09 01:18:13,277 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 3.003913894324853) internal successors, (1535), 512 states have internal predecessors, (1535), 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 768 [2024-11-09 01:18:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:13,281 INFO L225 Difference]: With dead ends: 1863 [2024-11-09 01:18:13,281 INFO L226 Difference]: Without dead ends: 1606 [2024-11-09 01:18:13,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2558 GetRequests, 2041 SyntacticMatches, 0 SemanticMatches, 517 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85847 ImplicationChecksByTransitivity, 77.8s TimeCoverageRelationStatistics Valid=65815, Invalid=203027, Unknown=0, NotChecked=0, Total=268842 [2024-11-09 01:18:13,296 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1249 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:13,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1053 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 01:18:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-11-09 01:18:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1539. [2024-11-09 01:18:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1536 states have (on average 1.0436197916666667) internal successors, (1603), 1538 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:18:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1603 transitions. [2024-11-09 01:18:13,342 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1603 transitions. Word has length 768 [2024-11-09 01:18:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:13,343 INFO L471 AbstractCegarLoop]: Abstraction has 1539 states and 1603 transitions. [2024-11-09 01:18:13,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 3.003913894324853) internal successors, (1535), 512 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:18:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1603 transitions. [2024-11-09 01:18:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2024-11-09 01:18:13,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:13,357 INFO L215 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 190, 1, 1, 1] [2024-11-09 01:18:13,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 01:18:13,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:18:13,557 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:18:13,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash -866283573, now seen corresponding path program 7 times [2024-11-09 01:18:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193664542] [2024-11-09 01:18:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 108490 backedges. 0 proven. 108490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:18:50,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:50,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193664542] [2024-11-09 01:18:50,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193664542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:18:50,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415725394] [2024-11-09 01:18:50,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:18:50,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:18:50,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:18:50,890 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:18:50,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 01:18:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:51,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-11-09 01:18:51,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 108490 backedges. 0 proven. 108490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:18:52,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:19:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 108490 backedges. 0 proven. 108490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:19:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415725394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:19:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [466798666] [2024-11-09 01:19:40,333 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:19:40,333 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:19:40,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:19:40,333 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:19:40,333 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:19:40,527 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:19:41,408 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '55924#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|))' at error location [2024-11-09 01:19:41,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:19:41,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:19:41,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2024-11-09 01:19:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912182582] [2024-11-09 01:19:41,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:19:41,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2024-11-09 01:19:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:19:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2024-11-09 01:19:41,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73553, Invalid=78157, Unknown=0, NotChecked=0, Total=151710 [2024-11-09 01:19:41,431 INFO L87 Difference]: Start difference. First operand 1539 states and 1603 transitions. Second operand has 384 states, 383 states have (on average 5.981723237597911) internal successors, (2291), 384 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:19:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:19:55,060 INFO L93 Difference]: Finished difference Result 2812 states and 3003 transitions. [2024-11-09 01:19:55,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-09 01:19:55,061 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.981723237597911) internal successors, (2291), 384 states have internal predecessors, (2291), 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 1146 [2024-11-09 01:19:55,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:19:55,069 INFO L225 Difference]: With dead ends: 2812 [2024-11-09 01:19:55,069 INFO L226 Difference]: Without dead ends: 2811 [2024-11-09 01:19:55,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3628 GetRequests, 3240 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3430 ImplicationChecksByTransitivity, 62.5s TimeCoverageRelationStatistics Valid=73553, Invalid=78157, Unknown=0, NotChecked=0, Total=151710 [2024-11-09 01:19:55,078 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2326 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:19:55,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2326 Valid, 2054 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 01:19:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2024-11-09 01:19:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2303. [2024-11-09 01:19:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2300 states have (on average 1.1117391304347826) internal successors, (2557), 2302 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:19:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2557 transitions. [2024-11-09 01:19:55,143 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2557 transitions. Word has length 1146 [2024-11-09 01:19:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:19:55,144 INFO L471 AbstractCegarLoop]: Abstraction has 2303 states and 2557 transitions. [2024-11-09 01:19:55,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.981723237597911) internal successors, (2291), 384 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:19:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2557 transitions. [2024-11-09 01:19:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1533 [2024-11-09 01:19:55,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:19:55,166 INFO L215 NwaCegarLoop]: trace histogram [255, 255, 255, 255, 255, 254, 1, 1, 1] [2024-11-09 01:19:55,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 01:19:55,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 01:19:55,366 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:19:55,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:19:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash 84500941, now seen corresponding path program 7 times [2024-11-09 01:19:55,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:19:55,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825562644] [2024-11-09 01:19:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:19:55,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:19:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:23:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 194310 backedges. 0 proven. 194310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:23:38,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:23:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825562644] [2024-11-09 01:23:38,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825562644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:23:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796352059] [2024-11-09 01:23:38,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:23:38,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:23:38,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:23:38,814 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:23:38,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03f498b-95a6-4946-a5d1-b75d833dfdda/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 01:23:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:23:39,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 511 conjuncts are in the unsatisfiable core [2024-11-09 01:23:39,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:23:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 194310 backedges. 0 proven. 194310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:23:41,666 INFO L311 TraceCheckSpWp]: Computing backward predicates...